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Substances which have very low ignition temperature and can easily catch fire with a flame are called:
ANon-combustible substances
BCombustible substances
CCalorific substances
DInflammable substances
Answer & Solution
Correct answer: D. Inflammable substances
Inflammable substances — like petrol, alcohol, LPG — have very low ignition temperatures and ignite easily. Note: all inflammable substances are combustible, but not every combustible substance is inflammable.
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