Past Questions And Answers
This question is based on General Literary Principles.
When a writer refers to past events to throw light on current ones he is employing
- A. retrospection
- B. flashback
- C. historical drama
- D. dramatic shift
The author of The Life Changer holds a degree in ______
- A. BSc (Ed) Mathematics
- B. BA (Ed) English Language
- C. BA (Ed) Economics
- D. BA Mass Communication
Which of the following is likely to be found in an oasis in the Sahara Desert?
- A. Raffia palm
- B. Oil palm
- C. Date palm
- D. Dum palm
Study the table below and use it to answer the question
| Cost Price (N) | Useful life (Years) | Salvage value (N) | Annual depreciation (N) | Total depreciation |
| 20000 | Y | 5000 | 1000 annum | 15000 |
| 60000 | 10 | 18000 | 4200 annum | Z |
The total depreciation represented by Z in the illustrated table is
- A. N 42,000
- B. N 78,000
- C. N 22,200
- D. N 55,800
(a) Explain briefly why \(_2^4He\) has a stable electron configuration compared to \(_4^9Be\)
(b) Consider the following elements: 1H and 3Li.
(i) State the number of electrons that an atom of each element would have after forming an ionic bond.
(ii) Give a reason for each of your answers stated in (b)(i).
(c) Statetwo factors that should be considered when siting a chemical industry.
(d) Statetwo advantages of using a catalyst instead of high temperatures in chemical reactions.
(e) Turpentine burns in chlorine according to the following equation:
C\(_{10}\)H\(_{16}\)\(_{(I)}\) + 8Cl\(_{2(g)}\) \(\to\) 10C\(_{(s)}\) + 16HCl\(_{(g)}\)
Calculate the mass of turpentine that would completely burn in 21.3 g of chlorine.
[Molar mass of chlorine = 71 gmol\(^{-1}\); Molar mass of Turpentine = 136 gmol\(^{-1}\)]
(f) What is cracking?
(g) Statetwo factors that may influence the value of electron affinity.
(h) What are carbohydrates?
(i) Statetwo differences between a simple sugar and starch.
(j) Write an equation to show the dissociation ofeach of the following acids:
(i) H\(_2\)CO\(_3\);
(ii) CH\(_3\)COOH.
View Discussion (0)WAEC 2019 THEORYSedimentary rocks are easily recognized in the field because they?
- A. form round hills
- B. are faulted
- C. form vertical columns
- D. occur in layers
UNIFORM: SECURITY AGENT
- A. gentle: heart
- B. SIM Card: mobile phone
- C. Pressing Iron: desk
- D. Diluted: gas
Which of the following statement is not correct about esterification?
- A. It is a slow reaction
- B. the process is reversible
- C. it is similar to hydrolysis
- D. it is catalysed by acids
Which of the following is not a tool of sales promotion?
- A. Pricing policies
- B. Premium
- C. Displays
- D. Free Samples
An element which exists in more than one crystalline form is said to exhibit
- A) polymorphism
- B) isotopy
- C) allotropy
- D) isomerism