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Q. No.Given below are two statements:
Assertion (A):
In the following chemical reaction between \(H_2S(g)\) and \(Cl_2(g)\), \(H_2S(g)\) is oxidized to \(S(s)\)
\(H_2S(g) +Cl_2(g) \rightarrow 2HCl(g) +S(s) \)
Reason (R):
Electropositive element, hydrogen has been removed from S.
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.
\(H_2S(g) +Cl_2(g) \rightarrow 2HCl(g) +S(s) \)
Subtopic: Redox Titration & Type of Redox |
82%
From NCERT
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Identify the correct statements:
In light of the above statements choose the correct answer from the options given below:
| Statement I: | KMnO4 acts as a self-indicator in a redox titration. |
| Statement II: | ClO3- does not show a disproportionation reaction. |
| 1. | Statement I is correct, and Statement II is incorrect. |
| 2. | Statement I is incorrect, and Statement II is correct. |
| 3. | Statement I is correct, and Statement II is correct. |
| 4. | Statement I is incorrect, and Statement II is incorrect. |
Subtopic: Redox Titration & Type of Redox |
76%
From NCERT
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Given below are two statements:
In light of the above statements choose the correct answer from the options given below:
| Statement I: | In oxygen difluoride (OF2) and dioxygen difluoride (O2F2), the oxidation state of oxygen is –2 and –1, respectively. |
| Statement II: | The liberation of iodine from the reaction of Cu2+ ions on iodide ions, gives an intense red colour to starch. |
In light of the above statements choose the correct answer from the options given below:
| 1. | Statement I is correct, and Statement II is correct. |
| 2. | Statement I is incorrect, and Statement II is correct. |
| 3. | Statement I is correct, and Statement II is incorrect. |
| 4. | Statement I is incorrect, and Statement II is incorrect. |
Subtopic: Introduction to Redox and Oxidation Number |
From NCERT
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Which species possesses an atom exhibiting an oxidation number of +3?
1. ClO2-
2. PO43-
3. S2O32-
4. NO2+
1. ClO2-
2. PO43-
3. S2O32-
4. NO2+
Subtopic: Introduction to Redox and Oxidation Number |
84%
From NCERT
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Which element is being reduced in the following equation?
\(\small{\begin{gathered} 3 \mathrm{Cu}(s)+8 \mathrm{HNO}_3(a q) \rightarrow 2 \mathrm{NO}(g)+3 \mathrm{Cu}\left(\mathrm{NO}_3\right)_2(a q)+4 \mathrm{H}_2 \mathrm{O}(l) \end{gathered}}\)
\(\small{\begin{gathered} 3 \mathrm{Cu}(s)+8 \mathrm{HNO}_3(a q) \rightarrow 2 \mathrm{NO}(g)+3 \mathrm{Cu}\left(\mathrm{NO}_3\right)_2(a q)+4 \mathrm{H}_2 \mathrm{O}(l) \end{gathered}}\)
| 1. | Cu | 2. | H |
| 3. | N | 4. | O |
Subtopic: Oxidizing & Reducing Agents |
85%
From NCERT
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The molar conductance of a solution, given its conductivity (0.248 S m–1) and concentration (0.2 mol m–3) is:
1. 0.124 S cm2 mol–1
2. 1.24 S m2 mol–1
3. 124 S cm2 mol–1
4. 124 S m2 mol–1
1. 0.124 S cm2 mol–1
2. 1.24 S m2 mol–1
3. 124 S cm2 mol–1
4. 124 S m2 mol–1
Subtopic: Conductance & Conductivity |
From NCERT
NEET - 2023
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
For the given redox reaction,
\(\mathrm{{a} {Cr}_2 {O}_7^{2-}+{bSO}_3^{2-}({aq})+{c} {H}^{+}({aq})} →\)
\(\mathrm{2 {a} {Cr}^{3+}({aq})+{bSO}_4^{2-}({aq})+\frac{{c}}{2} {H}_2 {O}(\ell)} \)
the coefficients a, b and c of a balanced equation are found to be, respectively:
1. 8, 1, 3
2. 1, 3, 8
3. 3, 8, 1
4. 1, 8, 3
\(\mathrm{{a} {Cr}_2 {O}_7^{2-}+{bSO}_3^{2-}({aq})+{c} {H}^{+}({aq})} →\)
\(\mathrm{2 {a} {Cr}^{3+}({aq})+{bSO}_4^{2-}({aq})+\frac{{c}}{2} {H}_2 {O}(\ell)} \)
the coefficients a, b and c of a balanced equation are found to be, respectively:
1. 8, 1, 3
2. 1, 3, 8
3. 3, 8, 1
4. 1, 8, 3
Subtopic: Balancing of Equations |
77%
From NCERT
NEET - 2023
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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NEET 2025 - Target Batch
Subtopic: Introduction to Redox and Oxidation Number |
83%
From NCERT
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The given-below reaction can be classified as:
\(2PbO + 4HNO_3 \rightarrow 2Pb(NO_3)_2 + 2H_2O\)
1. Combination reaction
2. Redox reaction
3. Acid-base reaction
4. Disproportion reaction
\(2PbO + 4HNO_3 \rightarrow 2Pb(NO_3)_2 + 2H_2O\)
1. Combination reaction
2. Redox reaction
3. Acid-base reaction
4. Disproportion reaction
Subtopic: Redox Titration & Type of Redox |
55%
From NCERT
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Identify the oxidant (O) and reductant (R) in the following reaction:
\(Pb_3O_4 + 8HCl \rightarrow 3PbCl_2 + Cl_2 + 4H_2O \)
1. \(\mathrm{{O}={PbO}}, \ \mathrm{{R}= {Cl}^{-}} \)
2. \(\mathrm{{O}={PbO}_2}, \ \mathrm{{R}= {PbO}} \)
3. \(\mathrm{{O}={PbO}}, \ \mathrm{{R}= {PbO}_2} \)
4. \(\mathrm{{O}={PbO}_2}, \ \mathrm{{R}= {Cl}^{-}}\)
\(Pb_3O_4 + 8HCl \rightarrow 3PbCl_2 + Cl_2 + 4H_2O \)
1. \(\mathrm{{O}={PbO}}, \ \mathrm{{R}= {Cl}^{-}} \)
2. \(\mathrm{{O}={PbO}_2}, \ \mathrm{{R}= {PbO}} \)
3. \(\mathrm{{O}={PbO}}, \ \mathrm{{R}= {PbO}_2} \)
4. \(\mathrm{{O}={PbO}_2}, \ \mathrm{{R}= {Cl}^{-}}\)
Subtopic: Oxidizing & Reducing Agents |
69%
From NCERT
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