The substance W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. When W is subjected to a process called Y, then a number of different products are collected at different temperatures ranges which are put to different uses. A special grade of product Z obtained in this way is used as aviation fuel in jet aeroplanes. a-What are i) W and ii) X? b-What is the physical state of i) W and ii) X? c- Name the process Y. d- Name the product Z.

The substance W is a fossil fuel. It occurs deep below the ground in c

1.	The substance W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. When W is subjected to a process called Y, then a number of different products are collected at different temperatures ranges which are put to different uses. A special grade of product Z obtained in this way is used as aviation fuel in jet aeroplanes. a-What are i) W and ii) X? b-What is the physical state of i) W and ii) X? c- Name the process Y. d- Name the product Z.
Answer» EXPLANATION:a-i) W= crude oil or PETROLEUM ii) X=Natural GAS b-i) W=( THICK) liquid STATEII) X= Gaseous state c- Y= Fractional distillationZ=Kerosene

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