Question # 1

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

Which of the following with aqueous KOH will give acetaldehyde?

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1,2-Dichloroethane

1, 1-Dichloroethane

Chloroacetic acid

Ethyl chloride

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

The following has zero valency

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Na

Be

AI

Kr

The ratio of the ionization energy of H and Be³⁺ is

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1 : 1

1 : 3

1 : 9

1 : 16

Wt. of 112 ml of oxygen at NTP on liquefaction would be

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0.32 g

0.64 g

0.16 g

0.96 g

Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

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HCI + anhyd. ZnCI₂

NaCI

PCI₅

SOCI₂

Bromine is obtained on a commercial scale from

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Caliche

Carnallite

Common satl

Cryolite

Which of the following fluorides does not exist?

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NF₅

PF₅

AsF₅

SbF₅

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NAT I Medical Chemistry MCQs With Answers

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