CEKENAS END OF TERM ONE – 2025 CHEMISTRYPAPER 1

CEKENAS END OF TERM ONE – 2025
Kenya Certificate of Secondary Education (K.C.S.E)
233/1
CHEMISTRYPAPER 1
INSTRUCTIONS TO CANDIDATES
(a) Answer all the questions
(b) Mathematical tables and silent electronic calculators may be used
(c) All working must be clearly shown where necessary
1. a) By aid of diagrams, distinguish between a dropping funnel and a filter funnel.
[1 mark]
b) Give one reason why laboratory apparatus are made of plastic.
[1 mark]
2. a) The table below shows indicators and their colors in acids and bases.
Complete the table by filling in the gaps.
[1 mark]
Indicator
Acid
Base
Methyl orange
Yellow
Colourless
Pink
b) How does the pH value of potassium hydroxide solution compare with that of ammonia solution?
Explain your answer.
[2 marks]
3. a) State one functional difference between a non-lum