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

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

Question # 3

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

Question # 4

In endothermic reactions, the heat content of the:

Question # 5

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 # 6

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

Question # 7

Which one of the following is not related to spontaneous process

Question # 8

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

Question # 9

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

Question # 10

Calorie is equivalent to :

Question # 11

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

Question # 12

A reaction will also be called a spontaneous if

Question # 13

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

Question # 14

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

Question # 15

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 # 16

Reaction between Zn and CuSO4can be called a system under

Question # 17

The subject matter of first law of thermochemistry is based on

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

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

Burning of coal and hydrocarbon in air are examples of

Question # 27

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

Question # 28

Burning of coal and hydrocarbon in air are examples of :

Question # 29

Work is a

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 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 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
3 The reaction of Zinc with copper sulphate solution is an example of
A. Oxidation reduction reaction
B. Spontaneous reaction
C. Spontaneous redox reaction
D. Non-spontaneous reaction
4 Neutralization of a strong acid with a strong base is
A. Natural acid base reaction
B. Artificial acid base reaction
C. Spontaneous acid base reaction
D. both a and c
5 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
6 Calorie is equivalent to :
A. 0.4184 J
B. 4184 J
C. 4.184 J
D. 418.4 J
7 For a given process, the heat changes at constant volume ( qv)are related to other as:
A.

qp= qv

B.

qp<qv

C.

qp>qv

D.

qp=qv/2
8 Enthalpy of neutralization of all the strong acids and strong bases has the same value because:
A. Neutralization leads to the formation of salt and water.
B. Strong acids and bases are ionic substances.
C. Acids always give rise to H+ions and bases always furnish OH-ions.
D. The net chemical change involve the combination of H+ and OH-ions to form water.
9 The majority of reactions which give stable products are
A. Exothermic
B. Isothermal
C. Endothermic
D. Both a and c
10 Which one of the following is not related to spontaneous process.
A.

Unidirectional.

B. Real.
C.

Irreversible.

D. Artificial.

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