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Chemistry 88

Chemistry 88

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Quiz Questions And Answers

Which one of the following is not an element?

Nitrogen
Silica
Oxygen
Hydrogen

Vinegar is an aqueous solution of

Acetic acid
Citric acid
Hydrochloric acid
Oxalic acid

The percentage of oxygen present in human body is

18%
53%
65%
84%

Liquids always seek their own

Density
Shape
Pressure
Level

German silver is a mixture of

Copper, nickel and zinc
Copper and tin
Copper and zinc
Aluminium, copper and traces of Mg and Mn

Hardness of water is due to the presence of soluble salts in

Sodium and Calcium
Sodium and Magnesium
Sodium and Lead
Calcium and Magnesium

One of the constituent of optical glass is

Borax
Red lead
Alumina
Lead oxide

Candles contains a mixture of

paraffin wax and stearic acid
bees wax and paraffin wax
higher fatty acid
bees wax and stearic acid

The plant cell will shrink when placed in

An isotonic solution
Hypertonic solution
Hypotonic solution
Water

The purest form of iron is

steel
pig iron
cast iron
wrought iron
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