Question

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1⃣. ᴄᵒᵐᵇᵘˢᵗⁱᵒⁿ 

2⃣. ᴄᵃˡᵒʳⁱᶠⁱᶜ ᵛᵃˡᵘᵉˢ 

3⃣. ɪᵍⁿⁱᵗⁱᵒⁿ ᵗᵉᵐᵖᵉʳᵃᵗᵉ 





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Answer 1

happy republic day
the process of burning of a substance in air is combustion
the lowest temperature at which a substance catches fire is known as ignition temperature
amount of heat energy produced on complete combustion of 1kg of fuel is called calorific value
respect freedom fighters

Answer 2

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⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐
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1⃣ $\bold{COMBUSTION \: :}$ A chemical reaction in which a substance or a material burns in the presence of OXYGEN (O2) in air to release large amount of heat and light is called combustion. However, Oxygen itself is a non-combustible gas, i.e., it does not catch fire. But, Oxygen is the supporter of COMBUSTION process.

2⃣ $\bold{CALORIFIC \: VALUE \: :}$ The amount of heat produced due to the complete combustion of 1 kg of a substance (mostly fuels), is called its calorific value. In S. I. system it is measured in Joules per Kilogram (J/Kg).

3⃣ $\bold{IGNITION \: TEMPERATURE \: :}$ Ignition temperature is the minimum temperature to which a substance is heated to make it burn. So, every substance which is burning is heating up either spontaneously or rapidly and sometimes slowly undergoes a temperature known as ignition temperature.


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⭐⭐⭐ ALWAYS BE BRAINLY ⭐⭐⭐
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