Sudha took a small amount of sulphur in deflagrating spoon and heated it over a burner. As soon as it started burning she put it in a gas jar and covered with a lid. After sulphur stopped burning she added a small amount of water in it and dissolved the gas in water by shaking it. She then tested the solution with red and blue litmus paper. What did she observe?

In the solution, the blue litmus paper turned red.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

In the solution, the red litmus paper turned blue.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

There was no change in the colour of litmus paper.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Blue litmus paper turned red and red litmus paper turned blue.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A In the solution, the blue litmus paper turned red.
$S + O_{2} \to S O_{2}$
$S O_{2} + H_{2} O \to H_{2} S O_{3}$
$H_{2} S O_{3}$ is an acid.
Acid turns blue litmus to red litmus.

Suggest Corrections

Similar questions

Dry ammonia gas has no action on litmus paper but a solution of ammonia in water turns red litmus paper blue.
Why is it so ?

Q. In litmus paper test

H C l

gas turns moist litmus paper from blue to red as it is acidic in nature.

Q. Dry ammonia has no action on litmus paper but a solution of ammonia in water turns red litmus paper blue. Why is it so?

Q. What do we observe on pouring acetic acid on red blue litmus papers ?
(a) Red litmus remains red and blue litmus turns red.
(b) Red litmus turns blue and blue litmus remains blue.
(c) Red litmus turns blue and blue litmus turns red.
(d) Red litmus becomes colourless and blue litmus remains blue.

When a red litmus paper is dipped in the aqueous solution of $X$ there is no change in colour.
When a blue litmus paper is dipped in the same solution it turns red.
Which among the following options can be the chemical $X$ ?

Join BYJU'S Learning Program

The correct option is A In the solution, the blue litmus paper turned red.S+O2→SO2SO2+H2O→H2SO3H2SO3 is an acid.Acid turns blue litmus to red litmus.

The correct option is A In the solution, the blue litmus paper turned red.
$S + O_{2} \to S O_{2}$
$S O_{2} + H_{2} O \to H_{2} S O_{3}$
$H_{2} S O_{3}$ is an acid.
Acid turns blue litmus to red litmus.