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Chemistry

Chemistry
What is the atomic number of mercury

41
80
63
32

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Chemistry
Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher

B, c
D, a
A, b
A, c

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Chemistry
The compound that has the least value for octane number is :

2-methyl heptane
Iso-octane
N-heptane
2,2-dimethyl hexane

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Chemistry
In an oxygen molecule, two atoms are united by

Two bonds
Three bonds
One bond
Four bonds

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Chemistry
Of the following, which one pollutes the air of a big city ?

Cadmium
Lead
Chromium
Copper

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Chemistry
Detergents are

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

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MORE MCQ ON Chemistry

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