Question

statement given below are incorrect . write the correct statements : 1. the product of the combustion of a fuel are nitrogen and water vapour. 2.coal is a household fuel. 3. LPG is an incombustible gas kept in home to extinguish fire. 4. water turns blue coloured anhydrous copper sulphate to colourless substance. 5. oxygen is not necessary for the respiration of plant

Answer 1

1.the product of the combustion of a fuel are nitrogen and carbon dioxide.
2.No
3.No
4.No
5.No

Answer 2

1.the product of combustion Is CO2 and heat .
2.coal is a industrial fuel.
3.LPG is a combustible liquid used for cooking purposes.
4.iron turns anhydrous CuSO4 from blue to colourless.
5.oxygen is necessary for the respiration of plants.


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- Maheshwaran.