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Chemistry

Chemistry
Ultraviolet radiation striking the earth is due to the depletion of

Carbon dioxide
Ozone
Oxygen
Carbon monoxide

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Chemistry
The main component of liquid bleach is:

Sodium chloride
Hydrochloric acid
Sodium hypochlorite
Sodium hypochlorate

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

100
200
50
500

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Chemistry
Which of the following is used as a lubricant in heavy machines?

Bauxite
Sulphur
Graphite
Phosphorus

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Chemistry
Chemical name of bleaching powder is :

Calcium chloro hypochlorite
Calcium hypochlorite
Calcium chlorate
Calcium bi chloride

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Chemistry
The acid present in red ants is

Butyric acid
Formic acid
Acetic acid
Caproic acid

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