- 1(current)
Q. No.Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table because-
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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHCl 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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