Stirring the mixture vigorously
Adding more calcium chloride solution
lncreasing the concentration of the ethanedioic acid
Adding concentrated hydrochloric acid
Adding some distilled water
Correct answer is D
No explanation has been provided for this answer.
A fertilizer bag had the following inscription 27:10:10. This means that it contained
27kg of nirogen, 10kg of phosphate, 10kg of potash
27kg of phosphate, 10kg of potash, 10kg of nitrogen
27kg of potash, 10kg of nitrogen, 10kg of phosphate
27kg of sulphate, 10kg of potash, 10kg of phosphate
Correct answer is A
No explanation has been provided for this answer.
The plant nutrient essential for the formation of tubers is
Molybdenum
Phosphorus
Potassium
Sodium
Correct answer is C
No explanation has been provided for this answer.
Do not release their nutrients
Are too compact and poorly aerated
Lose their nutrients too readily after rains
Contain too much iron, aluminium and boron
Correct answer is B
No explanation has been provided for this answer.
Soil erosion caused by water can be controlled by
Overgrazing and bush burning
Ploughing and harrowing
Land clearing and stumping
Afforestation and erection of bunds
Correct answer is D
No explanation has been provided for this answer.