2806: In how many different ways can four books A, B, C and D be arranged one above another in a vertical order such that the books A and B are never in continuous position?
(a) 9
(b) 12
(c) 18
(d) 14
2807: With reference to the evolution of living organisms, which one of the following sequences is correct?
(a) Salamander - Python - Kangaroo
(b) Octopus - Dolphin - Shark
(c) Pangolin - Tortoise - Hawk
(d) Frog - Crab - Prawn
2808: For artificial insemination the semen of a bull should be stored in:
(a) Cold water
(b) Ice
(c) Liquid nitrogen
(d) Liquid oxygen
2809: In the context of India, which one of the following is the correct relationship between Rights and Duties?
(a) Rights are correlative with Duties.
(b) Rights are personal and hence independent of society and Duties.
(c) Rights, not Duties, are important for the advancement of the personality of the citizen.
(d) Duties, not Rights, are important for the stability of the State.
2810: The tribal population in Andaman and Nicobar Islands belongs to the
(a) Australoid race
(b) Caucasoid race
(c) Mongoloid race
(d) Negroid race