Suresh took some sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube as shown in a figure. When he brought a wet litmus paper near the test tube then he observed:

no effect on litmus paper

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blue litmus turns red

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red litmus turns blue

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unpredictable

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Solution

The correct option is B blue litmus turns red
Reaction:
$S + O_{2} \to S O_{2} H_{2} O - - \to H_{2} S O_{3}$
Sulphurous acid
Here acid forms, which turns blue litmus red.

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Similar questions

Q. Suresh took some sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube as shown in figure. When he brought a wet litmus paper near the test tube, then, he observed:

Question 9 (a)

Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below:

What will be the action of gas on:

(i) dry litmus paper?

(ii) moist litmus paper?

Q. Sameer took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it. What will be the action of gas evolved on dry litmus paper?

Q. Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in the figure.
What will be the action of gas on dry litmus paper?

Q. Sameer took suphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it. What will be the action of gas on moist litmus paper?

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Suresh took some sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube as shown in a figure. When he brought a wet litmus paper near the test tube then he observed:

The correct option is B blue litmus turns redReaction:S+O2→SO2H2O−−→H2SO3 Sulphurous acidHere acid forms, which turns blue litmus red.

The correct option is B blue litmus turns red
Reaction:
$S + O_{2} \to S O_{2} H_{2} O - - \to H_{2} S O_{3}$
Sulphurous acid
Here acid forms, which turns blue litmus red.