Year :
2012
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
41 - 44 of 44 Questions
| # | Question | Ans |
|---|---|---|
| 41. |
Which of the following pollutants is not usually recycled? A. Aluminium cans B. Glass bottles C. Nuclear wastes D. Paper wastes |
C |
| 42. |
A metal that is widely used in the manufacture of paints and overhead electric cables is A. aluminium B. copper C. iron D. lead |
A |
| 43. |
Brass is a mixture of A. Cu and Sn B. Cu and Zn C. Cu and Mg D. Cu and Pb Detailed SolutionBrass is an alloy made from copper and zinc. Unlike pure metals, most alloys do not have a single melting point, but a melting range in which the material is a mixture of solid and liquid phases. |
|
| 44. |
Which of the following substances is mainly responsible for the depletion of the ozone layer? A. Oxgyen B. Chlorofluorocarbon C. Carbon (ll) oxide D. Nitrogen (ll) oxide Detailed SolutionOzone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere |
| 41. |
Which of the following pollutants is not usually recycled? A. Aluminium cans B. Glass bottles C. Nuclear wastes D. Paper wastes |
C |
| 42. |
A metal that is widely used in the manufacture of paints and overhead electric cables is A. aluminium B. copper C. iron D. lead |
A |
| 43. |
Brass is a mixture of A. Cu and Sn B. Cu and Zn C. Cu and Mg D. Cu and Pb Detailed SolutionBrass is an alloy made from copper and zinc. Unlike pure metals, most alloys do not have a single melting point, but a melting range in which the material is a mixture of solid and liquid phases. |
|
| 44. |
Which of the following substances is mainly responsible for the depletion of the ozone layer? A. Oxgyen B. Chlorofluorocarbon C. Carbon (ll) oxide D. Nitrogen (ll) oxide Detailed SolutionOzone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere |