(a) Which is better fuel- Coal or Coke. Why?
(b) Why do acne and pimples appear during adolescence period?
(c) Why do heavy vehicles have broad tyres?
(d) Write any two factors on which force of friction depends?
Answers
Answered by
0
Explanation:
Coal and coke both are as fuels. But, coke is considered to be a better fuel than coal because of the following reasons: (i) Coke has been higher calorific value than coal: So, coke produces more heat than coal on an equal mass basis.
Answered by
0
Answer:
a)Coke because it produce less smoke
b)Because this process increase the activity of sweat n oil glands
c)To increase the friction
d)?
Similar questions