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 2002 - Question 42

Chemistry 2002 JAMB Past Questions - Question 42: A rock sample was added to cold dilute HNO3 The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains

Choose the correct answers from the options given.

A rock sample was added to cold dilute HNO3 The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains

A: CL−

B: NO−³

C: SO3²‾

D: SO4²‾

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CHEMISTRY

Chemistry 2002 JAMB Past Questions - Question 42: A rock sample was added to cold dilute HNO3 The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains

Examkit's JAMB CBT App

Correct Answer

Explanation