Q1. Who is the Father of Indian Space Programme?
(A) Dr Vikram Ambalal Sarabhai
(B) Dr Satish Dhawan
(C) Dr Homi J Bhabha
(D) Dr Krishnaswami Kasturirangan
Answer: (A)
Exp: Dr Vikram A. Sarabhai is regarded as the founding father of India’s space programme. ISRO was formed on 15 August 1969.
Q2. Which of the following has the maximum percentage in sea water?
(A) Magnesium Chloride
(B) Magnesium Sulphate
(C) Potassium Sulphate
(D) Sodium Chloride
Answer: (D)
Exp: Sodium chloride is the major dissolved salt in seawater and accounts for the largest share of its dissolved salts. Average ocean salinity is about 35‰, or 3.5% by mass.
Q3. The mean distance from the Sun to the Earth is known as:
(A) Light year
(B) Parallactic second
(C) Astronomical unit
(D) Angstrom
Answer: (C)
Exp: An astronomical unit (AU) is the mean Earth–Sun distance. 1 AU is about 149.6 million km.
Q4. In human digestive system, the process of digestion starts in:
(A) Oesophagus
(B) Buccal cavity
(C) Duodenum
(D) Stomach
Answer: (B)
Exp: Digestion begins in the mouth or buccal cavity, where chewing and salivary enzymes begin chemical digestion of starch.
Q5. What is measured in hertz?
(A) Frequency
(B) Energy
(C) Heat
(D) Quality
Answer: (A)
Exp: Hertz (Hz) is the SI unit of frequency. 1 hertz equals one cycle or event per second.
Q6. A solar cooker works on the same principle as:
(A) Bolometer
(B) Pyrometer
(C) Greenhouse
(D) Solar PV cell
Answer: (C)
Exp: A solar cooker traps solar radiation and heat, using a greenhouse-effect-like heat-retention principle. Solar PV cells instead convert sunlight into electricity.
Q7. Animals that eat both plants and animals are called:
(A) Neither carnivores, omnivores nor herbivores
(B) Carnivores
(C) Herbivores
(D) Omnivores
Answer: (D)
Exp: Omnivores consume both plant and animal matter. Herbivores mainly eat plants, while carnivores mainly eat animals.
Q8. The speed of wind is measured by:
(A) Wind vane
(B) Wind rose
(C) Barometer
(D) Anemometer
Answer: (D)
Exp: An anemometer measures wind speed. A wind vane shows wind direction and a barometer measures atmospheric pressure.
Q9. Approximate percentage of carbon in Earth’s crust is:
(A) 0.045%
(B) 0.025%
(C) 0.015%
(D) 0.005%
Answer: (B)
Exp: Carbon makes up about 0.025% of Earth’s crust by mass. Despite its low abundance, carbon forms an exceptionally large number of compounds.
Q10. Rickets and night blindness are caused by deficiency of:
(A) Vitamin D, Vitamin A
(B) Vitamin D, Vitamin C
(C) Vitamin B1, Vitamin C
(D) Vitamin E, Vitamin A
Answer: (A)
Exp: Vitamin D deficiency causes rickets by disturbing calcium and phosphate metabolism. Vitamin A deficiency can cause night blindness and impaired dark adaptation.
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Q11. Which acid is predominantly found in tomatoes?
(A) Acetic acid
(B) Tartaric acid
(C) Oxalic acid
(D) Lactic acid
Answer: (C)
Exp: Among the given options, oxalic acid is the intended answer; tomatoes contain several organic acids that contribute to their characteristic taste.
Q12. The nucleic acid present in coronavirus is:
(A) DNA
(B) Oxyribonucleic acid
(C) RNA
(D) Chromatin
Answer: (C)
Exp: Coronaviruses are positive-sense single-stranded RNA viruses. Their RNA genome is enclosed inside the viral particle.
Q13. The main constituent of LPG is:
(A) Hexane
(B) Pentane
(C) Butane
(D) Methane
Answer: (C)
Exp: LPG mainly contains propane and butane. Among the given choices, butane is correct; the exact mixture varies by source and season.
Q14. The first rocket launched from India was in:
(A) 1963
(B) 1977
(C) 1948
(D) 1973
Answer: (A)
Exp: The first sounding rocket was launched from Thumba, Kerala, on 21 November 1963. It marked the beginning of India’s organised space programme; ISRO was established in 1969.
Q15. What is the full form of GSM?
(A) Geographic System for Mobility
(B) Global System for Mobile Communications
(C) Great System for Mobiles
(D) Grand System for Mobility
Answer: (B)
Exp: GSM stands for Global System for Mobile Communications, a digital cellular communication standard.
Q16. Identify the unit of measuring intensity of sound:
(A) Knots
(B) Ampere
(C) Candela
(D) Decibel
Answer: (D)
Exp: Sound level is expressed in decibels (dB), a logarithmic unit. The term bel was named after Alexander Graham Bell.
Q17. Which one of the following waves is used for detecting forgery in currency notes?
(A) Ultraviolet waves
(B) Infrared waves
(C) Radio waves
(D) Microwaves
Answer: (A)
Exp: An authentic paper currency will fluoresce when it is illuminated by long wave ultraviolet light Ultraviolet security features are used to reveal fluorescent markings on many genuine currency notes
Q18. World Bank’s headquarter is located at:
(A) Manila
(B) Washington DC
(C) Newyork
(D) Geneva
Answer: (B)
Exp: The headquarters of the World Bank is situated in Washington DC, United States The World Bank Group’s headquarters are in Washington, D.C., United States
Q19. The group of stars that indicates the direction of Poles is:
(A) Saptarishi
(B) Mrig
(C) Scorpio
(D) Taurus
Answer: (A)
Exp: The Saptarishi constellation (Big Dipper/Ursa Major) is used as a guide to locate the Pole Star and hence the north direction.
Q20. Light year is a unit for measurement of:
(A) Very large distances
(B) Time interval in years
(C) Amount of light received on earth in a year
(D) Mass of atoms
Answer: (A)
Exp: In scientific usage, a light-year is a unit of length that is equal to the distance light travels in one year in the vacuum of space.
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Q21. Which of these is a celestial phenomenon occurring due to stars?
