Q1. A jet engine works on the principle of conservation of –
Q2. The pseudopodia of amoeba are used for-
(a)Movement & capture of food
(c)Capturing the food only
(c) no mass and no charge
Q5. Neutron was discovered by-
Q6.Rise in water level in ocean is due to-
(a)Melting of ice in polar region
Q7. Why electric iron uses wires of alloy?
(a) they do not oxidise at high temperatures
(b) they do not burn at high temperatures
Q8. For which one of the following is the example of capillarity action?
(b) Spread a water drop on a cotton cloth
(c) Rising of underground water
Q9.Which is the absolute temperature scale?
Q10.Noise or noise pollution is measured in-