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

Question # 2

Burning of coal and hydrocarbon in air are examples of :

Question # 3

Reaction between Zn and CuSO4can be called a system under

Question # 4

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

Question # 5

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

Question # 6

Calorie is equivalent to

Question # 7

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

Question # 8

In endothermic reactions, the heat content of the:

Question # 9

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

Question # 10

Which one of the following is not related to spontaneous process

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

When no work is done by the system

Question # 16

The subject matter of first law of thermochemistry is based on

Question # 17

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 # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

Neutralization of a strong acid with a strong base is

Question # 26

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

Question # 27

Calorie is equivalent to :

Question # 28

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

Question # 29

A reaction will also be called a spontaneous if

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 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).
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 In endothermic reactions, the heat contents of the:
A. Products equal to the reactants.
B. Reactants more than that of products.
C. Products more than that of reactants
D. Both (b) and (c)
4 The net heat change 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:
A. Henry's law.
B. Joule's principle.
C. Hess's law.
D. Law of conservation of energy.
5 Work is a
A. State function
B. Only function
C. Non-state function
D. State
6 A state function is a
A. Microscopic property
B. Macroscopic
C. Unique property
D. Both a and c
7 The change in heat energy of a chemical reaction at constant temperature and pressure is called
A. entahlpy change
B. heat of sublimation
C. bond energy
D. internal energy change
8 Which one of the following is not related to spontaneous process
A. Unidirectional
B. Real
C. Irreversible
D. Artificial
9 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
10 Reaction between Zn and CuSO4can be called a system under
A. Surrounding
B. Observation
C. system
D. None of above

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