916: Which one of the following is caused by the expression of a recessive gene present on sex chromosome ?
(a) Rheumatism
(b) Nervous shock
(c) Muscular dystrophy
(d) Cerebral hemorrhage
917: Water which contains soluble salts of calcium and magnesium is known as
(a) Heavy water
(b) Soft water
(c) Hard water
(d) Mineral water
918: Antigen is a substance which
(a) lowers body temperature
(b) destroys harmful bacteria
(c) triggers the immune system
(d) is used as an antidote to poison
919: Which one of the following ancient Indian records is the earliest royal order to preserve food grains to be utilised during the crises in the country ?
(a) Sohagaura Copper-plate
(b) Rummindei pillar-edict of Asoka
(c) Prayaga-Prasasti
(d) Mehrauli Pillar inscription of Chandra
920: Which one of the following can one come across if one travels through the Strait of Malacca ?
(a) Java
(b) Singapore
(c) Bali
(d) Brunei