1361. The percentage of oxygen in atmospheric air is approximately:
A.10 per ceny
B.21 per cent *
C.30 per cent
D.40 per cent
1362. The frozen continent around the South Pole is _______
A.arctic
B.antarctica *
C.greenland
D.iceland
1363. The “Roof of the world” is
A.the alps
B.andes
C.the apinines
D.the pamir plateau (Tibet) *
1364. Which of thr following countries is not land locked?
A.afghanistan
B.bumra *
C.nepal
D.switzerland
1365. North America is the third largest continent of the world. How much world population in percentage is accommodated by North America?
A.6.5%
B.7.5%
C.7.7% *
D.9.5%
1366. Which of the following is not an example of exhaustible resources of the earth available to man?
A.coal
B.natural gas
C.petroleum
D.water *
1367. Which of the following is not an example of inexhaustible resources of the earth available to man?
A.Air
B.fossil fuels *
C.forests and wildlife
D.solar energy
1368. Which is the least populated continent of the world?
A.antarctica *
B.australia
C.north america
D.none of them
1369. Which of the following exhaustible and non-renewable fuels are inorganic in nature?
A.antarctica and bituminious coal
B.petroleum and natural gas
C.uranium and thorium *
D.lignite and peat
1370. Which of the following countries leads the world in the export of oil?
A.iran
B.iraq
C.saudi arabia *
D.venezuela