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 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 |
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 |
Codes
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 |
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 |
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. |
Assertion: Actinoids form relatively less stable complexes as compared to lanthanoids.
Reason: 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. |
Given below are two statements:
Assertion (A): | Cu cannot liberate hydrogen from acids. |
Reason (R): | Because it has positive electrode potential. |
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. |
Assertion (A): | The highest oxidation state of osmium is +8 . |
Reason (R): | Osmium is a 5d-block element. |
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 true but (R) is false. |
4. | Both (A) and (R) are false. |
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 |