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

00:00
Question # 1

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

Question # 2

Calorie is equivalent to

Question # 3

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

Question # 4

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

Question # 5

Neutralization of a strong acid with a strong base is

Question # 6

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

Question # 7

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

Question # 8

Neutralization of a strong acid with a strong abase is:

Question # 9

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

Question # 10

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 # 11

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

Question # 12

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

Question # 13

Work is a

Question # 14

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

Question # 15

When no work is done by the system

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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 # 20

Which one of the following is not related to spontaneous process

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Burning of coal and hydrocarbon in air are examples of

Question # 25

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

Question # 26

A reaction will also be called a spontaneous if :

Question # 27

The majority of reactions which give stable products are:

Question # 28

Reaction between Zn and CuSO4can be called a system under

Question # 29

A state function is a

Question # 30

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

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ECAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 By state, we mean the
A. Reaction of system
B. Scope of a system
C. Condition of a system
D. None of above
2 In endothermic reactions, the heat contents of the surrounding air
A. Remains constant
B. Decreases
C. Increases
D. Fluctuates rapidly
3 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
4 Calorie is equivalent to :
A. 0.4184 J
B. 4184 J
C. 4.184 J
D. 418.4 J
5 The study of heat changes accompanying a chemical reaction is known as :
A. Thermochemistry.
B. Biochemistry.
C. Physical chemistry.
D. Analytical chemistry.
6 The study of heat changes accompanying a chemical reaction is known as
A. Thermochemistry
B. Biochemistry
C. Physical chemistry
D. Analytical chemistry
7 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.
8 The subject matter of first law of thermochemistry is based on:
A. First law of Themochemistry.
B. First law of Thermodynamics.
C. Second law of Themochemistry.
D. Second law of Thermodynamics.
9 In endothermic reactions, the heat content of the:
A. Products is more than that of reactants.
B. Reactants is more than than to products.
C. Both (a) and (b).
D. Reactants and products are equal.
10 Which of the following statements is contrary to the first law of thermodynamics?
A. Energy can neither be created no destroyed.
B. One form of energy can be transferred into an equivalent amount of the kinds of energy.
C. In a adiabatic process, the work done is independent of its path.
D. Continuous production of mechanical work without supplying an equivalent amount of heat is possible.

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