Assertion : Sb (II) is not precipitated as sulphide when in its alkaline solution H2S is passed.
Reason : The concentration of S2- 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 : Ksp of AgCl < Ksp 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
D.
F3CCOOH
Fluorine is a highly electronegative element, it withdraws electron from the neighbouring atoms. Therefore, more is the number of fluorine atoms attached, greater will be the acidity of the molecules. e.g. FCH2COOH is more acidic than CH3COOH. Therefore, correct order of acidity is:
CF3COOH > CF2HCOOH > FCH2COOH > CH3COOH
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
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.