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Chemistry

Chemistry
Colloids can be purified by

Condensation
Condensation
Condensation
Dialysis

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Chemistry
PH value between 6.5-7.5 makes the soil

Neutral
Basic
Acidic
None of these

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Chemistry
Which of the following is not a commercial source of energy?

Coal
Petroleum
Firewood
Natural Gas

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Chemistry
Which of the following is used as a lubricant in heavy machines?

Phosphorus
Graphite
Sulphur
Bauxite

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Chemistry
Forth floatation process to concentrate the minerals is applicable to

Bauxite
Chalcopyrites
Calamine
Haematite

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Chemistry
Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants

A B C 2 1 3
A B C3 2 1
A B C 2 3 1
A B C 3 1 2

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