differences [2marks]

Questions

2 questions · self-marked practice — reveal the answer and mark yourself.

Question 12 Marks

Give points of differences : $LPG$ and $CNG$

Answer

	$LPG$		$CNG$
$1.$	The petroleum gas which has been liquefied under pressure is known as $LPG.$	$1.$	Natural gas which is stored under high pressure is called $CNG.$
$2.$	It is the most important fuel used in homes and vehicles.	$2.$	It is used as a fuel for transport vehicles. It can be supplied through pipes as a fuel.

Question 22 Marks

Give points of differences : Coal and Coke

Answer

	Coal		Coke
$1.$	It is hard as stone and black in colour.	$1.$	It is tough, porous and black sub-stance.
$2.$	Made from dead vegetation millions of year ago.	$2.$	Made from reaction on coal.
$3.$	The percentage of carbon depends on the types of coal.	$3.$	The percentage of carbon is $87\%$ to $89 \%.$

Science differences [2marks]