Question # 1

Which one of the following is not related to spontaneous process

Choose an answer

Unidirectional

Real

Irreversible

Artificial

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

Choose an answer

Pink.

Purple.

Blue.

Brown.

The majority of reactions which give stable products are:

Choose an answer

Exothermic.

Isothermal.

Endothermic.

Both (b) and (c).

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

Choose an answer

Internal source.

Any source.

External source.

All of above.

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

Choose an answer

Energy can neither be created no destroyed.

One form of energy can be transferred into an equivalent amount of the kinds of energy.

In a adiabatic process, the work done is independent of its path.

Continuous production of mechanical work without supplying an equivalent amount of heat is possible.

The majority of reactions which give stable products are

Choose an answer

Exothermic

Isothermal

Endothermic

Both a and c

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

Choose an answer

q_p= q_v

q_p<q_v

q_p>q_v

q_p=q_v/2

Work is a

Choose an answer

State function

Only function

Non-state function

State

Burning of coal and hydrocarbon in air are examples of :

Choose an answer

Non-spontaneous reaction.

Spontaneous reaction.

Natural reaction

Both (a) and (C)

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

Choose an answer

Remains constant

Decreases

Increases

Fluctuates rapidly

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

Choose an answer

entahlpy change

heat of sublimation

bond energy

internal energy change

Reaction between Zn and CuSO₄can be called a system under

Choose an answer

Surrounding

Observation

system

None of above

Calorie is equivalent to

Choose an answer

0.4184 J

41.84 J

4.184 J

418.4 J

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

Choose an answer

Imaginary line

Boundary

Real line

All of above

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

Choose an answer

Physical change.

Chemical change.

Biological change.

All of above.

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

Choose an answer

Energy can neither be created nor destroyed

One form of energy can be transferred into an equivalent amount of other kinds of energy

In an adiabatic process, the work done is independent of its path

Continuous production of mechanical work without supplying and equivalent amount of heat is possible

Burning of coal and hydrocarbon in air are examples of

Choose an answer

Non-spontaneous reaction

Spontaneous reaction

Natural reaction

Both b and c

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

Choose an answer

Surrounding

System and surrounding

System

State function

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

Choose an answer

Oxidation reduction reaction.

Spontaneous reaction.

Spontaneous redox reaction.

Non-spontaneous reaction.

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

Choose an answer

First law of Themochemistry.

First law of Thermodynamics.

Second law of Themochemistry.

Second law of Thermodynamics.

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

Choose an answer

Remains constant.

Increase.

Decreases.

Remain unchanged.

A reaction will also be called a spontaneous if :

Choose an answer

It does no need energy to start with.

It needs energy to carry the whole process.

It needs energy at the end of reaction.

It needs energy to stat with.

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

Choose an answer

Enthalpy change.

Seat of sublimation.

Bind energy.

Internal energy change.

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

Choose an answer

Joule.

Calorie.

Kilo Joule.

Both (a) and (c)

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

Choose an answer

Endothermic.

Heat of products.

Exothermic reaction.

Heat of reaction.

In endothermic reactions, the heat content of the:

Choose an answer

Products is more than that of reactants.

Reactants is more than than to products.

Both (a) and (b).

Reactants and products are equal.

More Classes

Other Links

ECAT Chemistry Chapter 7 Thermo Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer