Question

Practice Time
Objective Type Questions
A Fill in the blanks
to produce
2.
and
3.
and
5. Flame is formed when the
like
of a fuel burns
and
8. Temperature at which a substance starts burning is called
B. Write T'
1. Combustion takes place when a substance reacts with
is a substance which is burnt to produce energy
are the main sources of energy in the world.
6. The heat released by burning 1 g of fuel is called its
7. Combustion can be stopped by stopping the contact between
4. Combustion of fossil fuels produces gases​

Answer 1

Answer:

5 ch4

8 ignition temparature

B 1. false