WorksheetsFertiliser
Total questions: 26
Worksheet time: 22mins
Ammonium sulphate can be produced by reacting gypsum with
ammonia
ammonium carbonate
nitric acid
none of these
Nitrogenous fertiliser is required
during the early stage of growth to promote development of stem and leaves.
for accelerating fruit formation in later stage of growth.
to lessen the effect of excessive potash application.
none of these.
What are the three essential elements that plants require?
nitrogen phosphate potassium
nitrogen sulphur potassium
nitrogen potassium phosphorous
nitrogen potassium polonium
what is the catalyst used in the Haber process?
iron
platinum
silver
gold
What is produced in the Ostwald process?
ammonia
nitrogen
nitrate
nitric acid
Which of the following is untrue for the haber process?
ammonia gas is cooled and collected as a liquid
a really high temperature is used to speed up the reaction
hydrogen and nitrogen are the raw materials for the reaction
too high a pressure is unsafe
ammonia reacts with acids to produce ammonium salts
true
false
Which of the following would be a suitable fertiliser?
nitrogen dioxide
potassium nitrate
copper phosphate
nitrogen oxide
What is the percentage of nitrogen in potassium nitrate ?
25.7%
15.2%
20%
13.8%
Fertilisers are salts. what type of reaction produces fertilisers?
addition
precipitation
neutralisation
condensation
If you purchased a 10 kg bag of fertilizer with analysis 5-10-10. What percent of phosphate is in the bag?
5%
10%
15%
25%
If you purchased a 10 kg bag of fertilizer with analysis 5-10-10. How many kg's of phophates are in this bag?
10 kg
5 kg
0.5 kg
0.1 kg
