1.

Identify the gas evolved in the following reactions when : (i) Sodium propionate is heated with soda lime. (ii) Potassium sulphite is treated with dilute hydrochloric acid. (iii) Sulphur is treated with concentrated nitric acid. (iv) A few crystals of KNO3 are heated in a hard glass test tube. (v) concentrated hydrochloric acid is made to react with manganese dioxide.

Answer»

(i) Ethane 

(ii) Sulphur dioxide 

(iii) Nitrogen dioxide 

(iv) Oxygen 

(v) Chlorine



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