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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________________.
Normal salt
Mixed salt
Complex
Double salt
2)
Which one of the following is extensively used for sterilizing water?
Bleaching powder
Soda powder
Alum
Borax powder
3)
What is the pH of a solution formed by mixing bleaching powder with water?
Acidic
Alkaline
No change in pH
Neutral
4)
Chlorine functions as a bleaching agent, and the bleaching action is induced by _______.
Oxidation
Reduction
Chlorination
Hydrogenation
5)
Which of the following is produced on the reaction of bleaching powder with a few drops of conc. HCl?
Oxygen
Chlorine
Hypochlorous acid
Calcium oxide
6)
Which metal is present in the composition of bleaching powder?
Sodium
Potassium
Magnesium
Calcium
7)
At what PH , Chlorine in water acts as only hypochlorite ions?
<5
<3
>3
>10
8)
The hypochlorous acid is ……….times effective as hypochorite ions.
80
10
50
20
9)
Bleaching powder contains ………of available chlorine.
33.33%
16%
100%
66.66%
10)
Which of the following is treated with chlorine to obtain bleaching powder?
CaSO₄
KOH
Ca(OH)₂
Mg(OH)₂