The oxidation states of S atoms in S₄O₆²⁻ from left to right respectively
Options
(a) 6,0,0,6 (b) 3,1,1,3 (c) 5,0,0,5 (d) 4,1,1,4
Correct Answer:
5,0,0,5
Explanation:
No explanation available. Be the first to […]
Oxidation state of Fe in Mohr’s salt is
Options
(a) 1 (b) 2 (c) 3 (d) 4
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the explanation for this […]
An example of redox reaction
Options
(a) AgNO₃ + NaCl → AgCl + NaNO₃ (b) CuSO₄ + 4NH₃ → Cu(NH₃)₄ SO₄ (c) H₂ + Cl₂ → 2HCl (d) KNO₃ + NaCl → KCl […]
The number of electrons involved in the reduction of one nitrate ion to hydrazine is
Options
(a) 8 (b) 5 (c) 3 (d) 7
Correct Answer:
7
Explanation:
No explanation available. Be the […]
Which of the following is redox reaction
Options
(a) 2CuSO₄ + 4KI → Cu₂I₂ + 2K₂SO₄ + I₂ (b) SO₂ + H₂O → H₂SO₃ (c) Na₂SO₄ + BaCl₂ → [Cu(NH₃)₄]SO₄ (d) CuSO₄ + […]
What is the equivalent mass of IO₄⁻ when it is converted into I₂ in acid medium
Options
(a) M/6 (b) M/7 (c) M/5 (d) M/4
Correct Answer:
M/7
Explanation:
No explanation available. Be […]
In the conversion of Br₂ to BrO₃⁻, the oxidation number of Br changes from
Options
(a) zero to 5 (b) 1 to 5 (c) zero to -3 (d) 2 to 5
Correct Answer: […]
H₂O₂ reduces MnO₄⁻ ion to
Options
(a) Mn³⁺ (b) Mn²⁺ (c) Mn⁻ (d) Mn⁺
Correct Answer:
Mn²⁺
Explanation:
2MnO₄⁻ + 5H₂O₂ + 6H⁺ → 2Mn²⁺ + 8H₂O + 5O₂. Thus in this reaction, H₂O₂ […]
In which of the following compounds, carbon exhibits a valency of 4 but oxidation state -2
Options
(a) CH₃Cl (b) CHCl₃ (c) CH₂Cl₂ (d) HCHO
Correct Answer:
CH₃Cl
Explanation:
No explanation available. Be […]
During a redox titration involving a solution containing Fe²⁺ ions against MnO₄⁻ in the presence of excess of H⁺ ions, the number of electrons that get transferred is
Options
(a) 6 (b) 5 […]
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