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 TEMPERATURE 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.
"WHAT ARE W' AND 'X'?
"WHAT IS THE PHYSICAL STATE OF 'W' AND 'X'.
*NAME THE PROCESS 'Y'. *NAME THE PRODUCT 'Z'.
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(a) (i) petroleum (ii) natural gas
(b) (i) tick liquid (ii) gas
(c) fractional distillation
(d) kerosene
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