36: The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?
(a) Ice is a bad conductor of heat
(b) Since the surface of the lake is at the same temperature as the air, no heat is lost
(c) The density of water is maximum at 4 degree celcius
(d) None of the statements (a), (b) and (c) given above is correct.
37: "Lathyrism" is a crippling disease caused by:
(a) Tinned fish
(b) Chick pea and pulses
(c) Meat
(d) Adulterated oil
38: With reference to the evolution of living organisms, which one of the following sequences is correct?
(a) Salamander - Python - Kangaroo
(b) Octopus - Dolphin - Shark
(c) Pangolin - Tortoise - Hawk
(d) Frog - Crab - Prawn
39: How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
(a) 183 x 106 nanometres
(b) 183 x 107 nanometres
(c) 234 x 106 nanometres
(d) 234 x 107 nanometres
40: The Chishti saint, in whose honour "Urs" is held in Ajmer every year, was
(a) Nizamuddin Auliya
(b) Moin-ud-din
(c) Nasiruddin Chiragh-i-Delhi
(d) Hamidud-Din Nagori