alleryStart learning →Why are alkali metals stored under kerosene?
ATo make them harder in the standard view
BTo increase melting point
CTo prevent reaction with air and water
DTo improve their colour
Answer & Solution
Correct answer: C. To prevent reaction with air and water
1. Alkali metals react vigorously with both air and water.
2. They tarnish and may catch fire on contact.
3. Kerosene is a non-polar liquid that excludes air and moisture.
4. So alkali metals are kept under kerosene for safe storage.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 5 'The Periodic Table'_
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