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प्रश्न
Give two tests for a reducing agent.
उत्तर
Test For A Reducing Agent :
- When the reducing agent is warmed with `"HNO"_3`, BROWN FUMES of `"NO"_2` are given out.
- Reducing agent decolourises the pink colour of `("KMnO"_4)` dil. potassium permanganate solution.
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संबंधित प्रश्न
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A shiny brown-coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black-colored compound formed.
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MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
Reacting with water, an active metal produces
Complete and balance the following equation:
CuO +__________→ Cu +___________
Identify the oxidising agent (oxidant) in the following reactions
`"CuSO"_4 + "Zn" -> "Cu" + "ZnSO"_4`
The tarnishing of metals is due to the formation of ______.
State whether the given chemical reaction is a redox reaction or not. Justify your answer.
\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]
