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NAT I Medical Chemistry MCQs With Answers

Question # 1

Red lead is

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PbO

Pb₃O₄

PbO₂

Pb₄O₃

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Question # 2

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

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Question # 3

The essential component of organic compound is

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Question # 4

Number of elements presents in the fifth period of periodic table is

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Question # 5

Sodium thiosulfate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behaviour

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Question # 6

Which of the following belongs to the halogen family?

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Francium

Polonium

Radium

Astatine

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Question # 7

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

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HCI + anhyd. ZnCI₂

NaCI

PCI₅

SOCI₂

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Question # 8

Gooch crucible is used for the filtration of precipitates having

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High solubility

High concentration

High ignition temperature

Low temperature

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Question # 9

In cold countries ethylene glycol is added to water in radiators of cars during winter It result in

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Lowering in b.pt.

Reducing viscosity

Reducing specific heat

Lowering in freezing pt.

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