Waec Chemistry 1994 Past Questions and Answers

Question 1:

• WAEC 1994

The components of universal indicator solution can best be separated by

A. Chromatography
B. Filtration
C. Evaporation
D. Crystallization
E. Fractional distillation

Question 2:

• WAEC 1994

The components of universal indicator solution can best be separated by

A. Chromatography
B. Filtration
C. Evaporation
D. Crystallization
E. Fractional distillation

Question 3:

• WAEC 1994

The number of replaceable hydrogen atoms in one acid indicates its

A. Basicity
B. Acidity
C. Alkalinity
D. Reactivity
E. PH value

Question 4:

• WAEC 1994

Catalytic hydrogenation of alkenes produces compounds with the general formula

A. C_nH_2n+1 OH
B. C_nH_2n+1
C. C_nH_2n+2
D. C_nH_2n-2
E. C_x(H₂O)_y

Question 5:

• WAEC 1994

A measure of the degree of disorder in a chemical system is known as the

A. Enthalpy
B. Free energy
C. Activation energy
D. Entrophy
E. Equilibrium