Which country reported the highest Air Quality Index

Which of the following phosphatic fertilizer is suitable for acidic soils?

The nutrient element which controls movement of stomata and maintains the turgor of cells, is-

Which of the following statement is correct about Certified seed? 

Estimates of National Income in India are annually prepared by:

Equivalent acidity of Ammonium sulphate fertilizer is-

The particle size of "clay" is -

When rain falls on any material on ground having subfreezing temperatures and freezes into sheet or coating ice then it is known as:

Which type of soil has swelling and shrinking property? 

Seeds which cannot be successfully stored for long periods are known as 

What is the meaning of climate change?