Q. Why is crop rotation necessary?

Correct Answer

To increase the fertility of soil

More Questions on Agriculture And Soil in India

  • Q. In Thanjavur delta ________ crop is cultivated three times in a year.
    A)Sugarcane
    B)Wheat
    C)Rice
    D)Groundnut
    Answer: Rice
  • Q. Which amongst the following States does not cultivate wheat?
    A)West Bengal
    B)Karnataka
    C)Maharashtra
    D)Tamil Nadu
    Answer: Tamil Nadu
  • Q. Which one of the following groups of crops is grown in India during the Rabi season?
    A)Barley, maize, rice
    B)Wheat, barley, gram
    C)Rice, maize, wheat
    D)Millet, gram, rice
    Answer: Wheat, barley, gram
  • Q. The remedy for soil erosion region is- 1. Bordering the region 2. Crop regulation 3. Deforestation 4. Allowing animals for grazing
    A)4, 3
    B)1, 2
    C)1, 4
    D)4, 2
    Answer: 1, 2
  • Q. A fertile soil, suitable growing common crops, is like to have a pH value of
    A)Six to seven
    B)Three
    C)Four
    D)Nine to ten
    Answer: Nine to ten
  • Q. Which state of India is known as “Sugar Bowl”?
    A)Andhra Pradesh
    B)Uttar Pradesh
    C)Punjab
    D)Bihar
    Answer: Uttar Pradesh
  • Q. Which of the following regions has almost all prevalent types of natural vegetation in India?
    A)The Himalayas
    B)The Coastal Plains
    C)The Deccan Plateau
    D)The Ganga Plain
    Answer: The Himalayas
  • Q. Which of the following is not a tropical type of soil?
    A)Black soil
    B)Red soil
    C)Desert soil
    D)Brown soil
    Answer: Brown soil
  • Q. The Red soils develop a reddish colour due to ________
    A)Tropical monsoonal climate
    B)Deforestation and over-grazing
    C)The presence of potash and magnesia
    D)A wide diffusion of iron in ancient crystalline and metamorphic rocks
    Answer: A wide diffusion of iron in ancient crystalline and metamorphic rocks
  • Q. The transfer of minerals from top soil to subsoil through soil water is called ________
    A)Leaching
    B)Percolation
    C)Conduction
    D)Transpiration
    Answer: Leaching
  • Q. The approximate representation of land use classification in India is
    A)Net area sown 43%; forests 29%; other areas 28%
    B)Net area sown 25%; forests 33%; other areas 42%
    C)Net area sown 58%; forests 17%; other areas 25%
    D)Net area sown 47%; forests 23%; other areas 30%
    Answer: Net area sown 47%; forests 23%; other areas 30%
  • Q. Under which climatic conditions do the laterite soils develop ?
    A)Cold temperature Climate
    B)Wet tropical Climate
    C)Hot and dry Climate
    D)Mediterranean type of Climate
    Answer: Wet tropical Climate
  • Q. HYV is also known ________ in India.
    A)Traditional revolution
    B)White revolution
    C)Blue revolution
    D)New agricultural policy
    Answer: New agricultural policy
  • Q. The soil of northern plain of India is formed by
    A)Weathering in situ
    B)Degradation
    C)Aggradation
    D)Erosion
    Answer: Aggradation
  • Q. The soil which bleaches quickly due to rain, is called
    A)Black
    B)Red
    C)Laterite
    D)Alluvial
    Answer: Laterite
  • Q. Soil of Western Rajasthan have a high content of
    A)Nitrogen
    B)Aluminium
    C)Calcium
    D)Phosphorus
    Answer: Calcium
  • Q. A few showers of rain during the months of December and January are beneficial to the rabi crops because they
    A)Cause fall in temperature
    B)Make the plant strong
    C)Protect the crops from frost
    D)Provide moisture for the germination of seeds
    Answer: Protect the crops from frost
  • Q. What is the main advantage of transplantation method in rice cultivation?
    A)It helps in early harvesting
    B)This method ensures maximum utilization of land
    C)It is helpful in achieving an economical use of water and a higher yield of grain
    D)The draining of water from the field before harvesting is made easy
    Answer: It is helpful in achieving an economical use of water and a higher yield of grain
  • Q. Soil can best be conserved on the hills by which of the cultivating methods?
    A)Contour ploughing
    B)Strip cropping
    C)Crop rotation
    D)Terracing
    Answer: Contour ploughing
  • Q. Which State has the largest number of sugar mills?
    A)Tamil Nadu
    B)Punjab
    C)Haryana
    D)Uttar Pradesh
    Answer: Uttar Pradesh

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