Civil Services Prep

Prelims MCQ · Geography

In an intensively irrigated area with a dry climate, dissolved salts rise from lower soil layers and accumulate at the surface, reducing the fertility of formerly productive alluvium.

Which one of the following conclusions is most appropriate?

  1. The area is undergoing laterisation caused by excessive rainfall and leaching.
  2. The process will naturally increase soil humus and restore its fertility.
  3. Over-irrigation is promoting capillary salt accumulation, and gypsum may be used as a corrective measure.
  4. The process is a form of gully erosion that should be treated primarily with check dams.
  1. A cultivated hillside is experiencing rapid runoff and the formation of several small finger gullies. Which…
  2. A geological survey records the following intrusive bodies: Body P is thin and nearly horizontal. Body Q is…
  3. A physiographic region has the following characteristics: Its principal river flows from northeast to…
  4. A place has the following characteristics: Its underlying land surface heats rapidly during summer and cools…
  5. A soil is deep, clayey and relatively impermeable. It becomes sticky when wet, develops wide cracks during the…
  6. A stream on one side of a divide has a steeper gradient and receives more precipitation than a neighbouring…