Given below are two statements: 
Assertion (A): The hydrolysis of XeF6 is a redox reaction.
Reason (R): The hydrolysis products of XeF6 are XeOF4 and XeO2F2 
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 18 - Preparation, Properties & Uses |
 57%
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Assertion (A): Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.
Reason (R): The reaction between nitrogen and oxygen requires a high temperature.
 
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. Both (A) and (R) are False.
Subtopic:  Group 15 - Preparation, Properties & Uses |
 84%
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Given below are two statements: 

Assertion (A): Noble gases have very low boiling points.
Reason (R): Noble gases, being monoatomic, have no interatomic forces except weak dispersion forces.

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 18 - Preparation, Properties & Uses |
 83%
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Assertion (A): The elements of Group 18 are known as noble gases.
Reason (R): Group 18 elements are highly reactive.

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 18 - Preparation, Properties & Uses |
 87%
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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 |
 91%
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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%
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Given below are two statements: 

Assertion (A): Sulphur shows paramagnetic behaviour.
Reason (R): S2 does not contain unpaired electron.


 

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 16 - Preparation, Properties & Uses |
 71%
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Given below are two statements: 

Assertion (A): H2S is less acidic than H2Te.
Reason (R): The bond (E–H) dissociation enthalpy decreases down the group in Group 16 hydrides.


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 16 - Preparation, Properties & Uses |
 84%
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Given below are two statements: 

Assertion (A): Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the corresponding periods of group 15.
Reason (R): -Elements of Group 16 is more electronegative than elements of Group 15.
 
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 15 - Preparation, Properties & Uses |
 65%
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Given below are two statements: 

Assertion (A): H3PO2 is a reducing agent. 
Reason (R): All oxyacids of phosphorus that have P-H bonds act as strong reducing agents. H3PO2 has two P-H bonds hence, it acts as a strong reducing agent.

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 15 - Preparation, Properties & Uses |
 87%
From NCERT
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