21000+ Important MCQs for UPSC

51) Liraglutide has recently been approved as a drug, it has been developed to treat

52) A circular loop of wire is rotated at constant angular speed about an axis that makes an angle q with a constant magnetic field as shown in figure. The emf induced in the coil will be zero at all times if

53) Pepsin requires acidic medium for its optimal enzymatic activity. The cells of the gastric glands that secrete HCl are:
1.goblet cells
2.parietal cells
3.chief cells
4.oxyntic cells

54) When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because

55) Acid and alcohol react to form

56) A medicinal substance given against the intake of poisons or to prevent a disease from having an effect is known as

57) The compounds responsible for causing 'socks' to stink are
1.Butyric acid
2.Dimethyl sulphide
3.2-Heptanone
4.2-Nonanone
5. 2-Octanone Which compound(s) is/are present in the 'socks stink'?

58) The most malleable metal is

59) An energy source will supply a constant current into the load if its internal resistance is

60) Consider the following statements:
1.The apparent weight of a body floating in a liquid is zero.
2.The weight of the liquid displaced by the immersed part of the body equals its weight. 
Which of the above statements is/are true?