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Chemistry

Chemistry
The strongest acid of the following is

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

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Chemistry
Which of the following metals form an amalgam with other metals ?

Zinc
Lead
Tin
Mercury

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Argon
Hydrogen
Helium
Nitrogen

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Chemistry
When cathode rays strike a target of high atomic weight, they give rise to

? and ? rays
?-rays
X-rays
Positive rays

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Chemistry
The chemical name of rat poison is

Potassium cyanide
Lead nitrate
Zinc oxide
Zinc phosphide

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Chemistry
Diamond is harder than graphite because of :

None of these
Tetrahedral structure of diamond
Difference in layers of atoms
Difference of crystalline structures

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