2046: The escape velocity from the earth's surface is about:
(a) 30 km/sec
(b) 6 km/sec
(c) 11.2 km/sec
(d) 300 km/sec
2047: On another planet, the local terminology for earth, water, light, air and sky, are sky, light, air, water and earth respectively. If someone is thirsty there, what would he drink ?
(a) Sky
(b) Water
(c) Air
(d) Light
2048: Antigen is a substance which
(a) destroys harmful bacteria
(b) is used to treat poisoning
(c) lowers body-temperature
(d) stimulates formation of antibody
2049: In which of the following shapes can a 1 kg plastic sheet be moulded so as to have minimum surface area?
(a) Cylindrical
(b) Spherical
(c) Conical
(d) Cubical
2050: Persons below the poverty line in India are classified as such based on whether
(a) they are entitled to a minimum prescribed food basket
(b) they get work for a prescribed minimum number of days in a year
(c) they belong to agricultural labourer household and the scheduled caste/tribe social group
(d) their daily wages fall below the prescribed minimum wages