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Chemistry

Chemistry
Main source of lead pollution is from

Tobacco
Leaded gasoline
Sewage
Insecticides

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Chemistry
Helium gas is filled in ballons because

It is lighter than air
It is a noble gas
Its atomic number is 2
It is one of the constitutents of water

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Chemistry
Which of the following is the strongest base in aqueous solution ?

Diethylamine
Triethylamine
Ethylamine
Ammonia

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Chemistry
The electronic configuration of an atom having atomic number ‘20’ is

2, 8, 10
2, 10, 8
2, 8, 8, 2
2, 6, 8, 4

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Chemistry
Which type of fire extinguisher is used for petroleum fire ?

Powder type
Foam type
None of these
Soda acid type

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Chemistry
Heavy metal pollution of water is caused by:

Acid Plants
Wood burning
Domestic sewage
Paints

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MORE MCQ ON Chemistry

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