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प्रश्न
Fill in the following blanks with suitable words:
The addition of hydrogen to a substance is called ........ whereas removal of hydrogen is called .......
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उत्तर
The addition of hydrogen to a substance is called reduction, whereas removal of hydrogen is called oxidation.
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संबंधित प्रश्न
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
What is an oxidation reaction? Identify in the following reaction (i) the substance oxidised, and (ii) the substance reduced:
ZnO + C → Zn + CO
Fill in the following blanks with suitable words:
The addition of oxygen to a substance is called ......... whereas removal of oxygen is called ........
Give one example of an oxidation-reduction reaction which is also a combination reaction.
Define reduction in terms of gain or loss of hydrogen with one example.
Fill in the blank
In redox reaction oxidation and reduction occur ............................
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
Identify the substances that are oxidised and the substances that are reduced in the following reaction.
\[\ce{CuO_{(s)} + H2_{(g)} -> Cu_{(s)} + H2O_{(l)}}\]
Name:
a solid that is an oxidizing agent.
The process of reduction involves ____________.
Identify the reducing agent in the following reactions
`"Fe"_2"O"_3 + 3"CO" -> 2"Fe" + 3"CO"_2`
Identify the oxidising agent (oxidant) in the following reactions.
`"CuO" + "H"_2 -> "Cu" + "H"_2"O"`
Oxidizing agents are otherwise called ______.
The tarnishing of metals is an example of ______ reaction.
Choose the odd one out and write the reason:
What is rancidity?
Find the oxidation number of the element in the following compound.
N in NH3
Find the oxidation number of the element in the following compound.
A1 in AlCl3
In the redox reaction:
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
