Q. No.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 |
74%
From NCERT
NEET - 2022
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Given below are two statements:
| Assertion (A): | Fluorine exhibits only –1 oxidation state whereas other halogens exhibit + 1, + 3, + 5 and + 7 oxidation states. |
| Reason (R): | Other halogens have d orbitals and therefore, can expand their octets and show +1, +3, +5 and +7 oxidation states also. |
| 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: Group 17 - Preparation, Properties & Uses |
92%
From NCERT
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Given below are two statements:
| Assertion (A): | Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine. |
| Reason (R): | F2 has low enthalpy of dissociation and F– has high hydration enthalpy |
The correct option is-
| 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: Group 17 - Preparation, Properties & Uses |
77%
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: Group 17 - Preparation, Properties & Uses |
66%
From NCERT
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Select the correct option based on the 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: Group 17 - Preparation, Properties & Uses |
85%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | HI cannot be prepared by the reaction of KI with concentrated H2SO4. |
| Reason (R): | HI has the lowest H—X bond strength among halogen acids. |
| 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: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses |
51%
From NCERT
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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%
From NCERT
NEET - 2021
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Which of the following statements are correct?
| a. | Among halogens, the radius ratio between iodine and fluorine is maximum. |
| b. | Leaving F — F bond, all halogens have weaker X — X bond than X — X' bond in interhalogens. |
| c. | Among interhalogen compounds a maximum number of atoms are present in iodine fluoride. |
| d. | Interhalogen compounds are more reactive than halogen compounds. |
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)
Subtopic: Group 17 - Preparation, Properties & Uses |
68%
From NCERT
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Consider the following statements about halogens:
| (I) |
The bond dissociation energies for halogens are in the order: \(I_2< F_2< Br_2<Cl_2\) |
| (II) | The only oxidation state is -1. |
| (III) | The energy required for the excitation of electrons to the first excited state decreases progressively as we move from F to I. |
| (IV) | They form \(HX^-_2\) species in their aqueous solutions (X = halogen). |
Which of the following sets includes the correct statements?
1. I, II, IV
2. I, III, IV
3. II, III, IV
4. I, III
Subtopic: Group 17 - Preparation, Properties & Uses |
59%
From NCERT
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Match the substance given in Column I with the application given in Column II and mark the appropriate option:
| Column I (Substance) |
Column II (Application) |
||
| A. | Liquid helium | (i) | Chlorinating agent |
| B. | Argon | (ii) | Inert atmosphere (metallurgy) |
| C. | PCl5 | (iii) | Cryogenics |
| D. | P4O10 | (iv) | Dehydrating agent |
| A | B | C | D | |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iv) | (i) | (iii) |
Subtopic: Group 17 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
78%
From NCERT
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