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

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

A

Reducing

B

Oxidising

C

Disinfecting

D

None of these

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

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

A

10²

B

10⁵

C

10⁹

D

10¹⁵

The treatment of water with bleaching powder is known as

A

Pre-chlorination

B

Super chlorination

C

De-chlorination

D

Hypo-chlorination

Chlorine acts as a bleaching agent only in the presence of

A

Dry air

B

Pure oxygen

C

Moisture

D

Sunlight

What is the chemical formula of bleaching powder?

A

Ca (OCl)2

B

Ca (OCl)

C

Ca (OCl)3

D

CaCl2

Name the gas used in preparation of bleaching powder

A

Oxygen

B

Hydrogen

C

Nitrogen\

D

Chlorine

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

A

Oxygen

B

Hydrogen

C

Carbon dioxide

D

Chlorine

Bleaching powder is used in drinking water as a/an

A

Disinfectant

B

Antibiotic

C

Antiseptic

D

Coagulant

Chemical name of bleaching powder is :

A

Calcium chlorate

B

Calcium hypochlorite

C

Calcium chloro hypochlorite

D

Calcium bi chloride

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

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