Q. No.Match Column-I with Column-II and mark the most appropriate option:
| Column-I (Metal ion) |
Column-II (Spin magnetic moment) |
||
| A. | Co3+ | i. | √8 B.M. |
| B. | Cr3+ | ii. | √35 B.M. |
| C. | Fe3+ | iii. | √15 B.M. |
| D. | Ni2+ | iv. | √24 B.M. |
| A | B | C | D | |
| 1. | iv | iii | ii | i |
| 2. | i | ii | iii | iv |
| 3. | iv | i | ii | iii |
| 4. | iii | iv | i | ii |
Match the catalyst with the process:
| Catalyst | Process | ||
| (i) | \(V_2O_5\) | (a) | The oxidation of ethylene to ethanal |
| (ii) | \(TiCl_4 + Al(CH_3)_3\) | (b) | Polymerisation of alkynes |
| (iii) | \(PdCl_2\) | (c) | Oxidation of \(SO_2\) in the manufacture of \(H_2SO_4\) |
| (iv) | Nickel complexes | (d) | Polymerisation of ethylene |
Which of the following is the correct matching of Catalyst & Process?
| Options: | (i) | (ii) | (iii) | (iv) |
| 1. | c | d | a | b |
| 2. | a | b | c | d |
| 3. | a | c | b | d |
| 4. | c | a | d | b |
1. (i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)
2. (i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)
3. (i)-(a), (ii)-(n), (iii)-(b), (iv)-(d)
4. (i)-(c), (ii)-(a), (iii)-(d), (iv)-(b)
Four statements for Cr and Mn are given below:
| (I) | Cr2+ and Mn3+ have the same electronic configuration. |
| (II) | Cr2+ is a reducing agent while Mn3+ is an oxidizing agent. |
| (III) | Cr2+ is an oxidizing agent while Mn3+ is a reducing agent. |
| (IV) | Both Cr and Mn are oxidizing agents. |
The correct statements are
1. (I), (III),(IV)
2. (I) , (II)
3. (I), (II) and (IV)
4. (I), (IV)
Match the following characteristics to the appropriate metal:
| Column I - Aspects | Column II - Metal | ||
| (a) | The metal which reveals the maximum number of oxidation states | (i) | Scandium |
| (b) | The metal although placed in 3d block is considered not as a transition element | (ii) | Copper |
| (c) | The metal which does not exhibit variable oxidation states | (iii) | Manganese |
| (d) | The metal which in +1 oxidation state in aqueous solution undergoes disproportionation | (iv) | Zinc |
Select the correct option :
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (iv) | (ii) | (iii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (ii) | (iv) | (i) | (iii) |
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 |
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 |
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 |
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 |
| 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. |
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. |
© 2025 GoodEd Technologies Pvt. Ltd.