What is the normality of HCl if 15 ml of 0.1N Na₂CO₃ is consumed to titrate 10 ml of HCl?

The most widely used vegetation index is

Which one of the following is the active factor of soil formation?

The highest category of soil classification system is

The essentiality of Molybdenum was discovered by

Resource Conservation Technologies include: A) Zero or Minimum Tillage B) Direct Seeding C) Bed planting with residue mulch