Q. No.Which of the following statements is true?
1 SO2 bleaches by reduction.
2 Cl2 bleaches by oxidation.
3 O3 bleaches by oxidation.
4 All of the above.
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 86%
From NCERT
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Hl cannot be prepared by the action of Kl and H2SO4 because
1. Hl is a much weaker acid than H2SO4
2. Hl gets oxidized by H2SO4 to form l2
3. H2SO4 is a dehydrating reagent.
4. Hl is less volatile than H2SO4
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 82%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | NaCl reacts with concentrated H2SO4 to give colourless fumes with a pungent smell. But on adding MnO2, the fumes become greenish-yellow |
| Reason (R): | MnO2 oxidizes HCl to chlorine gas which is greenish-yellow. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 85%
From NCERT
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Incorrect order among the following is:
| 1. | F2 > Cl2 > Br2 > I2 | Oxidising power |
| 2. | F < Cl > Br > I | Electron gain enthalpy |
| 3. | F2 > Cl2 > Br2 > I2 | Bond dissociation energy |
| 4. | F> Cl > Br > I | Electronegativity |
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 78%
From NCERT
AIPMT - 2008
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The correct order of the bond dissociation enthalpy of halogen molecules is:
1. Cl2 > Br2 > F2 > l2
2. Br2 > l2 > F2 > Cl2
3. F2 > Cl2 > Br2 > l2
4. l2 > Br2 > Cl2 > F2
1. Cl2 > Br2 > F2 > l2
2. Br2 > l2 > F2 > Cl2
3. F2 > Cl2 > Br2 > l2
4. l2 > Br2 > Cl2 > F2
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 78%
From NCERT
NEET - 2016
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Subtopic: Â Group 17 - Preparation, Properties & Uses |
 71%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The atomic size of F is smaller than that of Cl. |
| Reason (R): | F-F bond is stronger than the Cl-Cl bond. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 65%
From NCERT
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Subtopic: Â Group 17 - Preparation, Properties & Uses |
 57%
From NCERT
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What order does the stability of interhalogen compounds follow?
1. IF3 > BrF3 > CIF3
2. BrF3 > IF3 > ClF3
3. ClF3 > BrF3 > IF3
4. ClF3 > IF3 > BrF3
Subtopic: Â Group 17 - Preparation, Properties & Uses |
 57%
From NCERT
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Why does fluorine not produce oxyacids?
1. It is most electronegative
2. It is the most powerful oxidising agent
3. It has vacant d- orbitals
4. None of the above
Subtopic: Â Group 17 - Preparation, Properties & Uses |Â Group 16 - Preparation, Properties & Uses |
 55%
From NCERT
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