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Chemistry

Chemistry
The metal chiefly used for galvanising iron is :

Tin
Mercury
Zinc
Cadmium

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Chemistry
Basicity of boric acid, H3BO3 is

3
4
5
2

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Chemistry
Milk is a

Metal
None of these
Mixture
Element

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Chemistry
Detergents are

None of these
Sodium salts of fatty acids
Sodium salt of benzoic acid
Sodium salts of sulphonic acids

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

Solder
Aluminium powder
None of these
Aluminium sulphate

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Chemistry
Which of the following is not soluble in water ?

Potassium sulphate
Sodium sulphate
Lead Sulphate
Zinc sulphate

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