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NAT I Engineering Chemistry MCQs With Answers

Question # 1

Which of the following is a molecular disease?

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Allergy

Cancer

German measles

Sickle cell anemia

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Question # 2

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

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Question # 3

The carbon atoms in calcium carbide are held by

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Ionic bonds

2 sigma bonds

2 covalent one co-ordinate bond

2 π and one σ bond

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Question # 4

Phosphide ion has the electronic structure similar to that of

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Nitride ion

Fluoride ion

Sodium ion

Chloride ion

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Question # 5

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

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Question # 6

Which of the following is directly related to Qualitative analysis?

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Identification

Separation

Measurement

Calculation

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Question # 7

Galena is an ore of

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Gallium

Lead

Tin

Germanium

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Question # 8

Which of the following geometry is associated with the compound in which the central atom assumes sp³ d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

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Question # 9

Covalent compounds are soluble in

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Polar solvents

Non-polar solvents

Concentrated acids

All solvents

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Question # 10

The freezing point of 1 molal NaCI solution assuming NaCI to be 100% dissociated in water in

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-1.86°C

-3.72°C

+1.86°C

+3.72°C

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Question # 11

Which of the following value of ΔHf° represent that the product is least stable?

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-94.0 kcal mol^-1

-231.6 kcal mol^-1

+21.4 kcal mol^-1

+64.8 kcal mol^-1

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