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प्रश्न
Fill in the blank
In redox reaction oxidation and reduction occur ............................
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उत्तर
In redox reaction oxidation and reduction occur simultaneously.
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संबंधित प्रश्न
Explain the following in term Oxidation of gain or loss of oxygen with two example.
Explain reduction in terms of gain or loss of oxygen with one example.
In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of:
(a) Cl2
(b) H2
(c) N2
(d) O2
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
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
In the reaction of iron with copper sulphate solution:
CuSO4 + Fe → Cu + FeSO4
Which option in the given table correctly represents the substance oxidized and the reducing agent?
| OPTION | Substance Oxidized | Reducing Agent |
| A | Fe | Fe |
| B | Fe | FeSO4 |
| C | Cu | Fe |
| D | CuSO4 | Fe |
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.
Mention some oxidation reactions that occur in daily life.
Choose the odd one out and write the reason:
Find the oxidation number of the element in the following compound.
N in NH3
