Past Questions And Answers
Consider the equilibrium reaction represented by the equation: 2SO2(g) + O(g) ⇌ 2SO3(g) ΔH = - 197 kJmol-1. At equilibrium, increase in the total pressure of the system brings about
- A. decrease in rate of the reaction of the system
- B. decrease in temperature of the system
- C. increase in temperature of SO3
- D. increase in concentration of SO2
Salma and her roommates were _________
- A. A students
- B. Outstanding students
- C. B students
- D. Average students
The overriding portion of the thrust fold is termed
- A. a simple fold
- B. an overfold
- C. a syncline
- D. a nappe
One of the ways by which Islamic civilization was manifested in West Africa was
- A. the employment of scholars of Arabic as envoys by kings and emperors
- B. construction of palaces based on Arab technology
- C. establishment of universities to train scientists
- D. recruitment of Muslim medical personnel to man health institutions
COAGULANT: BLEEDING
- A. Stimulant: relaxation
- B. Antibiotic: infection
- C. Enzyme: digestion
- D. Narcotic: dependency
A movement along the same demand curve is caused by the
- A. price of the product
- B. price of other products
- C. income of the consumer
- D. taste of the consumer
the study of Economics enables the individuals to
- A. be misserly in the spending of his money
- B. derive maximum satisfaction from the money he spends
- C. determines the right market to visit
- D. avoids purchase of luxurious items
The foot of a ladder is 6m from the base of an electric pole. The top of the ladder rest against the pole at a point 8m above the ground. How long is the ladder?
- A. 14m
- B. 12m
- C. 10m
- D. 7m
A fiscal policy instrument that can influence the demand pattern in an economy is
- A. government spending
- B. interest rate
- C. income tax
- D. tariff
(a) Copy and complete the table of values, correct to one decimal place, for the relation \(y = 3\sin x + 2\cos x\) for \(0° \leq x \leq 360°\).
| x | 0° | 30° | 60° | 90° | 120° | 150° | 180° | 210° | 240° | 270° | 300° | 330° | 360° |
| y | 3.0 | 1.6 | -2.0 | -3.6 | -3.0 | 2.0 |
(b) Using scales of 2cm to 30°mon the x- axis and 2cm to 1 unit on the y- axis, draw the graph of the relation \(y = 3\sin x + 2\cos x\) for \(0°\leq x \leq 360°\).
(c) Use the graph to solve :
(i) \(3\sin x + 2\cos x = 0\)
(ii) \(2 + 2\cos x + 3\sin x = 0\).
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