Physics Chemistry & Biology Test 4
Mixture of Humus and rock particles called as ?
  • Bedrock
  • Bedsoil
  • Soil
  • All the above
Explanation:

The mixture of humus and rock particles is called Soil.

Soil consists of mineral particles (from rocks) and organic matter (such as humus) that together support plant life.

 
Units of Mass ?
  • Grams
  • Kilograms
  • Both a and b
  • None of the above
Explanation:

The units of mass are Both grams and kilograms.

Grams and kilograms are commonly used units in the metric system to measure mass, with 1 kilogram equal to 1,000 grams.

Which of following Crops grows in Red soil ?
  • Wheat
  • Rice
  • Millets
  • All the above
Explanation:

The crops that grow in red soil include All the above: wheat, rice, millets, and oil seeds. Red soil is known for its ability to support a variety of crops, particularly in regions with a warm climate.

Which soil is suitable for growing Wheat and Grams ?
  • Clayey soil
  • Loamy Soil
  • Both a and b
  • None of the above
Explanation:

Clayey and loamy soils are both suitable for growing wheat and grams:

  • Clayey Soil: This type of heavy soil retains water well, making it suitable for crops like wheat and grams. Incorporating humus can enhance its fertility.

  • Loamy Soil: Comprising a balanced mix of sand, silt, and clay (approximately 40–40–20%), loamy soil retains water and nutrients effectively while being easier to till than clayey soil.

Wheat requires warm temperatures, plenty of sunlight, and adequate water for optimal growth. It does not thrive in highly acidic soils or those with poor drainage.

Kharif crops are ?
  • Rice
  • Jowar
  • Maize
  • All the above
Explanation:

Kharif crops are:

All the above (Rice, Jowar, and Maize)

Kharif crops are typically sown with the onset of the monsoon season and harvested in the autumn. These crops thrive in warm, wet conditions, making them suitable for the rainy season in India.

Rabi season starts from ?
  • June – October
  • July- October
  • October – May
  • None of the above
Explanation:

The Rabi season in India generally starts from October and lasts until May, with crops being sown in the winter months and harvested in the spring.

Kharif season starts from ?
  • June – October
    • Explanation:

    The Kharif season in India typically starts with the onset of the southwest monsoon in June and lasts until October, when the harvesting of these crops begins.