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

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

Question # 3

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

Question # 4

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

Question # 5

A reaction will also be called a spontaneous if

Question # 6

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

Question # 7

In endothermic reactions, the heat contents of the:

Question # 8

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

Question # 9

By state, we mean the

Question # 10

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

Question # 11

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

Question # 12

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 # 13

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

Question # 14

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

Question # 15

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

Question # 16

The subject matter of first law of thermochemistry is based on:

Question # 17

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

Question # 18

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

Question # 19

In endothermic reactions, the heat content of the:

Question # 20

Which one of the following is not related to spontaneous process

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Calorie is equivalent to

Question # 25

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

Question # 26

Neutralization of a strong acid with a strong base is

Question # 27

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

Question # 28

A state function is a

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 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)
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 Work is a
A. State function
B. Only function
C. Non-state function
D. State
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 By state, we mean the
A. Reaction of system
B. Scope of a system
C. Condition of a system
D. None of above
6 Which one of the following is not related to spontaneous process.
A.

Unidirectional.

B. Real.
C.

Irreversible.

D. Artificial.
7 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
A. Henry's law
B. Joule's princile
C. Hess's law
D. law of conservation of energy
8 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
9 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
10 A state function is a
A. Microscopic property
B. Macroscopic
C. Unique property
D. Both a and c

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