Describe the laboratory method of preparation of hydrogen gas.

Describe the laboratory method of preperation of ammonia .

The laboratory method of preparation of CO is

Describe laboratory method for preparation of glucose . Write the reaction that indicates the presence of - CHO group in glucose .

In the laboratory method of preparation of dioxygen by thermal decomposition of potassium chlorate the catalyst used is

(a) Write the laboratory method for the preparation of HNO_(3) . (b) Write the structure of three oxoacids of phosphorus.

Give reason for the following: Zinc granules are preferred for the laboratory preparation of hydrogen rather than pure zinc.