IGCSE Chemistry 0971/11/M/J/21 Q30

Question

30 A student writes three statements about potassium nitrate, KNO3.

1 The relative formula mass of KNO3 is 101.
2 Potassium nitrate contains the three essential elements for plant growth.
3 Potassium nitrate could be used as a fertiliser.

Which statements are correct?
A 1 and 2 only   B 1 and 3 only   C 2 and 3 only   D 1, 2 and 3

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Answer ( 1 )

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    2022-07-08T12:25:10+08:00

    2. Contains 2 essential elements for plant growth: N and K

    Ans: B

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