Jamb Chemistry Past Questions and Answers

Question 1516:

• JAMB 2009

The acid used in electrolysis of water is dilute

A. HNO₃
B. CH₃COOH
C. H₂SO₄
D. HCl

Question 1517:

• JAMB 2009

What volume of 1.5M solution of KOH would contain 0.045 moles

A. 67.50 cm³
B. 30.00 cm³
C. 6.75 cm³
D. 3.00 cm³

Question 1518:

• JAMB 2009

The salt formed from a reaction between citric acid and sodium hydroxide in solution will be

A. Acidic
B. Basic
C. Complex
D. Neutral

Question 1519:

• JAMB 2009

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

A. Yellow to purple
B. Orange to green
C. Green to orange
D. Purple to yellow

Question 1520:

• JAMB 2009

The oxidation state of Cr in K₂Cr₂O₇ is

A. +7
B. +6
C. +5
D. 4