3121: Who among the following was selected for the 2001 Dada Saheb Phalke Award?
(a) Dev Anand
(b) Lata Mangeshkar
(c) Ramanand Sagar
(d) Yash Chopra
3122: Sun's halo is produced by the refraction of light in
(a) Water vapour, in Stratus clouds
(b) Ice crystals in Cirro-Cumulus clouds
(c) Ice crystals in Cirrus clouds
(d) Dust particles in Stratus clouds
3123: Atoms of the same element having the same atomic number but different atomic weight are called
(a) Isobars
(b) Isotopes
(c) Polymers
(d) Isomers
3124: When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because:
(a) The hole acts as a convex lens
(b) Light takes curvature at the edges of the hole
(c) Of rectilinear propagation of light
(d) The hole acts as a concave lens
3125: The Himalayan Range is very rich in species diversity, Which one among the following is the most appropriate reason for this Phenomenon?
(a) It has a high rainfall that supports luxuriant vegetative growth
(b) It has less human interference
(c) Exotic and invasive species have riot been introduced in this region
(d) It is a confluence of different bio-geographical zones