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MDCAT Chemistry Chapter 7 Reaction Kinetics Online Test MCQs With Answers

Question # 1

One Joule is equivalent to

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4.184 cal.

0.4184cal.

1/2 cal.

1/4.184 cal

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Question # 2

The measurement of enthalpy change at standard conditions means that we should manage the measurement at

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24°C at 1 atm

25°C at 1 atm

0C° at 1 atm

100C° 1 atm

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Question # 3

Calorie is equivalent to

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0.4184J

4.184J

418.4J

40.18J

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Question # 4

The exothermic process is

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Evaporation

Sublimation

Respiration

Boiling

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Question # 5

Which of the following enthalpy change always have a negative value

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∆Hf

∆H sol

∆Hc

∆Hat

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Question # 6

If a reaction involves only solids and liquids, which of the following is true?

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ΔH = ΔE

ΔΗ =ΔΕ

ΔH>ΔΕ

AH =AE +nRT

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Question # 7

The value of ∆V being very small. The term P∆V can be neglected for process involving

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Liquid and gas

Solids and gases

Liquid and solid

None of these

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Question # 8

The change in enthalpy of a system when one mole of the substance is completely burnt in excess of air or oxygen is called

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Heat of reaction

Heat of formation

Heat of atomization

Heat of combustion

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Question # 9

What is correct about heat of combustion

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It is applicable to gaseous substances only

It is always negative

It is always positive

It is positive in some cases while negative in other

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Question # 10

NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called

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Enthalpy of reaction

Enthalpy of Neutralisation

Enthalpy of formation

Enthalpy of combustion

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Question # 11

Which of the following processes has always. ∆H=-ve

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Formation of compound

Dilution of a solution

Dissolution of ionic compound

Combustion

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