Q.61)-Which of the following district of Tamil Nadu is not suitable for farming due to rising salinity in soil?
  • Tiruchirappalli
  • Nagapattinam
  • Ramanathpuram
  • Coimbatore
Q.62)-Soil factors are also known as-
  • Biological factors
  • Geo Morphological factors
  • Ecological factors
  • Edaphic factors
Q.63)-The Black soil related to which of the following crop-
  • Cotton
  • Sugarcane
  • Tea
  • Coffee
Q.64)-What is the name of the soil, rich in Calcium?
  • Pedocal
  • Pedalfer
  • Podzol
  • Laterite
Q.65)-Grau soil, like the Ash of Pine Forest, is also known as-
  • Red and peat soil
  • Tundra soil
  • Podzol
  • Gray soil
Q.66)-Which is the best suited soil for the cultivation of rice?
  • Laterite soil
  • Red soil
  • Alluvial Soil
  • Black soil
Q.67)-The red colour of red soil is due to-
  • Nitrogen
  • Humus
  • Iron
  • Copper
Q.68)-The soil which bleaches quickly due to rain,is called-
  • Red
  • Laterite
  • Black
  • Alluial
Q.69)-Why is crop rotation necessary?
  • To increase the fertillityof soil
  • To increase the quanitity of minerals
  • To reduce the quantity of proteins
  • To plough various types of crops
Q.70)-Which of the following method does not help in conservation of the fertility and moisture of soil?
  • Contour ploughing
  • Dry farming
  • Strip cropping
  • Shifting cultivation