Past Questions And Answers
The excretory organ in insects is the
- A. kidney
- B. malpighian tubule
- C. flame cell
- D. nephridium
An institution of government that makes bye-laws is the
- A. judiciary
- B. executive
- C. legislature
- D. local authorities
The major contribution of OPEC to the Nigerian economy is the
- A. provision of social infrastructures
- B. granting of subsidies on petroleum products
- C. stabilization of oil prices
- D. building of refineries
(a) Solve the equation, correct to two decimal places \(2x^{2} + 7x - 11 = 0\)
(b) Using the substitution \(P = \frac{1}{x}; Q = \frac{1}{y}\), solve the simultaneous equations : \(\frac{2}{x} + \frac{1}{y} = 3 ; \frac{1}{x} - \frac{5}{y} = 7\)
View Discussion (0)WAEC 1991 THEORYIn Romans, Paul condemned sin taking over mortal bodies in the new life as instruments of
- A) greediness
- B) wickedness
- C) sadness
- D) foolishness
(a) Copy and complete the table of values for the relation y = 3 sin 2x.
| x | o\(^o\) | 15\(^o\) | 30\(^o\) | 45\(^o\) | 60\(^o\) | 75\(^o\) | 90\(^o\) | 105\(^o\) | 120\(^o\) | 135\(^o\) | \(^o\) |
| y | 0.0 | 1.5 | -2.6 |
(b) Using a scale of 2 cm to 15° on the x-axis and 2cm to I unit on the y-axis, draw the graph of y = 3 sin 2x for 0° \(\geq\) x \(\geq\) 150°.
(c) Use the graph to find the truth set of;
(i) 3 sin 2x + 2 = 0;
(ii ) \(\frac{3}{2}\) sin 2x = 0.25.
View Discussion (0)WAEC 2020 THEORYWhich of the following is not done by the NNPC?
- A. production of crude oil
- B. Refining of crude oil
- C. Exploration for crude oil
- D. Pricing of crude oil
Which of the following indicates the correct sequence of steps taken in charging a gold-leaf electroscope by induction? l. Removing the ebonite rod ll. Bringing a negatively charged ebonite rod close to the cap III. Earthing the cap IV. Disconnecting the earthing
- A. III, II, I and IV
- B. II, I, III and IV
- C. III, IV II and I
- D. II, III, IV and I
By-products of livestock used as feed ingredients in poultry ration include
- A. hides and hoofs
- B. blood and bones
- C. feathers and fur
- D. skin and bones
At what angle to the horizontal must the nozzle of a machine gun be kept when firing to obtain a maximum horizontal range for the bullets?
- A. 0.0°
- B. 22.5°
- C. 30.0°
- D. 45. 0°