(A) Ozone Hole
(B) Black Hole
(C) Rainbow
(D) Comet
Answer: (B)
Exp: A black hole is a region of spacetime with gravity so strong that electromagnetic radiation cannot escape from within its event horizon. It is an astronomical phenomenon associated with stellar evolution and other processes.
Q22. Which one of the following hypothesis/theory explains the origin of the universe?
(A) Nebular Hypothesis
(B) Binary Theory
(C) Big Bang Theory
(D) Planetesimal Hypothesis
Answer: (C)
Exp: Big Bang Theory is a hypothesis that explains how our universe originated from a small singularity. Nebular Hypothesis is about the origin of the Solar System, Sun, and Stars.
Q23. Which branch of Biology deals with study of fossils?
(A) Cryology
(B) Pulmonology
(C) Paleontology
(D) Nephrology
Answer: (C)
Exp: Palaeontology is the branch of science that deals with the study of fossils.
Q24. Which one of the following substances has the highest specific heat?
(A) Petrol
(B) Iron
(C) Water
(D) Alcohol
Answer: (C)
Exp: Water has maximum density at 4 degree celsius.
Q25. Which among the following converts chemical energy to electrical energy?
(A) Dynamo
(B) Generator
(C) Motor
(D) Battery
Answer: (D)
Exp: A dry cell converts chemical energy into electrical energy.
Q26. Which one of the following gases turns lime water milky?
(A) Carbon dioxide
(B) Chlorine
(C) Hydrogen Sulphide
(D) Hydrogen
Answer: (A)
Exp: Carbondioxide (CO2) gas turns lime water into milky. Carbondioxide (CO2) turns lime water milky, due to the formation of CaCO3 (calcium carbonate).
Q27. Which planets do not have satellites revolving around them?
(A) Mars and Venus
(B) Mercury and Venus
(C) Mars and Mercury
(D) Neptune and Pluto
Answer: (B)
Exp: Mercury and Venus are the only planets in our solar system which do not have any natural satellite.
Q28. Which of the following blood groups is referred to as universal donor?
Answer: (A)
Exp: Blood group O is known as the universal donor as this blood group does not contain any antigens on the surface of its red blood cells.
Q29. Which of the following is the fastest spinning planet? OR Which among the following planet has the fastest speed of rotation?
(A) Venus
(B) Jupiter
(C) Saturn
(D) Mars
Answer: (B)
Exp: Jupiter is the fastest spinning planet in our Solar System rotating on average once in just under 10 hours. This means that Jupiter has the shortest days of all the planets in the Solar System.
Q30. Apiculture is associated with:
(A) Honeybee
(B) Fish
(C) Lac-insects
(D) Silkworm
Answer: (A)
Exp: Apiculture means the scientific rearing and management of honeybees for honey, wax and other products.
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Q31. Water droplets cause rainbow due to:
(A) Reflection of sunlight
(B) Refraction of sunlight
(C) Reflection & refraction of sunlight
(D) Diffusion of sunlight
Answer: (C)
Exp: After rainfall, small droplets of water is present in the atmosphere. The ray of light coming from the sun after raindrops follows reflection and then reflect internally. So, rainbow formation is actually the result of both reflection and refraction both.
Q32. Dialysis is performed for the treatment of:
(A) Cancer
(B) Astigmatism
(C) Renal failure
(D) Rheumatism
Answer: (C)
Exp: Dialysis is a procedure to remove waste products and excess fluid from the blood when the kidneys stop working properly. The term renal failure denotes inability of the kidneys to perform excretory function leading to retention of nitrogenous waste products from the blood.
Q33. Lambert Glacier, the largest and fastest moving glacier in the world is located in:
(A) China
(B) Nepal
(C) Russia
(D) Antarctica
Answer: (D)
Exp: The largest glacier in the world, Antarctica's Lambert Glacier, is one of the world's fastest-moving ice streams.
Q34. How many moons does Mars have?
Answer: (B)
Exp: The two moons of Mars are Phobos and Deimos. They are irregular in shape.
Q35. Genetics is related to the study of:
(A) Heredity
(B) Chromosomes
(C) Sleeping sickness
(D) Muscles
Answer: (A)
Exp: Genetics is the scientific study of genes and heredity—of how certain qualities or traits are passed from parents to offspring as a result of changes in DNA sequence.
Q36. Which of the following animals can hear ultrasonic sound?
(A) Rat
(B) Cow
(C) Squirrel
(D) Bat
Answer: (D)
Exp: Ultrasonic sounds have frequencies more than 20000 Hz. Among the following animals dogs, cats and bats can hear ultrasonic sounds. Animals like dogs, whales, bats, dolphins, etc. can hear sounds of frequencies more than 20,000 Hz, i.e., ultrasounds.
Q37. The first artificial satellite of India was launched on:
(A) August 30,1983
(B) April 1, 1982
(C) April 19, 1975
(D) None of these
Answer: (C)
Exp: Aryabhata was the first artificial satellite launched by India on 19th April 1975.
Q38. The instrument for measuring intensity of earthquake is called:
(A) Barometer
(B) Pantograph
(C) Epigraph
(D) Seismograph
Answer: (D)
Exp: A seismograph records ground motion caused by seismic waves. Earthquake magnitude is commonly expressed using the moment magnitude scale (Mw), while intensity describes observed effects using scales such as the Modified Mercalli scale.
Q39. Which layer of the atmosphere makes radio communication possible?
(A) Troposphere
(B) Thermosphere
(C) Ionosphere
(D) Stratosphere
Answer: (C)
Exp: The ionosphere contains charged particles produced by solar radiation. Its ionized layers can reflect/refract radio waves, enabling long-distance radio communication, especially in the high-frequency range.
Q40. The surface of which planet is not solid?
(A) Jupiter
(B) Mars
(C) Venus
(D) Mercury
Answer: (A)
Exp: Jupiter is a gas giant composed predominantly of hydrogen and helium and has no solid surface like Earth or Mars. Jupiter, Saturn, Uranus and Neptune are the four giant planets.
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Q41. The density of milk is measured by:
(A) Salinometer
(B) Calorimeter
(C) Pyrometer
(D) Lactometer
Answer: (D)
Exp: A lactometer is a hydrometer used to estimate the specific gravity/density of milk. It is commonly used as a quick indicator of milk quality.
