1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Choose the correct statement.
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
The concentration and percentage purity of Oxalic acid can be determined by titration with $\mathrm{KMnO}_4$ in presence of dil. $\mathrm{H}_2 \mathrm{SO}_4$. Instead of dil. $\mathrm{H}_2 \mathrm{SO}_4$, dil HCl cannot be used because
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following options represents the decreasing order of oxidation number of the central atom in:
$$\mathrm{Cr}_2 \mathrm{O}_7^{2-}, \mathrm{Cr} \mathrm{O}_2^{-}, \mathrm{MnO}_4^{-}, \mathrm{BrO}_3^{-}$$
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0
In the redox reaction between $$\mathrm{Cr}_2 \mathrm{O}_7^{2-} / \mathrm{H}^{+}$$ and sulphite ion, what is the number of moles of electrons involved in producing 3.0 moles of the oxidised product?
Questions Asked from Redox Reactions (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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