Science, asked by itsme9832, 1 year ago

which of the following. has the lowest ignition temperature?
a)petrol
b)kerosene
c)coal
d)LPG


the substance having the highest calorific value is
a. LPG
B. hydrogen
c. oxygen
d. coal gas


which of the following. has the highest calorific value?
1. wood
2.dung cake
3. methane gas
4. biogas

Answers

Answered by aqibkincsem
49

For first question Coal is answer, second one is hydrogen, third one is biogas, and in general, the Self Ignition auto ignition temperature is lowest temperature at which a fuel like petrol or diesel spontaneously ignites in normal atmosphere without an external source of ignition.


It plays important role and it will be vary based on different factors.

Answered by meet4536
8

Answer:

third one is methane gas

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