DHS 2022 Grade-4

DHS / 50 Questions

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Q1. Simplify and choose the correct answer: (-4/5) × (3/16) ÷ (−9/4).
(A) −1/2
(B) 1/2
(C) −1/3
(D) 1/4
Answer: (B)
Exp: Multiplication and division of fractions are performed left to right; simplify by multiplying by reciprocals. The two negative signs produce a positive result, and the expression reduces to 1/2.
Q2. The sum of two numbers is 74. One number is 10 more than the other. What are the numbers?
(A) 18 and 28
(B) 20 and 30
(C) 24 and 34
(D) 32 and 42
Answer: (D)
Exp: Let the smaller number be x. Then x + (x + 10) = 74, so 2x = 64 and x = 32. The numbers are 32 and 42.
Q3. The perimeter of a rectangle is 13 cm and its width is 2¾ cm. What is its length?
(A) 2¾ cm
(B) 3¾ cm
(C) 4¾ cm
(D) 5¾ cm
Answer: (B)
Exp: For a rectangle, P = 2(l + w). Thus l = P/2 − w = 6.5 − 2.75 = 3¾ cm.
Q4. In a right triangle, the hypotenuse and a side are 5 cm and 3 cm respectively. What is the length of the other side?
(A) 2 cm
(B) 3 cm
(C) 4 cm
(D) 5 cm
Answer: (C)
Exp: By the Pythagorean theorem, the missing side is √(5² − 3²) = √16 = 4 cm.
Q5. What is the smallest whole number by which 2028 must be multiplied to get a perfect square?
(A) 2
(B) 3
(C) 4
(D) 5
Answer: (B)
Exp: Prime factorization: 2028 = 2² × 3 × 13². The odd exponent of 3 must be paired, so multiply by 3 to make every prime exponent even.
Q6. A scooter cost ₹34,000 last year. Its price increased by 20% this year. What is its new price?
(A) ₹38,600
(B) ₹38,800
(C) ₹40,800
(D) ₹40,600
Answer: (C)
Exp: A 20% increase is 0.20 × ₹34,000 = ₹6,800. New price = ₹34,000 + ₹6,800 = ₹40,800.
Q7. If (−3)^(m+1) × (−3)^5 = (−3)^7, find m.
(A) 1
(B) 2
(C) 3
(D) 4
Answer: (A)
Exp:
Q8. If 15 workers can build a wall in 48 hours, how many workers are needed to do the same work in 30 hours?
(A) 20
(B) 24
(C) 30
(D) 35
Answer: (B)
Exp: For fixed work, workers and time are inversely proportional. Required workers = 15 × 48/30 = 24 workers.
Q9. The cost of 5 metres of a particular cloth is ₹210. What is the cost of 13 metres of the same cloth?
(A) ₹420
(B) ₹424
(C) ₹546
(D) ₹645
Answer: (C)
Exp: Unit price = ₹210 ÷ 5 = ₹42 per metre. Cost of 13 metres = 13 × ₹42 = ₹546.
Q10. When a two-digit number is reversed, a new two-digit number is formed which is 63 more than the original. What was the original number?
(A) 25
(B) 36
(C) 28
(D) 29
Answer: (D)
Exp: Let the number be 10x + y. Reversal gives 10y + x; the difference is 9(y − x) = 63, so y − x = 7. Among the choices, 29 satisfies the condition.