Q42. Which instrument is used for measuring humidity in air?
(A) Hydrometer
(B) Hygrometer
(C) Spectrometer
(D) Eudiometer
Answer: (B)
Exp: A hygrometer measures humidity, the amount of water vapour in air. A psychrometer is a type of hygrometer using wet- and dry-bulb temperatures.
Q43. The working principle of a washing machine is:
(A) Centrifugation
(B) Dialysis
(C) Reverse osmosis
(D) Diffusion
Answer: (A)
Exp: The spin-drying stage of a washing machine uses centrifugation. Rapid rotation forces water outward through the perforated drum, separating it from clothes.
Q44. When is World AIDS Day observed?
(A) 1st October
(B) 12th December
(C) 1st December
(D) 13th November
Answer: (C)
Exp: World AIDS Day is observed every year on 1 December. It was first observed in 1988 and focuses on HIV/AIDS awareness, prevention, treatment and remembrance.
Q45. The science of raising silkworms to obtain silk cocoons is:
(A) Apiculture
(B) Floriculture
(C) Silviculture
(D) Sericulture
Answer: (D)
Exp: Sericulture is the rearing of silkworms for silk production. Apiculture concerns bees, floriculture flowers, and silviculture the cultivation and management of forests.
Q46. The acid present in ‘vinegar’ is:
(A) Formic acid
(B) Acetic acid
(C) Sulphuric acid
(D) Nitric acid
Answer: (B)
Exp: Acetic acid (ethanoic acid), formula CH₃COOH, is the characteristic acid in vinegar.
Q47. In India, National Science Day is observed on:
(A) 5 June
(B) 5 September
(C) 28 February
(D) 2 October
Answer: (C)
Exp: 28 February 1928 marks C. V. Raman’s discovery of the Raman Effect; India observes National Science Day on this date.
Q48. In India, the right to property is now recognized as:
(A) fundamental right
(B) legal right
(C) natural right
(D) political right
Answer: (B)
Exp: The 44th Constitutional Amendment Act, 1978 removed the Right to Property from Fundamental Rights; it is now protected as a constitutional legal right under Article 300A.
Q49. Who was the Viceroy of India at the time of Jallianwala Bagh Massacre?
(A) Lord Hardinage
(B) Lord Irwin
(C) Lord Chelmsford
(D) Lord Curzon
Answer: (C)
Exp: The Jallianwala Bagh massacre occurred on 13 April 1919 during the tenure of Viceroy Lord Chelmsford.
Q50. Which of the following gases is most predominant in the Sun?
(A) Mithen
(B) Nitrogen
(C) Hydrogen
(D) Ozone
Answer: (C)
Exp: The Sun is composed mainly of hydrogen and helium. Hydrogen accounts for about 73–75% of the Sun’s mass, while nuclear fusion in its core converts hydrogen into helium and releases energy.
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Q51. Which one of the following organs excretes water, fat and various catabolic wastes?
(A) Kidney
(B) Skin
(C) Spleen
(D) Salivary glands
Answer: (A)
Exp: The kidneys are the principal excretory organs. They filter blood and remove nitrogenous wastes, excess water and salts through urine; their structural and functional units are called nephrons.
Q52. Cooking gas (L.P.G.) is a mixture of:
(A) Methane and Butane
(B) Ethane and Propane
(C) Propane and Butane
(D) Propane and Methane
Answer: (C)
Exp: LPG is mainly a mixture of the hydrocarbons propane and butane. It is stored as a liquid under pressure and vaporizes for use as a cooking fuel.
Q53. The human cell contains:
(A) 44 chromosomes
(B) 48 chromosomes
(C) 46 chromosomes
(D) 23 chromosomes
Answer: (C)
Exp: A normal human somatic cell contains 46 chromosomes, arranged in 23 pairs. Gametes such as sperm and ova contain 23 chromosomes.
Q54. Which of the following parts of our diet is required for bone and teeth structure?
(A) Potassium
(B) Iron
(C) Calcium
(D) Vitamin-C
Answer: (C)
Exp: Calcium is essential for the formation and maintenance of strong bones and teeth. It is also important for muscle contraction, nerve function and blood clotting.
Q55. Which of the following is called the laughing gas?
(A) Nitrogen Oxide
(B) Hydrogen Oxide
(C) Nitrous Oxide
(D) Sulphur Oxide
Answer: (C)
Exp: Nitrous oxide (N₂O) is commonly called laughing gas. It has been used medically as an analgesic and anaesthetic, although uncontrolled inhalation can be dangerous.
Q56. Spherical form of raindrop is due to:
(A) Density of liquid
(B) Surface tension of water
(C) Atmospheric pressure of Air
(D) Gravitational force of Earth
Answer: (B)
Exp: Raindrops tend towards a spherical shape because of surface tension. Surface tension minimizes the surface area of a liquid for a given volume.
Q57. The colour of milk of cow is yellow due to the presence of:
(A) Carotene
(B) Riboflavin
(C) Ribulose
(D) None of these
Answer: (A)
Exp: Carotene, especially beta-carotene, contributes to the yellowish colour of cow’s milk and dairy fat. It is a fat-soluble pigment obtained largely through the animal’s diet.
Q58. Malaria can be cured from a drug extracted from:
(A) Belladona tree
(B) Cinchona tree
(C) Oak tree
(D) Amaltas tree
Answer: (B)
Exp: Cinchona bark contains quinine and related alkaloids that were historically important in the treatment of malaria. Modern malaria treatment uses specific antimalarial medicines according to the parasite and clinical situation.
Q59. Hydrogen fuel cell vehicles produce one of the following as “exhaust”:
(A) NH3
(B) CH4
(C) H2O
(D) H2O2
Answer: (C)
Exp: A hydrogen fuel cell combines hydrogen and oxygen electrochemically to produce electricity. The main products are water and heat, so H₂O is the exhaust product.
Q60. At which temperature density of water is maximum?
(A) 4ºC
(B) 0ºC
(C) – 4ºC
(D) 100ºC
Answer: (A)
Exp: Water has its maximum density at about 4°C. This anomalous expansion of water is important for aquatic ecosystems because ice floats while denser water remains below.
