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Identify Bleaching Powder among the given Samples of Chemicals
Identify Bleaching Powder among the given Samples of Chemicals
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1)
Bleaching powder is an example of________________
Mixed salt
Normal salt
Complex
Double salt
2)
Which one of the following is extensively used for sterilizing water?
Alum
Bleaching powder
Borax powder
Soda powder
3)
Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________
Calcium perchlorate
None of these
Slaked lime
Soda lime
4)
Chlorine is a bleaching agent, and the bleaching action is cause by
reduction
chlorination
hydrogenation
oxidation
5)
Which of the following is produced on the reaction of bleaching powder with a few drops of conc. HCl?
Calcium oxide
Hypochlorous acid
Chlorine
Oxygen
6)
Chlorine gas reacts with _______ to form bleaching powder.
dry CaO
dil. solution of Ca(OH)2
dry slaked lime
conc. solution of Ca(OH)2
7)
At what PH , Chlorine in water acts as only hypochlorite ions?
<5
>10
>3
<3
8)
The hypochlorous acid is ……….times effective as hypochorite ions
10
80
50
20
9)
Bleaching powder contains ………of available chlorine.
16%
33.33%
66.66%
100%
10)
Which of the following is treated with chlorine to obtain bleaching powder?
Ca(OH)2
CaSO4
KOH
Mg(OH)2