Question

Paper ,petrol,lpg,cng,etc are ——————substances

Answer 1

Answer:

all of the above are examples of naturally forming hydrocarbon compounds

Answer 2

Answer:

Paper, petrol, lpg, cng,etc are combustible substances.

Explanation:

• Combustible substances are those that can burn in the presence of air or oxygen and can produce heat or light.
• These can also be referred to as inflammable or non-renewable sources or energy.
• Combustible substances are mostly fuels or substances that contain hydrocarbons and yields carbon dioxide and water as products of combustion reaction along with release of heat or light.
• There are many types of combustion like slow, rapid, explosive combustion.
• Burning of fuels like petrol, LPG, CNG is an example of rapid combustion which leads to heat and light production by burning of fuel in short span of time.