41.

Assertion : Magnesium is extracted by the electrolysis of fused mixture of MgCl₂, NaCl and CaCl₂.

Reason : Calcium chloride acts as a reducing agent.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Zinc displaces copper from copper sulphate solution.

Reason : The ${\mathrm{E}}^{°}$of zinc is= 0.76 V and that of copper is + 0.34 V.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Helium has the highest value of ionisation energy among all the elements known.

Reason : Helium has the highest value of electron affinity among all the elements known.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : The overall order of the reaction is the sum of the exponents of all the reactants in the rate expression.

Reason : There are many higher order reactions.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Transition metals are poor reducing agents.

Reason : Transition metals form numerous alloys
with other metals.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion: Due to Frenkel defect, density of the crystalline solid decreases.

Reason : In Frenkel defect, cation or anion leaves the crystal.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : The degree of complex formation in actinides decreases in the order ${\mathrm{M}}^{4+} > {\mathrm{MO}}_2^{2+} > {\mathrm{M}}^{3+} > {\mathrm{MO}}_2^{+}$.

Reason : Actinides form complexes with p-bonding ligands such as alkyl phosphines and thioethers.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion:

 is named as tetrakis (ethylene-diammine)$\mathrm{\mu }-$hydroxo-m-imido dicobalt (III) ion.

Reason : In naming polynuclear complexes i.e., containing two or more metal atoms joined by bridging ligands, the word $\mathrm{\mu }$ is added with hyphen before the name of such ligands.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The product P is

• 

• 

• 

• None of these.

Which of the following reactions does not yield an amine?

• R-X + NH₃ $\to$

• R-CH$=$NOH + [H] $\stackrel{{\mathrm{NaC}}_2{\mathrm{H}}_5\mathrm{OH}}{\to }$

• R-CN +H₂O $\stackrel{{\mathrm{H}}^{+}}{\to }$

• R-CONH₂ $\stackrel{{\mathrm{LiAlH}}_4}{\to }$