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Q61. The normal temperature of the human body is:
(A) approximately 17ºC
(B) approximately 37ºC
(C) approximately 58ºC
(D) approximately 100ºC
Answer: (B)
Exp: The average normal human body temperature is about 37°C, although it varies with the individual, time of day and method of measurement.
Q62. The plants which prepare their own food are called:
(A) Heterotrophs
(B) Autotrops
(C) Saprophytes
(D) Parasites
Answer: (B)
Exp: Autotrophs are organisms capable of producing their own food, generally through photosynthesis or chemosynthesis. Green plants are the most familiar photosynthetic autotrophs.
Q63. The gas used in the artificial ripening of fruits is:
(A) Acetylene
(B) Methane
(C) Ethelene
(D) Butane
Answer: (C)
Exp: Ethylene is a plant hormone that promotes fruit ripening. Commercial ripening practices use controlled ethylene exposure; unsafe chemicals such as calcium carbide are not the same as ethylene-based ripening.
Q64. The Age of Trees is estimated by?
(A) Their heights
(B) Their weights
(C) Their elongation of Roots
(D) Counting the number of annual rings
Answer: (D)
Exp: The age of a tree is commonly estimated by counting its annual growth rings in the trunk. This method is called dendrochronology.
Q65. Who invented Jet Engine?
(A) Lewis waterman
(B) Roger Bacon
(C) Gottlieb Daimler
(D) Sir Frank whittle
Answer: (D)
Exp: Sir Frank Whittle developed the first practical turbojet engine in Britain. His pioneering jet-engine work was patented in 1930.
Q66. Which of the following planet has the highest rotational motion?
(A) Venus
(B) Mercury
(C) Earth
(D) Jupiter
Answer: (D)
Exp: Jupiter has the fastest rotation of the eight planets, completing one rotation in about 9 hours 56 minutes. Its rapid rotation contributes to its equatorial bulge.
Q67. Beri-Beri disease cause by?
(A) Vitamin B1
(B) Vitamin k
(C) Vitamin D
(D) Vitamin B6
Answer: (A)
Exp: Beriberi results primarily from deficiency of vitamin B1 (thiamine). It can affect the nervous system and cardiovascular system.
Q68. The famous “Dancing girl” found in the Mohenjo Daro was made up of?
(A) Red Limestone
(B) Bronze
(C) Steatite
(D) Terracotta
Answer: (B)
Exp: The famous Dancing Girl of Mohenjo-daro is a small bronze statue made using the lost-wax technique. It dates to the mature Harappan period, around the 3rd millennium BCE.
Q69. Rabies is caused by which of the following?
(A) Virus
(B) Fungi
(C) Bacteria
(D) protozoa
Answer: (A)
Exp: Rabies is caused by the rabies virus, a neurotropic virus transmitted mainly through the saliva of infected mammals, especially by bites.
Q70. Washing Soda is a common name of which of the following?
(A) Calcium Carbonate
(B) Calcium Bicarbonate
(C) Sodium Carbonate
(D) Sodium Bicarbonate
Answer: (C)
Exp: Washing soda is sodium carbonate decahydrate (Na₂CO₃·10H₂O). Sodium bicarbonate is baking soda, not washing soda.
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Q71. Who gave the rule of Genetics?
(A) Charles Darwin
(B) Otto hon
(C) Gregor Mendel
(D) Donald Bayer
Answer: (C)
Exp: Gregor Mendel established the basic laws of heredity through pea-plant experiments. His work, published in 1866, laid the foundation of modern genetics.
Q72. Sonar is based on the principle of?
(A) Reflection
(B) Resonance
(C) Echo
(D) Intensity of sounds & vibration
Answer: (C)
Exp: SONAR uses reflected ultrasonic waves; the returned signal is an echo used to determine distance or depth. The principle is therefore reflection of sound.
Q73. How many layers of skin does a human have?
Answer: (C)
Exp: Human skin is commonly described as having three layers: epidermis, dermis and the subcutaneous/hypodermal layer. The epidermis is the outermost layer.
Q74. Who discovered the Solar system?
(A) Aryabhatta
(B) Newton
(C) Copernicus
(D) Kepler
Answer: (C)
Exp: Nicolaus Copernicus proposed the heliocentric model in which Earth and the other planets revolve around the Sun. His major work De revolutionibus appeared in 1543.
Q75. Which one of the following parts of the human brain is the regulation center for vomiting?
(A) Cerebellum
(B) Medulla oblongata
(C) Pons
(D) All of the above
Answer: (B)
Exp: The medulla oblongata contains important autonomic centres, including the vomiting centre/reflex pathways. It also regulates vital functions such as breathing and cardiovascular activity.
Q76. Persons with which blood group are called universal donors?
Answer: (D)
Exp: In the ABO system, O negative red blood cells are commonly called the universal donor type because they lack A, B and Rh(D) antigens. The basic option “O” refers to this group.
Q77. Study of the sun is called?
(A) Coronagraphy
(B) Seismography
(C) Helioseismology
(D) Heliography
Answer: (C)
Exp: Helioseismology studies the internal structure and dynamics of the Sun through its oscillations, much like seismology studies Earth’s interior using seismic waves.
Q78. Which planets emits green light?
(A) Jupiter
(B) Uranus
(C) Venus
(D) Mercury
Answer: (B)
Exp: Uranus appears blue-green because methane in its atmosphere absorbs red wavelengths, leaving more blue-green light to be scattered and reflected.
Q79. What is the largest animal of present day world?
(A) Giraffe
(B) Elephant
(C) Orca
(D) Blue whale
Answer: (D)
Exp: The blue whale is the largest animal known to have lived and is the largest living animal today. Adults can exceed 25–30 metres in length.
Q80. The NASA spacecraft that entered the Sun’s atmosphere for the first time in history is?
(A) Parker Solar probe
(B) SpaceX
(C) Falcon6
(D) Solar orbiter
Answer: (A)
Exp: NASA’s Parker Solar Probe became the first spacecraft to fly through the Sun’s outer atmosphere, the corona, in 2021.
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Q81. Petrology is the study of?
(A) Land
(B) Soil
(C) Rock
(D) Water
Answer: (C)
Exp: Petrology is the branch of geology concerned with the origin, composition, structure and classification of rocks.
