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Q. No.Subtopic: Group 15 - Preparation, Properties & Uses |
Level 3: 35%-60%
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| Statement I: | Chlorine easily forms oxides and the compounds are explosive. |
| Statement II: | The higher oxidation states of chlorine, bromine, and iodine are released when halogens form oxides and fluorides. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Statement I is incorrect but 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%+
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Consider the following condition,
(i). X: Oxidation number of Br in bromic acid.
(ii). Y: Oxidation number of Br in perbromic acid.
The value of (X+Y) is:
1. 10
2. -1
3. 12
4. 8
(i). X: Oxidation number of Br in bromic acid.
(ii). Y: Oxidation number of Br in perbromic acid.
The value of (X+Y) is:
1. 10
2. -1
3. 12
4. 8
Subtopic: Group 17 - Preparation, Properties & Uses |
68%
Level 2: 60%+
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Chloride salt of M is treated with excess of AgNO3. It forms curdy white precipitate ‘A’. When ‘A’ is treated with NH4OH, it forms a soluble salt ‘B’. The A and B respectively are:
1. AgCl, [Ag(NH3)2]+
2. AgBr, [Ag(OH)2]−
3. AgCl, [Ag(OH)4]2−
4. AgBr, [Ag(OH)4]2−
1. AgCl, [Ag(NH3)2]+
2. AgBr, [Ag(OH)2]−
3. AgCl, [Ag(OH)4]2−
4. AgBr, [Ag(OH)4]2−
Subtopic: Group 15 - Preparation, Properties & Uses |
69%
Level 2: 60%+
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Identify the correct order of bond dissociation energy of halogens.
1. \(\mathrm{F}_2>\mathrm{Cl}_2 \)
2. \(\text Br_2>\text F_2 \)
3. \(\mathrm{I}_2>\mathrm{F}_2 \)
4. \(\mathrm{Br}_2>\mathrm{Cl}_2\)
1. \(\mathrm{F}_2>\mathrm{Cl}_2 \)
2. \(\text Br_2>\text F_2 \)
3. \(\mathrm{I}_2>\mathrm{F}_2 \)
4. \(\mathrm{Br}_2>\mathrm{Cl}_2\)
Subtopic: Group 17 - Preparation, Properties & Uses |
78%
Level 2: 60%+
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The correct decreasing order of positive electron gain enthalpy for the following inert gases is:
He, Ne, Kr, Xe
1. He > Ne > Kr > Xe
2. He > Ne > Xe > Kr
3. He > Xe > Ne > Kr
4. Ne > Kr > Xe > He
He, Ne, Kr, Xe
1. He > Ne > Kr > Xe
2. He > Ne > Xe > Kr
3. He > Xe > Ne > Kr
4. Ne > Kr > Xe > He
Subtopic: Group 18 - Preparation, Properties & Uses |
Level 3: 35%-60%
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Thionyl chloride on reaction with white phosphorous gives compound A.
A on hydrolysis gives compound B which is dibasic. Identify A and B:
A on hydrolysis gives compound B which is dibasic. Identify A and B:
| A | B | |
| 1 | PCl5 | H3PO2 |
| 2 | P4O6 | H3PO4 |
| 3 | POCl3 | H3PO4 |
| 4 | PCl3 | H3PO3 |
Subtopic: Group 15 - Preparation, Properties & Uses |
70%
Level 2: 60%+
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Subtopic: Group 17 - Preparation, Properties & Uses |
73%
Level 2: 60%+
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Select the incorrect option regarding the test of \(NO_{3}^{-}\) radical:
| 1. | A nitrosyl complex is formed. |
| 2. | A brown ring is obtained in the brown ring test at the junction of the two liquids. |
| 3. | The formula of the brown ring is [Fe(H2O)5(NO)]SO4. |
| 4. | When concentrated H2SO4 is added to the nitrate salt, very light brown fumes appear. |
Subtopic: Group 15 - Preparation, Properties & Uses |
58%
Level 3: 35%-60%
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The correct order of melting point of the following compound is:
1. \(H_2O>H_2S>H_2Se>H_2Te \)
2. \(H_2O>H_2Te>H_2Se>H_2S \)
3. \(H_2Te>H_2Se>H_2S>H_2O \)
4. \(H_2Te>H_2O>H_2Se>H_2S \)
1. \(H_2O>H_2S>H_2Se>H_2Te \)
2. \(H_2O>H_2Te>H_2Se>H_2S \)
3. \(H_2Te>H_2Se>H_2S>H_2O \)
4. \(H_2Te>H_2O>H_2Se>H_2S \)
Subtopic: Group 16 - Preparation, Properties & Uses |
83%
Level 1: 80%+
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