GK INFOPEDIA

[1] Which one of the following is not a constituent of biogas? A. Methane B. Carbon dioxide C. Hydrogen D. Nitrogen dioxide Ans: Nitrogen dioxide Explanation : Nitrogen dioxide is not a component of biogas. Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion. The major constituent of biogas is methane […]

[1] Rabies is caused by – A. bacteria B. virus C. fungus D. algae Ans: virus Explanation : Rabies is a viral disease that causes acute encephalitis in warm-blooded animals. The disease is zoonotic, meaning it can be transmitted from one species to another, such as from dogs to humans, commonly by a bite from […]

[1] The animal which uses sounds as its ‘eyes’ is – A. Dog B. Cat C. Snake D. Bat Ans: Bat Explanation : Bat echolocation is a perceptual system where ultrasonic sounds are emitted specifically to produce echoes. By comparing the outgoing pulse with the returning echoes, the brain and auditory nervous system can produce […]

[1] Kidney disease in man is caused by the pollutant – A. Cadmium B. Iron C. Cobalt D. Carbon Ans: Cadmium Explanation : Cadmium (Cd), a by-product of zinc production, is one of the most toxic elements to which man can be exposed at work or in the environment. Once absorbed, Cd is efficiently retained […]

[1] Aquatic animal with the most developed intelligence is – A. Shark B. Whale C. Flying fish D. Sea horse Ans: Shark Explanation : In terms of brain shape, the shark brain differs a lot from that of mammals and birds. However, in proportion to the body size shark brains usually are similar sized or […]

[1] The most suitable soil for the production of cotton is – A. Black lava soil B. Alluvial soil C. Loamy soil D. Well drained soil Ans: Black lava soil Explanation : Black soil is most suitable for the cultivation of cotton. The deep and medium black lava soil of the Deccan and Malwa plateaus […]

[1] The large amount of sugar present in human blood is – A. sucrose B. glucose C. fructose D. lactose Ans: glucose Explanation : The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels […]

[1] Which enzyme converts proteins? A. Pepsin B. Trypsin C. Erepsin D. Enterokinase Ans: Trypsin Explanation : Trypsin is a serine protease found in the digestive system of many vertebrates, where it hydrolyses proteins. Trypsin in the duodenum catalyses the hydrolysis of peptide bonds so that proteins can be broken down into smaller peptides. These […]

[1] Hypothermia occurs due to loss of excessive heat from body due to sudden low body temperature in: A. Frogs B. Human beings C. Lizards D. Snakes Ans: Human beings Explanation : Normal human body temperature in adults is 34.4-37.8 °C. Sometimes a narrower range is stated, such as 36.5-37.5 °C. Hypothermia is defined as […]

[1] Which acid is present in lemon – A. malic acid B. citric acid C. lactic acid D. tartaric acid Ans: citric acid Explanation : The main organic acids contained in the flesh of lemons are citric acid and malic acid. The sourness of citrus fruit is the taste of citric acid. [2] One of […]