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प्रश्न
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
पर्याय
True
False
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उत्तर
False
Explanation:
The removal of hydrogen from a substance is called oxidation.
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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?
Give one example of an oxidation-reduction reaction which is also a combination reaction.
In the reaction represented by the following equation:
\[\ce{CuO_{(s)} + H2_{(g)} -> Cu_{(s)} + H2O_{(l)}}\]
- name the substance oxidised
- name the substance reduced
- name the oxidising agent
- name the reducing agent
Give the general group study of hydrogen with reference to
burning
Why this reaction is considered a reversible reaction?
Explain the term redox reaction with an example involving the reaction of hydrogen sulphide with chlorine.
Identify the reducing agent in the following reactions -
`"H"_2"O" + "F"_2 -> "HF" + "HOF"`
Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Under what conditions do these grapes ferment? Is it a chemical or a physical change?
Which among the following are physical or chemical change?
Sublimation of solid ammonium chloride
State the change in colour observed in following case mentioning the reason:
Copper powder is strongly heated in air.
