Chemistry 2000 Jamb Past Questions and Answers

Question 21 :

• JAMB 2000

Hydration of ions in solution is associated with

A. Absorption of heat
B. Reduction of heat
C. Conduction of heat
D. Liberation of heat

Question 22 :

• JAMB 2000

HCL_(aq) + H₂O_(l) H₃O⁺_(aq) + Cl^-_(aq)
In the reaction above, Cl^-_(aq) is the

A. Conjugate acid
B. Acid
C. Conjugate base
D. Base

Question 23 :

• JAMB 2000

In which order are the following salts sensitive to light?

A. Agl > AgCl > AgBr
B. AgCl > Agl > AgBr
C. AgBr > AgCl > Agl
D. AgCl > AgBr > Agl

Question 24 :

• JAMB 2000

The pOH of a solution of 0.25 mol dm^-3 of hydrochloric acid is

A. 12.40
B. 13.40
C. 14.40
D. 14.60

Question 25 :

• JAMB 2000

MnO_4(aq) + 8H⁺_(aq) + Y → Mn²⁺_(aq) + 4H₂O_(l)
Y in the equation above represents

A. 2e^-
B. 3e^-
C. 5e^-
D. 7e^-