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Chemistry

Chemistry
The strongest acid of the following is

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

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Chemistry
The octane number of zero is assigned to

2-methyl octane
iso-octane
3-methyl octane
n-heptane

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Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Rutherford
Hund
Sommerfeld
Thomson

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Chemistry
The reaction intermediate formed during the preparation of diethylether from ethanol by treatment with H2SO4 is

Carbanion
Free radical
Carbocation
Carbene

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Chemistry
Which of the following is used as filler in tyre of rubber ?

Carbon black
Coke
Graphite
Coal

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Chemistry
Which of the following is not a method of preparing oxygen?

Electrolysis of water
Decomposition of potassium permanganate
Decomposition of manganese dioxide
Fractional distillation of liquid air

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