1
1 mark
Which of the following would be recovered unchanged in the Ostwald process?
Water
Oxygen
Ammonia
Platinum
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Fertilisers (SQA National 5 Chemistry): Exam Questions
Exam code: X813 75
7 mins7 questions
2
1 mark
Which of the following statements is true for ammonia?
It has the formula NH4 +.
It will react with acids.
It will turn damp pH paper red.
It is a solid at room temperature.
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3
1 mark
Which of the following compounds can be used to provide two of the essential elements required for healthy plant growth?
K2CO3
K2SO4
NH4NO3
(NH4)3PO4
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4
1 mark
Which metal is used as the catalyst in the industrial manufacture of ammonia?
Platinum
Nickel
Iron
Palladium
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5
1 mark
Which line in the table correctly identifies the reactant and product for the industrial process?
Industrial process | Reactant | Product | |
A | Haber | ammonia | nitric acid |
B | Ostwald | ammonia | nitrogen |
C | Haber | nitrogen | ammonia |
D | Ostwald | nitric acid | ammonia |
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6
1 mark
Which line in the table is correct for the Ostwald process?
Product | Catalyst | |
A | HNO3 | iron |
B | HNO3 | platinum |
C | NH3 | iron |
D | NH3 | platinum |
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7
1 mark
Which of the following salts would not be used as a fertiliser?
Ammonium chloride
Ammonium phosphate
Sodium chloride
Sodium phosphate
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