Related Questions

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

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