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

00:00
Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The majority of reactions which give stable products are

Question # 7

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

Question # 8

A reaction will also be called a spontaneous if

Question # 9

A reaction will also be called a spontaneous if :

Question # 10

The majority of reactions which give stable products are:

Question # 11

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

Question # 12

The study of heat changes accompanying a chemical reaction is known as :

Question # 13

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

Question # 14

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 # 15

In endothermic reactions, the heat contents of the surrounding air

Question # 16

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

Question # 17

Which one of the following is not related to spontaneous process

Question # 18

Calorie is equivalent to :

Question # 19

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

Question # 20

A state function is a

Question # 21

The reaction of Zinc with copper sulphate solution is an example of

Question # 22

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

Question # 23

Work is a

Question # 24

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 # 25

The study of heat changes accompanying a chemical reaction is known as

Question # 26

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

Question # 27

Burning of coal and hydrocarbon in air are examples of

Question # 28

When no work is done by the system

Question # 29

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

Question # 30

The subject matter of first law of thermochemistry is based on

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 Calorie is equivalent to
A. 0.4184 J
B. 41.84 J
C. 4.184 J
D. 418.4 J
2 If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air
A. remains constant
B. increases
C. decreases
D. remain unchanged
3 By comparing both initial and final states of the system, we can describe the change taking place in the
A. Surrounding
B. Both a and c
C. System
D. None of above
4 One mole of oxygen confined in a cylinder fitted with a piston is an example of
A. Surrounding
B. System and surrounding
C. System
D. State function
5 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.
6 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.
7 By state, we mean the
A. Reaction of system
B. Scope of a system
C. Condition of a system
D. None of above
8 Some non-spontaneous processes can be made to take place by supplying energy to the system from
A. Internal source
B. Any source
C. External source
D. All of above
9 Reaction between Zn and CuSO4can be called a system under
A. Surrounding
B. Observation
C. system
D. None of above
10 Some Non-spontaneous process can be made to take place by supplying energy to the system from :
A. Internal source.
B. Any source.
C. External source.
D. All of above.

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