Assertion : Sb (II) is not precipitated as sulphide when in its alkaline solution H₂S is passed.

Reason : The concentration of S^2- ion in alkaline medium is inadequate for precipitation.

• 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 : Addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate AgBr rather than AgCl.

Reason : K_sp of AgCl < K_sp of AgBr.

• 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.

Strongest acid among the following is

• acetic acid

• FCH₂COOH

• F₂CHCOOH

• F₃CCOOH

Which of the following hydrogen halides is most  basic?

• HF

• HCl

• HBr

• HI

Sulphuryl chloride (SO₂Cl₂) reacts with white phosphorus (P₄) to give

• PCl₅, SO₂

• OPCl₃, SOCl₂

• PCl₅, SO₂, S₂Cl₂

• OPCl₃, SO₂, S₂Cl₂

Which of the following order of basic strength is correct?

• NH₃ < NH₂OH < HN₃ < NH₂-NH₂

• NH₂OH <HN₃ <NH₂-NH₂ <NH₃

• HN₃ <NH₃ <NH₂OH <NH₂-NH₂

• HN₃ <NH₂OH <NH₂-NH₂<NH₃

Which one forms KHX₂ type compound?

• HF

• HCl

• HI

• HBr

158.

Which of the following is stable (inert) to fire?

• CCl₄

• C₂H₅OH

• CH₄

• C₄H₁₀

Ionisation potential values of noble gases decrease down the group with increase in atomic size. Xenon forms binary fluorides by the direct reaction of elements. Identify the correct statement(s) from below.

• Only the heavier noble gases form such compounds

• It happens because the noble gases have higher ionisation energies

• It happens because the compounds are formed with electronegative ligands

• Octet of electrons provide the stable arrangements

Assertion: In some cases oxygen shows positive oxidation number though it is an electronegative element.

Reason : Fluorine is more electronegative than oxygen.

• 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 Assertion is false but Reason is true.