General Science

Petrology is the branch of geology concerned with the origin, composition, structure and classification of rocks.

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.

Mobile phones emit radiofrequency electromagnetic waves, a form of non-ionising radiation used to transmit and receive wireless signals.

The ozone layer in the stratosphere absorbs much of the Sun’s harmful ultraviolet-B and ultraviolet-C radiation, helping protect life on Earth.

Among the listed metals, lead is a comparatively poor conductor of heat. Metals generally conduct heat well, but their thermal conductivities differ substantially.

Antidiuretic hormone (ADH), also called vasopressin, helps regulate body water by increasing water reabsorption in the kidneys.

The SI unit of power is the watt (W), named after James Watt. One watt equals one joule of energy transferred per second.

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.

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.

Nitrogen makes up about 78% of Earth’s atmosphere by volume, making it the most abundant atmospheric gas.

The ozone layer is concentrated in the stratosphere, roughly 15–35 km above Earth’s surface, where ozone absorbs harmful ultraviolet radiation.

The body stores excess carbohydrate mainly as glycogen, especially in the liver and skeletal muscles. Glucose is the immediate circulating form.

Wilhelm Conrad Röntgen discovered X-rays in 1895. He received the first Nobel Prize in Physics in 1901.

Scurvy results from deficiency of vitamin C, causing impaired collagen formation, bleeding gums and poor wound healing.

Mitochondria are called the powerhouse of the cell because they generate most cellular ATP through aerobic respiration. They possess their own DNA and ribosomes.

The Bhopal gas tragedy of 2–3 December 1984 involved leakage of methyl isocyanate (MIC) from the Union Carbide pesticide plant.

Insulin is the hormone used to control blood glucose in diabetes mellitus, especially when the body produces insufficient insulin.

The easternmost state of India, Arunachal Pradesh, is the first part of India to receive sunrise because of its far-eastern longitude.

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.

Ascorbic acid is the chemical name of vitamin C, a water-soluble vitamin essential for collagen synthesis and normal immune function.