Subsection 10.1. Water for Chemistry, O Level - revisedeck

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10.1. Water

A subsection of Chemistry, 5070, through 10. Chemistry of the environment

Listing 10 of 85 questions

Element X does not conduct electricity and has a low melting point. Which could be element X?

5070_w12_qp_11

MCQ

2012

Paper 1, Variant 1

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The table gives some of the properties of four substances. Which substance could be hydrogen chloride?

5070_w13_qp_12

MCQ

2013

Paper 1, Variant 2

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Which property of a liquid ester can be used to check its purity before use as a food flavouring?

5070_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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The graph gives the melting points (m.p.) of mixtures of lead and tin. m.p. of pure lead m.p. of pure tin melting point / °C melting point / °C % tin in the mixture The graph shows that any mixture of lead and tin must have a melting point that is A above that of tin. B below that of lead. C below that of both tin and lead. D between that of tin and lead.

5070_w16_qp_11

MCQ

2016

Paper 1, Variant 1

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The graph gives the melting points (m.p.) of mixtures of lead and tin. m.p. of pure lead m.p. of pure tin melting point / °C melting point / °C % tin in the mixture The graph shows that any mixture of lead and tin must have a melting point that is A above that of tin. B below that of lead. C below that of both tin and lead. D between that of tin and lead.

5070_w16_qp_12

MCQ

2016

Paper 1, Variant 2

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Four substances are heated gently. The temperatures at which they start and finish melting are recorded. substance temperature start melting / °C finish melting / °C Which statement about the substances is correct?

5070_w18_qp_12

MCQ

2018

Paper 1, Variant 2

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Which material has the highest melting point?

5070_w20_qp_11

MCQ

2020

Paper 1, Variant 1

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Which material has the highest melting point?

5070_w20_qp_12

MCQ

2020

Paper 1, Variant 2

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The flow chart shows how impure water can be treated to produce drinkable water. impure water drinkable water pass through large-sized gravel pass through small-sized gravel pass through carbon pass chlorine through it What is not removed from the water by this process?

5070_s08_qp_1

MCQ

2008

Paper 1, Variant 0

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Why is carbon used in the purification of drinking water?

5070_s10_qp_11

MCQ

2010

Paper 1, Variant 1

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Questions Discovered

85