This document consists of 8 printed pages and 4 blank pages.
SP (SLC/KN) S53418/4
© UCLES 2003
CAMBRIDGE INTERNATIONAL EXAMINATIONS
General Certificate of Education Ordinary Level
Paper 6 Alternative to Practical
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name in the spaces provided at the top of this page.
Write in dark blue or black pen in the spaces provided on the Question Paper.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Answer all questions.
The number of marks is given in brackets [ ] at the end of each question or part question.
For Examiner’s Use
If you have been given a label, look at the
details. If any details are incorrect or
missing, please fill in your correct details
in the space given at the top of this page.
Stick your personal label here, if
• Sucrose (cane sugar) does not react with Benedict’s solution.
• Sucrose molecules consist of a pair of molecules joined together.
• Sucrose can be split into two smaller molecules by the process of hydrolysis.
• Each of these smaller molecules will react with Benedict’s solution.
• Hydrolysis can be carried out by heating a solution of sucrose with dilute hydrochloric acid.
• An enzyme will also carry out the hydrolysis, at a lower temperature.
• Benedict’s solution can react only in alkaline solution.
• Sodium hydrogencarbonate can be used to neutralise dilute hydrochloric acid.
You are provided with a solution that contains only sucrose.
(a) Using the above information and your own experience of food testing, describe and
explain how you would demonstrate that the solution contained sucrose but did not
initially contain glucose. Practical details should be given. Use the following headings.
to show the absenc