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

A state function is a

Question # 2

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

Question # 3

Reaction between Zn and CuSO4can be called a system under

Question # 4

Calorie is equivalent to :

Question # 5

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

Question # 6

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

Question # 7

Neutralization of a strong acid with a strong abase is:

Question # 8

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

Question # 9

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

Question # 10

When a system absorbs energy, the sign of delta E is

Question # 11

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

Question # 12

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

Question # 13

When no work is done by the system

Question # 14

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

Question # 15

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 # 16

The subject matter of first law of thermochemistry is based on

Question # 17

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

Question # 18

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 # 19

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

Question # 20

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

Question # 21

By state, we mean the

Question # 22

In endothermic reactions, the heat contents of the surrounding air

Question # 23

The majority of reactions which give stable products are:

Question # 24

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

Question # 25

A reaction will also be called a spontaneous if :

Question # 26

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

Question # 27

Neutralization of a strong acid with a strong base is

Question # 28

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

Question # 29

For the reaction : NaOH + HCl---------------> NaCl + H2O the change in enthalpy is called:

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 A reaction will also be called a spontaneous if :
A. It does no need energy to start with.
B. It needs energy to carry the whole process.
C. It needs energy at the end of reaction.
D. It needs energy to stat with.
2 It is noticed that energy in the form of heat is either evolved or absorbed as a result of a
A. Physical change
B. Chemical change
C. Biological change
D. All of above
3 In endothermic reactions, the heat contents of the surrounding air
A. Remains constant
B. Decreases
C. Increases
D. Fluctuates rapidly
4 When a system absorbs energy, the sign of delta E is
A. Neither positive nor negative
B. Negative
C. Positive
D. None of above
5 Burning of coal and hydrocarbon in air are examples of
A. Non-spontaneous reaction
B. Spontaneous reaction
C. Natural reaction
D. Both b and c
6 The majority of reactions which give stable products are
A. Exothermic
B. Isothermal
C. Endothermic
D. Both a and c
7 Calorie is equivalent to
A. 0.4184 J
B. 41.84 J
C. 4.184 J
D. 418.4 J
8 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
9 Which one of the following is not related to spontaneous process.
A.

Unidirectional.

B. Real.
C.

Irreversible.

D. Artificial.
10 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

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