2811: Assertion
The same side of the moon is always seen from the earth.
Reason
The moon rotates on its axis once in each orbital revolution.
(a) both A and R are true but R is not the reason for A
(b) both A and R are true and R is the reason for A
(c) neither A nor R is correct
(d) A is correct but R is wrong
2812: When a man circles round the earth in a satellite, then:
(a) His mass becomes zero but weight remains constant
(b) Mass remains constant but weight becomes zero
(c) Both mass and weight remain constant
(d) Both mass and weight remain zero
2813: How is Gabriel Garcia Marquez well known as ?
(a) Known for research in agriculture
(b) A renowned football coach
(c) A great writer who won the Nobel Prize for literature
(d) Known for research in railway engineering
2814: Which of the following pairs is/are correctly matched?
Theory/Law : Associated Scientist
1. Continental Drift : Edwin Hubble
2. Expansion of Universe : Alfred Wegener
3. Photoelectric Effect : Albert Einstein
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) 3 only
(d) 2 and 3 only
2815: In India, cluster bean (Guar) is traditionally used as a vegetable or animal feed, but recently the cultivation of this has assumed significance.
Which one of the following statements is correct in this context ?
(a) The oil extracted from seeds is used in the manufacture of biodegradable plastics
(b) The gun made from its seeds is used in the extraction of shale gas
(c) The leaf extract of this plant has the properties of anti-histamines
(d) It is a source of high quality biodiesel