Question # 1

The net change in a chemical reaction is same whether it takes place directly or indirectly is

Choose an answer

Henry's law

Charles's

Hess's lass

Graham's law

One of the following statements about Born-Haber cycle is correct. Which is that statement

Choose an answer

Born-Haber cycle is different from Hess's law

The energy change in a cyclic process is not zero

The lattice energy of the crystalline substances can be calculated easily

Heat of formation of the product and the lattice energy of the substance can be calculated simultaneously

The born Haber cycle is the best application of law.

Choose an answer

Boyle's

Dalton's

Hess's

Graham's

A chemical change always involve

Choose an answer

Absorption of heat

Evolution of heat

Either absorption or evolution of heat

The liberation of heat and light energy

Which process is endothermic and spontaneous

Choose an answer

Neutralization of NaOH with HCl

Formation of NH3 from H2 and N2

Formation of H2O from H2 and O2

Evaporation of sea water

The standard heat of formation is measured at 1 atmosphere and

Choose an answer

0 ^oC

100 ^oC

293 ^oC

25 ^oC

Standard enthalpy of combustion of carbon is -394 kJ mol-1 than, which is the standard enthalpy of formation of CO2

Choose an answer

+394 kJ

-394 kJ

0 kJ

+197 kJ

In endothermic reactions, the heat content of the

Choose an answer

Products is more then that of reactants

Reactants is more than that of products

Both a and b

Reactant and products is equal

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

Choose an answer

Henry's law

Hess's law

Joule's principle

Law of conservation of energy

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

Choose an answer

Enthalpy change

Bond energy

Heat of sublimation

Internal energy change

Whenever a reaction is endothermic, then it means that

Choose an answer

Heat is transferred from surrounding to the system

Heat is transferred system to the surrounding

Heat content of the product is greater than that of reactants

Heat content of the reactants is greater than the products

The heat contents of the system of known as.

Choose an answer

Entropy

Enthalpy

Work

Free energy

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 knnown as

Choose an answer

Henry's law

Hess's law

Joule's principle

Law of combustion

The enthalpy of combustion is

Choose an answer

Positive

Negative

Either positive or negative

No correlation

Which one of the following process is endothermic

Choose an answer

condensation of steam

Freezing of water

electrolysis of water

None of these

The S.I. units for the molar heat capacity are

Choose an answer

Joule Cm^-3degree^-1

Joule deg^-1atm^-1

Joule deg^-1mol^-1

Joule deg^-1kg^-1

If an endothermic reaction is allowed to take place very rapidly i the air, the temperature fo the surrounding air.

Choose an answer

Remains constant

Increase

Decrease

Remain unchanged

Which of the following statement is contrary to the first law of thermodynamics

Choose an answer

An equivalent amount of heart 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 an equivalent is amount of heat possible

The pressure of oxygen inside the bomb calorimeter is.

Choose an answer

100 atm

50 atm

25 atm

20 atm

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

Decrease

Increase a bit

Choose an answer

Heat of reaction

Heat of sublimation

Heat of neutralization

Heat of combustion

Which of the following value of heat of formation indicates that the product is least stable.

Choose an answer

-94 KJ

-231.6 KJ

+21.4 KJ

+70 KJ

What happens to the enthalpy change when the coeffficients of a chemical equation are douubled

Choose an answer

It doubles

It becomes half

It does not change

It cannot be predicted

Which is not is state function

Choose an answer

Enthalpy

Entropy

Pressure

work

At constant volume of a system remains constant and the heat is absorbed by the system, them amount of heat absorbed is called

Choose an answer

Enthaply change of the system

Internal energy change of the system

Total enthalphy of the system

Total internal energy of the system

More Classes

Other Links

Chemistry Fsc Part 1 Chapter 7 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