Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.

How do I practice JAMB past questions on Examkits?

You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.

Does Examkits work offline?

Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.

Do you offer video solutions for JAMB questions?

Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.

Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.

CHEMISTRY

JAMB 2009 - Question 21

Chemistry 2009 JAMB Past Questions - Question 21: The colour change observed when testing for reducing agents using acidified potassium heptaoxodichromate (VI) solution is

Choose the correct answers from the options given.

The colour change observed when testing for reducing agents using acidified potassium heptaoxodichromate (VI) solution is

A: yellow to purple

B: orange to green

C: green to orange

D: purple to yellow

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CHEMISTRY

Chemistry 2009 JAMB Past Questions - Question 21: The colour change observed when testing for reducing agents using acidified potassium heptaoxodichromate (VI) solution is

Examkit's JAMB CBT App

Correct Answer

Explanation