Oxygen helps in (a)  

(1 answer only)

(a)   helps in photosynthesis.

Name the gas.

Which process DOES NOT produce carbon dioxide?

(a)  

Too much carbon dioxide in the atmosphere causes (a)  

(Any 1 suitable answer)

State ONE WAY to prevent fire at home.

State 3 conditions required for combustion.

(....,....,....)

(a)  

Sulphur dioxide and nitrogen dioxide can cause (a)  

State the gas that causes thinning of ozone layer.

(a)  

One way to prevent air pollution is...

Name ONE POLLUTANT released by the exhaust smoke of the motor vehicles and ONE WAY TO CONTROL the pollution caused by the pollutant.

Alex wants to put out the fire in his kitchen. What are the ingredients that he can use to stop the fire?

(...,...)

(a)  

What is the effect of deforestation (cutting down of trees)?

(One answer)

State the fire extinguisher that can be used to put out all types of fire.

(a)