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

Neutralization of a strong acid with a strong abase is:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

In endothermic reactions, the heat contents of the surrounding air

Question # 6

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

Question # 7

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 # 8

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

Question # 9

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

Question # 10

The subject matter of first law of thermochemistry is based on

Question # 11

A reaction will also be called a spontaneous if :

Question # 12

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

Question # 13

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

Question # 14

Calorie is equivalent to

Question # 15

Neutralization of a strong acid with a strong base is

Question # 16

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

Question # 17

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

Question # 18

Which one of the following is not related to spontaneous process

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

When no work is done by the system

Question # 25

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

Question # 26

In endothermic reactions, the heat content of the:

Question # 27

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

Question # 28

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

Question # 29

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 # 30

Calorie is equivalent to :

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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 study of heat changes accompanying a chemical reaction is known as :
A. Thermochemistry.
B. Biochemistry.
C. Physical chemistry.
D. Analytical chemistry.
3 When a piece of zinc is added to the copper sulfate solution,____________ color of solution disappear.
A. Pink.
B. Purple.
C. Blue.
D. Brown.
4 In endothermic reactions, the heat contents of the surrounding air
A. Remains constant
B. Decreases
C. Increases
D. Fluctuates rapidly
5 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
6 Work is a
A. State function
B. Only function
C. Non-state function
D. State
7 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
8 The study of heat changes accompanying a chemical reaction is known as
A. Thermochemistry
B. Biochemistry
C. Physical chemistry
D. Analytical chemistry
9 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
10 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.

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