Jamb Chemistry Past Questions and Answers

Question 1681:

• JAMB 2012

The purest from of iron which contains only about 0.1% carbon is

A. Pig iron
B. Wrough iron
C. Cast iron
D. Iron pyrite

Question 1682:

• JAMB 2012

A common characteristic between zinc and the other transition elements is the ability to

A. Have variable oxidation states
B. From complex ions
C. Act as a catalyst
D. From coloured ions

Question 1683:

• JAMB 2012

Which of the following metals is the least reactive?

A. Pb
B. Sn
C. Hg
D. Au

Question 1684:

• JAMB 2012

Geometric isomerism can exist in

A. Hex-3-ene
B. Hexane
C. Prop-l-ene
D. 3-methyl but -l-ene

Question 1685:

• JAMB 2012

Alkanals can be distinguished from alkanones by the reaction with

A. Sudan lll stain
B. Starch iodide paper
C. Lithium tetrahydrido aluminate (lll)
D. Fehling's solution