Hydrogen cannot be obtained by
Hydrogen cannot be obtained by
Options
(a) Mg + H₂SO₄ (b) Mg + H₂O (c) Zn + dil. H₂SO₄ (d) Zn + dil.HNO₃
Correct Answer:
Zn + dil.HNO₃
Explanation:
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Questions
Pure nascent hydrogen is based obtained by
Pure nascent hydrogen is based obtained by
Options
(a) Na and C₂H₅OH (b) Al and NaOH (c) Zn and dil.H₂SO₄ (d) all of these
Correct Answer:
Zn and dil.H₂SO₄
Explanation:
No explanation available. […]
when a manganous salt is fused with a mixture of KNO₃ and solid NaOH
when a manganous salt is fused with a mixture of KNO₃ and solid NaOH the oxidation number of Mn changes from +2
Options
(a) 4 (b) 3 (c) 6 (d) 7
Correct Answer: […]
oxidation state of oxygen in F₂O is
oxidation state of oxygen in F₂O is
Options
(a) 2 (b) -2 (c) 1 (d) -1
Correct Answer:
2
Explanation:
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H₂S is not a
H₂S is not a
Options
(a) reducing agent (b) acidic (c) oxidising agent (d) none of these
Correct Answer:
oxidising agent
Explanation:
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Numbers of moles of K₂Cr₂O₇ reduced by one mole os Sn²⁺
Numbers of moles of K₂Cr₂O₇ reduced by one mole os Sn²⁺
Options
(a) ⁺1/3 (b) 3 (c) ⁺1/6 (d) 6
Correct Answer:
⁺1/3
Explanation:
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M⁺³ ion loses 3e⁻. Its oxidation number will be
M⁺³ ion loses 3e⁻. Its oxidation number will be
Options
(a) 0 (b) 3 (c) 6 (d) -3
Correct Answer:
6
Explanation:
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The equilibrium weight of MnSO₄ is M/2 when it changes into
The equilibrium weight of MnSO₄ is M/2 when it changes into
Options
(a) KMnO₄ (b) K₂MnO₄ (c) MnO₂ (d) MnO
Correct Answer:
MnO₂
Explanation:
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Which of the following acts as both reducing and oxidising agent
Which of the following acts as both reducing and oxidising agent
Options
(a) H₂SO₄ (b) H₂O₂ (c) KOH (d) KMnO₄
Correct Answer:
H₂O₂
Explanation:
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The oxidation number of As in H₂AsO₄⁻ is
The oxidation number of As in H₂AsO₄⁻ is
Options
(a) 6 (b) 5 (c) -7 (d) 9
Correct Answer:
5
Explanation:
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