Question # 1

Octane number can be changed by

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Isomerisation

Alkylation

Cyclisation

All of these

Natural frertilizer provides phosphorus to plants in the form of P₂O₅

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1.2 kg

2.2 kg

3.2 kg

4 kg

ΔH_{Neutralisation} is always

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Positive

Negative

Zero

Positive or negative

The relative rates of diffusion of a gas (Mol, wt. - 98) as compared to hydrogen will be

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1/7

1/5

1/4

1

Toluene can be oxidized to benzonic acid by

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KMnO4 (alk)

K₂Cr₂O₇(acidic)

Both

None

Enzymes are

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Proteins

Mineral

Oils

Fatty acids

In a crystal a ≠ b ≠ c, a = γ = 90° and β ≠ 90°, it is

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Monoclinic

Rhombic

Trigonal

Tetragonal

Calcium cyanamide on treatment with steam under pressure gives NH₃ and

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Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

Which of the following is acidic?

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SO₃

N₂O

BeO

HgO

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NAT I Medical Chemistry MCQs With Answers

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