Quiz  /  NEET MCQ on Macronutrients

  • 1. 
    The possible supplies of nitrogen and phosphorous ions in the soil is exhausted as they are found as

  • particles having no charge
  • ions that are negatively charged
  • ions that are positively charged
  • a disproportionate mixture of negatively charged ions

  • 2. 
    Plant of cabbage consumes phosphorous from

  • phosphate rocks
  • water irrigated soil
  • dry soil
  • none of the above

  • 3. 
    This is not absorbed through soil

  • Potassium
  • Nitrogen
  • Carbon
  • All of these

  • 4. 
    This is a major macronutrient, component of vitamins and enzymes

  • sea salt
  • sulphur
  • carbon dioxide
  • calcium phosphate

  • 5. 
    This macronutrients is a structural component of a cell wall activating the enzymes

  • nitrogen dioxide
  • boron dioxide
  • carbon monoxide
  • calcium

  • 6. 
    This macronutrient checks the opening and closing of the stomata and decreases the water loss from leaves

  • nitrogen
  • methane
  • urea
  • potassium

  • 7. 
    Deficiency of this causes the death of root tips and stem

  • carbon
  • calcium
  • nitrogen
  • phosphorous

  • 8. 
    Mustard’s sinigrin pungent principle can be attributed to

  • tannins containing nitrogen
  • glycoside containing amino group
  • glycoside containing sulphur
  • alkyloids containing cyanide radicle

  • 9. 
    This essential element is not a constituent of any enzyme however triggers the activity of many enzymes

  • K
  • Mn
  • Mg
  • Zn

  • 10. 
    Carbon is made available to crop plants in this form

  • element carbon
  • carbonates
  • amino acids
  • carbon dioxide
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