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Chemistry

Chemistry
In vulcanisation process, rubber can be hardened by adding

Sulphur
Silicon
Alcohol
Nitrogen

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Chemistry
Which of the following in automobile exhaust can cause cancer?

Lead
Oxides of nitrogen
Polyclinic hydrocarbons
Carbon monoxide

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Chemistry
Silica gel is a

Delicious food
Moisturizer
Drying agent
Flavouring agent

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Chemistry
Which of the following is used to remove rust stains on cloth?

Lime
Petrol
Kerosene
Oxalic acid solution

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Chemistry
The degree of dissociation of an electrolyte depends on

Impurities
Method of dissolution
Dilution
Atmospheric pressure

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Chemistry
Which of the following is used as a preservative to protect processed food?

Sodium metabisulphite
BHT
Sodium sulphate
Saccharin

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