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 2021 - Question 19

Chemistry 2021 JAMB Past Questions - Question 19: What volume of which gas will be left unused when 100cm³ of hydrogen and 40cm³ of oxygen are mixed and sparked in a combustion chamber?

Choose the most appropriate option for the gap .

What volume of which gas will be left unused when 100cm³ of hydrogen and 40cm³ of oxygen are mixed and sparked in a combustion chamber?

A: 10cm³ of O2

B: 20cm³ of O2

C: 10cm³ of H2

D: 20cm³ of H2

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CHEMISTRY

Chemistry 2021 JAMB Past Questions - Question 19: What volume of which gas will be left unused when 100cm³ of hydrogen and 40cm³ of oxygen are mixed and sparked in a combustion chamber?

Examkit's JAMB CBT App

Correct Answer

Explanation