Q1 of 43 Page 188

Which of the following gases is combustible ?

Dihydrogen gas is combustible. It is very stable and it reacts with air without burning.

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1

Which of the following gases is insoluble in water ?

 1

Which of the following acids is called king of chemicals ?

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Which of the following acts as catalyst in production of ammonia by Haber’s process?

 1

Make the correct pairs from below mentioned (X) and (Y).