Which gas is released when water is added to bleaching powder?

Bleaching action of bleaching powder is due to its __________ properties.

A

Reducing

B

Oxidising

C

Disinfecting

D

None of these

Name the gas used in preparation of bleaching powder

A

Oxygen

B

Hydrogen

C

Nitrogen\

D

Chlorine

The treatment of water with bleaching powder is known as

A

Pre-chlorination

B

Super chlorination

C

De-chlorination

D

Hypo-chlorination

Bleaching powder is used in drinking water as a/an

A

Disinfectant

B

Antibiotic

C

Antiseptic

D

Coagulant

Which one of the following is not true for bleaching powder?

A

It is used as a reducing agent in chemical industries

B

It is used for bleaching wood pulp in paper factories

C

It is used for disinfecting drinking water

D

It is used for bleaching linen in textile industry

What is the chemical formula of bleaching powder?

A

Ca (OCl)2

B

Ca (OCl)

C

Ca (OCl)3

D

CaCl2

The percentage of chlorine in fresh bleaching powder is about

A

10 to 15

B

20 to 25

C

30 to 35

D

40 to 50

Chemical name of bleaching powder is :

A

Calcium chlorate

B

Calcium hypochlorite

C

Calcium chloro hypochlorite

D

Calcium bi chloride

Bleaching powder is prepared by passing :

A

Chlorine over slaked lime

B

Oxygen over slaked lime

C

Carbon dioxide over slaked lime

D

Chlorine over quick lirne

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

A

Slaked lime

B

Soda lime

C

Calcium perchlorate

D

None of these

Which gas is released when water is added to bleaching powder?

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