Question

State the precaution that must be taken in carrying out an experiment with hydrogen ​

Answer 1

The generation and use of hydrogen is dangerous. Mixtures of hydrogen and air can be highly explosive. Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.

The first few bubbles of hydrogen gas should not be collected since they contain air mixed with the gas. Air mixed with hydrogen forms an explosive mixture.

A flame should not be brought near the apparatus since hydrogen is inflammable.

Answer 2

Precautions must be taken to remove all possibilities of fire or explosion.

Step-by-step explanation:

Since Hydrogen is a very flamable or combustible gas, it is neccesary to avoid smoking, remove sourcs of sparks, flames or heat and hydrogen should be used in a well ventilated area.