Q82. “Vindhyachal” thermal power station is located in which state?
(A) Uttarakhand
(B) Madhya pradesh
(C) Bihar
(D) Gujarat
Answer: (A)
Exp: The Vindhyachal Super Thermal Power Station is in Singrauli district, Madhya Pradesh. It is a major coal-based thermal power complex in the Singrauli energy region.
Q83. Cell phones (including smartphones) give off energy known as?
(A) Gamma rays
(B) X-rays
(C) Radiofrequency waves
(D) Microwaves
Answer: (B)
Exp: Mobile phones emit radiofrequency electromagnetic waves, a form of non-ionising radiation used to transmit and receive wireless signals.
Q84. Which layer protects Earth from harmful rays of the Sun?
(A) Lonosphere
(B) Ozone Layer
(C) Troposphere
(D) Magnetosphere
Answer: (C)
Exp: The ozone layer in the stratosphere absorbs much of the Sun’s harmful ultraviolet-B and ultraviolet-C radiation, helping protect life on Earth.
Q85. Which of the following is the most bad conductor of Heat?
(A) Copper
(B) Lead
(C) Mercury
(D) Zinc
Answer: (A)
Exp: Among the listed metals, lead is a comparatively poor conductor of heat. Metals generally conduct heat well, but their thermal conductivities differ substantially.
Q86. ______ Hormone regulates water level in the human body?
(A) FSH
(B) ADH
(C) ACTH
(D) HRP
Answer: (B)
Exp: Antidiuretic hormone (ADH), also called vasopressin, helps regulate body water by increasing water reabsorption in the kidneys.
Q87. What is the SI unit of power?
(A) Boyle
(B) Watt
(C) Pascal
(D) Hertz
Answer: (C)
Exp: The SI unit of power is the watt (W), named after James Watt. One watt equals one joule of energy transferred per second.
Q88. Which blood group is universal reciever?
Answer: (D)
Exp: People with blood group AB positive are universal recipients for red-cell transfusion because they lack anti-A and anti-B antibodies and are Rh positive.
Q89. Who invented radar?
(A) Fred Morrison
(B) A.H Taylor % Leo C. Young
(C) Van Tassel
(D) Roentgan
Answer: (C)
Exp: The source key credits radar invention to A. H. Taylor and Leo C. Young, who conducted pioneering radar experiments in the United States during the early twentieth century.
Q90. _____ is the largest gas present in the atmosphere?
(A) Nitrogen
(B) Oxygen
(C) CO2
(D) Methane
Answer: (A)
Exp: Nitrogen makes up about 78% of Earth’s atmosphere by volume, making it the most abundant atmospheric gas.
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Q91. Where is ozone layer located?
(A) Troposphere
(B) Mesosphere
(C) Stratosphere
(D) Thermosphere
Answer: (C)
Exp: The ozone layer is concentrated in the stratosphere, roughly 15–35 km above Earth’s surface, where ozone absorbs harmful ultraviolet radiation.
Q92. Carbohydrate is stored in the body as?
(A) Glucose
(B) Starch
(C) Glycogen
(D) Sucrose
Answer: (C)
Exp: The body stores excess carbohydrate mainly as glycogen, especially in the liver and skeletal muscles. Glucose is the immediate circulating form.
Q93. Who invented the X-Ray?
(A) Thomson
(B) Alexander cook
(C) Roentgen
(D) Thomas edison
Answer: (D)
Exp: Wilhelm Conrad Röntgen discovered X-rays in 1895. He received the first Nobel Prize in Physics in 1901.
Q94. Scurvy is a lack of vitamins of?
(A) Vitamin k
(B) Vitamin D
(C) Vitamin C
(D) Vitamin B6
Answer: (D)
Exp: Scurvy results from deficiency of vitamin C, causing impaired collagen formation, bleeding gums and poor wound healing.
Q95. _____ is/are known as the powerhouse of the cell?
(A) Cytoplasm
(B) Nucleus
(C) Endoplasmic reticulum
(D) Mitochondria
Answer: (C)
Exp: Mitochondria are called the powerhouse of the cell because they generate most cellular ATP through aerobic respiration. They possess their own DNA and ribosomes.
Q96. “Bhopal gas tragedy” is associated with leakage of?
(A) Carbon dioxide
(B) Nitrogen dioxide
(C) Sulphur dioxide
(D) Methyl isocynate
Answer: (D)
Exp: The Bhopal gas tragedy of 2–3 December 1984 involved leakage of methyl isocyanate (MIC) from the Union Carbide pesticide plant.
Q97. Insulin used to cure which Disease?
(A) Cancer
(B) HIV
(C) TB
(D) Diabetes
Answer: (D)
Exp: Insulin is the hormone used to control blood glucose in diabetes mellitus, especially when the body produces insufficient insulin.
Q98. The Sun rises in which state of India firstly?
(A) Meghalaya
(B) Manipur
(C) Arunachal pradesh
(D) Mizoram
Answer: (C)
Exp: The easternmost state of India, Arunachal Pradesh, is the first part of India to receive sunrise because of its far-eastern longitude.
Q99. Jaundice is associated with which organ?
(A) Lungs
(B) Kiver
(C) Kidney
(D) Stomach
Answer: (A)
Exp: Jaundice is commonly associated with the liver and involves accumulation of bilirubin in body tissues. It can result from liver disease, bile-duct obstruction or increased red-cell breakdown.
Q100. What is the chemical name of Ascorbic Acid?
(A) Fibrous acid
(B) Amino acid
(C) Asorbic acid
(D) Rentino acid
Answer: (B)
Exp: Ascorbic acid is the chemical name of vitamin C, a water-soluble vitamin essential for collagen synthesis and normal immune function.
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Q101. Who had discovered vitamins?
(A) Hipparchus
(B) Macroni
(C) Funk
(D) Dr. John Lofwein
Answer: (C)
Exp: Vitamins were discovered as a group of essential dietary factors through the work of Casimir Funk, who coined the term “vitamine” in 1912.
Q102. Which gas is found in the SUN maximum?
(A) Helium
(B) Hydrogen
(C) Nitrogen
(D) Methane
Answer: (C)
Exp: The Sun is composed predominantly of hydrogen, roughly three-quarters of its mass, with helium as the second most abundant element.
