611. World’s principal producer of silver is
A. India
B. Mexico
C. The USA
D. Canada
✅ The correct answer is option B.
UPSC
612. The Hawaiian Islands specialise in the cultivation of
A. cotton
B. rice
C. sugarcane
D. tobacco
✅ The correct answer is option C.
613. The USA is deficient in domestic supplies of
A. copper
B. lead
C. zinc
D. manganese
✅ The correct answer is option D.
614. In the Himalayas the melting or the snow is more on the
A. southern slopes
B. northern slopes
C. eastern slopes
D. western slopes
✅ The correct answer is option A.
615. What type or vegetation is associated with Australia?
A. Pampas
B. Downs
C. Canada
D. All the above
✅ The correct answer is option B.
616. The majority or the coal reserves found in India are of
A. Tertiary formation
B. Gondwana formation
C. Quaternary formation
D. Jurassic formation
✅ The correct answer is option B.
617. In both the hemispheres the trade winds blow towards the
A. Equator
B. horse latitudes
C. sub polar low pressure belts
D. poles
✅ The correct answer is option A.
618. The deflection of the wind to the right in the northern hemisphere and to Its left in the southern hemisphere is caused by the
A. rotation of the Earth
B. revolution of the Earth
C. uneven heating of the Earth
D. All the above
✅ The correct answer is option A.
619. If the atmospheric air is cooled because of expansion, the cooling is known as
A. adiabatic
B. lapse rate
C. alto-cooling
D. inverse cooling
✅ The correct answer is option A.
620. When dew point is reached it is said that at that temperature
A. the atmosphere is said to be saturated with water vapour
B. the relative humidity of the atmosphere is 100%
C. the atmosphere can hold no more water vapour
D. All the above
✅ The correct answer is option D.