General Science - 3

31. Which instrument is used to measure altitudes in aircrafts?

(a) Audiometer (b) Ammeter

(c) Altimeter (d) Anemometer

Answer:(c )

32. The absorption of ink by blotting paper involves

(a) capillary action phenomenon

(b) viscosity of ink

(c) siphon action

(d) diffusion of ink through the blotting

Answer:( a)

33. Which law is also called law of inertia ?

(a) Newton’s First Law

(b) Newton’s Second Law

(c) Newton’s Third Law

(d) All the above

Answer:(a )

34. Sudden fall in barometer is indication of

(a) Storm (b) Rain

(c) Tide (d) Clear Weather

Answer:( a)

35. Stainless steel is an alloy of

(a) Iron, Chromium and Nickel

(b) Iron, Chromium and Aluminium

(c) Iron and Nickel

 (d) Chromium and Aluminium

Answer:( a)

36. The power of a lens is measured in :

(a) diopters (b) aeon

(c) lumen  (d) candela

Answer:(a )

37. Albert Einstein was awarded Nobel Prize for his path-breaking research and formulation of the:

(a) Theory of Relativity

(b) Photo-Electric Effect

(c) Principle of Wave-Particle Duality

(d) Theory of Critical Opalescence

Answer:( b)

38. The instrument that measures arterial blood pressure is known as :

(a) Pyknometer            (b) Hypsometer

(c) Sphygmoscope     (d) Sphygmomanometer

Answer:(d )

39. Penicillin which is used as an antibiotic is obtained from

(a) Bacteria (b) Fungi

(c) Algae (d) Lichens

Answer:( b)

40. Pest-resistant cotton commonly known as ‘Bt-Cotton’ is genetically engineered by inserting a gene from a:

 (a) Bacterium (b) Virus

(c) Microalgae (d) Protist

Answer:(a )

41. What is laughing gas?

(a) Carbon dioxide (b) Sulphur dioxide

(c) Nitrous oxide (d) Hydrogen peroxide

Answer:( c)

42. The release of which one of the following into ponds and wells helps in controlling mosquitoes?

(a) Crab  (b) Gambusia Fish

 (c) Snail (d) Dogfish

Answer:(b )

43. Which one of the following is a vector of Kala-Azar disease?

(a) House Fly (b) Aedes Mosquito

 (c) Sand Fly (d) Anopheles Mosquito

Answer:( a)

44. Which one of the following element is essential for the transmission of nerve impulses in nerve fibres?

(a) Calcium (b) Sodium

(c) Zinc (d) Iron

Answer:( b)

45. In human body, the red blood cells are produced in

(a) Liver (b) Muscles

(c) pancreas  (d) Bone Marrow

Answer:( d)

(Continue....)
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PSC GENERAL SCIENCE QUESTIONS AND ANSWERS
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2. General Science  Chemistry
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4. General Science  Zoology
5. General Science Questions and Answers
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