GENERAL SCIENCE (GENERAL STUDIES) Part-4

Total Questions: 54

31. Animal protein is called first class protein because it is

Correct Answer: (c) rich in essential amino acids

32. It is easy to burst a gas filled balloon with a needle than with a nail. It is because

Correct Answer: (b) needle exerts more pressure than nail on the balloon

33. The velocity of sound in moist air is more than in dry air because the moist air has

Correct Answer: (c) more density than dry air

34. X–rays can be used

Correct Answer: (b) to detect defects in precious stones and diamonds.

35. Ice is packed in saw dust because

Correct Answer: (a) saw dust is poor conductor of heat.

36. What happens when a drop of glycerol is added to crushed KMnO₄ spread of a paper ?

Correct Answer: (a) There is a violent explosion

37. Most commonly used bleaching agent is

Correct Answer: (c) Chlorine

38. The least penetrating power ray is

Correct Answer: (a) α–Ray  

39. Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen ?

Correct Answer: (a) Water

40. The maximum fixation of solar energy is done by

Correct Answer: (c) Green plants