Select Chapter Topics:
Q. No.Match Column I (Catalyst) with Column II (Process), and mark the appropriate option:
Column I - (Catalyst)
Column II - (Process)
A.
Ni in the presence of hydrogen
1.
Contact process
B.
Cu2Cl2
2.
Vegetable oil to ghee
C.
V2O5
3.
Sandmeyer reaction
D.
Finely divided iron
4.
Haber's process
5.
Decomposition of KClO3
Codes:
A
B
C
D
1.
3
4
2
5
2.
2
3
1
4
3.
5
4
3
2
4.
4
5
3
2
Subtopic: Ā d-Block Elements- Properties & Uses |
Ā 88%
Level 1: 80%+
Hints
Match Compound/element in Column-I with uses in Column-II and select the best match from the codes given:
| Column-I (Compound/element) |
Column-II (Uses) |
||
| A. | Lanthanoid oxide | I. | Petroleum cracking |
| B. | Lanthanoid | II. | Television screen |
| C. | Mischmetal | III. | Lanthanoid metal + iron |
| D. | Mixed oxides of lanthanoids are employed | IV. | Production of iron alloy |
| Options: | A | B | C | D |
| 1. | II | I | IV | III |
| 2. | I | II | III | IV |
| 3. | II | IV | III | I |
| 4. | IV | I | III | II |
Subtopic: Ā Lanthanoid & Actinoids Contraction |
Ā 56%
Level 3: 35%-60%
Hints
Match the properties given in Column I with uses given in Column II
| Column I-(Property) | Column II-(Metal) | ||
| A. | An element that can show +8 oxidation state | 1. | Mn |
| B. | 3d block element that can show up to +7 | 2. | Cr |
| C. | 3d block element with the highest melting point | 3. | Os |
| 4. | Fe | ||
| A | B | C | |
| 1. | 3 | 1 | 2 |
| 2. | 1 | 2 | 3 |
| 3. | 1 | 4 | 3 |
| 4. | 4 | 2 | 3 |
Subtopic: Ā d-Block Elements- Properties & Uses |
Ā 93%
Level 1: 80%+
Hints
Match the statements given in Column I with the oxidation states given in Column and mark the correct option.
| Column I | Column II | ||
| A. | Oxidation state of Mn in \(\mathrm{MnO}_2\) is | 1. | +2 |
| B. | Most stable oxidation state of Mn is | 2. | +3 |
| C. | Most stable oxidation state of Mn in oxides is | 3. | +4 |
| D. | Characteristic oxidation state of lanthanoids is | 4. | +5 |
| 5. | +7 |
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 5 | 2 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
Subtopic: Ā Lanthanoid & Actinoids Contraction |
Ā 88%
Level 1: 80%+
Hints
Unlock IMPORTANT QUESTION
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Match the solutions given in Column I with the colours given in Column II.
| Column I (Aqueous solution of salt) |
Column II (Colour) |
||
| A. | FeSO4 .7H2O | 1. | Green |
| B. | NiCl2 . 4H2O | 2. | Light pink |
| C. | MnCl2.4H2O | 3. | Blue |
| D. | CoCl2. 6H2O | 4. | Pale green |
| 5. | Pink |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 1 | 2 | 5 |
Subtopic: Ā d-Block Elements- Properties & Uses |
Level 3: 35%-60%
Hints
Match the property given in Column-I with the element given in Column-II.
|
Column-I (Property) |
Column-II (Element) |
||
| A. |
Lanthanoid which shows + 4 oxidation state |
1. |
Pm |
| B. |
Radioactive lanthanoid |
2. |
Ce |
| C. |
Lanthanoid which has 4 electronic configurations in +3 oxidation state |
3. |
Lu |
| D. |
Lanthanoid which has 4 electronic configurations in +3 oxidation state |
4. |
Gd |
| Options: | A | B | C | D |
| 1. | 2 | 4 | 1 | 3 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 2 | 1 | 4 | 3 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Ā f-Block Elements- Properties & Uses |
Ā 81%
Level 1: 80%+
Hints
Match the properties given in Column-I with the metals given in Column-II and mark the appropriate answer.
| Column-I (Property) | Column-II (Metal) | ||
| A. | Element with highest second ionisation enthalpy | i. | Co |
| B. | Element with highest third ionisation enthalpy | ii. | Cr |
| C. | M in \(\mathrm{M}(\mathrm{CO})_6\) is | iii. | Cu |
| D. | Element with highest heat of atomisation | iv. | Zn |
| v. | Ni |
1. A = v; B = ii; C = i; D = iv
2. A = iv; B = ii; C = i; D = v
3. A = iii; B = iv; C = ii; D = v
4. A = ii; B = iv; C = iii; D = v
Subtopic: Ā d-Block Elements- Properties & Uses |
Ā 60%
Level 2: 60%+
Hints
| Assertion (A): | \(Cu^{2+}\) iodide is not known. |
| Reason (R): | \(Cu^{2+}\) oxidises \(I^-\) to iodine. |
| 1. | Both (A) and (R) are True, and (R) is the correct explanation of the (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is not True but (R) is True. |
| 4. | Both (A) and (R) are False. |
Subtopic: Ā d-Block Elements- Properties & Uses |
Ā 73%
Level 2: 60%+
Hints
Given below are two statements:
| Assertion (A): | Separation of Zr and Hf is difficult. |
| Reason (R): | Because Zr and Hf lie in the same group of the periodic table. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is not true but (R) is true |
| 4. | Both (A) and (R) are false. |
Subtopic: Ā d-Block Elements- Properties & Uses |
Ā 67%
Level 2: 60%+
Hints
Given below are two statements:
| Assertion (A): | Actinoids form relatively less stable complexes as compared to lanthanoids. |
| Reason (R): | Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is not True but (R) is True. |
| 4. | Both (A) and (R) are False. |
Subtopic: Ā Lanthanoid & Actinoids Contraction |
Level 4: Below 35%
Hints
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