Question

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 1

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(iv) A few crystals of KNO3 are heated in a hard