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.

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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.

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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 22

Chemistry 2009 JAMB Past Questions - Question 22: The oxidation state of Cr in K2Cr2O7 is .

Choose the correct answers from the options given.

The oxidation state of Cr in K2Cr2O7 is .

A: +7

B: .+6

C: +5

D: 4

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CHEMISTRY

Chemistry 2009 JAMB Past Questions - Question 22: The oxidation state of Cr in K2Cr2O7 is .

Examkit's JAMB CBT App

Correct Answer

Explanation