Ammonia _____. is the major nitrogenous waste excreted by insects is soluble in water is metabolically more expensive to synthesize than urea has low toxicity relative to urea.

Ammonia is a colourless ,pungent gas composed of nitrogen and hydrogen. It is the simplest stable compound of these elements and serves as a starting material for the production of many commercially important nitrogen compounds .

Uses of ammonia :

1) the major use of ammonia is as fertilizer .

2) In textile industry, ammonia is used in the manufacture of synthetic fibers, such as nylon and rayon .

3) It is employed in the dyeing and scouring of cotton, wool and silk .

4) Ammonia serves as a catalyst in the production of some synthetic resins .

5) It neutralizes the acidic by -product of petroleum refining .

6) In the rubber industry ,it prevents coagulation of raw latex during transportation from plantation to factory .

7) Ammonia is used in various metallurgical processes ,including the nitriding of alloy sheets to harden their surfaces .

Hence , ammonia is soluble in water .

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Question : Ammonia is ________ .

A) is the major nitrogenous waste excreted by insects .

B) is soluble in water .

C) is metabolically more expensive than urea .

D) has low toxicity related to urea .