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Chapter 11Chemical Thermodynamics

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01Chemistry

Chemical Thermodynamics Q01: Which statement about concept 1 is correct?

AAt constant pressure, heat absorbed equals enthalpy change.

BIt is defined as complete loss of all protons from an atom.

CIt requires conversion of every substance into a noble gas.

DIt is independent of composition, structure, concentration and temperature in every case.

02Chemistry

Chemical Thermodynamics Q02: A student is revising concept 1. Which correction is chemically sound?

AIt occurs only by peptide bond formation in proteins.

BIt is explained solely by colour change without particles or bonds.

CIt always has zero relation to electrons, ions or molecular structure.

DAt constant pressure, heat absorbed equals enthalpy change.

03Chemistry

Chemical Thermodynamics Q03: In a standard exam item involving concept 1, which inference is valid?

AIt means all reactions become spontaneous without conditions.

BIt is a nuclear fission rule rather than a chemistry principle.

CAt constant pressure, heat absorbed equals enthalpy change.

DIt is valid only at absolute zero for pure noble gases.

04Chemistry

Chemical Thermodynamics Q04: Which conclusion about concept 1 is valid and unambiguous?

AIt requires every molecule to be linear and nonpolar.

BAt constant pressure, heat absorbed equals enthalpy change.

CIt always produces sodium chloride as the only product.

DIt is measured by atomic mass number alone in every problem.

05Chemistry

Chemical Thermodynamics Q05: Which statement about concept 1 remains true under usual IIT/NEET assumptions?

AAt constant pressure, heat absorbed equals enthalpy change.

BIt is defined as complete loss of all protons from an atom.

CIt requires conversion of every substance into a noble gas.

DIt is independent of composition, structure, concentration and temperature in every case.

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