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प्रश्न
Give two tests for a reducing agent.
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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.
APPEARS IN
संबंधित प्रश्न
In the following reaction between lead sulphide and hydrogen peroxide:
\[\ce{PbS_{(s)} + 4H2O2_{(aq)} -> PbSO4_{(s)} + 4H2O_{(l)}}\]
- Which substance is reduced?
- Which substance is oxidised?
Define reduction.
MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
Identify from the reaction the reactants that undergo oxidation and reduction.
\[\ce{NiO + H2 -> Ni + H2O}\]
The process of reduction involves ____________.
When Ag is exposed to air it gets a black coating of ____________.
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
The temperature of the reaction mixture rises when aluminium (Al) is added.
Explain this observation giving suitable reason.
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
The reaction of sodium metal is found to be highly explosive
Explain this observation giving suitable reason.
Choose the odd one out and write the reason:
