Metals and their compounds - Jamb Chemistry Past Questions and Answers

Question 136:

• JAMB 2019

Which of the following alkaline metals react more quickly spontaneously with water?

A. Calcium
B. Beryllium
C. Magnesium
D. Strontium

Question 137:

• JAMB 2019

Which of the following is a set of neutral oxides?

A. N\(_2\)O, H\(_2\)O, CO
B. N\(_2\)O, SO\(_2\), CO
C. N\(_2\)O, Na\(_2\)O, ZnO
D. N\(_2\)O, SO\(_3\), NO

Question 138:

• JAMB 2019

Which of the following statements about catalyst is false?

A. Biological catalysts are called enzymes
B. Catalyst do not appear in the balanced equation
C. Catalyst reduce the activation energy for a reaction
D. Catalysts do not alter the mechanism of the reaction and never appear in the rate low

Question 139:

• JAMB 2019

The cost of discharging 6.0g of a divalent metal, X from its salt is ₦12.00. What is the cost of discharging 9.0g of a trivalent metal, Y from its salt under the same condition?
[X = 63, Y = 27, 1F = 96,500C]

A. N12.00
B. N27.00
C. N63.00
D. N95.00

Question 140:

• JAMB 2020

Duralumin consists of aluminum, copper?

A. Zinc and Gold
B. Lead and Manganese
C. Nickel and Silver
D. Manganese and Magnesium