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Solids

SO 2 and CO...

Question

${S O}_{2}$ and ${C O}_{2}$ both turn lime water (A) milky, ${S O}_{2}$ also turns $K_{2} {C r}_{2} O_{7} / H^{+}$ (B) green while $O_{2}$ is soluble in pyrogallol (C) turning it black. These gases are to be detected in order by using these reagents. The order is :

A

(A), (B), (C)

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B

(B), (C), (A)

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C

(B), (A), (C)

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D

(A), (C), (B)

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Solution

The correct option is C (B), (A), (C)
The correct order is (B), (A), (C) or $K_{2} {C r}_{2} O_{7} / H^{+}$ , lime water and pyrogallol.
Only sulphur dioxide solution turns acidified potassium dichromatem green. Carbon dioxide and oxygen do not interfere in this. Among oxygen and carbon dioxide, only carbon dioxide turns lime wate milky. Oxygen does not interfere in this reaction.

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Similar questions

S O_{2}

C O_{2}

both turn lime water

(A)

milky coloured,

S O_{2}

K_{2} C r_{2} O_{7} / H^{+} (B)

O_{2}

is soluble in pyrogallol

(C)

turning it black. These gases are to be detected in order by using these reagents. The correct order is :

S O_{2}

C O_{2}

both turn lime water milky.

S O_{2}

K_{2} C r_{2} O_{7} / H^{+}

O_{2}

is soluble in pyrogallol turning it black.

These gases are to be detected in order by using these reagents. The order is :

S O_{2}

C O_{2}

both turns lime water milky. Which of the following reagent can be used to distinguish these two gases?
(I)

K_{2} C r_{2} O_{7} / H_{2} S O_{4}

K M n O_{4}

I_{2} S o l u t i o n

C O_{2}

S O_{2}

both turns lime water milky. How will you detect the presence if both are present in a mixture?

S O_{2}

turns acidified

K_{2} {C r}_{2} O_{7}

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