Year :
1997
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
31 - 40 of 48 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
Which of the substance lettered P to V in the equation below would be left on the filter paper if the reaction mixture were filtered? P (aq) + Q(aq) → V(s) + R(aq) + T(g) A. P B. Q C. V D. T E. R |
C |
| 32. |
When chlorine is added to slaked lime, the product obtained is A. bleaching powder B. chlorinated water C. hydrochloric acid D. oxochlorate (l) acid E. trioxochlorate (V) salt |
A |
| 33. |
Which of the following when heated strongly in air will leave a metal as residue? A. Sodium trioxonitrate (V) B. Potassium trioxonitrate (V) C. Silver trioxonitrate (V) D. Lead (ll) trrioxonitrate(V) E. Aluminium trioxonitrate (V) |
C |
| 34. |
Which of the following is used as water softener? A. Na2CO3.10H2O B. 5H2O C. 7H2O D. CaCI2.2H2O E. 10H2O |
A |
| 35. |
The following oxides react with both acids and bases to form salts except A. zinc oxide B. lead (ll) oxide C. aluminium oxide D. tin (IV) oxide E. carbon (Iv) oxide |
E |
| 36. |
Which of the following metals is not extracted by electrolysis ? A. lron B. Sodium C. Calcium D. Magnesium E. Aluminium |
A |
| 37. |
Which of the following is an ore of aluminium? A. Haematite B. Magnetite C. Siderite D. Bauxite E. Cassiterite |
D |
| 38. |
Lead and tin are the components of A. steel B. bronze C. brass D. dentist amalgam E. soft solder |
E |
| 39. |
An atom 17 protons, 17 electrons and 18 neutrons has a mass number of A. 17 B. 18 C. 34 D. 35 E. 52 |
D |
| 40. |
If an element R belongs to the same group as sodium, an aqueous solution of ROH will A. be neutral B. be acidic C. be coloured D. have pH greater than 7 E. turn back litmus red |
D |
| 31. |
Which of the substance lettered P to V in the equation below would be left on the filter paper if the reaction mixture were filtered? P (aq) + Q(aq) → V(s) + R(aq) + T(g) A. P B. Q C. V D. T E. R |
C |
| 32. |
When chlorine is added to slaked lime, the product obtained is A. bleaching powder B. chlorinated water C. hydrochloric acid D. oxochlorate (l) acid E. trioxochlorate (V) salt |
A |
| 33. |
Which of the following when heated strongly in air will leave a metal as residue? A. Sodium trioxonitrate (V) B. Potassium trioxonitrate (V) C. Silver trioxonitrate (V) D. Lead (ll) trrioxonitrate(V) E. Aluminium trioxonitrate (V) |
C |
| 34. |
Which of the following is used as water softener? A. Na2CO3.10H2O B. 5H2O C. 7H2O D. CaCI2.2H2O E. 10H2O |
A |
| 35. |
The following oxides react with both acids and bases to form salts except A. zinc oxide B. lead (ll) oxide C. aluminium oxide D. tin (IV) oxide E. carbon (Iv) oxide |
E |
| 36. |
Which of the following metals is not extracted by electrolysis ? A. lron B. Sodium C. Calcium D. Magnesium E. Aluminium |
A |
| 37. |
Which of the following is an ore of aluminium? A. Haematite B. Magnetite C. Siderite D. Bauxite E. Cassiterite |
D |
| 38. |
Lead and tin are the components of A. steel B. bronze C. brass D. dentist amalgam E. soft solder |
E |
| 39. |
An atom 17 protons, 17 electrons and 18 neutrons has a mass number of A. 17 B. 18 C. 34 D. 35 E. 52 |
D |
| 40. |
If an element R belongs to the same group as sodium, an aqueous solution of ROH will A. be neutral B. be acidic C. be coloured D. have pH greater than 7 E. turn back litmus red |
D |