1.

Match the following. ‘A’ ‘B’ (a) Potassium chlorate 1. Catalyst (b) Micro-organisms 2. Nitrogen (c) Greenhouse effect 3. Carbon dioxide (d) Fertilizers 4. Oxygen (e) Manganese dioxide 5. Nitrogen fixation

Answer»

Match the following.






































































‘A’



‘B’



(a)



Potassium chlorate



1.



Catalyst



(b)



Micro-organisms



2.



Nitrogen



(c)



Greenhouse effect



3.



Carbon dioxide



(d)



Fertilizers



4.



Oxygen



(e)



Manganese dioxide



5.



Nitrogen fixation






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