2041: Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?
(a) Isolation
(b) Mutation
(c) Natural Selection
(d) Sexual Reproduction
2042: Recently, which of the following States has explored the possibility of constructing an artificial inland port to be connected to sea by a long navigational channel?
(a) Andhra Pradesh
(b) Chhattisgarh
(c) Karnataka
(d) Rajasthan
2043: Lathyrism is caused by excessive consumption of
(a) Kesari dal
(b) Mustard oil
(c) Polished rice
(d) Mushrooms
2044: Among the four pairs given below which one consists of a correct combination of dignitaries who became Vice-Presidents after having held diplomatic posts like Ambassadors and High Commissioners?
(a) Dr. S. Radhakrishnan and G.S. Pathak
(b) Dr. S. Radhakrishnan and V.V. Giri
(c) Dr. Zakir Hussain and K.R. Narayanan
(d) B.D. Jatti and K.R. Narayanan
2045: Assertion (A):
During the time of Akbar, for every ten cavalrymen, the mansabdars had to maintain twenty horses.
Reason (R):
Horses had to be rested while on march and replacements were necessary in times of war.
(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