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

Reaction between Zn and CuSO4can be called a system under

Question # 3

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

Question # 4

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

Question # 5

In endothermic reactions, the heat contents of the:

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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 # 10

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 # 11

Neutralization of a strong acid with a strong abase is:

Question # 12

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

Question # 13

Calorie is equivalent to

Question # 14

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 # 15

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

Question # 16

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

Question # 17

Work is a

Question # 18

A reaction will also be called a spontaneous if :

Question # 19

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

Question # 20

If an endothermic reaction is allowed to take place very rapidly in the 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

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

Question # 23

Which one of the following is not related to spontaneous process

Question # 24

The subject matter of first law of thermochemistry is based on

Question # 25

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

Question # 26

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

Question # 27

The majority of reactions which give stable products are:

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
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 A reaction will also be called a spontaneous if
A. It does not need energy to start with
B. It needs energy to carry the whole process
C. It needs energy at the end of reaction
D. It needs energy to start with
4 The majority of reactions which give stable products are
A. Exothermic
B. Isothermal
C. Endothermic
D. Both a and c
5 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.
6 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.
7 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
8 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
9 Work is a
A. State function
B. Only function
C. Non-state function
D. State
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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