MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Oxides of Sulphur

Which of the ...

Question

Which of the following molecule acts as a bleaching agent?

A

S O_{2}

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

B

C O_{2}

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

C

N O_{2}

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

D

S O_{3}

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

Open in App

Solution

The correct option is B $S O_{2}$
In the presence of moisture, sulphur dioxide acts as a bleaching agent, $S O_{2} + 2 H_{2} O \to H_{2} S O_{4} + 2 [H]$

The nascent hydrogen bleaches vegetable colouring matter to colourless matter.
Colouring matter $+ [H] \to$ Colourless matter.

On exposing the bleached article to air, the reverse process takes place.
Colourless matter $+ [O] \to$ Coloured matter.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion :Both

S O_{2}

S O_{3}

are reducing agents Reason: Both

S O_{2}

S O_{3}

bleach the articles by reduction

Q. Assertion :Both

S O_{2}

S O_{3}

are reducing agents. Reason: Both

S O_{2}

S O_{3}

bleach the articles by oxidation.

In the reaction $P C l_{3} + S O_{3} \to P O C l_{3} + S O_{2}, P C l_{3}$ acts as __ agent.

The rates of diffusion of $S O_{2}, C O_{2}, P C l_{3} a n d S O_{3}$ are in the following order –

Q. How many of the following are mixed anhydrides?

P_{4} O_{10}, C O, S O_{2}, C l O_{2}, C l_{2} O, N_{2} O, N O_{2}, C l_{2} O_{6}, C O_{2}, C l_{2} O_{7}, S O_{3}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Oxides of Sulphur

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Oxides of Sulphur

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon