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Q. No.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.
Subtopic: Group 15 - Preparation, Properties & Uses |
84%
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.
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 |
79%
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 |
87%
From NCERT
NEET - 2024
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Match List-I with List-II:
Identify the correct answer from the option given below:
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
| 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 |
Identify the correct answer from the option given below:
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 |
90%
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 |
69%
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 |
75%
From NCERT
NEET - 2024
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Subtopic: Group 16 - Preparation, Properties & Uses |
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From NCERT
NEET - 2024
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Match the Oxoacids of Sulphur given in List I with the number of bond 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 |
70%
From NCERT
NEET - 2023
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Fluorine is a stronger oxidizing agent than chlorine because:
Choose the most appropriate answer from the options given :
| (a) | F–F bond has a low enthalpy of dissociation. |
| (b) | Flouride ion (F–) has high hydration enthalpy. |
| (c) | Electron gain enthalpy of fluorine is less negative than chlorine. |
| (d) | Fluorine has a very small size. |
| 1. | (a) and (b) only | 2. | (a) and (c) only |
| 3. | (a) and (d) only | 4. | (b) and (c) only |
Subtopic: Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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The reaction that is a part of large scale industrial preparation of nitric acid is:
| 1. | \(\mathrm{NaNO}_3+\mathrm{H}_2 \mathrm{SO}_4\xrightarrow[500~K, \ 9\text{ bar}]{Pt} \mathrm{NaHSO}_4+\mathrm{HNO}_3\) |
| 2. | \(4 \mathrm{NH}_3+5 \mathrm{O}_2 \text{(from air)}\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{NO}+6 \mathrm{H}_2 \mathrm{O}\) |
| 3. | \(4 \mathrm{HPO}_3+2 \mathrm{~N}_2 \mathrm{O}_5\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{P}_4 \mathrm{O}_{10}\) |
| 4. | \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O} \\ \xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{Cu}\) |
Subtopic: Group 15 - Preparation, Properties & Uses |
61%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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NEET 2025 - Target Batch
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