Ports in western Europe are ice free while those in Canada at the same latitude are frozen. This is because:

Punjab and haryana exploit more than 85% of ground water for irrigation. This is due to:
1. low surface water availability.
2. impact of Green revolution.
3. change in cropping pattern with an increased preference for rice.
Select the correct answer using the codes given below.

The seismic weaves helps in understanding the interior of earth. Which of the following about seismic waves is/are correct ?
1. P waves travel with fastest speed and are most destructive.
2. S waves cannot pass through liquid.
3. The surface waves (L) are analogous to light waves.
Select the correct answer using the codes given below.

Consider the following statements :
1. A positive Southern Oscillation Index (SOI) indicates a good Indian monsoon.
2. A negative SOI is often seen in the El-Nino years.
Which of the statements given above is/are correct ?

Igneous rocks are also caused primary rock because

The saline soils can be reclaimed by
1. providing good drainage.
2. applying lime or gypsum.
3. cultivating salt resistant crops.
Select the correct answer using the codes given below.

Generally saline lakes are found in semi-arid/ arid regions because

With reference to plate margins, consider the following statements :
1. New oceanic crust is continuously formed at convergent plate margins.
2. At divergent plate margin crust is neither created nor destroyed.
Which of the statements given above is/are correct ?

The “land not available for cultivation” under land use categories includes
1. lands used for settlement.
2. barren lands like deserts.
3. fallow lands
4. grazing lands.
Select the correct answer using the codes given below.

With reference to weathering, consider the following statements :
1. Weathering involves large-scale transport of weathered materials.
2. Weathering is a static process.
Which of the statements given above is/are correct ?