Question # 1

Calorie is equivalent to

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0.4184 J

41.84 J

4.184 J

418.4 J

The heat contents of the system of known as.

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Entropy

Enthalpy

Work

Free energy

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

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Enthalpy change

Bond energy

Heat of sublimation

Internal energy change

Spontaneous processes are mostly

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Reversible

Irreversible

Not irreversible

None of these

The standard heat of formation is measured at 1 atmosphere and

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0 ^oC

100 ^oC

293 ^oC

25 ^oC

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

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It doubles

It becomes half

It does not change

It cannot be predicted

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

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Remains constant

Increase

Decrease

Increase a bit

The enthalpy of combustion is

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Positive

Negative

Either positive or negative

No correlation

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

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Enthalpy change

Bond energy

Heat of sublimation

Internal energy change

Which one of the following enthalpies is always an exothermic process.

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Enthalpy of atomization

Enthalpy of neutralization

Enthalpy of ionization

Enthalpy of dissociation

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The pressure of oxygen inside the bomb calorimeter is.

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100 atm

50 atm

25 atm

20 atm

Which one of the following process is endothermic

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condensation of steam

Freezing of water

electrolysis of water

None of these

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

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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

Which is not is state function

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Enthalpy

Entropy

Pressure

work

Which substance have delta E = Delta H and no pressure - volume work.

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Liquids only

Solids only

Gases only

Liquids and solids

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

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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

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Chemistry Fsc Part 1 Chapter 7 Online Test MCQs With Answers

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