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प्रश्न
Define the following in terms of gain or loss of hydrogen with one example:
Reduction
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उत्तर
The gain of hydrogen to a substance is called reduction.
When nitrogen reacts with hydrogen to form ammonia (NH3).
\[\ce{N2 + 3H2 -> 2NH3}\]
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संबंधित प्रश्न
The addition of oxygen to a substance is called ______ whereas removal of oxygen is called ______.
In the reaction represented by the equation:
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
- name the substance oxidised.
- name the oxidising agent.
- name the substance reduced.
- name the reducing agent.
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
Define reduction.
MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
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 following in term of gain or loss of oxygen with two examples.
Oxidation
Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain
Divide the above equation into oxidation and reduction half-reactions.
Complete and balance the following equation:
CuO +__________→ Cu +___________
State what is oxidising agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.
Explain the following reaction with their balanced chemical equation.
Hydrogen sulphide reacts with sulphur dioxide.
Rusting of iron involves a chemical reaction which is a combination of:
Select the oxidising agent for the following reaction:
\[\ce{H2S + I2 -> 2HI + S}\]
Why do we store silver chloride in a dark coloured bottle?
The tendency of atoms to have eight electrons in the outer shell is known as ______.
Define oxidation number.
Find the oxidation number of the element in the following compound.
N in NH3
The metallic oxide which can be reduced by using common reducing agents is ______.
