CBSE
Multiple Choice QuestionsSmallest intermolecular distance is found in
O2
O2+
O2-
O22-
In which of the following bonding is possible?
Assertion : All F- S -F angle in SF4 is greater than 90° but less than 180°.
Reason : The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.
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.
dsp2 hybridisation is found in
[Ni(CN)4]2-
[CoCl4]2-
[CuCl4]3-
[CuCl4]2-
Hybridisation in are respectively
sp2, sp2, sp3
sp2, sp3, sp3
sp3, sp3, sp2
sp3, sp2, sp3
Assertion : NF3 is a weaker ligand than N(CH3)3 .
Reason : NF3 ionizes to give F- ions in aqueous solution.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
The number of lone pairs of electrons on the central atoms of H2O, SnCl2, PCl3 an XeF2 respectively are
2, 1, 1, 3
2, 2, 1, 3
3, 1, 1, 2
2, 1, 2, 3
Assertion : The O - O bond length in H2O2 is shorter than that of O2F2.
Reason : H2O2 is an ionic compound.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following compounds possesses the C-H bond with the lowest bond dissociation energy?
Toluene
Benzene
n-Pentane
2,2-Dimethylpropane
Assertion : The free gaseous Cr atom has six unpaired electrons.
Reason: Half-filled s orbital has greater stability.
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.
