Question

E. Fill in the blanks:
1. Afuel is a substance that can be used to produce heat at a
cost.
2. Afuel has very
ignition temperature is dangerous to store,
3. Agood fuel should burn at a
rate and its combustion should be
4. Fossil fuels are non-renewable because they take of years to form.
5. The outermost zone of the candle flame is called
zone.
6. Gobar gas is produced by
of cow dung by anaerobic bacteria present in cow dung.
7. Abetter fuel leaves
residue after combustion.​

Answer 1

Answer:

You will also love the ad-free experience on Meritnation's Living Science ... It had an ignition temperature of 20°C. Is it a good fuel? ... (c) one milligram of the fuel is completely burnt.

Ignition temperature: It is the minimumtemperature to which a combustible substance must be heated, before it catches fire. ... But if both are heated a little, than kerosene oil will catch fire and not wood. This shows that ignition temperature of kerosene oil is lower than that of wood.

HOPE YOU UNDERSTAND