76: Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
(a) Indian Ocean is half an ocean
(b) Indian Ocean has monsoon drift
(c) Indian Ocean is a land-locked ocean
(d) Indian Ocean has greater variation in salinity
77: Which one of the following hormones contains iodine ?
(a) Thyroxine
(b) Testosterone
(c) Insulin
(d) Adrenaline
78: In the latter half of the year 2006, in which one of the following countries did a military coup take place?
(A) Thailand
(B) Vietnam
(C) Cambodia
(D) Laos
79: Which one of the following is not a digestive enzyme in the human systems?
(a) Trypsin
(b) Gastrin
(c) Yellow and violet
(d) Indigo and yellow
80: Assertion (A) :
To dilute sulphuric acid, acid is added to water and not water to acid.
Reason (R) :
Specific heat of water is quite large.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true