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Chemistry

Chemistry
Limestone is a raw material used by which industry?

Petrochemicals
Cement
Fertilizers
Aluminium

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Chemistry
Which one of the following is used as a sowing agent in the preparation of soft drinks?

Phosphorus acid
Phosphoric acid
Boric acid
Salicylic acid

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Chemistry
24 carat of diamond is equal to

200 mg
91% gold
200 g
95% mg

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Chemistry
PH scale ranges from

0 – 7
None
8 – 14
0 – 14

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Decomposition
Oxidation
Reduction
Dehydration

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Chemistry
Which one of the following organic compounds has fruity smell?

Ester
Ether
Alcohol
Aldehyde

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