NEET-UG SERIES Chemistry
D And F Block Elements
43 previous year questions.
Volume: 43 Ques
Yield: High
High-Yield Trend
2
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2002 1
2001 Chapter Questions 43 MCQs
01
PYQ 1980
medium
chemistry ID: neet-ug-
In the following transition metals, the maximum number of oxidation states are exhibited by
1
chromium (Z = 24)
2
manganese (Z = 25)
3
iron (Z = 26)
4
titanium (Z = 22)
02
PYQ 1988
medium
chemistry ID: neet-ug-
Hypo is used in photography to
1
reduce AgBr grains to metallic silver
2
convert metallic silver to silver salt
3
remove undecomposed silver bromide as a soluble complex
4
remove reduced silver
03
PYQ 1989
medium
chemistry ID: neet-ug-
Photographic plates and films have an essential ingredient of
1
silver nitrate
2
silver bromide
3
sodium chloride
4
oleic acid
04
PYQ 1991
medium
chemistry ID: neet-ug-
The transition elements have a general electronic configuration.
1
2
3
4
05
PYQ 1991
medium
chemistry ID: neet-ug-
Cinnabar is an ore of
1
Hg
2
Cu
3
Pb
4
Zn
06
PYQ 1993
medium
chemistry ID: neet-ug-
When is electrolysed using platinum electrodes?
1
Copper is liberated at cathode, sulphur at anode
2
Copper is liberated at cathode, oxygen at anode
3
Sulphur is liberated at cathode, oxygen at anode
4
Oxygen is liberated at cathode, copper at anode
07
PYQ 1994
easy
chemistry ID: neet-ug-
Among the lanthanides, the one obtained by synthetic method is
1
Lu
2
Pm
3
Pr
4
Gd
08
PYQ 1996
medium
chemistry ID: neet-ug-
Cuprous compounds such as and are the only salts stable in due to
1
high hydration energy of ions
2
their inherent tendency not to disproportionate
3
diamagnetic nature
4
insolubility in water
09
PYQ 1997
medium
chemistry ID: neet-ug-
The electronic configuration of gadolinium (at. no. = 64) is
1
2
3
4
10
PYQ 1998
medium
chemistry ID: neet-ug-
Which one of the following elements constitutes a major impurity in pig iron?
1
Silicon
2
Oxygen
3
Sulphur
4
Graphite
11
PYQ 1999
easy
chemistry ID: neet-ug-
Which of the following configuration is correct for iron?
1
2
3
4
12
PYQ 1999
medium
chemistry ID: neet-ug-
Bell-metal is an alloy of
1
Cu + Pb
2
Cu + Sn
3
Cu + Zn
4
Cu + Ni
13
PYQ 2000
medium
chemistry ID: neet-ug-
Which ion is colourless:
1
2
3
4
14
PYQ 2001
medium
chemistry ID: neet-ug-
Which of the following statement is not correct
1
La(OH)3 is less basic than Lu(OH)3
2
) In Lanthanide series ionic radius of Ln^+3 ions decreases
3
La is actually an element of transition series rather Lanthanide
4
Aomic radius of Zr and Hf are same because of Lanthanide contraction
15
PYQ 2002
medium
chemistry ID: neet-ug-
An atom has electronic configuration , you will place it in which group : -
1
fifth
2
fifteenth
3
second
4
third
16
PYQ 2002
medium
chemistry ID: neet-ug-
Zn gives gas with and HCI but not with because :-
1
act as oxidising agent when react with
2
is weaker acid than & HCI
3
In electrochemical series Zn is placed above hydrogen
4
is reduced in preference to hydronium ion
17
PYQ 2005
medium
chemistry ID: neet-ug-
The aqueous solution containing which one of the following ions will be colourless?(Atomic no: Sc=21, Fe=26, Ti=22, Mn=25)
1
Sc3+
2
Fe2+
3
Ti3+
4
Mn2+
18
PYQ 2005
medium
chemistry ID: neet-ug-
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?
