Post Utme Chemistry Past Questions and Answers

Question 586:

Which of the following metal is not normally extracted by chemical because of its position in the electrochemical series?

A. Cooper
B. Iron
C. Lead
D. Potassium

Question 587:

If 1 mole of aluminum contains 6 x10²² atoms of aluminum, how many atoms are contained in 0.9g of Aluminum?
(A1 =27)

A. 1.0x10²¹
B. 6.6x10²¹
C. 2.0x10²²
D. 0.6x10²³

Question 588:

If an organic compound decolourizes bromine water then the compound is ____________

A. Saturated
B. Supersaturated
C. Unsaturated
D. A solid

Question 589:

Fats and oil are ____________

A. Addition of long-chain fatty acids and alkali
B. Addition products of long chain fatty acids and glycerol
C. Concentration products of long-chain fatty acids and glycerol
D. Condensation products of formaldehyde and glycerol

Question 590:

PCl₅(G) PCl₃(g) + Cl₂(g), In the reaction above, a decrease in pressure will ____________

A. Increase the yield of PCl₃
B. Increase the yield of PCl₃
C. Accelerate the reaction
D. Decelerate the reaction