1.

About " Ammonia" I. Ammonia is formed by the hydrolysis of urea. II. It is heavier than air. III. It can readily liquefied by at aboutatmospheric pressure. IV. Liquid ammonia resembleswater in its physicalproperties.

Answer»

I, III and IV only
II, I , III and IV
II, I , IV and III
I, II, III and IV

Answer :A::D


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