31 .A soap buble is given negative charge then its radius
32 .The pressure exerted on the walls of the container by a gas is due to the fact that the gas molecules
33 .Which of the following is used by dentis to see the image of teech of a patient?
34 .The unit of electrical power is
35 .Velocity of light is maximum is
36 .What is the primary source of food for marine life?
37 .Air pollution by 'Fly ash' is caused by:
38 .Which one of the following is not a site for in - situ method of conservation of flora?
39 .Which one among the following is not responsible for 'green house effect'?
40 .Which are the relevant waves in telecommunication?
41 .For television broadcasting the frequency employed is normally
42 .The image formed on the retine of a human eye is
43 .Woollen clothes keep the body warm because
44 .The main pollutant responsible for Bhopal Gas Tragedy is:
45 .The nature of sun's spectrum is