CUET Level- I NEET Mock Test - 5 ( Chemistry)

A thermodynamic state function is a quantity

• used to determine heat changes

• whose value depends on temperature only

• whose value is independent of path

• used to determine pressure volume work

The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound

• Is always positive

• Is never negative

• May be positive or negative

• Is always negative

he work done in case of isothermal free expansion is

• Maximum

• Minimum

• Zero

• Positive

The enthalpies of all elements in their standard states are equal to

• Unity

• Zero

• <0

• Different for each element

Thermodynamics is not related to

• The rate at which a reaction proceeds

• The feasibility of a chemical reaction

• The extent to which a chemical reaction proceeds

• Energy changes involved in a chemical reaction

Enthalpy of sublimation of a substance is equal to

• Enthalpy of fusion

• Enthalpy of fusion + Enthalpy of vapourisation

• Enthalpy of vapourisation

• Twice the enthalpy of vapourisation

.If the volume of gas is reduced to half of its original volume then the specific heat will be ______.

• Reduce to half

• Remain constant

• Be doubled

• All of these

Which of the following is not correct?

• ∆G is zero for a reversible reaction

• ∆G is positive for a spontaneous reaction

• ∆G is negative for a spontaneous reaction

•  ∆G is positive for a non-spontaneous reaction

Which of the following is an extensive property?

• Molar heat capacity

• Temperature

• Enthalpy

• All of these

Which of the following property cannot be used to describe the state of a system?

• Pressure

• volume

• universal gas constant

• Temperature