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

Burning of coal and hydrocarbon in air are examples of

Question # 2

Work is a

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 the air, the temperature of the surrounding air:

Question # 5

The majority of reactions which give stable products are:

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

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

Question # 8

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 # 9

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

Question # 10

Burning of coal and hydrocarbon in air are examples of :

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

A reaction will also be called a spontaneous if :

Question # 15

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 # 16

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

Question # 17

The majority of reactions which give stable products are

Question # 18

Calorie is equivalent to :

Question # 19

Calorie is equivalent to

Question # 20

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

Question # 21

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

Question # 22

Neutralization of a strong acid with a strong abase is:

Question # 23

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

Question # 24

In endothermic reactions, the heat contents of the:

Question # 25

In endothermic reactions, the heat content of the:

Question # 26

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

Question # 27

A state function is a

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 In endothermic reactions, the heat contents of the surrounding air
A. Remains constant
B. Decreases
C. Increases
D. Fluctuates rapidly
2 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
3 Calorie is equivalent to :
A. 0.4184 J
B. 4184 J
C. 4.184 J
D. 418.4 J
4 Which one of the following is not related to spontaneous process.
A.

Unidirectional.

B. Real.
C.

Irreversible.

D. Artificial.
5 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.
6 For the reaction : NaOH + HCl---------------> NaCl + H2O the change in enthalpy is called:
A. Heat of reaction.
B. Heat of formation.
C. Heat of neutralization.
D. Heat of combustion.
7 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
8 In a chemical change, the energy in the from of heat will either be evolved or absorbed and this is called:
A. Endothermic.
B. Heat of products.
C. Exothermic reaction.
D. Heat of reaction.
9 Burning of coal and hydrocarbon in air are examples of :
A. Non-spontaneous reaction.
B. Spontaneous reaction.
C. Natural reaction
D. Both (a) and (C)
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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