CBSE
Multiple Choice QuestionsAssertion : La(OH)3 is more basic than Lu(OH)3
Reason : Size of Lu3+ increases and shows more covalent character.
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
How many structural isomers are possible for C4H9Cl ?
2
4
8
10
Which of the following has more unpaired d-electrons ?
Zn
Fe2+
Ni3+
Cu+
In the periodic table actinides occupy :
III B group in 7th row
III B group in 6th row
III B group in 5th row
None of the above
Assertion : F- ion is a weak ligand and forms outer orbital complex.
Reason : F- ion cannot force the electrons of d and d orbitals of the inner shell to occupy dxy, dyz and dzx orbitals of the same shell.
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.
Fungicides are organic compounds of :
mercury
fluorine
lead
chlorine
Assertion : Ce4+ is used as an oxidising agent in volumetric analysis.
Reason : Ce4+has the tendency of attaining + 3 oxidation state
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.
Which of the following is diamagnetic ?
CuCl2
NiCl2
FeCl3
Cu2Cl2
What are constituents of 'Mischmetal'?
La, Fe
La, Ce
Fe, Ce
Ce, Cu
Lanthanum the first element of lanthanide series has :
only unfilled 3d orbitals
unfilled 3d and 4d orbitals
unfilled 4d and 4forbitals
unfilled 4f and 5d orbitals
