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Question
Which of the following statements about hydrogen is incorrect?
Options
It is an inflammable gas
It is the lightest gas.
It is not easily liquefied
It is a strong oxidizing agent.
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Solution
It is a strong oxidizing agent.
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RELATED QUESTIONS
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.
When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name
- substance oxidised, and
- substance reduced.
MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
Identify from the reaction the reactants that undergo oxidation and reduction.
\[\ce{NiO + H2 -> Ni + H2O}\]
Divide the above equation into oxidation and reduction half-reactions.
Complete and balance the following equation:
H2 + S → ___________
With reference to oxidation & reduction reaction – complete the statement given by filling in the blanks with only the words (a) Addition (b) Removal.
‘Oxidation is a chemical reaction involving ____ of oxygen to a substance or ____ of hydrogen from a substance. Reduction on the otherhand involves ____ of hydrogen to a substance or ____ of oxygen from a substance.
Identify the following reactions as oxidation or reduction
- Na → Na+ + e
- Fe3+ + 2 e- → Fe+
Why do we store silver chloride in a dark coloured bottle?
In the redox reaction:
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
