2936: Biofilms are
(a) colour films used by biologists to photograph living organisms
(b) photomicrographs of microorganisms from various habitats
(c) accumulations of microorganisms at surfaces such as those of a rock, a tooth or an oil droplet
(d) photographic films made through fermentation processes of certain industrial microorganisms
2937: Consider the following statements:
1. India is the only country in the world producing all the five known commercial varieties of Silk.
2. India is the largest producer of sugar in the world.
Which of the following statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2938: Consider the following passage:
In the course of a career on the road spanning almost thirty years, he crossed the breadth of the Eastern hemisphere, visited territories equivalent to about 44 modern countries, and put behind him a total distance of approximately 73,000 miles.
The world's greatest traveller of pre-modern times to whom the above passage refers is
(a) Megasthenes
(b) Fa-Hien
(c) Marco Polo
(d) Ibn Battuta
2939: Which one of the following is the largest (areawise) Lok Sabha constituency?
(a) Ladakh
(b) Kangra
(c) Kachchh
(d) Bhilwara
2940: The conclusion that Asia and Africa had a single landmass is provided by:
(a) The deserts in Asia and Africa
(b) The similarity in climate of certain regions of Asia and Africa
(c) The finding of same type of fossil in both the regions
(d) All of these