ECAT Pre Engineering Chemistry Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 7 Thermo Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 7 Thermo Chemistry

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ECAT Chemistry Chapter 7 Thermo Chemistry

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Question # 1

The change in heat energy of a chemical reaction at constant temperature and pressure is called :

Question # 2

The real or imaginary surface separating the system from the surrounding is called

Question # 3

Neutralization of a strong acid with a strong base is

Question # 4

Which of the following statements is contrary to the first law of themodynamics

Question # 5

It is noticed that energy in the from of heat is either evolved or absorbed as a result of a:

Question # 6

The net heat in a chemical reaction is same, whether it is brought about in two or more different ways in one or several steps. It is known as

Question # 7

Which of the following statements is contrary to the first law of thermodynamics?

Question # 8

By comparing both initial and final states of the system, we can describe the change taking place in the

Question # 9

Burning of coal and hydrocarbon in air are examples of

Question # 10

In endothermic reactions, the heat contents of the:

Question # 11

The subject matter of first law of thermochemistry is based on:

Question # 12

It is noticed that energy in the form of heat is either evolved or absorbed as a result of a

Question # 13

If an endothermic reaction is allowed to take place very rapidly in air, the temperature of the surrounding air

Question # 14

For a given process, the heat changes at constant volume ( qv)are related to other as:

Question # 15

The majority of reactions which give stable products are:

Question # 16

The energy units in which heat changes usually expressed in SI-system are

Question # 17

When a piece of zinc is added to the copper sulphate solution, _______ colour of solution disappear

Question # 18

When no work is done by the system

Question # 19

In a chemical change, the energy in the from of heat will either be evolved or absorbed and this is called:

Question # 20

A process which takes place on its own without any outside assistance and moves from a non-equilibrium state towards an equilibrium state is termed as

Question # 21

When a piece of zinc is added to the copper sulfate solution,____________ color of solution disappear.

Question # 22

If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air

Question # 23

Which one of the following is not related to spontaneous process

Question # 24

A reaction will also be called a spontaneous if :

Question # 25

Some non-spontaneous processes can be made to take place by supplying energy to the system from

Question # 26

The energy units in which heat changes usually expressed in Sl-system are:

Question # 27

Neutralization of a strong acid with a strong abase is:

Question # 28

In endothermic reactions, the heat content of the:

Question # 29

In endothermic reactions, the heat contents of the surrounding air

Question # 30

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 A state function is a
A. Microscopic property
B. Macroscopic
C. Unique property
D. Both a and c
2 When no work is done by the system
A. The volume of system decreases
B. The volume of system increases
C. The volume of system does not change
D. None of above
3 If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air:
A. Remains constant.
B. Increase.
C. Decreases.
D. Remain unchanged.
4 The change in heat energy of a chemical reaction at constant temperature and pressure is called :
A. Enthalpy change.
B. Seat of sublimation.
C. Bind energy.
D. Internal energy change.
5 For a given process, the heat changes at constant volume ( qv)are related to other as:
A.

qp= qv

B.

qp<qv

C.

qp>qv

D.

qp=qv/2
6 The study of heat changes accompanying a chemical reaction is known as
A. Thermochemistry
B. Biochemistry
C. Physical chemistry
D. Analytical chemistry
7 Calorie is equivalent to
A. 0.4184 J
B. 41.84 J
C. 4.184 J
D. 418.4 J
8 Which one of the following is not related to spontaneous process
A. Unidirectional
B. Real
C. Irreversible
D. Artificial
9 The subject matter of first law of thermochemistry is based on
A. First law of Thermochemistry
B. First law of Thermodynamics
C. Second law of Thermochemistry
D. Second law of Thermodynamics
10 The study of heat changes accompanying a chemical reaction is known as :
A. Thermochemistry.
B. Biochemistry.
C. Physical chemistry.
D. Analytical chemistry.

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