Question

The substances which have very ______ ignition temperature and can easily catch fire with a flame are called ______ substances.

• A. low
• B. inflammable

Answer 1

• The substances which have very low ignition temperature and can easily catch fire with a flame are called Inflammable substances.
• Inflammable substances are those substances that catch fire very easily and their ignition temperature is very low.
• Examples of inflammable substances are alcohol, petrol, liquefied petroleum gas and so forth.
• When the vapors of flammable substances are in the air, and they come in contact with the liquids, they tend to ignite.
• The vapors are present at a certain level in the air. These levels are divided into two sections, i.e., Lower Flammability Limit (LFL) and Upper Flammable Limit (UPL).
• Hence the correct answer to be filled in the blank will be low and inflammable.