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Standard XII

Chemistry

Binary Compounds - Hydrides

When a substa...

Question

When a substance 'A' reacts with water, it produces a combustible gas 'B' and a solution of substance 'C' in water. While another substance 'D' reacts with solution of 'C' to produce the same gas 'B' on reaction with dilute $H_{2} S O_{4}$ at room temperature. 'A' imparts a deep golden yellow colour to a smokeless flame on Bunsen burner. Identity 'A', 'B', 'C' and 'D' respectively are:

K, H_{2}, K O H, A l

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N a, H_{2}, N a O H, Z n

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C a C_{2}, C_{2} H_{2}, C a (O H)_{2}, F e

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C a, H_{2}, C a (O H)_{2}, S n

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Solution

The correct option is B $N a, H_{2}, N a O H, Z n$
$N a (A) + H_{2} O \to N a O H + H_{2} (C)$
$Z n (D) + N a O H (C) \to N a_{2} Z n O_{2} + H_{2}$
So A,B,C and are $N a, H_{2}, N a O H, Z n$
Hence option B is correct

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Similar questions

Q. When a substance

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B

and a solution of substance

C

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D

reacts with this solution

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and produces the same gas

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on reaction with dilute

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A

imparts a deep golden yellow colour to smokeless flame.

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The substance A, B, C and D, respectively are:

When a substance

A

reacts with water, it produces a combustible gas

B

and a solution of substance

C

in water.

D

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C

and produces the same gas

B

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imparts a deep golden yellow colour to a smokeless flame.

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Q. The reaction of an element

A

with water produces combustible gas

B

and an aqueous solution of

C

. When another substance

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also produces the same gas even on reaction with dilute

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The correct option is B Na,H2,NaOH,ZnNa(A)+H2O→NaOH+H2(C)Zn(D)+NaOH(C)→Na2ZnO2+H2So A,B,C and are Na,H2,NaOH,ZnHence option B is correct

The correct option is B $N a, H_{2}, N a O H, Z n$
$N a (A) + H_{2} O \to N a O H + H_{2} (C)$
$Z n (D) + N a O H (C) \to N a_{2} Z n O_{2} + H_{2}$
So A,B,C and are $N a, H_{2}, N a O H, Z n$
Hence option B is correct