- 1(current)
Q. No.Which of the following accounts for the highly negative electron gain enthalpy of halogens in their respective periods of the periodic table?
1. It has smallest size and high effective nuclear charge
2. It has the largest size in in the respective periods
3. It is a strong reducing agent
4. None of the above
Subtopic: Group 17 - Preparation, Properties & Uses |
89%
Level 1: 80%+
Hints
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%
Level 2: 60%+
Hints
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 possess d-orbitals and can expand their octet to exhibit higher oxidation states |
Choose the correct option:
| 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%
Level 1: 80%+
Hints
The incorrect statement among the following is-
| 1. | Cl2 reaction with hot and concentrated NaOH produces NaCl andNaClO3. |
| 2. | Cl2 reaction with hot and concentrated NaOH produces NaCl and NaOCl. |
| 3. | It is an example of disproportionation reaction. |
| 4. | Chlorine from zero oxidation state is changed to –1 and +5 oxidation states. |
Subtopic: Group 17 - Preparation, Properties & Uses |
78%
Level 2: 60%+
Hints
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
HCl reacts with finely powdered iron, it forms ferrous chloride and not ferric chloride because:
| 1. | Formation of Cl2 gas prevents ferric chloride formation |
| 2. | Formation of H2 gas prevents ferric chloride formation |
| 3. | Formation of [FeCl6]4- prevent ferric chloride formation |
| 4. | Formation of Fe3H prevents ferric chloride formation |
Subtopic: Group 17 - Preparation, Properties & Uses |
59%
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.