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 air, the temperature of the surrounding air

Question # 2

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

Question # 3

The majority of reactions which give stable products are

Question # 4

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

Question # 5

In endothermic reactions, the heat content of the:

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Neutralization of a strong acid with a strong base is

Question # 10

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

Question # 11

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:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

When no work is done by the system

Question # 17

In endothermic reactions, the heat contents of the surrounding air

Question # 18

A reaction will also be called a spontaneous if

Question # 19

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

Question # 20

Work is a

Question # 21

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

Question # 22

The majority of reactions which give stable products are:

Question # 23

Reaction between Zn and CuSO4can be called a system under

Question # 24

Which one of the following is not related to spontaneous process

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

A reaction will also be called a spontaneous if :

Question # 30

The subject matter of first law of thermochemistry is based on

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 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)
2 When a system absorbs energy, the sign of delta E is
A. Neither positive nor negative
B. Negative
C. Positive
D. None of above
3 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.
4 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
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. increases
C. decreases
D. remain unchanged
6 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)
7 The study of heat changes accompanying a chemical reaction is known as
A. Thermochemistry
B. Biochemistry
C. Physical chemistry
D. Analytical chemistry
8 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.
9 In endothermic reactions, the heat content of the:
A. Products is more than that of reactants.
B. Reactants is more than than to products.
C. Both (a) and (b).
D. Reactants and products are equal.
10 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

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