State three precautions taken in preparing hydrogen.

The following questions pertain to the laboratory prepration of hydrogen chloride. Gas : Write the equation for its preparation ,menfioning the condition required . Name the drying agent used in the above preparation and give a reason for the choice. (iii State a safety precaution taken during the preparation of hydrochloric acid .

What are the precautions taken to prepare a temporary mount of a leaf peel to show its stomata?

In the laboratory preparation of nitric acid from -KNO_(3) or NaNO_(3) state (i) the acid used (ii) the type of apparatus used (iii) the precautions to be taken during the preparation (iv) the method of collection of the acid (v) the method of identification of the product i.e acid fromed.

Give the equation for the lab preparation of hydrogen.

What are the precautions to be taken against dust allergy?

State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.

List any five precautions to be taken while performing an experiment in a chemistry laboratory.

............ acid is a strong oxidizing agent and so it is not used in preparation of hydrogen.

Describe the important processes used for the preparation of hydrogen peroxide. How is a dilute solution of hydrogen peroxide concentrated and what precautions are taken to store it ?

Why sulphuric acid is not used as a drying agent in the preparation of hydrogen ?