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Chemistry

Chemistry
The octane number of zero is assigned to

n-heptane
iso-octane
3-methyl octane
2-methyl octane

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Chemistry
Which of these acids is not organic in origin?

Sulphuric acid
Lactic acid
Citric acid
Oxalic acid

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Chemistry
Colloids can be purified by

Condensation
Condensation
Dialysis
Condensation

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Chemistry
The filter over which sewage is sprinkled is called as

Trickling filter
Contact bed
Percolating filter
Intermittent sand filter

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Chemistry
Which one of the following vegetable oils is used in the manufacture of paints?

Palm oil
Linseed oil
Cottonseed oil
Sunflower oil

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Chemistry
Which of the following is used in making smoke bombs?

Phosphorus
Sulphur
Hydrogen
Carbon

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