Paper 1 | Objectives | 50 Questions
WASSCE/WAEC MAY/JUNE
Year: 2021
Level: SHS
Time:
Type: Question Paper
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# | Question | Ans |
---|---|---|
1. |
The hydrolysis of proteins by diluting mineral acids produces A. sucrose B. glucose C. amino acids D. fatty acids |
C |
2. |
Which of the following oxide causes acid rain? A. CO B. NO C. H\(_{2}\)O\(_{2}\) D. NO\(_{2}\) |
D |
3. |
The ratio of carbon atoms of hydrogen atoms in a hydrocarbon is 1:2. If its molecular mass is 56, what is its molecular formula? A. C\(_{3}\)H\(_{6}\) B. C\(_{4}\)H\(_{8}\) C. C\(_{2}\)H\(_{4}\) D. CH\(_{2}\) |
B |
4. |
What is the relative molecular mass of the compound below A. 137 B. 136 C. 64 D. 59 |
B |
5. |
Cathodic protection of metals is based on A. standard electrode potential of hydrogen B. its electrical conductivity C. nature of oxides formed D. relative tendencies of oxidation |
D |
6. |
If humid air is polluted by chlorine discharged, the air can be restored by sprinkling A. solid MnO\(_{2}\) B. acidified KMnO\(_{4}\) C. acidified FeSO\(_{4}\) D. saturated NaCl(aq)
Show Content
Detailed Solutionl(aq) |
|
7. |
The alkanol represented by the structure below is A. primary and dihydric B. secondary and monohydric C. tertiary and dihydric D. secondary and dihydric |
A |
8. |
Which of the following pairs of compounds would form a precipitate when their aqueous solutions are mixed? A. NaCl and KNO\(_{3}\) B. KCL and NaNO\(_{3}\) C. K\(_{2}\)SO\(_{4}\) and BaCl\(_{2}\) D. NH\(_{4}\)NO\(_{3}\) and CO\(_{3}\) |
B |
Study the graphs below and use them to answer the question below. |
||
9. |
Which of the following illustrates the variation of the rate of evolution of gas from a given length of magnesium ribbon (y-axis) with an increase in the concentration of the added (x-axis)? A. I B. II C. III D. IV |
A |
10. |
Which of the graphs illustrates the variation of the pH of a given volume of strong acid solution (y-axis) with the volume of strong base titrated against its (x-axis)? A. I B. II C. III D. IV |
A |
Preview displays only 10 out of the 50 Questions