Daily Practice
GCSE Science
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15th December 1992
- 1Organic Chemistry
Name the two industrial methods of cracking.
- 2Alkanes, Alkenes and Crude Oil
State the general formula of the alkenes.
- 3Alcohols, Carboxylic Acids and Polymers
Explain why carboxylic acids are described as 'weak acids'.
- 4Chemical Analysis
State the difference between a pure substance and a formulation.
- 5Tests for Ions, Gases and Flame Tests
A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1992, including the monthly compilation PDF.