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Chemistry

Chemistry
Sulphur dioxide bleaches colouring matter by :

Dehydration
Reduction
Decomposition
Oxidation

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Chemistry
The acid present in red ants is

Butyric acid
Acetic acid
Formic acid
Caproic acid

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Chemistry
Hard water and soft water can be distinguished by using

Ordinary soap
Dilute acid
Liquid soap
Detergent

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Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Acetylene
Methyl alcohol
Methane
Ethyl formate

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Chemistry
Percentage of lead in lead pencils is

31-66
80
40

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Chemistry
Catalytic converters are generally made from :

Alkaline metals
Transition metals
Carbon
Hydrogen

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MORE MCQ ON Chemistry

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