Choose the correct synonym of the word - Verbose

Identify the metal which is nontoxic in nature.

The chiefsource for the production of nitrogeneous fertilizers is : 

“Firefighting clothes” are made from

When Hydrogen starts burning in air it produces?

Which of the inert gases can form compounds?

The function of skimming tank in sewage treatment is to remove 

One property of ammonia is 

Spirit in contact with body gives cool sensation because it is:

Black lung disease occurs in people working in 

The mass number of a nucleus is