31.

Assertion : Sulphur is oxidised by H₂O₂ in presence of Fe (III).

Reason : Fe (III) oxidises sulphur to sulphate.

• 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 : Chlorine undergoes disproportionation reaction in alkaline medium.

Reason : Cl₂ is an oxidising 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 : The formal oxidation no. of sulphur in Na₂S₄O₆ is 2.5.

Reason : Two S-atoms are not directly linked with O-atoms.

• 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 : C(CH₃)₃-CH₂-Br + NaOH $\to$C(CH₃)₂OH-CH₂-CH₃

Reason : It follows with formation of more stable carbocation.

• 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 wavelength of light absorbed is highest in

• [Co(NH₃)₅Cl]²⁺

• [Co(NH₃)₅H₂O]³⁺

• [Co(NH₃)₆]³⁺

• [Co(en)₃]³⁺

PCl₃ on hydrolysis gives fumes of

• H₃PO₃ + HCl

• H₃PO₄ + HCl

• H₃PO₂ and H₃PO₃

• H₃PO₂ + HCl

In solid ice, oxygen atom is surrounded

• tetrahedrally by 4 hydrogen atoms

• octahedrally by 2 oxygen and 4 hydrogen atoms

• tetrahedrally by 2 hydrogen and 2 oxygen atoms

• octahedrally by 6 hydrogen atoms

First compound of Xe synthesized was

• [XeF]⁺[XePtF₅]^-

• [XeO₂]

• Xe[PtF₆]

• O₂[XeF₆]

Which of the following is diamagnetic?

• [Cu(NH₃)₄]²⁺

• [NiCl₄]^2-

• [PtCl₄]^2-

• [Cu(H₂O)₄]²⁺

Which of the following is incorrect for physisorption?

• Reversible

• Increases with increase in temperature.

• Low heat of adsorption.

• Increases with increase in surface area.