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NAT I Medical Chemistry MCQs With Answers

Question # 1

The number of unpaired electrons in the P-subshell of oxygen atom

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Question # 2

1 mole of CH₄ contains

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6.02 x 10²³ atoms of H

4 g-atom of hydrogen

1.81 x 1023 molecules of CH₄

3.0 g of carbon

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Question # 3

Gooch crucible used to filter the solution of

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H₂SO₄

HCI

KMnO₄

Both B & C

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Question # 4

The number of electrons in the M shell of the element with number 24 is

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Question # 5

The rotation of two carbon atoms joined by double bond would happened only if

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Pi bond is broken

Sigma bond is broken

Both bonds are broken

None of above

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Question # 6

The equilibrium constant in a reversible chemical reaction at a given temperature

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Depends on the initial concentration of the reactants

Depends on the concentration of one of the products at equilibrium

Does not depend on the initial concentrations of recatants

Is not characteristic of the reaction

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Question # 7

The essential component of organic compound is

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Question # 8

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

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Hydrolysis

Oxidation

Hydrogenation

Electrolysus

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Question # 9

Which one of the following has the lowest boiling point?

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