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Chemistry

Chemistry
Chemical formula of washing soda is

Na2SO4.10H2O
Ca(OH)2
Na2CO3.10H2O
NaHCO3

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Chemistry
The main component of liquid bleach is:

Sodium chloride
Sodium hypochlorate
Hydrochloric acid
Sodium hypochlorite

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Chemistry
The function of skimming tank in sewage treatment is to remove

Inorganic substances
Oil and fatty substances
Gritty substances
Suspended solids

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Chemistry
A pungent smell often present near the urinals is due to

Urea
Ammonia
Chlorine
Sulphur-di- oxide

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Chemistry
The first metal used by man was

iron
bronze
gold
copper

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Chemistry
Ethylene is a ________ molecule.

Polar
Ionic
Nonpolar
Covalent

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MORE MCQ ON Chemistry

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