511: Who is the first Indian to win the grand-master's title ?
(a) D. V. Prasad
(b) S. V. Natarajan
(c) Vishwanathan Anand
(d) Ravi Kumar
512: During the Mughal period, under the Zabti system, land revenue was assessed and was required to be paid
(a) In cash or kind.
(b) Only in cash.
(c) Only in kind.
(d) By the zamindar on behalf of the peasants
513: Assertion (A) :
Human diet should compulsorily contain Glycrine, Serine and Tyrosin.
Reason (R) :
Essential amino acids cannot be synthesized in the human body.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually 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
514: What is the difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is / are correct?
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
515: The Millennium Ecosystem Assessment describes the following major categories of ecosystem services-provisioning, supporting, regulating, preserving and cultural. Which one of the following is supporting service?
(a) Production of food and water
(b) Control of climate and disease
(c) Nutrient cycling and crop pollination
(d) Maintenance of diversity