d and f Block Elements PYQs - Last 5 Years
JEE Main / Chemistry / Inorganic Chemistry / 134 recent questions
ChemistryInorganic Chemistry2022-2026
Practice 134 JEE Main Chemistry questions from d and f Block Elements. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2022-2026
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Last 5 Years d and f Block Elements Questions
Showing 34 of 134 filtered questions.
1D And F Block Elements
The pair of lanthanides in which both elements have high third - ionization energy is :
MCQ+4 / -12023
2D And F Block Elements
Given below are two statement: one is labelled as Assertion \(\mathbf{A}\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: \(5 \mathrm{f}\) electrons can participate in bonding to a far greater extent than \(4 \mathrm{f}\) e...
Assertion A: \(5 \mathrm{f}\) electrons can participate in bonding to a far greater extent than \(4 \mathrm{f}\) e...
MCQ+4 / -12023
3D And F Block Elements
Which of the following statements are correct?
(A) The M\(^{3+}\)/M\(^{2+}\) reduction potential for iron is greater than manganese.
(B) The higher oxidation states of first row d-block elements get stabilized by oxide ion.
(C) Aqueous solu...
(A) The M\(^{3+}\)/M\(^{2+}\) reduction potential for iron is greater than manganese.
(B) The higher oxidation states of first row d-block elements get stabilized by oxide ion.
(C) Aqueous solu...
MCQ+4 / -12023
4D And F Block Elements
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to :
MCQ+4 / -12023
5D And F Block Elements
An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese in higher oxidation state is _____________ B.M. (Nearest integer)
INTEGER+4 / -12022
6D And F Block Elements
The number of terminal oxygen atoms present in the product B obtained from the following reaction is _____________.
FeCr2O4 + Na2CO3 + O2 \(\to\) A + Fe2O3 + CO2
A + H+ \(\to\) B + H2O + Na+
FeCr2O4 + Na2CO3 + O2 \(\to\) A + Fe2O3 + CO2
A + H+ \(\to\) B + H2O + Na+
INTEGER+4 / -12022
7D And F Block Elements
The electronic configuration of Pt (atomic number 78) is :
MCQ+4 / -12022
8D And F Block Elements
For the reaction given below :
CoCl3 . xNH3 + AgNO3 (aq) \(\to\)
If two equivalents of AgCl precipitate out, then the value of x will be _____________.
CoCl3 . xNH3 + AgNO3 (aq) \(\to\)
If two equivalents of AgCl precipitate out, then the value of x will be _____________.
INTEGER+4 / -12022
9D And F Block Elements
Spin only magnetic moment of [MnBr6]4\(-\) is _________ B.M. (round off to the closest integer)
INTEGER+4 / -12022
10D And F Block Elements
In neutral or faintly alkaline medium, \(\mathrm{KMnO}_{4}\) being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be :
MCQ+4 / -12022
11D And F Block Elements
In following pairs, the one in which both transition metal ions are colourless is :
MCQ+4 / -12022
12D And F Block Elements
The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives :
MCQ+4 / -12022
13D And F Block Elements
Which of the following \(3\mathrm{d}\)-metal ion will give the lowest enthalpy of hydration \(\left(\Delta_{\text {hyd }} \mathrm{H}\right)\) when dissolved in water ?
MCQ+4 / -12022
14D And F Block Elements
Which one of the lanthanoids given below is the most stable in divalent form?
MCQ+4 / -12022
15D And F Block Elements
The disproportionation of \(\mathrm{MnO}_{4}^{2-}\) in acidic medium resulted in the formation of two manganese compounds \(\mathrm{A}\) and \(\mathrm{B}\). If the oxidation state of \(\mathrm{Mn}\) in \(\mathrm{B}\) is smaller than that of...
INTEGER+4 / -12022
16D And F Block Elements
Which of the following has least tendency to liberate \(\mathrm{H}_{2}\) from mineral acids?
MCQ+4 / -12022
17D And F Block Elements
Match List - I with List - II, match the gas evolved during each reaction.
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MCQ+4 / -12022
18D And F Block Elements
Which of the following pair is not isoelectronic species?
(At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
(At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
MCQM+4 / -12022
19D And F Block Elements
The number of statements correct from the following for Copper (at. no. 29) is/are ____________.
(A) Cu(II) complexes are always paramagnetic.
(B) Cu(I) complexes are generally colourless
(C) Cu(I) is easily oxidized
(D) In Fehling solution...
(A) Cu(II) complexes are always paramagnetic.
(B) Cu(I) complexes are generally colourless
(C) Cu(I) is easily oxidized
(D) In Fehling solution...
INTEGER+4 / -12022
20D And F Block Elements
The 'f' orbitals are half and completely filled, respectively in lanthanide ions :
[Given : Atomic no. Eu, 63; Sm, 62; Tm, 69; Tb, 65; Yb, 70; Dy, 66]
[Given : Atomic no. Eu, 63; Sm, 62; Tm, 69; Tb, 65; Yb, 70; Dy, 66]
MCQ+4 / -12022
21D And F Block Elements
The total number of \(\mathrm{Mn}=\mathrm{O}\) bonds in \(\mathrm{Mn}_{2} \mathrm{O}_{7}\) is __________.
MCQ+4 / -12022
22D And F Block Elements
Given below are two statements.
Statement I : Iron (III) catalyst, acidified \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) and neutral \(\mathrm{KMnO}_{4}\) have the ability to oxidise \(\mathrm{I}^{-}\) to \(\mathrm{I}_{2}\) independen...
Statement I : Iron (III) catalyst, acidified \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) and neutral \(\mathrm{KMnO}_{4}\) have the ability to oxidise \(\mathrm{I}^{-}\) to \(\mathrm{I}_{2}\) independen...
MCQ+4 / -12022
23D And F Block Elements
In neutral or alkaline solution, \(\mathrm{MnO}_{4}^{-}\) oxidises thiosulphate to :
MCQ+4 / -12022
24D And F Block Elements
The spin-only magnetic moment value of the most basic oxide of vanadium among V2O3, V2O4 and V2O5 is _____________ B.M. (Nearest integer)
INTEGER+4 / -12022
25D And F Block Elements
The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state?
MCQ+4 / -12022
26D And F Block Elements
The dark purple colour of \(\mathrm{KMnO}_{4}\) disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is :
MCQ+4 / -12022
27D And F Block Elements
The spin-only magnetic moment value of the compound with strongest oxidizing ability among \(\mathrm{MnF}_{4}, \mathrm{MnF}_{3}\) and \(\mathrm{MnF}_{2}\) is ____________ B.M. [nearest integer]
INTEGER+4 / -12022
28D And F Block Elements
Among the following, which is the strongest oxidizing agent?
MCQ+4 / -12022
29D And F Block Elements
Cerium (IV) has a noble gas configuration. Which of the following is correct statement about it?
MCQ+4 / -12022
30D And F Block Elements
The metal ion (in gaseous state) with lowest spin-only magnetic moment value is :
MCQ+4 / -12022
31D And F Block Elements
Among Co3+, Ti2+, V2+ and Cr2+ ions, one if used as a reagent cannot liberate H2 from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is ___________ B.M. (Nearest integer)
INTEGER+4 / -12022
32D And F Block Elements
The difference in oxidation state of chromium in chromate and dichromate salts is ___________.
INTEGER+4 / -12022
33D And F Block Elements
Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is ____________.
INTEGER+4 / -12022
34D And F Block Elements
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be :
MCQ+4 / -12022