Sulphur dioxide bleaches colouring matter by :
A. Reduction
B. Dehydration
C. Decomposition
D. Oxidation
Answer: Option A
Solution(By Examveda Team)
Sulphur dioxide gas exhibits bleaching properties in presence of moisture. It dissolves in water liberating nascent hydrogen. Nascent hydrogen removes oxygen atoms from the colouring matter (reduces colouring matter) and it loses its colour.Related Questions on Chemistry
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C. Dry farming
D. Monsoon
E. Trade winds
The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
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D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
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