Which calcium compound does not increase the pH of acidic soils?

5070_s11_qp_11

MCQ

2011

Paper 1, Variant 1

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Which row shows the order of increasing pH (lowest to highest) for strong acids, strong bases, weak acids and weak bases at the same concentration?

5070_s17_qp_11

MCQ

2017

Paper 1, Variant 1

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The oxide of element X reacts with acids to form salts. Which statement about element X or its oxide is correct?

5070_s20_qp_11

MCQ

2020

Paper 1, Variant 1

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Which statement about acids and bases is correct?

5070_s22_qp_11

MCQ

2022

Paper 1, Variant 1

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An excess of calcium hydroxide is added to an acidic soil. What happens to the pH of the soil?

5070_w11_qp_11

MCQ

2011

Paper 1, Variant 1

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An excess of calcium hydroxide is added to an acidic soil. What happens to the pH of the soil?

5070_w11_qp_12

MCQ

2011

Paper 1, Variant 2

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Shown...

5070_w11_qp_12

MCQ

2011

Paper 1, Variant 2

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Which of the statements about the preparation and properties of ammonia is correct?

5070_w14_qp_12

MCQ

2014

Paper 1, Variant 2

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What is a use of sulfuric acid?

5070_w18_qp_11

MCQ

2018

Paper 1, Variant 1

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The diagram shows some of the stages in the manufacture of ammonium sulphate. From which connecting pipe would a major leak most increase the pH value of rain?

5070_s05_qp_1

MCQ

2005

Paper 1, Variant 0

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