- 1(current)
Q. No.Subtopic: f-Block Elements- Properties & Uses |
94%
Level 1: 80%+
Hints
Match the statement given in Column I with the corresponding element given in Column II and mark the appropriate choice.
1. (A) → (i), (B) → (ii), (C) → (iii), (D) → (iv)
2. (A) → (ii), (B) → (iii), (C) → (iv), (D) → (i)
3. (A) → (iv), (B) → (i), (C) → (ii), (D) → (iii)
4. (A) → (iii), (B) → (iv), (C) → (ii), (D) → (i)
| Column I | Column II | ||
| (A) | An element that can show +8 oxidation state | (i) | Ce |
| (B) | An element with +7 as the most stable oxidation state in its oxides | (ii) | Pm |
| (C) | Radioactive lanthanoid | (iii) | Os |
| (D) | Lanthanoid which shows +4 oxidation state | (iv) | Mn |
2. (A) → (ii), (B) → (iii), (C) → (iv), (D) → (i)
3. (A) → (iv), (B) → (i), (C) → (ii), (D) → (iii)
4. (A) → (iii), (B) → (iv), (C) → (ii), (D) → (i)
Subtopic: f-Block Elements- Properties & Uses |
91%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Because of lanthanoid contraction, which of the following pairs of elements have nearly
same atomic radii? (Numbers in the parenthesis are atomic numbers).
1. Ti (22) and Zr (40)
2. Zr (40) and Nb (41)
3. Zr (40) and Hf (72)
4. Zr (40) and Ta (73)
Subtopic: f-Block Elements- Properties & Uses | Lanthanoid & Actinoids Contraction |
91%
Level 1: 80%+
NEET - 2015
Hints
Match Column-I (alloy) with Column-II (composition) and mark the appropriate choice:
1. (A)→(iv),(B)→(i),(C)→(iii),(D)→(ii)
2. (A)→(ii),(B)→(iii),(C)→(iv),(D)→(i)
3. (A)→(iii),(B)→(ii),(C)→(i),(D)→(iv)
4. (A)→(i),(B)→(iii),(C)→(ii),(D)→(iv)
| Column-I | Column-II | ||
| (A) | Mischmetal | (i) | Alloy of Cu and Sn |
| (B) | Ziegler-Natta catalyst | (ii) | Alloy of lanthanoid metals |
| (C) | Brass | (iii) | \(\mathrm{TiCl}_4+\mathrm{Al}\left(\mathrm{CH}_3\right)_3\) |
| (D) | Bronze | (iv) | An alloy of Cu and Zn |
1. (A)→(iv),(B)→(i),(C)→(iii),(D)→(ii)
2. (A)→(ii),(B)→(iii),(C)→(iv),(D)→(i)
3. (A)→(iii),(B)→(ii),(C)→(i),(D)→(iv)
4. (A)→(i),(B)→(iii),(C)→(ii),(D)→(iv)
Subtopic: f-Block Elements- Properties & Uses |
89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following f-block elements is most stable in the bivalent oxidation state?
1. Sm
2. Eu
3. Tb
4. Ce
1. Sm
2. Eu
3. Tb
4. Ce
Subtopic: f-Block Elements- Properties & Uses |
77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the following statements
True statements among the following is /are:
1. I and III
2. II and III
3. II only
4. I and II
| I: | La(OH)3 is least basic among hydroxides of lanthanides. |
| II: | Zr4+ and Hf4+ possess almost the same ionic radii. |
| III: | Ce4+ can act as an oxidising agent. |
1. I and III
2. II and III
3. II only
4. I and II
Subtopic: f-Block Elements- Properties & Uses | Lanthanoid & Actinoids Contraction |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The correct electronic configuration and spin only magnetic moment (BM) of Gd3+ (Z = 64), respectively, are:
1. [Xe]5f7 and 8.9
2. [Xe]4f7 and 7.9
3. [Xe]5f7 and 7.9
4. [Xe]4f7 and 8.9
Subtopic: f-Block Elements- Properties & Uses |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The well known element of lanthanoid series that exhibit +4 oxidation state, is:
1. Ac
2. Ce
3. Eu
4. Yb
Subtopic: f-Block Elements- Properties & Uses |
83%
Level 1: 80%+
Hints
Strong reducing and oxidizing agents among the following options, respectively, are:
| 1. | Ce+3 & Ce+4 | 2. | Eu+2 & Ce+4 |
| 3. | Ce2+ & Tb+2 | 4. | Eu+4 & Eu+2 |
Subtopic: f-Block Elements- Properties & Uses |
83%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Actinoids exhibit more number of oxidation states than lanthanoids. It is because of:
| 1. | The greater metallic character of the lanthanoids than that of the corresponding actinoids. |
| 2. | More energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals. |
| 3. | The lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals. |
| 4. | More active nature of the actinoids. |
Subtopic: d-Block Elements- Properties & Uses | f-Block Elements- Properties & Uses | Lanthanoid & Actinoids Contraction |
80%
Level 1: 80%+
AIPMT - 2011
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.