Question

5. In a candle flame, the temperature is highest in the...
a.yellow zone
b.blue zone
c.dark zone
d.red zone
6. An example for non-combustible substance is...
a.petrol
b.spirit
c.water
d.coal
7. The SI unit for measuring heat is...
a.joule
b.Celsius
c.Fahrenheit
d.Newton
8. For a fuel to burn, it must be heated to its...
a.boiling point
b.ignition temperature
c.highest temperature
d.room temperature
II. Tick (√) the true statements and cross (x) the false ones.
1. Coal, wood and paper are combustible substances.
2. Every combustible substance has its ignition temperature.
3. The temperature at which a substance stops burning is its
ignition temperature.
​

Answer 1

Answer:

5) option b

6) option a

7) option a

8) option b

true and false

1) true

2) false

3) true

hopes it helps you.