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Q. No.Subtopic: Group 16 - Preparation, Properties & Uses |
66%
From NCERT
NEET - 2024
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Given below are two statements :
Statement I : The boiling point of hydrides of Group 16 elements follow the order
\(\text{H}_2 \text{O}>\text{H}_2 \text{Te}>\text{H}_2 \text{Se}>\text{H}_2 \text{S} .\)
Statement II : On the basis of molecular mass, H2O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H2O, it has higher boiling point.
In the light of the above statements, choose the correct answer from the options given below:
1. Both statement I and statement II are false.
2. Statement I is true and Statement II is false
3. Statement I is false but Statement II is true.
4. Both Statement I and Statement II are true.
Statement I : The boiling point of hydrides of Group 16 elements follow the order
\(\text{H}_2 \text{O}>\text{H}_2 \text{Te}>\text{H}_2 \text{Se}>\text{H}_2 \text{S} .\)
Statement II : On the basis of molecular mass, H2O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H2O, it has higher boiling point.
In the light of the above statements, choose the correct answer from the options given below:
1. Both statement I and statement II are false.
2. Statement I is true and Statement II is false
3. Statement I is false but Statement II is true.
4. Both Statement I and Statement II are true.
Subtopic: Group 16 - Preparation, Properties & Uses |
67%
From NCERT
NEET - 2024
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The products A and B obtained in the following reactions, respectively, are
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
Subtopic: Group 15 - Preparation, Properties & Uses |
63%
From NCERT
NEET - 2024
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Match List-I with List-II:
Identify the correct answer from the option given below:
| List-I (Atom/Molecule) |
List-II (Property) |
||
| A. | Nitrogen | I. | Paramagnetic |
| B. | Fluorine molecule | II. | Most reactive element in group 18 |
| C. | Oxygen molecule | III. | Element with highest ionisation enthalpy in group 15 |
| D. | Xenon atom | IV. | Strongest oxidising agent |
| 1. | A- III, B-I, C-IV, D-II | 2. | A-I, B-IV, C-III, D-II |
| 3. | A-II, B-IV, C-I, D-II | 4. | A-III, B-IV, C-I, D-II |
Subtopic: Group 18 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
78%
From NCERT
NEET - 2024
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Identify the incorrect statement about \(\mathrm{PCl_5}\).
1. \(\mathrm{PCl_5}\) possesses two different \(\mathrm{Cl-P-Cl}\) bond angles.
2. All five \(\mathrm{P-Cl}\) bonds are identical in length.
3. \(\mathrm{PCl_5}\) exhibits sp3d hybridisation.
4. \(\mathrm{PCl_5}\) consists of five \(\mathrm{P-Cl}\) (sigma) bonds.
1. \(\mathrm{PCl_5}\) possesses two different \(\mathrm{Cl-P-Cl}\) bond angles.
2. All five \(\mathrm{P-Cl}\) bonds are identical in length.
3. \(\mathrm{PCl_5}\) exhibits sp3d hybridisation.
4. \(\mathrm{PCl_5}\) consists of five \(\mathrm{P-Cl}\) (sigma) bonds.
Subtopic: Group 15 - Preparation, Properties & Uses |
77%
From NCERT
NEET - 2024
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Identify the incorrect statement from the following:
| 1. | The acidic strength of HX (X=F, Cl, Br and I) follows the order: HF > HCI > HBr >HI |
| 2. | Fluorine exhibits - 1 oxidation state whereas other halogens exhibit +1, +3, +5 and +7 oxidation states also. |
| 3. | The enthalpy of dissociation of F2 is smaller than that of Cl2. |
| 4. | Fluorine is stronger oxidising agent than chlorine. |
Subtopic: Group 17 - Preparation, Properties & Uses |
68%
From NCERT
NEET - 2024
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Identify the incorrect statement.
1. \(\mathrm{PEt}_3\) and \(\mathrm{Asph}_3\) as ligands can form \(\mathrm{d} \pi-\mathrm{d} \pi\) bone with transition metals.
2. The \(\mathrm{N}-\mathrm{N}\) single bond is as strong as the \(\mathrm{P}-\mathrm{P}\) single bond.
3. Nitrogen has unique ability to form \(\mathrm{p \pi-p \pi}\) multiple bonds with nitrogen, carbon and oxygen.
4. Nitrogen cannot form \(\mathrm{d} \pi-\mathrm{p} \pi\) bond as other heavier elements of its group.
1. \(\mathrm{PEt}_3\) and \(\mathrm{Asph}_3\) as ligands can form \(\mathrm{d} \pi-\mathrm{d} \pi\) bone with transition metals.
2. The \(\mathrm{N}-\mathrm{N}\) single bond is as strong as the \(\mathrm{P}-\mathrm{P}\) single bond.
3. Nitrogen has unique ability to form \(\mathrm{p \pi-p \pi}\) multiple bonds with nitrogen, carbon and oxygen.
4. Nitrogen cannot form \(\mathrm{d} \pi-\mathrm{p} \pi\) bond as other heavier elements of its group.
Subtopic: Group 15 - Preparation, Properties & Uses |
77%
From NCERT
NEET - 2024
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Match the Oxoacids of Sulphur given in List I with the number of bonds given in List II and mark the correct option.
Choose the correct answer from the options given below:
| List-I (Oxoacids of Sulphur) |
List-II (Bonds) |
||
| A. | Peroxodisulphuric acid | I. | Two S-OH, Four S=O, One S-O-S |
| B. | Sulphuric acid | II. | Two S-OH, One S=O |
| C. | Pyrosulphuric acid | III. | Two S-OH, Four S=O, One S-O-O-S |
| D. | Sulphurous acid | IV. | Two S-OH, Two S=O |
| Options: | A | B | C | D |
| 1. | III | IV | II | I |
| 2. | I | III | II | IV |
| 3. | III | IV | I | II |
| 4. | I | III | IV | II |
Subtopic: Group 16 - Preparation, Properties & Uses |
71%
From NCERT
NEET - 2023
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Select the correct option based on the statements below:
| Assertion (A): | ICl is more reactive than I₂. |
| Reason (R): | I-Cl bond is weaker than I-I bond. |
| 1. | (A) is False but (R) is True. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
Subtopic: Group 17 - Preparation, Properties & Uses |
75%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
Hints
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NEET 2025 - Target Batch
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect
| Statement I: | The boiling points of the following hydrides of group 16 elements increase in the order \(\mathrm{H}_{2} \mathrm{O}<\mathrm{H}_{2} \mathrm{~S}<\mathrm{H}_{2} \mathrm{Se}<\mathrm{H}_{2} \mathrm{Te} \) |
| Statement II: | The boiling points of these hydrides increase with the increase in molar mass. |
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect
Subtopic: Group 16 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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