Chemistry- Questions and Answers – 20
611. Element stored in wax: Lithium 612. Sodium and potassium are kept in:Kerosene 613. Rubber is soluble in: Benzene (C6H6) 614. The only acid shows the characteristics
611. Element stored in wax: Lithium 612. Sodium and potassium are kept in:Kerosene 613. Rubber is soluble in: Benzene (C6H6) 614. The only acid shows the characteristics
576. The gas emitted by burning wood is mainly: Carbon dioxide 577. Containers for carrying strong acids are made of: Lead 578. The process of
541. What is the commercial name of calcium nitrate? Norwegian saltpetre 542. Which are the important phosphatic fertilisers? Calcium superphosphate, nitro phosphate & triple phosphate
506. What causes the foul smell of the rancid butter? Butyric acid 507. Which compound of silver is used in the silvering of mirrors? Silver
471. The geosynchronous satellites orbit——- km above the earth? 36,000 km 472. Which substance has the highest expansivity in normal temperature? Caesium 473. What is
436. Which metal is used in the fireworks to give them a purple colour? Rubidium 437. Which is the least electronegative & the most electropositive
411. Amyl acetate has the smell of: (a) Grapes (b) Orange (c) Pineapple (d) Banana Answer: (d) 412. Which one of the following is not
381. The acid in soft drinks: (a) Acetic acid (b) Carbolic acid (c) Citric acid (d) Carbonic acid Answer: (d) 382. The acid present in
351. The isotope used for the treatment of Cancer: (a) Carbon-14 (b) Uranium-238 (c) Cobalt-60 (d) None of these Answer: (c) 352. The chemical property
321. Wax is soluble in: (a) Benzene (b) Water (c) Alcohol (d) Iodine Answer: (a) 322. The acid contained in onion: (a) Oxalic acid (b)
291. If the pH value of a substance is below 7, it is: (a) Acid (b) Base (c) Neutral (d) Water Answer: (a) 292. The
226. Gunmetal is made from- tin and copper. 227. Cobalt is used in making- rust-resistant alloys. 228. Steel is a form of iron. To make
191. Butane is used in- cigarette lights. 192. A mixture of oxygen and acetylene gases are used for- gas welding. 193. Methane is the main
161. The permanent hardness of water can be removed by adding — Answer: Washing Soda 162. The alcohol used in power alcohol is Answer: ethyl
126. The gas usually filled in an electric bulb is — Answer: Nitrogen 127. Sodium burns in air to give- Answer: Sodium peroxide 128. Which
91. Which of the following is the lightest metal? Answer: Lithium 92. Carborundum is — Answer: Silicon Carbide 93. Carbon, diamond and graphite are together
61. Sir Humphry Davy discovered: (a) Helium (b) Hydrogen (c) Sodium (d) Oxygen Answer: (c) 62. A natural fertilizer: (a) Urea
31. The element used for radiographic imaging: (a)Calcium (b) Strontium (c) Barium (d) Beryllium Answer: (c)
1. The gas formed when Potassium permanganate is heated: (a) Nitrogen (b) Oxygen (c) Hydrogen (d) Ammonia Answer: ( b) 2. The pungent smell emitted
131. Fermionic condensates are……th form of matter (a) 8 (b) 7 (c) 6
1. Bardeen and Shockley are related to the invention of: (a) Transformer (b) Tank (c) Transistor (d) Vacuum cleaner Answer: ( c) 2. Father of
1. Genetic Engineering belongs to the science of ——: (a) Biology (b) Zoology (c) Botany (d) Biotechnology Answer:
1. A Pigment responsible for photo morphogenetic responses is – Answer: phytochrome 2. Father of gene therapy- Answer: Anderson 3. Smallest living cell- Answer: RBC 4.
531. Fish that have hand and legs: Answer: Latimer 532. Tusk of the elephant is a modification of: Answer: Incisors 533. Ichthyology is the study
501. Vermiculture is related to: Answer: Earth Worm 502. Silver Revolution is related to the enhanced production of: Answer: Poultry 503. White Revolution is related
471. The organism that survived evolution: Cockroach 472. The second-largest animal in cat family: Lion 473. What is known as ‘poor man’s cow’? Goat 474.
435. The sugar present in milk is Lactose 436. Vermiculture is related to: Earth Worm 437. Silver Revolution is related to the en- hanced production
366. Pasteurisation of milk is: (a) Heating to 62⁰C (b) Heating to 100⁰C (c)
301. Which organism has the heaviest brain? Answer: Sperm Whale 302. Which organism has the heaviest tongue? Answer: Whale 303.The heaviest snake: Answer: Anaconda 304.The
271.The diameter of the eyeball: Answer: 2.5 cm 272. Night blindness is caused by the deficiency of vitamin: Answer: A 273. Which organism has the
236.The most intelligent bird: Answer: Blue tit 237.The only animal in cat family that cannot retract its nails: Answer: Cheetah 238.The slowest fish: Answer: Seahorse
201.The animal that has a prehensile nose: Answer: Elephant 202.The birds that can fly underwater: Answer: Penguin 203.The condition of the eye in which both
166.The enzyme contained in tear: Answer: Lysozyme 167.The fastest-moving bird: Answer: Perigrine Falcon 168. Which organism has red sweat: Answer: Hippopotamus 169. Which organism has
131 Pulse polio program is for children under the following age group Answer: 5 years 132.Answer: Intestine 133. Which is the most abundant element found
96. Bile is stored in? Answer: Gallbladder 97. World coconut day is celebrated on Answer: September 2 98. To which category does onion belong? Answer:
61. Human Heart is enclosed by a sac known as the (a) Atria (b) Chordae tendineae (c) Pericardium (d) Aorta Answer: (c) 62. Acid Rain
31. The length of the spinal cord is about A. 60 cm B. 45 cm C. 90 cm D. 10 cm Answer:(b ) 32. Rabies
1. Who is called Father of Genetics? A. Salk B. Mendel C. Linnaeus D. Hugo de vries Answer:( b) 2. Mycology is the study of
1031. Photo Electric effect was discovered by – Henrich Hertz 1032. The pigment which gives orange colour to a carrot – Carotene 1033. Planet Venus
1001. Kreb’s cycle takes place in – Mitochondria 1002. ………………….. is the longest glacier found in the world. – Lambert-Fisher (Australia) 1003. The largest blood
966. Downs syndrome is also known as – Trisomy 21. 967. Electromagnetic Induction was discovered by – Michael Faraday 968. An element having the name
931. The element stored in oil due to its high reactivity – Barium 932. The element which has the highest reactivity or electronegativity – Fluorine
901. Summer sleep of animals is known as – aestivation. 902. ‘The true sign of intelligence is not knowledge but imagination’ – Albert Einstein. 903.
866. Which chemical is used for the preservation of a biological specimen? Formalin 867. What are the constituent elements of sugar? Carbon, Hydrogen and Oxygen
866. Which chemical is used for the preservation of a biological specimen? Formalin 867. What are the constituent elements of sugar? Carbon, Hydrogen and Oxygen
831. What is the chemical name of Ajinomoto? Monosodium Glutamate 832. What is known as ‘the wonder child of electronics’? Transistors 833. Which acid is
796. What is the use of a commutator? To change the direction of electric current 797. Which is known as ‘the stress hormone’ in plants?