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प्रश्न
Which among the following are physical or chemical change?
Heating of an iron rod to red hot
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उत्तर
Physical
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संबंधित प्रश्न
What is an oxidising agent?
Explain the following in term Oxidation of gain or loss of oxygen with two example.
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When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
Define oxidation in terms of gain or loss of hydrogen with one example.
Fill in the blank
In redox reaction oxidation and reduction occur ............................
TRUE \ FALSE
Hydrogen is a good oxidizing agent.
Give the general group study of hydrogen with reference to
reducing power
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Cl2 + H2S → 2HCl + S
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Name:
an oxidizing agent that does not contain oxygen.
Complete and balance the following equation:
CuO +__________→ Cu +___________
Explain the term redox reaction with an example involving the reaction of hydrogen sulphide with chlorine.
Rusting of iron involves a chemical reaction which is a combination of:
What is a redox reaction?
Mention some oxidation reactions that occur in daily life.
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Identify the following reactions as oxidation/reduction/redox reaction
CuO+H2 → Cu+H2O
In the redox reaction:
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
