The ………theory about origin of petroleum could not gain popularity.
a) organic origin
b) in-organic origin
c) both a & b
d) none of these
Occurrence of Petroleum:-
Deposits of petroleum are found at about 200 to……….feet below the earth surface.
a) 500
b) 700
c) 1000
d) 900
The richest deposits of petroleum are located in …………….
a) Saudi Arabia
b) Iron
c) Iraq
d) all of these
………….have also rich oil deposits.
a) Russian federation
b) central Asian states
c) both a & b
d) none of these
Petroleum is also found in central African states such as …………….
a) Libya
b) Venezuela
c) Nigeria
d) all of these