Q103. Why the colour of blood is Red?
(A) Haemoglobin
(B) Lactose
(C) Iron
(D) RBC
Answer: (B)
Exp: Blood is red mainly because red blood cells contain haemoglobin, an iron-containing protein that binds oxygen and gives blood its characteristic colour.
Q104. The release of which one of the following fish into ponds helps in controlling Mosquitoes?
(A) Crab
(B) Dogfish
(C) Gambusia fish
(D) Snail
Answer: (C)
Exp: Gambusia fish helps control mosquitoes by feeding on mosquito larvae. It is therefore used as a biological control agent in some water bodies.
Q105. Which planet is also called as Red Planet?
(A) Venus
(B) Mars
(C) Jupiter
(D) Saturn
Answer: (D)
Exp: Mars is called the Red Planet because iron minerals on its surface oxidise, producing a reddish appearance.
Q106. Who has the power to impose the “Marshal Law”?
(A) Prime minister
(B) Chief of defence
(C) President
(D) Home minister
Answer: (C)
Exp: The Constitution does not expressly provide a general power of “martial law” by the President. The source key identifies the President; martial-law powers are discussed in relation to Article 34.
Q107. The “Asteroid belt” is located between which two planets in the solar system?
(A) Earth and Mars
(B) Jupiter and Saturn
(C) Earth and Venus
(D) Mars and Jupiter
Answer: (A)
Exp: The asteroid belt lies between Mars and Jupiter. It contains millions of rocky bodies and separates the inner terrestrial planets from the outer planets.
Q108. Sex chromosome in human male is represented by?
(A) XO
(B) XX
(C) YY
(D) XY
Answer: (C)
Exp: A normal human male has XY sex chromosomes, while a normal female has XX. The Y chromosome carries the SRY gene involved in male sex determination.
Q109. Which of these is a viral disease?
(A) Tuberculosis
(B) Elephantiasis
(C) Japanese Encephalitis
(D) None of these
Answer: (A)
Exp: Japanese encephalitis is a viral disease caused by Japanese encephalitis virus and transmitted mainly by Culex mosquitoes.
Q110. There are how many players in Basketball?
(A) Five
(B) Six
(C) Seven
(D) Eight
Answer: (A)
Exp: A basketball team has 5 players on the court at one time. Substitutes remain outside and can enter according to the rules.
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Q111. The longest bone in the human body is?
(A) Ulna
(B) Femur
(C) Humerus
(D) Tibia
Answer: (B)
Exp: The femur, or thigh bone, is the longest and strongest bone in the human body. It extends from the hip to the knee.
Q112. An instrument used to measure Humidity is?
(A) Anemometer
(B) Thermometer
(C) Ammeter
(D) Hygrometer
Answer: (D)
Exp: A hygrometer measures atmospheric humidity. An anemometer measures wind speed, while a thermometer measures temperature.
Q113. Oxalic acid is present in which of the following?
(A) Milk
(B) Tamarind
(C) Tomato
(D) Lemon
Answer: (C)
Exp: Tomato contains oxalic acid among its organic acids. Oxalic acid is also found in several leafy vegetables and other plant foods.
Q114. “Mumps” is a disease caused by?
(A) Fungus
(B) Bacterium
(C) Virus
(D) Algae
Answer: (C)
Exp: Mumps is caused by a virus, specifically the mumps virus, and primarily affects the salivary glands.
Q115. Which is known as Regur Soil?
(A) Black Soil
(B) Red Soil
(C) Alluvial Soil
(D) Laterite Soil
Answer: (A)
Exp: Regur soil is another name for black soil. It is rich in clay and particularly suitable for cotton cultivation.
Q116. The concept of “Green House Gases” was postulated by?
(A) Abdul kalam
(B) Joseph Furier
(C) M.S Swaminathan
(D) Richael carlson
Answer: (B)
Exp: The greenhouse effect was first quantitatively described by Joseph Fourier in the 19th century. Greenhouse gases absorb and re-radiate outgoing infrared radiation.
Q117. The tribal population in Andaman & Nicobar islands belongs to the?
(A) Australoid race
(B) Caucasoid race
(C) Mongoloid race
(D) Negroid race
Answer: (D)
Exp: The source key identifies the Andaman and Nicobar tribal population with the Negroid race; this is an outdated racial classification. Modern anthropology uses distinct indigenous community and population classifications instead.
Q118. Which of the following is a naturally occuring hardest substance on earth?
(A) Graphite
(B) Galvanometer
(C) Iron
(D) Diamond
Answer: (D)
Exp: Diamond is the hardest naturally occurring mineral, with Mohs hardness 10. It is a crystalline form of carbon.
Q119. Who among the following is called “Laughing Gas”?
(A) Nitrous penta oxide
(B) Nitrous Oxide
(C) Amino dyoxide
(D) Neon
Answer: (B)
Exp: Nitrous oxide (N₂O) is commonly called laughing gas. It is also a greenhouse gas and has medical applications as an anaesthetic/analgesic.
Q120. The human Hormones is present in?
(A) Liver
(B) Kidney
(C) Thymus
(D) Pancreas
Answer: (D)
Exp: The pancreas is an endocrine gland that produces hormones such as insulin and glucagon. It also has an exocrine role in digestion.
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Q121. National Institute of “Virology” located in?
(A) Mumbai
(B) Delhi
(C) Pune
(D) Hyderabad
Answer: (C)
Exp: The National Institute of Virology is located in Pune, Maharashtra. It is a major Indian centre for virology research and surveillance.
Q122. The light from the Sun reaches the Earth in about?
(A) 8 seconds
(B) 10 seconds
(C) 10 minutes
(D) 8 minutes
Answer: (D)
Exp: Sunlight takes about 8 minutes 20 seconds to travel from the Sun to Earth, across an average distance of about 1 astronomical unit.
Q123. The body temperature is regulated by?
(A) Pituitary Gland
(B) Pineal Gland
(C) Hypothalamus
(D) Thyroid gland
Answer: (C)
Exp: The hypothalamus helps regulate body temperature by integrating signals from the body and coordinating heat-loss and heat-production responses.
Q124. Name the waste products secreted by Plants?
