Match the Oxoacids of Sulphur given in column I with the number of bond given in column II and mark the correct option.
List-I(Oxoacids of Sulphur) List-II(Bonds)
A.  Peroxodisulphuric acid I. Two S-OH, Four S=O, One S-O-S
B. Sulphuric acid II. Two S-OH, One S=O
C. Pyrosulphuric acid III. Two S-OH, Four S=O, One S-O-O-S
D.  Sulphurous acid IV.  Two S-OH, Two S=O
Choose the correct answer from the options given below: 
Options: A B C D
1. III IV II I
2. I III II IV
3. III IV I II
4. I III IV II
Subtopic:  Group 16 - Preparation, Properties & Uses |
 69%
From NCERT
NEET - 2023
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Select the correct option based on the statements below:
 
Assertion (A): ICI 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:
Statement I: The boiling points of the following hydrides of group 16 elements increase in the order 
\(\mathrm{H}_{2} \mathrm{O}<\mathrm{H}_{2} \mathrm{~S}<\mathrm{H}_{2} \mathrm{Se}<\mathrm{H}_{2} \mathrm{Te} \)  
Statement II: The boiling points of these hydrides increase with the increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below:
1. I is incorrect but II is correct 
2. Both I and II are correct 
3. Both I and II are incorrect 
4. I is correct but II is incorrect
Subtopic:  Group 16 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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The correct order for boiling points of the following compounds is: 

1. AsH3 > PH3 > NH3 > SbH3 > BiH3
2. BiH3 > SbH3 > NH3 > AsH3 > PH3
3. NH3 > PH3 > AsH3 > SbH3 > BiH3
4. PH3 > NH3 > AsH3 > SbH3 > BiH3
Subtopic:  Group 15 - Preparation, Properties & Uses |
 62%
From NCERT
NEET - 2022
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Chlorine shows the bleaching action in the presence of moisture due to the formation of 
1. HOCl 
2. HOClO
3. H2O2
4. O

Subtopic:  Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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The reaction that is a part of large scale industrial preparation of nitric acid is: 
1. \(\mathrm{NaNO}_3+\mathrm{H}_2 \mathrm{SO}_4\xrightarrow[500~K, \ 9\text{ bar}]{Pt} \mathrm{NaHSO}_4+\mathrm{HNO}_3\)
2. \(4 \mathrm{NH}_3+5 \mathrm{O}_2 \text{(from air)}\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{NO}+6 \mathrm{H}_2 \mathrm{O}\)
3. \(4 \mathrm{HPO}_3+2 \mathrm{~N}_2 \mathrm{O}_5\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{P}_4 \mathrm{O}_{10}\)
4. \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O} \\ \xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{Cu}\)
Subtopic:  Group 15 - Preparation, Properties & Uses |
 62%
From NCERT
NEET - 2022
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Fluorine is a stronger oxidizing agent than chlorine because:
(a) F–F bond has a low enthalpy of dissociation.
(b) Flouride ion (F-) has high hydration enthalpy.
(c) Electron gain enthalpy of fluorine is less negative than chlorine.
(d) Fluorine has a very small size.
Choose the most appropriate answer from the options given :
1. (a) and (b) only 2. (a) and (c) only
3. (a) and (d) only 4. (b) and (c) only
Subtopic:  Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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In the light of the below statements, choose the correct answer from the options given below:
I: Acid strength increases in the order given as HF < HCl < HBr < HI.
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. I is correct but II is false.
2. I is incorrect but II is true.
3. Both I and II are true.
4. Both I and II are false.
Subtopic:  Group 17 - Preparation, Properties & Uses |
 78%
From NCERT
NEET - 2021
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Choose the incorrect statement among the following regarding noble gases.

1. Noble gases have weak dispersion forces.
2. Noble gases have large positive values of electron gain enthalpy.
3. Noble gases are sparingly soluble in water.
4. Noble gases have very high melting and boiling points.

Subtopic:  Group 18 - Preparation, Properties & Uses |
 58%
From NCERT
NEET - 2021
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In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?

1. NH< PH< AsH< SbH3 Increasing acidic character
2. CO< SiO< SnO< PbO2 Increasing oxidizing power
3. HF < HCl < HBr < HI Increasing acidic strength
4. H2O < H2S < H2Se < H2Te Increasing pKa values
Subtopic:  Group 15 - Preparation, Properties & Uses |
 63%
From NCERT
NEET - 2021
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