question_answer1)
What are transition metals. Why
are they called so?
question_answer2)
Write electronic configuration
of Cr and Cu.
question_answer3)
Zn, Cd and Hg are not regarded
as transition metals. Why?
question_answer4)
What is the lowest common
oxidation state of transition metals?
question_answer5)
Second ionisation enthalpy for
Cr and Cu is unusually high. Explain.
question_answer6)
In which compound transition
metals show very low oxidation states?
question_answer7)
Define diamagnetism and par magnetism.
question_answer8)
What is ferromagnetic substance?
Give one example.
question_answer9)
Write spin only formula for the
calculation of magnetic moment.
question_answer10)
Name the catalyst used in
contact process for the manufacture of sulphuric acid.
question_answer11)
Which catalyst is used in
Haber's process?
question_answer12)
In which reaction Ni is used as
a catalyst?.
question_answer13)
What are interstitial compounds?
question_answer14)
Name the catalyst which
catalyses reaction between iodide and per sulphate ions.
question_answer15)
What is an alloy ?
question_answer16)
Name an alloy of transition
metals with non-transition metals.
question_answer17)
Draw the structure of chromate
and dichromate ions.
question_answer18)
What happens when 
is heated?
question_answer19)
Draw the structure of manganate
and permanganate ions.
question_answer20)
What happens when potassium
permanganate is treated with oxalic acid?
question_answer22)
Explain why 
ion is stable in aqueous
solution ?
question_answer23)
What are inner transition metals
?
question_answer24)
What are lanthanoids?
question_answer25)
What are actinoids?
question_answer26)
How many orbitals are incomplete
in inner transition elements?
question_answer27)
What is lanthanoid contraction?
question_answer28)
The radii of transition metals
of 2nd series and 3rd series are very similar why?
question_answer29)
Atomic radii of Zr (160 pm) are
identical with the radii of Hf (159 pm) Why?
question_answer30)
Zr and Hf occur in nature
together why?
question_answer31)
Separation of Zr and Hf from a
mixture is difficult. Explain
question_answer33)
Name the lanthanoids which show
very low value of third ionisation enthalpy.
question_answer34)
What is mischmetal?
question_answer35)
What are the uses of mischmetal?
question_answer36)
Which compound is used as
phosphors in T.V. screens?
question_answer37)
Give one use of mixed oxides of
lanthanoids.
question_answer38)
Name the actinoid elements from
which electron starts filling 
sub-shell.
question_answer39)
Electronic configuration of
actinoids are irregular why?
question_answer40)
What is actinoid contraction ?
question_answer41)
What is the most common
oxidation state shown by actinoids?
question_answer42)
What is the maximum oxidation
state shown by actinoids?
question_answer43)
What is the highest oxidation
state shown by lanthanoids?
question_answer44)
What is the minimum oxidation
state shown by lanthanoids?
question_answer45)
Name the components of steel.
question_answer46)
Name the transition metal
compound used in pigment industry.
question_answer47)
Which compound of transition
metal is used in dry cell?
question_answer48)
Name the transition metals used
in battery industries.
question_answer49)
What are coinage metals? Why are
they called so?
question_answer50)
What is Ziegler-Natta catalyst?
question_answer51)
Name the compound used in Wacker
process of oxidation of ethyne to ethanol.
question_answer52)
hyne to ethanol.
question_answer53)
In which industry AgBr is used?
question_answer54)
Complexes of which transition
metal are useful in the polymerisation of alkynes?
question_answer55)
Transition metals have very high
melting points and boiling points why?
question_answer56)
Transition metals have very high
enthalpies of atomization, Why?
question_answer59)
Density of transition metals
increases from Ti to Cu.
question_answer60)
How do ionisation enthalpy
changes along a transition series?
question_answer61)
Transition metals show a great
variety of oxidation states. Explain.
question_answer62)
Explain why Cu has a positive 
value?
question_answer63)
The observed value for Mn, Ni and Zn are more
negative than expected. Explain.
question_answer64)
Transition metals show highest
oxidation state in fluorides and oxides. Why?
question_answer65)
is not knowa. Why ?
question_answer66)
compounds
undergo disproportionate reaction in aqueous solution. Why?
question_answer67)
ion is more stable than 
in aqueous solution. Why?
question_answer68)
What is the cause of
paramagnetism?
question_answer69)
Transition metal compounds are
generally coloured, why?
question_answer70)
Transition metals form a large
number of complex compounds. Give reasons.
question_answer71)
Transition metals and their
compounds act as catalyst. Why?
question_answer72)
Transition metals form alloys
readily. Why?
question_answer73)
What happens when dichromate ion
is dissolved in alkali?
question_answer74)
Give two reactions in which
potassium dichromate acts as oxidising agent.
question_answer75)
Write two important applications
of potassium dichromate.
question_answer76)
Give two uses of 
.
question_answer78)
How is potassium dichromate
prepared? Write equations
question_answer79)
How is potassium permanganate
prepared in laboratory
question_answer80)
How is potassium permanganate
manufactured in large scale?
question_answer82)
What are interstitial compounds?
What are their main characteristics.
question_answer83)
Explain, why the chemistry of
the actinoids is much men complicated?
question_answer84)
What is lanthanoid contraction?
What are the causes o lanthanoid contraction.
question_answer85)
Discuss the consequences of
lanthanoid contraction.
question_answer86)
Trivalent lanthanoid ions are
coloured. Why?
question_answer87)
Explain the cause of
paramagnetism in Lanthanoid ion;
question_answer89)
Actinoids show a greater range
of oxidation states. Explain
question_answer91)
Potassium dichromate is used as
primary standard volumetric analysis. Explain.
question_answer92)
Calculate equivalent mass of 
in acidic, basic an neutral medium.
question_answer93)
The lanthanides resemble one
another more closely. On reasons.
question_answer94)
Ce (IV) is a good analytical
reagent, why?
question_answer95)
Unlike 
orbitals
orbitals can take part in bond
formation Explain.
question_answer96)
Give reasons for the following. E°
value for 
is higher
than those of 
and
.
question_answer97)
What is the effect of change in
pH on a solution dichromate ion?
question_answer99) The
lowest oxidation state of manganese is basic while the highest is acidic.
question_answer101) Why
do transition metals form coloured complexes?
question_answer103) \[C{{e}^{4+}}\]
is used as an oxidising agent in volumetric analysis. Why?
question_answer104) \[Z{{n}^{2+}}\]
salts are white while \[C{{u}^{2+}}\] salts are blue.
question_answer105) \[Zr\]
and \[Hf\] have identical sizes.
question_answer106) Among
the lanthanoids, Ce (III) is easily oxidised to Ce (IV). Discuss.
question_answer111) Why
is chemistry of all lanthanoids identical?
question_answer113) Out
of \[F{{e}^{2+}}\] and \[F{{e}^{3+}}\] ions, which is more stable?
question_answer115) Why
is Cu (I) diamagnetic while Cu (II) is paramagnetic?
question_answer116) \[Z{{n}^{2+}}\]
salts are white while \[C{{u}^{2+}}\] salts are blue. Explain.
question_answer119)
Why
is ZnO yellow when hot and white when cold?
question_answer120) Transition
elements form a number of interstitial compounds. Explain.
question_answer121)
Chromium
is a typical hard metal while mercury is a liquid. Explain.
You need to login to perform this action.
You will be redirected in
3 sec
