Past Questions And Answers
A radio wave has a wavelength of 150m. If the velocity of radio waves is free spaces is 3 x 10\(^8\) ms\(^{-1}\), calculate the frequency of the radio wave
- A. 4.50 x 1010Hz
- B. 5.0 x 109Hz
- C. 4.5 x 109Hz
- D. 2.0 x 106Hz
Calculate, correct to one decimal place, the standard deviation of the numbers: -1, 5, 0, 2 and 9.
- A. 7.2
- B. 6.6
- C. 3.6
- D. 3.2
Write on Suratul Nasr (Q.110) either in Arabic or transliteration, translate it into English and comment on it.
View Discussion (0)WAEC 2018 THEORYFind the value of x and y in the simultaneous equation: 3x + y = 21; xy = 30
- A. x = 3 or 7, y = 12 or 8
- B. x = 6 or 1, y = 11 or 5
- C. x = 2 or 5, y = 15 or 6
- D. x = 1 or 5, y = 10 or 7
Consider the reaction represented by the following equation: Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g) what volume of hydrogen gas is produced at s.t.p. when 3.25 g of zinc reacts with excess dilute HCI? [Zn = 65, Molar gas volume at s.t.p. = 22.4 dm3]
- A. 1.12 dm3
- B. 2.24dm3
- C. 4.48dm3
- D. 8.96dm3
Which of the following controls a limited liability company?
- A. the general manager
- B. the managing director
- C. tax payers
- D. the board of directors
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
John should be through with his work,_______?
- A. can't he
- B. didn't he
- C. shouldn't he
- D. isn't it
3a. What are the roles played by Jezebel in the death of Naboth?
3b. Reasons why people are greedy.
View Discussion (0)WAEC 2021 THEORYWhich of the following is not a function of commerce?
- A) Advertising goods
- B) Increasing profit made
- C) Creation of goods
- D) Distribution of goods
The selling of new shares to existing shareholders is referred to as
- A) Public issue
- B) Offer for sale
- C) Rights issue
- D) Bonus issue

