Which pair of the following compounds has one lone pair of electrons on the central atom?
| 1. | \(\mathrm{SF}_4, \mathrm{BrF}_5\) | 2. | \(\mathrm{SF}_4, \mathrm{ClF}_3\) |
| 3. | \(\mathrm{ClF}_3, \mathrm{XeF}_4\) | 4. | \(\mathrm{XeF}_4, \mathrm{BrF}_5\) |
Subtopic: V.S.E.P.R & V.B.T |
82%
Level 1: 80%+
NEET - 2024
Hints
Match the equilibrium processes in List-I with their respective physical properties in List-II and choose the correct option:
Choose the correct answer from the options given below:
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
| List-I (Equilibrium Process) |
List-II (Physical Properties) |
||
| A. | \(Liquid \rightleftharpoons Vapour\) | I. | Melting point |
| B. | \(Solid \rightleftharpoons Liquid\) | II. | Boiling point |
| C. | \(Solid \rightleftharpoons Vapour\) | III. | Sublimation point |
| D. | \(\small {Solute (solid) \rightleftharpoons Solute (solution)}\) | IV. | Saturated solution |
| V. | Unsaturated solution |
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
Subtopic: Introduction & Colligative properties |
72%
Level 2: 60%+
NEET - 2024
Hints
Match the complex ions in List-I with their corresponding hybridization in List-II.
Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-III, B-I, C-IV, D-II
3. A-I, B-II, C-III, D-IV
4. A-III, B-IV, C-II, D-I
| List -I (Complex ion) |
List -II (Hybridisation) |
||
| A. | \([\mathrm{Ni}(\mathrm{CN})_4]^{2-}\) | I. | \(s p^3 \) |
| B. | \(\mathrm{[CoF_6}]^{3-}\) | II. | \( d^2sp^3 \) |
| C. | \([\mathrm{Co}(\mathrm{C}_2 \mathrm{O}_4)_3 ]^{3-}\) | III. | \(s p^3d^2\) |
| D. | \(\mathrm{[NiCl_4}]^{2-}\) | IV. | \(dsp^2\) |
Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-III, B-I, C-IV, D-II
3. A-I, B-II, C-III, D-IV
4. A-III, B-IV, C-II, D-I
Subtopic: VBT, CFT & their Limitations |
82%
Level 1: 80%+
NEET - 2024
Hints
Subtopic: Aldehydes & Ketones: Preparation & Properties |
73%
Level 2: 60%+
NEET - 2024
Hints
The common oxidation state shown by actinoids is +3 with the other oxidation states being +4, +3, +6, and +7. Rank the following elements in decreasing order of the number of oxidation states they display:
Choose the correct answer from the options given below:
| A. | \(Np(Z-93)\) | B. | \(Am(Z-95)\) |
| C. | \(Ac(Z-89)\) | D. | \(Pa(Z-91)\) |
Choose the correct answer from the options given below:
| 1. | A > B > D > C | 2. | A > B > C > D |
| 3. | B > A > D > C | 4. | D > B > A > C |
Subtopic: f-Block Elements- Properties & Uses |
54%
Level 3: 35%-60%
NEET - 2024
Hints
Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I (Amine) |
List-II \(\textbf{(pK}_{b} ~\textbf{value}) \) |
||
| A. | Benzenamine | I. | 3.38 |
| B. | Phenylmethanamine | II. | 9.38 |
| C. | Methenamine | III. | 4.70 |
| D. | N-Ethylethanamine | IV. | 3.0 |
| 1. | A-II, B-III, C-I, D-IV | 2. | A-III, B-II, C-I, D-IV |
| 3. | A-II, B-I, C-III, D-IV | 4. | A-I, B-III, C-II, D-IV |
Subtopic: Identification of Primary, Secondary & Tertiary Amines |
69%
Level 2: 60%+
NEET - 2024
Hints
Match the processes or properties in List-I with their corresponding characteristics in List-II.
Choose the correct answer from the options given below:
| List-I (Process/Property) |
List-II (Characteristic) |
||
| A. | Adiabatic process | I. | Independent of the amount of substance |
| B. | Reversible process | II. | The reaction can proceed in both directions, from reactants to products and vice versa |
| C. | Intensive property | III. | No transfer of heat between the system and the surrounding |
| D. | Extensive property | IV. | Dependent on the amount of substance |
| 1. | A-II, B-III, C-IV, D-I | 2. | A-I, B-II, C-IV, D-III |
| 3. | A-III, B-II, C-I, D-IV | 4. | A-I, B-II, C-III, D-IV |
Subtopic: Classification of System, Extensive & Intensive Properties |
92%
Level 1: 80%+
NEET - 2024
Hints
Which of the following pair of aqueous solutions will have the same value of osmotic pressure?
(Assume complete dissociation in aqueous solution)
1. \(0.1~ \mathrm{{M}~ {BaCl}_2} \text { and } 0.2 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
2. \(0.1~ \mathrm{{M}~ {Na}_3 {PO}_4} \text { and } 0.1 ~\mathrm{{M}~ {K}_2 {SO}_4}\)
3. \(0.2~ \mathrm{{M}~ {NaCl}} \text { and } 0.1 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
4. \(0.2 ~\mathrm{{M} ~{NaCl}} \text { and } 0.1~ \mathrm{{M} ~{K}_3\left[{Fe}({CN})_6\right]}\)
(Assume complete dissociation in aqueous solution)
1. \(0.1~ \mathrm{{M}~ {BaCl}_2} \text { and } 0.2 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
2. \(0.1~ \mathrm{{M}~ {Na}_3 {PO}_4} \text { and } 0.1 ~\mathrm{{M}~ {K}_2 {SO}_4}\)
3. \(0.2~ \mathrm{{M}~ {NaCl}} \text { and } 0.1 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
4. \(0.2 ~\mathrm{{M} ~{NaCl}} \text { and } 0.1~ \mathrm{{M} ~{K}_3\left[{Fe}({CN})_6\right]}\)
Subtopic: Osmosis & Osmotic Pressure |
69%
Level 2: 60%+
NEET - 2024
Hints
The correct 'spin only' magnetic moments of \([\text{CoF}_6]^{3-}\) and \(\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}\) respectively, are:
| 1. | 0 BM and 4.9 BM | 2. | 0 BM and 0 BM |
| 3. | 4.9 BM and 0 BM | 4. | 4.9 BM and 4.9 BM |
Subtopic: VBT, CFT & their Limitations |
70%
Level 2: 60%+
NEET - 2024
Hints
The behaviour of samarium (Z=62) is very much like europium (Z=63), since both elements:
| 1. | exhibit +2 and +3 oxidation states. |
| 2. | have \(4 f^5 6 s^2 \) and \(4 f^6 6 s^2\) electronic configurations, respectively. |
| 3. | have \(4 f^7 6 s^2\) and \(4 f^8 6 s^2\) electronic configurations, respectively. |
| 4. | have the same atomic radii. |
Subtopic: f-Block Elements- Properties & Uses |
54%
Level 3: 35%-60%
NEET - 2024
Hints
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