421: A merchant wants a gross profit of 25 per cent on the sales. Thus the percentage he should add to the cost price will be:
(a) 25 per cent
(b) 33 per cent
(c) 66 per cent
(d) 75 per cent
422: Which of the following is cold ocean current?
(a) Labrador
(b) Gulf Stream
(c) Kuro Shio
(d) None of these
423: The name Pahlavi Dynasty in Iran is derived from the:
(a) Language
(b) King
(c) Religion
(d) River
424: Fat is stored in the human body in:
(a) Muscular tissue
(b) Connective tissue
(c) Adipose tissue
(d) Epithelial tissue
425: 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