1
Vanadium (Z=23)
2
Chromium (Z=24)
3
Iron (Z=26)
4
Manganese (Z=25)
19
PYQ 2005
easy
chemistry ID: neet-ug-
The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides, is :
1
lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals
2
larger atomic size of actinides than the lanthanides
3
more energy difference between 5f and 6d orbitals than between 4f and 5d orbitals
4
greater reactive nature of the actinides than the lanthanides
20
PYQ 2006
easy
chemistry ID: neet-ug-
More number of oxidation states are exhibited by the actinides than by the lanthanides. The main reason for this is:
1
more energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
2
lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
3
greater metallic character of the lanthanides than that of the corresponding actinides
4
more active nature of the actinides
21
PYQ 2006
medium
chemistry ID: neet-ug-
In which of the following pairs are both the ions coloured in aqueous solution? (Atomic number: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)
1
Ni2+, Ti3+
2
Sc3+, Ti3+
3
Sc3+, Co2+
4
Ni2+, Cu+
22
PYQ 2006
medium
chemistry ID: neet-ug-
Copper sulphate dissolves in excess of KCN to give
1
2
3
4
23
PYQ 2008
medium
chemistry ID: neet-ug-
The correct order of decreasing second ionisation enthalpy of Ti(22), V(23), Cr(24) and Mn(25) is
1
Cr > Mn > V > Ti
2
V > Mn > Cr > Ti
3
Mn > Cr > Ti > V
4
Ti > V > Cr > Mn
24
PYQ 2009
easy
chemistry ID: neet-ug-
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
1
2
3
4
25
PYQ 2011
medium
chemistry ID: neet-ug-
Acidified solution turns green when is added to it. This is due to the formation of
1
2
3
4
26
PYQ 2011
easy
chemistry ID: neet-ug-
For the four successive transition elements and , the stability of oxidation state will be there in which of the following order? (At. no. )
1
Fe > Mn > Co > Cr
2
Co > Mn > Fe > C
3
Cr > Mn > Co > Fe
4
Mn > Fe > Cr > Co
27
PYQ 2012
medium
chemistry ID: neet-ug-
Which of the statements is not true?
1
On passing through acidified solution, a milky colour is observed
2
is preferred over in volumetric analysis
3
solution in acidic medium is orange
4
solution becomes yellow on increasing the pH beyond 7
28
PYQ 2013
medium
chemistry ID: neet-ug-
Sc(Z = 21) is a transition element but Zn (Z = 30) is not because :
1
Both and ions are colourless and form white compounds
2
In case of orbitals are partially filled but in these are filled
3
Last electron is assumed to be added to 4s level in case of Zn
4
Both Sc and Zn do not exhibit variable oxidation states
29
PYQ 2013
medium
chemistry ID: neet-ug-
Which of the following does not give oxygen on heating ?
1
2
3
4
30
PYQ 2013
medium
chemistry ID: neet-ug-
Identify the correct order of solubility in aqueous medium :
1
2
3
4
31
PYQ 2013
medium
chemistry ID: neet-ug-
Which of the following does not give oxygen on heating ?
1
2
3
4
32
PYQ 2013
medium
chemistry ID: neet-ug-
Which of the following statements about the interstitial compounds is incorrect ?
1
They have higher melting points than the pure metal
2
They retain metallic conductivity
3
They are chemically reactive
4
They are much harder than the pure metal
33
PYQ 2013
medium
chemistry ID: neet-ug-
Identify the correct order of solubility in aqueous medium :
1
2
3
4
34
PYQ 2015
medium
chemistry ID: neet-ug-
Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)
1
Zr(40) and Hf (72)
2
Zr (40) and Ta (73)
3
Ti (22) and Zr (40)
4
Zr (40) and Nb (41)
35
PYQ 2015
medium
chemistry ID: neet-ug-
Magnetic moment 2.84 B.M. is given by (At. nos, Ni=28, Ti=22, Cr=24, Co=27)
1
2
3
4
36
PYQ 2015
easy
chemistry ID: neet-ug-
Assuming complete ionization, same moles of which of the following compounds will require the least amount of acidified for complete oxidation ?
1
2
3
4
37
PYQ 2016
easy
chemistry ID: neet-ug-
The electronic configurations of Eu (Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are:
1
and
2
and
3
and
4
and
38
PYQ 2017
medium
chemistry ID: neet-ug-
and both when dissolved in water containing ions the pair of species formed is :
1
2
3
4
39
PYQ 2018
medium
chemistry ID: neet-ug-
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
| Column I | Column II | ||
|---|---|---|---|
| a. | i. | ||
| b. | 11. | ||
| c. | iii. | ||
| d | iv | ||
| v | |||
1
a - iii , b - v , c - i , d - ii
2
a - iv , b - v , c - ii , d - i
3
a - iv , b - i, c - ii , d - iii
4
a - i , b - ii , c - iii , d - iv
40
PYQ 2018
medium
chemistry ID: neet-ug-
Which one of the following ions exhibits transition and paramagnetism as well ?
1
2
3
4
41
PYQ 2019
medium
chemistry ID: neet-ug-
When neutral or faintly alkaline KMnO4 is treated with potassium iodide, iodide ion is converted into 'X'. 'X' is -
1
2
3
42
PYQ 2021
medium
chemistry ID: neet-ug-
Match List-I with List-II. Choose the correct answer from the options given below.
1
(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
2
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
3
(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
4
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
43
PYQ 2021
medium
chemistry ID: neet-ug-
Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of
1
having similar chemical properties
2
belonging to same group
3
diagonal relationship
4
lanthanoid contraction
About D And F Block Elements - NEET-UG
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