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Chemistry

Chemistry
Commercial Vaseline is derived from

Petroleum
Wool wax
Plant gums
Coal tar

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Chemistry
The structure of NaCl crystal is

Body centered cubic
Square planar
Face centered cubic
Octahedral

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Chemistry
Which colour is produce by Arsenic during flame test

Green
Red
Crimson
Blue

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Chemistry
The minimum energy required for an effective collision is

Activation energy
Free energy
Internal energy
Threshold energy

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

Boric acid
Phosphoric acid
Salicylic acid
Phosphorus acid

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Chemistry
In drinking water supply, which of the following treatments is not involved

Coagulation
Softening
Disinfection
Sedimentation

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