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When a substance A reacts with water, it...

When a substance A reacts with water, it produces a combustible gas B and a solution of substance C in water. D reacts with this solution of C and produces the same gas B on warming. D can also produce gas B on reaction with dilute `H_2SO_4`. A imparts a deep golden yellow colour to smokeless flame. A, B, C and D respectively are

A

`Na,H_2, NaOH, Zn`

B

`k,H_2, KOH, Al`

C

`Ca,H_2, Ca(OH)_2, Sn`

D

`CaC_2, C_2H_2, Ca(OH)_2, Fe`

Text Solution

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The correct Answer is:
B
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