2791: Assertion (A) :
In Australia, cattle rearing is done more for meat than for milk.
Reason (R) :
Australians are traditionally non-vegetarians.
(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
2792: Which one of the following is an element?
(a) Ruby
(b) Sapphire
(c) Emerald
(d) Diamond
2793: What explains the eastward flow of the equatorial counter-current?
(a) The Earth's rotation on its axis
(b) Convergence of the two equatorial currents
(c) Difference in salinity of water
(d) Occurrence of the belt of calm near the equator
2794: Consider the following statements :
Hard water is not suitable for
I. drinking.
II. washing cloths with soap.
III. use in boilers.
IV. irrigating crops.
Which of these statements are correct ?
(a) I and III
(b) II and III
(c) I, II and IV
(d) I, II, III and IV
2795: The age of a father is twice that of the elder son. Ten years hence the age of the father will be three times that of the younger son. If the difference of ages of the two sons is 15 years, the age of the father is
(a) 100 years
(b) 70 years
(c) 60 years
(d) 50 years