Descriptions of some reactions are given...

Descriptions of some reactions are given below. Arrange them in the order of chemical displacement, decomposition, double displacement and chemical combination.
(A) Formation of precipitate.
(B) Liberation of `H_2` gas when metal reacts with acid.
(C) Formation of ammonia from nitrogen and hydrogen.
(D) Liberation of oxygen by heating of potassium nitrate.

BADC

CDAB

CADB

BDAC

Text Solution

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The correct Answer is:

6. Precipitant reactions are double displacement reactions. Reaction of metal with dilute acid is displacement reaction. Formation of ammonia from its constituents is a combination reaction. Heating of potassium nitrate is a decomposition reaction. Therefore, the order is BDAC. Hence, the correct option is (d).

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