Which one of the following is true about stratosphere?
1. Ozone layer is found in stratosphere.
2. Aeroplanes fly in stratosphere.
Select the correct options:

Earth is nearest to the sun on

Which of the following factors is not associated with Insolation at the Surface of Earth?

Which one of the following ocean current is found in southern hemisphere?

Which of the following is incorrect about tides?

Which of the following is not a relief features of ocean floor?
1. Seamount
2. Guyots
3. Atoll
Select the correct options:

What could be the main reason/reasons for the formation of African and Eurasian desert belt?
1. It is located in the sub-tropical high pressure cells.
2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct in this context?

Khadar soils are preferred over Bhangar soils for crop cultivation because
1. Khadar soil are composed of fine particles than that of Bhangar soil.
2. Bhangar soils lack in kankar nodules.
Choose the correct reason from the codes below.

Why black soils are treated with cement or hydrated lime during Roadways and railways construction? Consider the reasons
1. To overcome problems of volume changes due to alternate expansion and shrinkage of soils.
2. To prevent soil erosion during wet season.
3. To improve bearing capacity of the soil.
Choose the correct reason from the codes below.

Although laterite soils are formed in regions with high rainfall and high temperature, it requires good dosage of manures. What are the reasons?
1. Intense leaching because of high rainfall.
2. lack or less availability of humus.
Choose the correct code from the following