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Q11. Which is the most populous country in the world?
(A) China
(B) India
(C) Brazil
(D) Russia
Answer: (B)
Exp: India became the world’s most populous country, surpassing China, according to the UN population estimates published in 2023.
Q12. What is the capital of Sri Lanka?
(A) Saligon
(B) Trincomalee
(C) Kandy
(D) Colombo
Answer: (D)
Exp: Sri Jayawardenepura Kotte is Sri Lanka’s legislative capital; Colombo remains its largest city and major commercial centre. The paper’s keyed option is Colombo.
Q13. Who was the first woman to receive the Bharat Ratna?
(A) Sucheta Kripalani
(B) Indira Gandhi
(C) Lata Mangeshkar
(D) Kalpana Chawla
Answer: (B)
Exp: Indira Gandhi received the Bharat Ratna in 1971, becoming the first woman recipient.
Q14. Who is the author of the book The Discovery of India?
(A) R. K. Narayan
(B) Jawaharlal Nehru
(C) Indira Gandhi
(D) Swami Sivananda
Answer: (B)
Exp: Jawaharlal Nehru wrote The Discovery of India while imprisoned at Ahmednagar Fort during 1942–1945.
Q15. Who was the first human in space?
(A) Neil Armstrong
(B) Edwin Aldrin
(C) Yuri Gagarin
(D) Valentina Tereshkova
Answer: (C)
Exp: Soviet cosmonaut Yuri Gagarin became the first human in space on 12 April 1961, aboard Vostok 1.
Q16. Who was the founder of Sikh religion?
(A) Guru Ram Das
(B) Guru Gobind Singh
(C) Guru Nanak Dev
(D) Guru Tegh Bahadur
Answer: (C)
Exp: Guru Nanak Dev (1469–1539) founded Sikhism and was the first of the ten Sikh Gurus.
Q17. Who is known as the “Iron Man of India”?
(A) Sardar Vallabhbhai Patel
(B) Dr. B. R. Ambedkar
(C) Dadabhai Naoroji
(D) Mahatma Gandhi
Answer: (A)
Exp: Sardar Vallabhbhai Patel is known as the Iron Man of India for his role in integrating princely states after independence.
Q18. When is Teachers’ Day celebrated in India?
(A) 1 May
(B) 5 September
(C) 14 November
(D) 10 December
Answer: (B)
Exp: India observes Teachers’ Day on 5 September, the birth anniversary of former President and teacher Dr. Sarvepalli Radhakrishnan.
Q19. Which of the following leaders was not a President of India?
(A) Neelam Sanjiva Reddy
(B) Giani Zail Singh
(C) K. R. Narayanan
(D) Uma Bharti
Answer: (D)
Exp: Uma Bharti is an Indian politician who served as Chief Minister of Madhya Pradesh; she was not a President of India.
Q20. Where is the headquarters of the World Health Organization situated?
(A) New York
(B) Washington, DC
(C) Geneva
(D) Paris
Answer: (C)
Exp: The World Health Organization (WHO) is headquartered in Geneva, Switzerland.

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Q21. Davis Cup is associated with which sport?
(A) Football
(B) Lawn Tennis
(C) Badminton
(D) Hockey
Answer: (B)
Exp: The Davis Cup is the major international team competition in men’s tennis, organized by the International Tennis Federation.
Q22. Who appoints the Chief Minister of an Indian state?
(A) President of India
(B) Governor of the State
(C) Speaker of Legislative Assembly
(D) Speaker of Legislative Council
Answer: (B)
Exp: Under Article 164, the Governor appoints the Chief Minister; conventionally, the person who commands the Assembly majority is invited to form the government.
Q23. Where is the Golden Temple of the Sikhs situated?
(A) Chandigarh
(B) Jalandhar
(C) Ludhiana
(D) Amritsar
Answer: (D)
Exp: The Golden Temple (Harmandir Sahib) is situated in Amritsar, Punjab.
Q24. What was the old name of Chennai?
(A) Cochin
(B) Ceylon
(C) Coonoor
(D) Madras
Answer: (D)
Exp: Chennai was known as Madras until the city was officially renamed Chennai in 1996.
Q25. In which Indian state is Namdapha National Park situated?
(A) Sikkim
(B) Assam
(C) Arunachal Pradesh
(D) Nagaland
Answer: (C)
Exp: Namdapha National Park is located in Arunachal Pradesh, in the Eastern Himalayas near the Myanmar border.
Q26. Who was the last Mughal Emperor?
(A) Shah Jahan
(B) Aurangzeb
(C) Jahangir
(D) Bahadur Shah Zafar
Answer: (D)
Exp: Bahadur Shah Zafar II was the last Mughal emperor. The British exiled him after the Revolt of 1857.
Q27. Who established the Maurya Dynasty?
(A) Chandragupta Maurya
(B) Chandragupta I
(C) Ashoka
(D) Kanishka
Answer: (A)
Exp: Chandragupta Maurya founded the Maurya Empire around 322 BCE, with guidance traditionally attributed to Chanakya (Kautilya).
Q28. During whose rule did the Chinese pilgrim Hiuen Tsang visit India?
(A) Harshavardhana
(B) Vikramaditya
(C) Ashoka
(D) Samudragupta
Answer: (A)
Exp: The Chinese Buddhist pilgrim Xuanzang (Hiuen Tsang) visited India during the reign of Harshavardhana in the 7th century CE.
Q29. Who was the first Prime Minister of independent India?
(A) Rajendra Prasad
(B) Jawaharlal Nehru
(C) Sardar Vallabhbhai Patel
(D) Jayaprakash Narayan
Answer: (B)
Exp: Jawaharlal Nehru became India’s first Prime Minister on 15 August 1947.
Q30. Who won the First Battle of Panipat?
(A) Akbar
(B) Babur
(C) Prithviraj Chauhan
(D) Rana Pratap
Answer: (B)
Exp: Babur defeated Ibrahim Lodi at the First Battle of Panipat on 21 April 1526, establishing Mughal rule in India.

