4556: 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
4557: A wooden block is floating in water. If 4/5 of its volume is immersed in water and volume of the water displaced is 800 ml, the volume of the block is
(a) 1140 ml
(b) 200 ml
(c) 800 ml
(d) 1000 ml
4558: India enacted The Geographical Indications of Goods (Registration and Protection) Act, 1999 in order to comply with the obligations to
(a) ILO
(b) IMF
(c) UNCTAD
(d) WTO
4559: Nobel Prize winning scientist James D. Watson is known for his work in which area ?
(a) Metallurgy
(b) Genetics
(c) Environmental protection
(d) Meteorology
4560: Which one of the following is the continent with the highest mean elevation in the world ?
(a) Antarctica
(b) North America
(c) Asia
(d) South America