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IIT - Chemistry Chapter 36

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Chapter 36s-Block Elements

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01Chemistry

s-Block Elements Q01: Which statement about concept 1 is correct?

AAlkali metals have one valence electron in an ns orbital.

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

s-Block Elements 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.

DAlkali metals have one valence electron in an ns orbital.

03Chemistry

s-Block Elements 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.

CAlkali metals have one valence electron in an ns orbital.

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

04Chemistry

s-Block Elements Q04: Which conclusion about concept 1 is valid and unambiguous?

AIt requires every molecule to be linear and nonpolar.

BAlkali metals have one valence electron in an ns orbital.

CIt always produces sodium chloride as the only product.

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

05Chemistry

s-Block Elements Q05: Which statement about concept 1 remains true under usual IIT/NEET assumptions?

AAlkali metals have one valence electron in an ns orbital.

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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