Daily Practice

GCSE Science

16th October 1991

5 questions · GCSE · 584 questions in this band

1
Alcohols, Carboxylic Acids and Polymers
Name the two methods used to produce ethanol industrially.
2
Chemical Analysis
Which reagent is added, and in what colour change, to test for chlorine gas?
3
Tests for Ions, Gases and Flame Tests
Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
4
Chromatography and Instrumental Analysis
A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
5
Chemistry of the Atmosphere
Give two human activities that increase the amount of greenhouse gases in the atmosphere.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1991, including the monthly compilation PDF.