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Chemistry

Chemistry
Which one out of the following helps in burning ?

Nitrogen
Oxygen
Carbon dioxide
Carbon monoxide

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Chemistry
Which of the following is the maximum number of electrons that can be present in M-shell?

32
18
2
8

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Chemistry
The advantage of detergents over soaps is

Detergents are soluble in water
Detergents give lather even with hard water
Detergents could not give much lather
Soaps give lather with only soft water

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Chemistry
PH scale ranges from

0 – 14
0 – 7
None
8 – 14

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Chemistry
For generation of biogas, the materials commonly used are

Animal wastes
Crop residues
Aquatic plants
Forest residues

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Chemistry
The important ore of aluminium is

Haematite
Cryolite
Bauxite
Fluorspar

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MORE MCQ ON Chemistry

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