(A) Water vapour
(B) Carbon dioxide
(C) Oxygen
(D) All are correct
Answer: (D)
Exp: Plants can release water vapour, carbon dioxide and oxygen through processes such as transpiration, respiration and photosynthesis; hence the source answer is “all”.
Q125. The undigested food stored in the liver in the form of carbohydrate is called?
(A) Carbohydrate
(B) Glycogen
(C) Pulp
(D) Glucose
Answer: (B)
Exp: The carbohydrate stored in the liver is glycogen. It is a storage form of glucose that can be broken down to help maintain blood glucose levels.
Q126. On which plant “Mendel” did most of his experiments of Genetics?
(A) Mustard
(B) Potato
(C) Hibiscus
(D) Pea
Answer: (D)
Exp: Mendel conducted his classic inheritance experiments mainly on the garden pea (Pisum sativum). His results were published in 1866.
Q127. India’s first Super Computer is?
(A) Param
(B) Apollo
(C) SMP
(D) None of these
Answer: (A)
Exp: Param refers to PARAM, India’s indigenous supercomputer programme. PARAM 8000 was unveiled in 1991 by C-DAC.
Q128. Which of the following gas is used in “Fire Extinguisher”?
(A) Methane
(B) Butane
(C) Carbon Monoxide
(D) Carbon Dioxide
Answer: (D)
Exp: Carbon Dioxide is used in fire extinguishers because it is non-combustible and can suppress flames by displacing oxygen; CO₂ extinguishers are widely used for electrical fires.
Q129. The melting point of Ice on increasing the pressure?
(A) Increases
(B) Decreases
(C) Remains unchanged
(D) None of these
Answer: (B)
Exp: Decreases is correct because increasing pressure slightly lowers the melting point of ice due to the greater density of liquid water.
Q130. Which of the following is the “Lightest metal”?
(A) Sodium
(B) Magnesium
(C) Aluminium
(D) Lithium
Answer: (D)
Exp: Lithium is the lightest metal; its symbol is Li and atomic number is 3.
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Q131. What is the Scientific name of “Vitamin D”?
(A) Tocopherol
(B) Thiamin
(C) Calciferol
(D) Boitin
Answer: (C)
Exp: Calciferol is the scientific/common chemical name used for Vitamin D in basic nutrition; vitamin D includes forms such as D2 and D3.
Q132. What is the SI unit of Pressure?
(A) Pascal
(B) Joule
(C) Watt
(D) Amstong
Answer: (A)
Exp: Pascal is the SI unit of pressure. One pascal equals one newton per square metre.
Q133. Which of the following planets is known as a “Gas Giant”?
(A) Earth
(B) Mars
(C) Jupiter
(D) Venus
Answer: (C)
Exp: Jupiter is a gas giant. Jupiter is the largest planet and is composed mainly of hydrogen and helium.
Q134. The National Institute of “Nutrition” is located in?
(A) Shillong
(B) Indore
(C) Hyderabad
(D) Mumbai
Answer: (C)
Exp: Hyderabad is the city where the National Institute of Nutrition is located.
Q135. Which of the following gases is used for “Anesthesia”?
(A) Argon
(B) Xenon
(C) Helium
(D) Neon
Answer: (B)
Exp: Xenon can be used as an inhalational anaesthetic gas in specialised medical settings.
Q136. Among the following materials sound travels fastest in?
(A) Vaccum
(B) Water
(C) Air
(D) Steel
Answer: (D)
Exp: Steel transmits sound fastest among the listed media because sound generally travels faster in solids than in liquids or gases.
Q137. “Hydrogen” was discovered by?
(A) Rutherford
(B) Lavosier
(C) Cavendish
(D) Scheele
Answer: (C)
Exp: Cavendish is credited with discovering hydrogen as a distinct gas in 1766. He called it inflammable air.
Q138. The term “Blood Moon” is used to refer?
(A) Solar Eclipse
(B) Lunar Eclipse
(C) Full moon
(D) Crescent moon
Answer: (B)
Exp: Lunar Eclipse is a popular term for a total lunar eclipse, when the Moon can appear reddish because of Earth’s atmosphere.
Q139. Deficiency of “Thiamine” (Vitamin B1) results in which disease?
(A) Pellagra
(B) Beri Beri
(C) Scuvey
(D) Rickets
Answer: (B)
Exp: Beri Beri deficiency causes beriberi, a disease affecting the nervous system and cardiovascular system.
Q140. Which among the following is richest in Vitamin C?
(A) Soya Milk
(B) Apple
(C) Carrot
(D) Amla
Answer: (D)
Exp: The correct answer is Amla. This is the key factual association tested by the question and should be remembered with the subject named in the question.
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Q141. “Influenza” is a disease causes by?
(A) Virus
(B) Fungi
(C) Bacteria
(D) None of these
Answer: (A)
Exp: The correct answer is Virus. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q142. There is “No Vaccine” for which of the following “Hepatitis Virus”?
(A) Hepatitis A
(B) Hepatitis B
(C) Hepatitis C
(D) Hepatitis D ANSWERS:- SET- 21 1001) B 1011) B 1021) A 1031) B 1041) A 1002) C 1012) C 1022) C 1032) D 1042) D 1003) C 1013) A 1023) D 1033) A 1043) C 1004) A 1014) D 1024) B 1034) D 1044) A 1005) D 1015) C 1025) C 1035) B 1045) C 1006) A 1016) D 1026) D 1036) C 1046) D 1007) B 1017) A 1027) A 1037) A 1047) B 1008) B 1018) C 1028) B 1038) B 1048) C 1009) C 1019) D 1029) C 1039) C 1049) D 1010) D 1020) B 1030) D 1040) B 1050) C
Answer: (C)
Exp: The correct answer is Hepatitis C. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q143. Chemical name of “Vitamin B2”?
(A) Thiamine
(B) Riboflavine
(C) Biotin
(D) None of these
Answer: (B)
Exp: Riboflavine is Vitamin B2, also called riboflavin, an important water-soluble vitamin involved in energy metabolism.
Q144. The process of “Blood Clotting” is known as?
(A) Coagulation
(B) Thrombycytopenia
(C) Haemophilia
(D) Homophobia
Answer: (A)
Exp: Coagulation is the process by which blood forms a clot to stop bleeding.
Q145. “Cobalamin” is the scientific name of Vitamin___?
