566: Why camphor disappears when kept on a plate?
(a) It sublimes
(b) It reacts with the metal of the container
(c) It reacts with the gases of the air
(d) None of the above
567: Where was the selection of suitable candidates for a particular job first started through competitive examinations?
(a) China
(b) Great Britain
(c) U.S.A.
(d) Germany
568: The complete conversion of glucose In the presence of oxygen into carbon dioxide and water with release of energy is called
(a) aerobic respiration
(b) anaerobic respiration
(c) glycolysis
(d) hydrolysis
569: Which Article of the Constitution of India says, "No child below the age of fourteen years shall be employed to work in any factory or mine or engaged in any other hazardous employment"?
(a) Article 24
(b) Article 45
(c) Article 330
(d) Article 368
570: The blood glucose level is commonly expressed as
(a) mm of Hg
(b) milligram per decilitre
(c) parts per million
(d) grams per litre