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Q31. Which of the following is not a fossil fuel?
(A) Coal
(B) Petrol
(C) Natural gas
(D) Vegetable oil
Answer: (D)
Exp: Coal, petroleum products and natural gas are fossil fuels. Vegetable oil is derived from recent biological material and is renewable.
Q32. Which of the following is essential for combustion?
(A) Oxygen
(B) Carbon dioxide
(C) Nitrogen
(D) Sulphur dioxide
Answer: (A)
Exp: Combustion generally requires fuel, heat and an oxidizer. In ordinary burning, oxygen supports the reaction.
Q33. The nucleus of a living cell contains which of the following?
(A) Mitochondria
(B) Ribosomes
(C) Chromosomes
(D) Golgi bodies
Answer: (C)
Exp: The cell nucleus contains chromosomes, which consist of DNA and associated proteins and carry hereditary information.
Q34. Which of the following is not a female reproductive organ?
(A) Ovary
(B) Fallopian tube
(C) Breast
(D) Uterus
Answer: (C)
Exp: The breast is a mammary gland involved in lactation, not an internal female reproductive organ. The ovary, fallopian tube and uterus are reproductive organs.
Q35. Which of the following is true?
(A) Sound cannot travel through liquid
(B) Sound cannot travel through gas
(C) Sound cannot travel through solid
(D) Sound cannot travel in vacuum
Answer: (D)
Exp: Sound is a mechanical wave and requires a material medium; it cannot travel through a vacuum.
Q36. Which of the following is a good conductor of electricity?
(A) Plastic
(B) Copper
(C) Rubber
(D) Glass
Answer: (B)
Exp: Copper is an excellent electrical conductor because it contains mobile electrons; it is widely used in electrical wiring.
Q37. Which of the following is not a part of the human eye?
(A) Cornea
(B) Retina
(C) Tear
(D) Lens
Answer: (C)
Exp: The cornea, retina and lens are structures of the eye. Tears are a protective secretion produced by the lacrimal glands, not an anatomical component of the eyeball.
Q38. Which of the following is not a planet of the Sun?
(A) Sirius
(B) Mercury
(C) Saturn
(D) Earth
Answer: (A)
Exp: Sirius is a star, the brightest star in the night sky as seen from Earth; Mercury, Saturn and Earth are planets.
Q39. Which of the following is a greenhouse gas?
(A) Oxygen
(B) Hydrogen
(C) Carbon dioxide
(D) Neon
Answer: (C)
Exp: Carbon dioxide (CO₂) absorbs and emits infrared radiation and contributes to the greenhouse effect.
Q40. Which of the following is a synthetic fibre?
(A) Rayon
(B) Silk
(C) Cotton
(D) Jute
Answer: (A)
Exp: Rayon is a manufactured regenerated-cellulose fibre; silk, cotton and jute are natural fibres.

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Q41. The synonym of “affection” is _____.
(A) Charm
(B) Love
(C) Favour
(D) Luck
Answer: (B)
Exp: Affection means fondness, warmth or love toward someone or something.
Q42. Fill in the blank: “He could not _____ his homework properly.”
(A) complete
(B) completed
(C) completing
(D) completes
Answer: (A)
Exp: After the modal verb “could,” the main verb takes its base form. Therefore, the correct construction is “could not complete.”
Q43. Complete the proverb: “An _____ a day keeps the doctor away.”
(A) orange
(B) apple
(C) apricot
(D) olive
Answer: (B)
Exp: The standard proverb is “An apple a day keeps the doctor away,” expressing the general value of a healthy diet.
Q44. What is the opposite gender of “bride”?
(A) Princess
(B) Spinster
(C) Groom
(D) Dutch
Answer: (C)
Exp: The masculine counterpart of a bride is a groom.
Q45. What is the past tense of “drive”?
(A) Driven
(B) Drives
(C) Driving
(D) Drove
Answer: (D)
Exp: “Drive” is an irregular verb: present drive, simple past drove, past participle driven.
Q46. Complete the sentence using the correct preposition: “She has been waiting _____ 5 o’clock.”
(A) against
(B) for
(C) since
(D) at
Answer: (C)
Exp: Use since with a specific starting point in time; use “for” with a duration. “Since 5 o’clock” indicates when the waiting began.
Q47. What is a group of lions called?
(A) Swarm
(B) Pod
(C) Army
(D) Pride
Answer: (D)
Exp: A group of lions is commonly called a pride.
Q48. A person who cuts and sells meat is called a _____.
(A) butler
(B) butcher
(C) savage
(D) barber
Answer: (B)
Exp: A butcher is a person who prepares and sells meat.
Q49. Which of the following is correct?
(A) A lion cries.
(B) A donkey moos.
(C) A horse neighs.
(D) A cow brays.
Answer: (C)
Exp: A horse neighs; a donkey brays, a cow moos, and a lion roars.
Q50. What is the house of a dog called?
(A) Sty
(B) Hole
(C) Lair
(D) Kennel
Answer: (D)
Exp: A dog’s shelter or house is called a kennel.
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