931: Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die?
(a) Edwin Hubble
(b) S. Chandrashekhar
(c) Steven Weinberg
(d) Stephen Hawking
932: In which one among the following categories of protected areas in India are local people not allowed to collect and use the biomass?
(a) Biosphere Reserves
(b) National Parks
(c) Wetlands declared under Ramsar Convention
(d) Wildlife Sanctuaries
933: When compared to the mammals, birds are less sensitive to temporary deprivation of water, because:
(a) The water requirement per unit weight is less in birds than in mammals.
(b) Absorption of water from the gut is more efficient in birds than in mammals.
(c) Urea excretion in mammals entails a greater loss of water than that in birds.
(d) None of these
934: The Seasonal reversal of winds is the typical characteristic of
(a) Equatorial climate
(b) Mediterranean climate
(c) Monsoon climate
(d) All of the above climates
935: The dimensions of a rectangle are 51 m and 49 m respectively while side of a square is 50 m. Which of the following statements is correct?
(a) Diagonals of the square and the rectangle are equal
(b) Diagonals of both the geometrical figures intersect at right angles
(c) The perimeters of both the geometrical figures are equal
(d) Both the geometrical figures are of the same area