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

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

Question # 2

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

Question # 3

A reaction will also be called a spontaneous if :

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Calorie is equivalent to

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The majority of reactions which give stable products are:

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

In endothermic reactions, the heat contents of the:

Question # 18

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 # 19

The majority of reactions which give stable products are

Question # 20

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

Question # 21

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

Question # 22

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 # 23

A reaction will also be called a spontaneous if

Question # 24

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

Question # 25

Work is a

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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 # 30

It is noticed that energy in the form 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 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
2 Neutralization of a strong acid with a strong abase is:
A. Natural acid base reaction.
B. Artificial acid base reaction.
C. Spontaneous acid base reaction.
D. Both (a) and (c).
3 Reaction between Zn and CuSO4can be called a system under
A. Surrounding
B. Observation
C. system
D. None of above
4 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.
5 By state, we mean the
A. Reaction of system
B. Scope of a system
C. Condition of a system
D. None of above
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 The subject matter of first law of thermochemistry is based on:
A. First law of Themochemistry.
B. First law of Thermodynamics.
C. Second law of Themochemistry.
D. Second law of Thermodynamics.
8 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
9 Which one of the following is not related to spontaneous process
A. Unidirectional
B. Real
C. Irreversible
D. Artificial
10 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

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