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Question

Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773K to form ammonia gas. This reaction is an example of:

A
Neutralisation reaction
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B
Combination reaction
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C
Double Displacement reaction
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D
Decomposition reaction
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Solution

The correct option is B Combination reaction
Nitrogen(N2) gas combines with hydrogen(H2) gas in the presence of catalyst at 773K to form ammonia (NH3) gas. This is a combination reaction and equation for this can be written as:
N2(g)+3H2(g)catalyst−−−773K2NH3(g)

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