Determine the weight of potassium in a 50kg NPK (20:20:10) bag of fertilizer.
5.0kg
7.0kg
10.0kg
20.0kg
Correct answer is C
No explanation has been provided for this answer.
I and II only
I and III only
II and IV only
III and IV only
Correct answer is A
No explanation has been provided for this answer.
Loss of nitrogen from the soil through the removal of oxygen from nitrates by bacteria is known as
Ammonification
Dehydration
Dentrification
Nitrification
Correct answer is C
No explanation has been provided for this answer.
Which of the following terms is not associated with surface irrigation?
Tile
Basin
Dyke
Furrow
Correct answer is A
No explanation has been provided for this answer.
Helium is preferred to hydrogen in filling balloons because hydrogen
is inflammable
is diatomic
exhibits isotopy
is a component of water
Correct answer is A
Helium is a colorless, non-toxic, non-flammable gas that is lighter than air. When balloons are filled with helium, they will float.