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IIT - Chemistry Chapter 27

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Chapter 27Aldehydes and Ketones

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01Chemistry

Aldehydes and Ketones Q01: Which statement about concept 1 is correct?

AAldehydes and ketones contain a polar carbonyl group.

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

Aldehydes and Ketones 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.

DAldehydes and ketones contain a polar carbonyl group.

03Chemistry

Aldehydes and Ketones 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.

CAldehydes and ketones contain a polar carbonyl group.

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

04Chemistry

Aldehydes and Ketones Q04: Which conclusion about concept 1 is valid and unambiguous?

AIt requires every molecule to be linear and nonpolar.

BAldehydes and ketones contain a polar carbonyl group.

CIt always produces sodium chloride as the only product.

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

05Chemistry

Aldehydes and Ketones Q05: Which statement about concept 1 remains true under usual IIT/NEET assumptions?

AAldehydes and ketones contain a polar carbonyl group.

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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