Q. The Palaeozoic era contains ____ time periods.

? Six

Q. The northern portion of the western coastal plain is called

? Konkan plain

Q. The number of a topographic map is 47A/16/NW. Its scale must be

? 1 : 25,000

Q. The radiation belts are zones in space around the

? Earth, Jupiter and Saturn

Q. The periods of different eras are further divided into

? Stages

Q. The production of wheat has increased mainly due to

? increase in yield per hectare

Q. Which of the following is not a kharif crop?

? Mustard

Q. The shape of earth is

? Oblate Spheroid

Q. The tertiary winds on the north of the Alps (Europe) are called

? The foehn

Q. The tropical easterlies wind lie at

? 0-30? latitude

Q. The transport of warm air toward the poles and cold air toward the equator is due to

? the development of waves

Q. The sulphites are a mineral group that contain one or more metallic elements in combination with the sulphate compound ____

? SO₄