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 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 # 2

The reaction of zinc with the copper sulfate solution is an example of.

Question # 3

By state, we mean the

Question # 4

Which one of the following is not related to spontaneous process

Question # 5

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

Question # 6

Enthalpy of neutralization of all the strong acids and strong bases has the same value because:

Question # 7

A reaction will also be called a spontaneous if :

Question # 8

Some Non-spontaneous process can be made to take place by supplying energy to the system from :

Question # 9

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

Question # 10

Which one of the following is not related to spontaneous process.

Question # 11

The majority of reactions which give stable products are

Question # 12

In endothermic reactions, the heat contents of the surrounding air

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The majority of reactions which give stable products are:

Question # 20

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

Question # 21

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

Question # 22

Calorie is equivalent to :

Question # 23

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

Question # 24

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

Question # 25

Calorie is equivalent to

Question # 26

Burning of coal and hydrocarbon in air are examples of :

Question # 27

Neutralization of a strong acid with a strong base is

Question # 28

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 # 29

Burning of coal and hydrocarbon in air are examples of

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 In endothermic reactions, the heat contents of the surrounding air
A. Remains constant
B. Decreases
C. Increases
D. Fluctuates rapidly
2 When a piece of zinc is added to the copper sulphate solution, _______ colour of solution disappear
A. Pink
B. Purple
C. Blue
D. Brown
3 If an endothermic reaction is allowed to take place very rapidly in air, the temperature of the surrounding air :
A. Remains constant.
B. Decreases.
C. Increases.
D. Fluctuates rapidly.
4 Which of the following statements is contrary to the first law of themodynamics
A. Energy can neither be created nor destroyed
B. One form of energy can be transferred into an equivalent amount of other kinds of energy
C. In an adiabatic process, the work done is independent of its path
D. Continuous production of mechanical work without supplying and equivalent amount of heat is possible
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 In a chemical change, the energy in the from of heat will either be evolved or absorbed and this is called:
A. Endothermic.
B. Heat of products.
C. Exothermic reaction.
D. Heat of reaction.
7 Calorie is equivalent to
A. 0.4184 J
B. 41.84 J
C. 4.184 J
D. 418.4 J
8 Reaction between Zn and CuSO4can be called a system under
A. Surrounding
B. Observation
C. system
D. None of above
9 Burning of coal and hydrocarbon in air are examples of :
A. Non-spontaneous reaction.
B. Spontaneous reaction.
C. Natural reaction
D. Both (a) and (C)
10 Which of the following statements is contrary to the first law of thermodynamics?
A. Energy can neither be created no destroyed.
B. One form of energy can be transferred into an equivalent amount of the kinds of energy.
C. In a adiabatic process, the work done is independent of its path.
D. Continuous production of mechanical work without supplying an equivalent amount of heat is possible.

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