Past Questions And Answers
Differentiate (cos θ - sin θ)2
- A. -2 cos 2θ
- B. -2 sin2θ
- C. 1 - 2 cos 2θ
- D. 1 - 2 sin 2θ
Using specific examples, describe how each of the following factors affect the vegetation of Africa;
(a) Rainfall (b) Altitude (c) Soil type
View Discussion (0)WAEC 1999 THEORYMuscle fatigue in the body of an athlete is due to__________
- A. low pH
- B. high oxygen content
- C. accumulation of lactic acid
- D. accumulation of carbonic acid
Use the information below to answer the question
| Gross profit b/d Less: Salaries and wages Electricity Depreciation Net profit c/d | Dept A ₦ 6,000 1,800 ? 600 ? 6,000 | Dept B ₦4,000 1,200 ? ?1,600 4,000 | Total ₦ 10,000 3,000 2,000 1,000 4,000 10,000 |
It is the tradition of the organization to apportion expenses in the proportion 60%:40% for A and B respectively.
What is the net profit made by department A?
- A. ₦2000
- B. ₦3600
- C. ₦3000
- D. ₦2400
The sector which contribute highly to the economy is___________
- A. Primary sector
- B. Secondary sector
- C. Tertiary sector
- D. Education sector
The condition that encourages denitrification is
- A. low soil oxygen
- B. high soil nitrogen
- C. absence of soil bacteria
- D. lightening and thunderstrom
A body of mass, M, moving with velocity, V, has a wavelength, X, associated with it. This phenomenon is called----------
- A. photoelectric effect
- B. heisenberg's uncertainty principle
- C. compton effect
- D. wave-particles paradox
Which of the following explains why trioxonitrate (V) acid is not used for preparing hydrogen from metals?
- A. it is volatile
- B. it is strongly oxidizing
- C. it forms a layer of oxide on the metal
- D. trioxonitrate (V) salts are soluble in water
The main factor which affects the speed of sound wave is the?
- A. properties of the medium
- B. amplitude of the sound wave
- C. intensity of the sound wave
- D. loudness of the sound wave
When Eve was about to be created, God did all the following except
- A. causing a deep sleep to fall on Adam
- B. taking a rib from Adam's side
- C. covering where he removed the rib with a bone
- D. using the rib to create Eve