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Recent questions tagged the d- and f- block elements
+3
votes
1
answer
When Cu^2+ ion is treated with KI, a white precipitate is formed. Explain the reaction with the help of chemical equation.
asked
Apr 5, 2019
in
Class 12
by
kratos
neet
salt
cbse
jee
aiims
the d- and f- block elements
jee mains
class-12
qualitative analysis
+1
vote
1
answer
Name some biological catalysts and mention their uses
asked
Apr 4, 2019
in
Chemistry
by
kratos
cbse
life processes
surface chemistry
the d- and f- block elements
class-9
its applications
biotechnology
class-12
+2
votes
1
answer
Complete the following reactions-
asked
Apr 4, 2019
in
Class 12
by
kratos
the d- and f- block elements
class-12
cbse
+1
vote
1
answer
Among lanthanoids, Ln (III) compounds are predominant. However occasionally in solutions or in solid
asked
Apr 3, 2019
in
Class 12
by
kratos
neet
cbse
aiims
the d- and f- block elements
class-12
+1
vote
1
answer
Describe the oxidising action of potassium dichromate
asked
Apr 2, 2019
in
Class 12
by
kratos
the d- and f- block elements
d-and f- block elements
class-12
cbse
+1
vote
1
answer
The enthalpies of atomization of transition elements are quite high.
asked
Apr 1, 2019
in
Class 12
by
kratos
the d- and f- block elements
d-and f- block elements
class-12
cbse
+1
vote
1
answer
Thermite is a mixture of iron oxide and
asked
Mar 30, 2019
in
Class 12
by
kratos
metals and nonmetals
neet
cbse
aiims
the d- and f- block elements
class-10
class-12
+1
vote
1
answer
Which ion is most stable in an aqueous solution?
asked
Mar 28, 2019
in
Class 12
by
kratos
neet
cbse
aiims
the d- and f- block elements
class-12
+2
votes
1
answer
Explain giving reason (a) The enthalpies of atomization of the transition metals are high
asked
Mar 24, 2019
in
Class 12
by
kratos
the d- and f- block elements
d-and f- block elements
class-12
cbse
+2
votes
1
answer
Transition metals can act as catalysts because these can change their oxidation state. How does Fe(III)
asked
Mar 24, 2019
in
Class 12
by
kratos
class-12
neet
the d- and f- block elements
cbse
aiims
+2
votes
1
answer
Why is Na2Cr2O7 not used in volumetric analysis?
asked
Mar 24, 2019
in
Class 12
by
kratos
d-and f- block elements
neet
coordination
aiims
jee
the d- and f- block elements
transition and inner transition elements
jee mains
class-12
+3
votes
1
answer
On the basis of Lanthanoid contraction, Radii of 4d and 5d block elements.
asked
Mar 21, 2019
in
Class 12
by
kratos
the d- and f- block elements
class-12
cbse
+1
vote
1
answer
Tertiary butane gets oxidised with oxidising agents like alkaline KMNO4 to
asked
Mar 21, 2019
in
Class 12
by
kratos
carboxylic acids
aldehydes
cbse
ketones
the d- and f- block elements
class-10
carbon and its compounds
class-12
+3
votes
1
answer
Assertion : Actinoids form relatively less stable complexes as compared to lanthanoids.
asked
Mar 20, 2019
in
Class 12
by
kratos
neet
cbse
aiims
the d- and f- block elements
class-12
+2
votes
1
answer
Which of the following oxidation state is common for all lanthanoids?
asked
Mar 18, 2019
in
Class 12
by
kratos
the d- and f- block elements
class-12
cbse
+2
votes
1
answer
Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids,
asked
Mar 17, 2019
in
Class 12
by
kratos
transition metals including lanthanides
d-and f- block elements
neet
cbse
jee
the d- and f- block elements
jee mains
coordinatian compounds
class-12
+2
votes
1
answer
Account for the following :
asked
Mar 16, 2019
in
Class 12
by
kratos
the d- and f- block elements
class-12
cbse
+2
votes
1
answer
Calculate emf of the cell: Zn(*)|Zn^2+(aq)||Cu^2+(aq)|Cu(*) if EZn^2+ = -0.76v ECu^2+ = +0.34v
asked
Mar 15, 2019
in
JEE
by
kratos
cbse
jee main 2020
class-11
the d- and f- block elements
redox reactions
class-12
+1
vote
1
answer
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice
asked
Mar 14, 2019
in
JEE
by
kratos
cbse
jee
the d- and f- block elements
solid state
jee mains
class-12
bitsat
+1
vote
1
answer
To protect iron against corrosion, the most durable metal plating on it, is (a) copper plating (b) zinc plating
asked
Mar 14, 2019
in
Class 12
by
kratos
nda
d-and f- block elements
neet
aiims
the d- and f- block elements
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