During destructive distillation of coal, it is converted into…………
a) coal gas
b) coal tar
c) ammonical
d) all of these
Petroleum:-
The word petroleum is a…………word .
a) Latin
b) Greek
c) both a & b
d) none of these
The word petroleum is the combination of ………Latin words.
a) two
b) three
c) four
d) five
The word petra means…………and oleum means…………
a) rock , oil
b) oil , rock
c) stone , oil
d) gold , silver
The petroleum is also called…………
a) mineral oil
b) crude oil
c) liquid gold
d) all of these
