Ecz Science gce grade 12 2017 paper 2

Ecz Science gce grade 12 2017 paper 2

1. Methane is a green house gas. Which process releases methane into the air?

A        Combustion of petrol

8      Decay of vegetable   matter

C      Volcanic activity

D       Photosynthesis

2. When the temperature of a chemical reaction is increased, the kinetic energy of particles increases and the…                             .                             .               .

A number of effective collisions increases, remember of effective collisions decreases,

C particles become far apart from each other.

D particle become closer to each other

 

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