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Q. No.Subtopic: Group 16 - Preparation, Properties & Uses |
83%
Level 1: 80%+
NEET - 2020
Hints
A compound 'X' upon reaction with produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of to give as one of the products. Predict the compound 'X'
1.
2.
3.
4.
Subtopic: Group 15 - Preparation, Properties & Uses |
74%
Level 2: 60%+
NEET - 2019
Hints
Which one of the following reactions does not come under hydrolysis type reaction?
| 1. | \(\mathrm{S i C l_{4 \left( l \right)} + 2 H_{2} O_{\left( l \right)} \rightarrow S i O_{2 \left( s \right)} + 4 H C l_{\left( a q \right)}}\) |
| 2. | \(\mathrm{L i_{3} N_{\left( s \right)} + 2 H_{2} O_{\left( l \right)} \rightarrow N H_{3 \left( g \right)} + 3 L i O H_{\left( a q \right)}}\) |
| 3. | \(\mathrm{2 F_{2 \left( g \right)} + 2 H_{2} O_{\left( l \right)} \rightarrow 4 H F_{\left( a q \right)} + O_{2 \left( g \right)}}\) |
| 4. | \(\mathrm{P_{4} O_{10 \left( s \right)} + 6 H_{2} O_{\left( l \right)} \rightarrow 4 H_{3} P O_{4 \left( a q \right)}}\) |
Subtopic: Group 15 - Preparation, Properties & Uses |
50%
Level 3: 35%-60%
NEET - 2020
Hints
Identify the correct formula of 'oleum' from the following
| 1. | H2S2O7 | 2. | H2SO3 |
| 3. | H2SO4 | 4. | H2S2O8 |
Subtopic: Group 16 - Preparation, Properties & Uses |
86%
Level 1: 80%+
NEET - 2019
Hints
Among the following oxoacids of phosphorus, the strongest reducing property is for:
1. H4P2O7
2. H3PO3
3. H3PO2
4. H3PO4
1. H4P2O7
2. H3PO3
3. H3PO2
4. H3PO4
Subtopic: Group 15 - Preparation, Properties & Uses |
66%
Level 2: 60%+
NEET - 2019
Hints
In the light of the below statements, choose the correct answer from the options given below:
| Statement I: | Acid strength increases in the order given as HF < HCl < HBr < HI. |
| Statement II: | As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Statement I is incorrect and Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Group 17 - Preparation, Properties & Uses |
81%
Level 1: 80%+
NEET - 2021
Hints
Choose the incorrect statement among the following regarding noble gases:
| 1. | Noble gases have weak dispersion forces. |
| 2. | Noble gases have large positive values of electron gain enthalpy. |
| 3. | Noble gases are sparingly soluble in water. |
| 4. | Noble gases have very high melting and boiling points. |
Subtopic: Group 18 - Preparation, Properties & Uses |
61%
Level 2: 60%+
NEET - 2021
Hints
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
| 1. | NH3 < PH3 < AsH3 < SbH3 | Increasing acidic character |
| 2. | CO2 < SiO2 < SnO2 < PbO2 | Increasing oxidizing power |
| 3. | HF < HCl < HBr < HI | Increasing acidic strength |
| 4. | H2O < H2S < H2Se < H2Te | Increasing pKa values |
Subtopic: Group 15 - Preparation, Properties & Uses |
66%
Level 2: 60%+
NEET - 2021
Hints
False statement regarding PCl5 is:
| 1. | PCl5 molecule is non-reactive. |
| 2. | Three equatorial P-Cl bonds make an angle of 120° with each other. |
| 3. | Two axial P-Cl bonds make an angle of 180° with each other. |
| 4. | Axial P-Cl bonds are longer than equatorial P-Cl bonds. |
Subtopic: Group 15 - Preparation, Properties & Uses |
76%
Level 2: 60%+
NEET - 2019
Hints
Links
Match the name of process given in Column-I with the name of compound given in Column-II and mark the correct option.
| Column-I | Column-II | ||
| (a) | Pure nitrogen | (i) | Chlorine |
| (b) | Haber process | (ii) | Sulphuric acid |
| (c) | Contact process | (iii) | Ammonia |
| (d) | Deacon's process | (iv) | Sodium azide or Barium azide |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (iii) | (iv) | (ii) | (i) |
Subtopic: Group 15 - Preparation, Properties & Uses |
87%
Level 1: 80%+
NEET - 2019
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