571: 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
572: Consider the following statements:
1. Purchasing Power Parity (PPP) exchange rates are calculated by comparing the prices of the same basket of goods and services in different countries.
2. In terms of PPP dollars, India is the sixth largest economy in the world.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
573: First non-Congress government to come in power in any Indian State is:
(a) DMK in Tamil Nadu
(b) Communist Party of India in Kerala
(c) CPI (M) in West Bengal
(d) None of the above
574: When the Couple Protection Rate is going up
(a) birth rate must necessarily fall
(b) birth rate will fall only if couples are of younger age
(c) death rate must necessarily fall
(d) infant mortality rate must be falling
575: Mixed farming means:
(a) Simultaneous cultivation of a number of crops in a single field
(b) Alternate cropping in a field
(c) Growing fruits and vegetables in the same field
(d) None of these