31. The Mistral is
A. Very cold wind, which blows down from the plateau of central France
B. Swift, dry, cold northerly wind that blows down from the western Alps and the plateau of Southern France and out over the Mediterranean
C. Wind that blows for 100 days a year and may cause extensive frost damage to plants
D. All of the above
32. The main period of the Mesozoic era include
A. Triassic period and Cretaceous period
B. Jurassic period and Triassic period
C. Triassic period, Jurassic period and Cretaceous period
D. Cretaceous period and Jurassic period
33. The main percentage of the volume of water in the hydrosphere is in
A. Oceans and seas
B. Groundwater, rivers and streams
C. Glaciers and ice sheets
D. Freshwater lakes and water vapors
34. The main tributaries of the Indus river system are
A. The Jhelum, the Chenab, the Ravi
B. The Beas, the Sutlej
C. Both (a) and (b)
D. None of the above
35. The model which explains the various types of igneous rocks
A. Rock cycle
B. Bowens reaction series
C. Both are similar terms
D. None of the above