Past Questions And Answers
If \(\frac{27^x \times 3^{1 - x}}{9^{2x}} = 1\), find the value of x.
- A. 1
- B. \(\frac{1}{2}\)
- C. -\(\frac{1}{2}\)
- D. -1
(a) Explain (i) refraction of a wave;
(ii) critical angle
(b) State two conditions necessary for (i) total internal reflection of a wave to occur
(ii) interference wave patterns to be formed
(c) The distance between two successive crests of a water wave travelling at 3.6ms\(^{-1}\) is 0.45m, calculate the frequency of the wave
(d) A ray of light is incident at an angle of 30° at an air-glass interface.
(i) Draw a ray diagram to show the deviation of the ray in the glass.
(ii) Determine the angle of deviation. [Refractive index of glass = 1.50]
View Discussion (0)WAEC 2005 THEORY.jpg)
CH2S(g) + O2(g) → 2Cn + SO2(g) What is the change in the oxidation number of copper in the reaction?
- A) 0 to + 2
- B) 0 to + 1
- C) C + 1 to 0
- D) + 2 to + 1
One of the reasons why Nigeria is a mono-economy is because of her _______
- A. huge volume of petroleum activities in the country
- B. diversification system of economic activities
- C. high demand for foreign commodities
- D. high rate of unemployment
According to James, trials have a salutary effects on Christians because , as a means of testing the faith, they produce in them
- A. knowledge of othe religions
- B. steadfastness leading to perfection
- C. adoration of the things of the world
- D. a manifestation of humility
Choose the interpretation that is most appropriate for each sentence.
We never expected that Father would read us the riot act. This means that our father
- A. taught us the riot act
- B. cautioned us 'not to be involved in riots
- C. warned us to stop making trouble
- D. encouraged us to make trouble
A major disadvantage of the arithmetic means is that it is
- A. not useful for large data
- B. not suitable for further statistical analysis
- C. cumbersome to determine the actual value
- D. affected by extreme data
Import substitution aims at?
- A. substituting agricultural products with industrial ones
- B. substituting imports with agricultural exports
- C. the diversification of industries
- D. improving the balance of payments
if the weight of five puppies in kilograms are 3.5, 3.0, 4.2, 5.0 and 4.3, then mean weight of the puppies is?
- A. 3.5 kg
- B. 4.0 kg
- C. 4.2 kg
- D. 5.0 kg
Choose the option that has the same stress pattern as the given word.
Student
- A. Refuse(N)
- B. Propose
- C. Rebel(V)
- D. Superb