(A) B1
(B) C
(C) B12
(D) E
Answer: (C)
Exp: B12 is Vitamin B12, also called cobalamin, essential for red blood cell formation and nervous-system function.
Q146. “Pituitary gland” is located in?
(A) Brain
(B) Liver
(C) Kidney
(D) Intestine
Answer: (A)
Exp: The correct answer is Brain. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q147. Gobar Gas mainly contains?
(A) Carbon dioxide
(B) Oxygen
(C) Methane
(D) Hydrogen sulphide
Answer: (C)
Exp: The correct answer is Methane. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q148. Which is the purest form of Iron?
(A) Steel
(B) Cast Iron
(C) Pig iron
(D) Wrought iron
Answer: (D)
Exp: The correct answer is Wrought iron. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q149. “Ringworm” is a disease caused by?
(A) Bacteria
(B) Fungus
(C) Virus
(D) Algae
Answer: (B)
Exp: The correct answer is Fungus. This is the key factual association tested by the question and should be remembered with the subject named in the question.
Q150. An Adult human being has 206 bones, but infants are born with more. How many bones are babies born with?
(A) 222
(B) 250
(C) 280
(D) 300
Answer: (D)
Exp: The correct answer is 300. This is the key factual association tested by the question and should be remembered with the subject named in the question.
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Q151. The father of modern chemistry is?
(A) Priestley
(B) Lavoisier
(C) Dalton
(D) Mendeleeff
Answer: (B)
Exp: Lavoisier is widely regarded as the father of modern chemistry because of his systematic experiments and law of conservation of mass.
Q152. Which is the first “Atomic power plant” of India?
(A) Tarapur
(B) Narora
(C) Kalpakkam
(D) Cossipore
Answer: (A)
Exp: Tarapur Atomic Power Station was India’s first commercial nuclear power station, commissioned in 1969.
Q153. Which metal was first used by the “Vedic People”?
(A) Silver
(B) Gold
(C) Iron
(D) Copper
Answer: (D)
Exp: The Vedic people used copper extensively; the Rigvedic period is generally placed around the 2nd millennium BCE.
Q154. “A light year” is a unit of which of the following?
(A) Light
(B) Speed
(C) Sound
(D) Distance
Answer: (D)
Exp: A light-year is a unit of distance, equal to the distance light travels in vacuum in one year, about 9.46 trillion km.
Q155. Which type of sound is produced by a “Bat”?
(A) Subsonic
(B) Ultrasonic
(C) Supersonic
(D) Infrasonic
Answer: (B)
Exp: Bats produce and detect ultrasonic sound for echolocation; frequencies commonly exceed the human hearing limit of 20 kHz.
Q156. Which form of phosphorus is used in “Safety Matches”?
(A) Red phosphrous
(B) Black phosphrous
(C) White phosphrous
(D) Yellow Phosphrous
Answer: (A)
Exp: Red phosphorus is used on the striking surface of safety matches; it is less reactive than white phosphorus and is comparatively safer to handle.
Q157. Which of the following is known as “Brown Coal”?
(A) Anthracite
(B) Bituminous
(C) Coke
(D) Lignite
Answer: (B)
Exp: Lignite is called brown coal; it has lower carbon content and higher moisture than bituminous and anthracite coal.
Q158. Which atomic power station in India is built completley indigenously?
(A) Narora
(B) Kalpakkam
(C) Rawat bhata
(D) Tarapore
Answer: (C)
Exp: The Madras Atomic Power Station at Kalpakkam includes India’s indigenously developed PHWR technology; the Madras Atomic Power Station began operation in the 1980s.
Q159. “Haemophilia” is a genetic disorder which leads to__?
(A) Decrease in haemoglobine level
(B) Rhematic heart disease
(C) Decrease in WBC
(D) Non clotting of blood
Answer: (D)
Exp: Haemophilia is an inherited bleeding disorder in which clotting is impaired, commonly because of deficiency of factor VIII or IX.
Q160. “Cancer treatment” is done by which of the following gas?
(A) Helium
(B) Radon
(C) Krypton
(D) Neon
Answer: (B)
Exp: Radon is a radioactive noble gas; historically, radon brachytherapy sources were used in cancer treatment, though modern oncology uses more controlled radiation technologies.
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Q161. The outer part of coconut is made up of which tissue?
(A) Parenchyma
(B) Sieve tubes
(C) Collenchyma
(D) Sclerenchyma
Answer: (D)
Exp: The fibrous outer husk of coconut contains abundant sclerenchymatous fibres, which provide mechanical strength.
Q162. “Bee-Keeping” is called as ?
(A) Horticulture
(B) Sericulture
(C) Apiculture
(D) Pisciculture
Answer: (A)
Exp: Apiculture is the scientific practice of beekeeping; honey bees are maintained for honey, wax and pollination.
Q163. “Palaeontology is the study of?
(A) Fossils
(B) Rocks
(C) Soils
(D) Tree
Answer: (A)
Exp: Palaeontology is the study of fossils and ancient life preserved in geological strata.
Q164. Which one among the following is known as “Animal Starch”?
(A) Cellulose
(B) Glucose
(C) Pectin
(D) Glycogen
Answer: (D)
Exp: Glycogen is called animal starch; it is the principal storage polysaccharide in animals and is stored mainly in liver and muscles.
Q165. Which Vitamin is made at a higher rate in our body?
(A) Vitamin A
(B) Vitanmin B
(C) Vitamin C
(D) Vitamin D
Answer: (B)
Exp: Humans can synthesize Vitamin D in the skin when ultraviolet-B radiation converts 7-dehydrocholesterol into vitamin-D precursors.
Q166. H1N1 viruses are the cause of which of the following diseases?
(A) Ebola
(B) Swine flu
(C) Polio
(D) Tuberculosis
Answer: (B)
Exp: H1N1 influenza viruses cause swine flu; the 2009 pandemic was caused by an H1N1 influenza A virus.
Q167. “Central Institute for Research on Buffaloes” is situated in ?
(A) Hisar
(B) Gurgaon
(C) Jhajjar
(D) Panipat
Answer: (C)
Exp: The Central Institute for Research on Buffaloes is located at Hisar, Haryana and conducts research on buffalo production and health.