Advertisements
Advertisements
प्रश्न
Explain the term reduction in term of addition and removal of oxygen/hydrogen with a suitable example.
Advertisements
उत्तर
Reduction: Addition of hydrogen or removal of oxygen is called reduction.
\[\ce{CuO + H2->Cu + H2O}\]
Copper oxide is reduced to `"Cu"`
\[\ce{H2S + \underset{\text{Reduced}}{Cl2->2HCl} + S}\]
Chlorine is reduced, as addition of hydrogen.
APPEARS IN
संबंधित प्रश्न
Hydrogen burns with a ______ flame and ______ sound is heard.
Identify from the reaction the reactants that undergo oxidation and reduction.
\[\ce{NiO + H2 -> Ni + H2O}\]
State whether the following conversion is oxidation or reduction:
PbO2 + SO2→ PbSO4
Reacting with water, an active metal produces
Choose terms from the options given in brackets to complete this sentence.
When CuO reacts with hydrogen,………………… is reduced and ……………….is oxidized to ………………….
(CuO, H2, Cu, H2O)
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?
Curding of milk
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain this observation giving suitable reason.
Mention some oxidation reactions that occur in daily life.
Identify the following reactions as oxidation/reduction/redox reaction
Zn + CuSO4 → Cu + ZnSO4
