Chemistry (JAMB 2003)

Submit Examination Cancel

This is for O'level students preparing for Chemistry.
Instructions: Achieve at lease 50% in less than 30 seconds per question.

Quiz Started: 0 Second ago · 30 April 2024 7:21 · Questions: 50 · Answered: 0 · Recommended Time: 0h:25m:0s

Warning!!!

You are about to end this examination session without submitting. All progress will be lost once you do this. You can close this dialogue or continue to close session.

Are you sure?

Attempts Made: 0/50

You are about to submit and end this examination session. If time-enforce is enabled in this quiz questions will automatically be submitted when your time is up, only if you do not close this page. However, if you are sure you have finished, you can click on the button below to submit. Close the dialogue if you still wish to review. If your attempt shows zero, quiz will not be submitted. Attempts are deleted if not submitted within 1 week.

27 Click Here To Discuss Question

In the electrolysis of a concentrated solution of sodium chloride using inert electrodes, which of the following ions are discharge at the cathode and anode respectively?
A. Na⁺ and Cl^- B. Na⁺ and OH

C.H⁺ and OH^- D. H⁺ and Cl^-

Select 1 Option (1 Mks)

28 Click Here To Discuss Question

CO_g) + H₂O_(g)→ CO_2(g) + H_2(g)
From the reaction above, calculate the standard heat change if the standard enthalpies of formation of CO_2(g) ,H₂O_(g) and CO_(g) in kJ mol-1 are -394, -242 and –110
respectively.
A. -262 kJmol^-1 B. –42 kJmol^-1
C. +42 kJmol^-1 D. +262 kJmol^-1

Select 1 Option (1 Mks)

«Previous Next»

speaker_notes Chemistry (JAMB 2003)

Chemistry (JAMB 2003)