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Chemistry

Chemistry
The strongest acid of the following is

P-chlorophenol
P-nitrophenol
M-nitrophenol
O-nitrophenol

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Chemistry
Chemical name of common salt is

Sodium Chloride
Sodium Bicarbonate
Sodium Oxide
Sodium

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Chemistry
What is the atomic number of Oxygen

22
5
8
12

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Chemistry
The process of removing calcium and magnesium from hard water is known as

Sedimentation
Flocculation
Water softening
Filtration

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Chemistry
Iron is prevented from rusting by coating with zinc. This process is called as

Sublimation
Reduction
Corrosion
Galvanisation

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Chemistry
Percentage of lead in lead pencils is

80
40
31-66

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MORE MCQ ON Chemistry

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