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Chemistry

Chemistry
Citric acid is present in free form in

Milk
Tamarind
Lemon
Apple

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Chemistry
Quartz is a crystalline form of

Glass
Limestone
Alumina
Silica

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Chemistry
In an oxygen molecule, two atoms are united by

Three bonds
Two bonds
One bond
Four bonds

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Chemistry
The main chemical constituent of clay is

silicon oxide
aluminium borosilicate
aluminium silicate
zeolites

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Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

1
0.01
2
0.05

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Chemistry
PVC is obtained by the polymerisation of

Styrene
Propane
Acetylene
Vinyl chloride

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MORE MCQ ON Chemistry

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