Jamb Chemistry 2017 Past Questions and Answers

Question 31:

• JAMB 2017

In the diagram above. X is

A. SO₃
B. SO₂
C. S
D. H₂S

Question 32:

• JAMB 2017

The diagram above. Y is

A. Fused CaO
B. H₂O
C. NaOH
D. Concentrated H₂SO₄

Question 33:

• JAMB 2017

Calculate the mass of copper deposited when a current of 0.5 ampere was passed through a solution of copper(II) chloride for 45 minutes in an electrolytic cell. [Cu = 64, F = 96500Cmol^-1]

A. 0.300g
B. 0.250g
C. 0.2242g
D. 0.448g

Question 34:

• JAMB 2017

C₃H₅ - COH₃ =CH₂
The IUPAC nomenclature of the structure above is

A. 3-methybut-3-ene
B. 2-methylbut-1-ene
C. 2-ethylprop-1-ene
D. 2-methylbut-2-ene

Question 35:

• JAMB 2017

The reddish—brown rust on ion roofing sheets consists of

A. Fe³ + (H₂O)₆
B. FeO.H₂O
C. Fe₂O₃.3H₂O
D. Fe₃O₄.2H2₂O