1. Beufort scale is used to measure the intensity of:

(a) Earth quakes (b) Wind

(c) Tsunami (d) Volcanic eruption

2. The study of motion:

(a) Accoustics (b) Cryogenics

(c) Optics (d) Dynamics

3. The frequency of electricity used for domestic purpose:

(a) 100 Hz (b) 230 Hz

(c) 50 Hz (d) 250Hz

4. Which is added to petrol in cold countries to avoid freezing?

(a) Ethylene Glycol (b) Tetra Ethyl Lead

(c) Ethyl Mercapton (d) Benzene

5. Sodium Citrate is used as a ........:

(a) Fuel (b) Explosive

(c) Food preservative (d) Pigment

ANSWERS: 1 (b) 2(d) 3 (c) 4 (a) 5(c)