Chemistry Exams
Educational
KIGUMO CLUSTER EXAMS TERM 2, 2025 233/1 CHEMISTRY PAPER 1
By
Mock Exams
Price
KES 10.0
(Valid for 7 days)
Soft Copy Available
About this Book
KIGUMO CLUSTER EXAMS TERM 2, 2025
Kenya Certificate of Secondary Education
233/1
CHEMISTRY PAPER 1
1. a) State one functional difference between a non-luminous and luminous flame
(1 mk)
b) Using a glass tube, describe an experiment to show that the most colorless region of a luminous
flame contains unburnt gases.
(2 mks)
2. Consider the reaction below.
Cr2 O7-2(aq)-
Cr2O4−2 (aq)
i)
Using oxidation numbers, explain whether the above reaction is a redox reaction or not.
(2mks)
ii) Define dynamic equilibrium
(1 mk)
3. Dry sulphur (IV) oxide was passed through two pieces of coloured silk both in a gas jar as shown in the
Diagram.
Kenya Certificate of Secondary Education
233/1
CHEMISTRY PAPER 1
1. a) State one functional difference between a non-luminous and luminous flame
(1 mk)
b) Using a glass tube, describe an experiment to show that the most colorless region of a luminous
flame contains unburnt gases.
(2 mks)
2. Consider the reaction below.
Cr2 O7-2(aq)-
Cr2O4−2 (aq)
i)
Using oxidation numbers, explain whether the above reaction is a redox reaction or not.
(2mks)
ii) Define dynamic equilibrium
(1 mk)
3. Dry sulphur (IV) oxide was passed through two pieces of coloured silk both in a gas jar as shown in the
Diagram.
Book Details
Category:
Chemistry Exams
Added on:
October 04, 2025
Formats:
Digital, Print
You May Also Like
View All
