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 majority of reactions which give stable products are:

Question # 2

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

Question # 3

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

Question # 4

A reaction will also be called a spontaneous if :

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Burning of coal and hydrocarbon in air are examples of :

Question # 11

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

Question # 12

Calorie is equivalent to :

Question # 13

In endothermic reactions, the heat contents of the:

Question # 14

In endothermic reactions, the heat contents of the surrounding air

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Neutralization of a strong acid with a strong base is

Question # 19

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

Question # 20

Burning of coal and hydrocarbon in air are examples of

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Calorie is equivalent to

Question # 25

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

Question # 26

One mole of oxygen confined in a cylinder fitted with a piston is an example of

Question # 27

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

Question # 28

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

Question # 29

Reaction between Zn and CuSO4can be called a system under

Question # 30

When no work is done by the system

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Sr.# Question Answer
1 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.
2 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
3 The energy units in which heat changes usually expressed in SI-system are
A. Joule
B. Calorie
C. Kilo Joule
D. Both a and c
4 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
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:
A. Spontaneous process.
B. Natural process.
C. Non-Spontaneous process.
D. Both (a) and (b).
6 The study of heat changes accompanying a chemical reaction is known as :
A. Thermochemistry.
B. Biochemistry.
C. Physical chemistry.
D. Analytical chemistry.
7 The energy units in which heat changes usually expressed in Sl-system are:
A. Joule.
B. Calorie.
C. Kilo Joule.
D. Both (a) and (c)
8 A reaction will also be called a spontaneous if
A. It does not 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 start with
9 When a system absorbs energy, the sign of delta E is
A. Neither positive nor negative
B. Negative
C. Positive
D. None of above
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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