Year :
2013
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
41 - 47 of 47 Questions
| # | Question | Ans |
|---|---|---|
| 41. |
A hydrocarbon compound contains 92.3% carbon Determine its empirical formula [H = 1.00; C = 12.0] A. CH B. CH2- C. CH3 D. C3H2 |
A |
| 42. |
The main function of limestone in the blast furnace is to A. act as catalyst B. act as reducing agent C. remove impurity D. supply carbon (IV) oxide |
C |
| 43. |
Which of the following raw materials is used in a plastic industry? A. Ethene B. Methane C. Calcium D. Hydrogen |
A |
| 44. |
Which of the following statements about fine chemical is correct? It A. is injurious to health B. has low degree of purity C. is produced in relatively small amount D. can be stored for a long time |
C |
| 45. |
Which of the following materials is classified as a non-biodegradable pollutant? A. Animal hide B. Paper C. Plastic D. Wood |
C |
| 46. |
Bronze is a mixture of A. Cu and Mg B. Cu and Sn C. Cu and Zn D. Cu and Pb Detailed SolutionBronze is an alloy consisting primarily of copper, tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon. |
|
| 47. |
Which of the following statements about thermoplastic material is correct? They A. do not melt on heating B. harden on heating C. decompose on heating D. soften and melt on heating |
D |
| 41. |
A hydrocarbon compound contains 92.3% carbon Determine its empirical formula [H = 1.00; C = 12.0] A. CH B. CH2- C. CH3 D. C3H2 |
A |
| 42. |
The main function of limestone in the blast furnace is to A. act as catalyst B. act as reducing agent C. remove impurity D. supply carbon (IV) oxide |
C |
| 43. |
Which of the following raw materials is used in a plastic industry? A. Ethene B. Methane C. Calcium D. Hydrogen |
A |
| 44. |
Which of the following statements about fine chemical is correct? It A. is injurious to health B. has low degree of purity C. is produced in relatively small amount D. can be stored for a long time |
C |
| 45. |
Which of the following materials is classified as a non-biodegradable pollutant? A. Animal hide B. Paper C. Plastic D. Wood |
C |
| 46. |
Bronze is a mixture of A. Cu and Mg B. Cu and Sn C. Cu and Zn D. Cu and Pb Detailed SolutionBronze is an alloy consisting primarily of copper, tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon. |
|
| 47. |
Which of the following statements about thermoplastic material is correct? They A. do not melt on heating B. harden on heating C. decompose on heating D. soften and melt on heating |
D |