1. During collision of two objects,

(a) Total Linear momentum is conserved at each instance of collision.
(b) Total Linear momentum is conserved in the few initial collisions.
(c) Total Linear momentum is conserved, in the last few collisions.
(d) Total Kinetic energy is conserved at each instance of collision.

2. A monkey is sitting on a tree at a distance. The shooter takes an aim. When the shooter fires, the monkey also falls at the same time. The bullet still hits the falling monkey. The phenomenon of monkey still being hit despite from the tree is explained by:

(a) Simple Harmonic Motion
(b) oscillatory Motion
(c) Projectile Motion
(d) Brownian Motion

3. The concept of carbon credit develops from which one of the following conventions?

(a) Earth summit-rio-de senen's
(b) Kyoto protocol
(c) Montreal protocol
(d) G-8 Summit Paris

4. Biodiesel is a low pollution fuel and we get this fuel from some ways. Consider the statement given below:

1. Lipid from plant and alse.
2. Hydro carbon from plants alse
3. Fatty acids from dead animals
4. Hydrocarbons from toxic bacteria

Select the correct using codes below:

(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) All the above

5. Bio ethanol is the most important fuel in all Biofuels. Consider some reason behind it:

1. Octane numbers of ethanol are more than petrol.
2. Motor engine pre-combustion does not happen by ethanol fuels.
3. Ethanol fuel wastes are most toxic in nature.

Select a correct codes given below:

(a) Only 1
(b) Only 3
(c) Both 1 and 2
(d) 1, 2 and 3

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ANS:1(a), 2(c), 3(d), 4(d), 5(b)