Why is coke considered a better fuel than coal ? Give four reasons.
(i) Coke burns without producing smoke whereas coal produces a lot of smoke on burning
(ii) Coke has a higher calorific value than coal.
(iii) Coke burns more readily than coal.
(iv) Coke leaves much less ash in burning as compared to coal.
What are the harmful effects of using fossil fuels ?
What are petrochemicals ? What are their uses ?
State two precautions that should be taken in using fossil fuels to avert the energy crises ?
What are the consequences of the green house effect ?
