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Chemistry

Chemistry
Bleaching powder is used in drinking water as a/an

Antiseptic
Coagulant
Disinfectant
Antibiotic

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Chemistry
Milk is a colloidal system in which:

Fat and water are dispersed in each other
Fat is dispersed in water
Fat is dissolved
Water is dispersed in fat

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Chemistry
Which one of the following is most acidic

Na2O
CaO
Al22O3
MgO

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Chemistry
Gelatin is mostly used in making ice–creams in order to

Stabilise mixture
Enrich the aroma
Stabilise the colloid and prevent crystallisation
Prevent making a colloid

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Chemistry
Which one element from below list is liquid at room temperature

Lead
Bromine
Zinc
Argon

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Chemistry
The percentage of Nitrogen in Air is

0.03
85.02
0.94
78.03

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