Year :
2005
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
31 - 37 of 37 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
The colour of the solution formed when ethyne reacts with an acidic solution of potassium tetraoxomanganate (VII) is A. purple B. colourless C. green D. pink |
B |
| 32. |
Fats are classified as A. hydrocarbons B. alkanoates C. alkanols D. carbohydrates |
B |
| 33. |
Ethyne undergoes the following reactions except A. polymerisation B. addition C. substitution D. esterification |
D |
| 34. |
Hardness in water can be removed by adding A. copper (ll) tetraoxosulphate (IV) B. sodium trioxocarbonate (IV) C. sodium chloride D. alum |
B |
| 35. |
Which of the following pairs of solutions will produce a precipitate when mixed? A. Pb(NO3)2(aq) and NaCI(aq) B. MgSO4(aq) and HCI(aq) C. ZnCI2(aq) and NaSO4(aq) D. NaOH(aq) and HNO3(aq) |
A |
| 36. |
Which of the following substance is an alloy of lead? A. Brass B. Duralumin C. Stainless steel D. Soft solder |
D |
| 37. |
In which of the following processes is biotechnology not applied? A. Manufacture of drugs B. Treatment of domestic sewage C. Production of alcoholic beverages D. Electroplating of metals |
D |
| 31. |
The colour of the solution formed when ethyne reacts with an acidic solution of potassium tetraoxomanganate (VII) is A. purple B. colourless C. green D. pink |
B |
| 32. |
Fats are classified as A. hydrocarbons B. alkanoates C. alkanols D. carbohydrates |
B |
| 33. |
Ethyne undergoes the following reactions except A. polymerisation B. addition C. substitution D. esterification |
D |
| 34. |
Hardness in water can be removed by adding A. copper (ll) tetraoxosulphate (IV) B. sodium trioxocarbonate (IV) C. sodium chloride D. alum |
B |
| 35. |
Which of the following pairs of solutions will produce a precipitate when mixed? A. Pb(NO3)2(aq) and NaCI(aq) B. MgSO4(aq) and HCI(aq) C. ZnCI2(aq) and NaSO4(aq) D. NaOH(aq) and HNO3(aq) |
A |
| 36. |
Which of the following substance is an alloy of lead? A. Brass B. Duralumin C. Stainless steel D. Soft solder |
D |
| 37. |
In which of the following processes is biotechnology not applied? A. Manufacture of drugs B. Treatment of domestic sewage C. Production of alcoholic beverages D. Electroplating of metals |
D |