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प्रश्न
Name:
a liquid that is an oxidizing agent as well as a reducing agent.
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उत्तर
Water
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संबंधित प्रश्न
Define ‘redox reaction’. Give one example.
Identify the component oxidised in the following reaction:
H2S + Cl2 → S + 2HCl
Define oxidation in terms of gain or loss of hydrogen with one example.
The colours of aqueous solutions of CuSO4 and FeSO4 as observed in the laboratory are:
(A) pale green and light blue respectively
(B) light blue and dark green respectively
(C) dark blue and dark green respectively
(D) dark blue and pale green respectively
Explain the term reduction in term of addition and removal of oxygen/hydrogen with a suitable example.
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Oxidation means losing electrons then what is reduction?
\[\ce{MnO2 + 4HCl -> + 2H2O + Cl2}\]
Identify the substance oxidized in the above equation.
Which among the following are physical or chemical change?
Evaporation of petrol
A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.
- Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
- Name the black substance formed and give its chemical formula.
Choose the odd one out and write the reason:
