1st Year Chemistry MCQS with Answers Chapter 7

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1st Year Chemistry MCQS with Answers
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The S.I. units for the molar heat capacity are
Joule deg-1mol-1
Joule deg-1kg-1
Joule deg-1atm-1
Joule Cm-3degree-1

One of the following statements about Born-Haber cycle is correct. Which is that statement
Born-Haber cycle is different from Hess’s law
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 energy change in a cyclic process is not zero

Most of the reaction which give stable products are
None of these

What happens to the enthalpy change when the coeffficients of a chemical equation are douubled
It becomes half
It doubles
It cannot be predicted
It does not change

The change in heat energy of a chemical reaction at constant temperature and pressure is called
Internal energy change
Heat of sublimation
Enthalpy change
Bond energy

Calorie is equivalent to
41.84 J
0.4184 J
418.4 J
4.184 J

For a given process, the heat change at constant pressure (qp) and at constant volume (qv) are related to each other as
qp< qv
qp> qv
qp= qv/2
qp= qv

The net change in a chemical reaction is same whether it takes place directly or indirectly is
Graham’s law
Hess’s lass
Henry’s law

Which of the following statement is contrary to the first law of thermodynamics
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
An equivalent amount of heart energy can neither be created nor destroyed

Whenever a reaction is endothermic, then it means that
Heat content of the reactants is greater than the products
Heat content of the product is greater than that of reactants
Heat is transferred system to the surrounding
Heat is transferred from surrounding to the system

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