Past Questions And Answers
Delegated legislation is made by bodies other than the
- A. president
- B. governor
- C. parliament
- D. judiciary
If you are the Son of God, throw yourself down from here; for it is written, 'He will give his angels charge of you... According to Luke, the statement above was made by Satan during Jesus'
- A) third temptation
- B) crucifixion
- C) Transfiguration
- D) second temptation
(a)(i) Draw and label a simple cell for the electrolytic purification of copper.
(ii) Write can equation for the reaction at each electrode in (a)(i) above.
(iii) State with reason whether the Daniell cell is an electrolytic cell or an electrochemical cell.
(iv) What is the function of MnO\(_2\) in the Laclanche cell?
(b) Consider the following equation: MnO\(^-_4\) + 8H\(^+\) + xe\(^-\) \(\to\) Mn\(^{2+}\) + yH\(_2\)O. State the
(i) values of x and y;
(ii) oxidation state of Mn in MnO\(^-_4\).
(c)(i) List three factors that affect selective discharge of ions during electrolysis
(ii) State Faraday's second law of electrolysis.
(iii) A voltameter containing silver trioxonitrate(V) solution was connected in series to another voltameter containing copper (II) tetraoxosulphate(VI) solution. When a current ri 0.200 ampere was passed through the solutions, 0.780g of silver was deposited. Calculate the
I. mass of copper that would be deposited in the copper voltameter
II. quantity of electricity used and the time of current flow. [Cu = 63.5 ; Ag = 108; 1F = 96500C]
View Discussion (0)WAEC 2001 THEORYAll living things
- A) photosynthesize
- B) respire
- C) move
- D) transpire
Long-term loans can be secured from
- A. Commercial banks
- B. discount houses
- C. development banks
- D. acceptance houses
(a)(i) Draw the energy profile diagram for the reaction; H\(_{2(g)}\) + I\(_{2(g)}\) \(\to\) 2Hl\(_{(g)}\); \(\Delta\)H = –13 KJ mol\(^{-1}\)
(ii) If the concentration of HI\(_{(g)}\) increases from 0.000 to 0.002 mol dm\(^{-3}\) in 80 seconds, what is the rate of t reaction?
(b)(i)Give one use of each of the following compounds: I. NaHCO\(_{3}\); II. CaSO\(_{4}\); III. CaCO\(_{3}\).
(ii) State a drying agent that can be used for each of the following gases: I. SO\(_{2}\); II. HCI; Ill. NH\(_{3}\)
(c)(i) Write an equation for the complete combustion of carbon in oxygen.
(ii) Calculate the number moles of carbon (IV) oxide produced from the complete combustion of 2.5 g of carbon. [ C = 12.0, O = 16]
(iii) Mention one use of I. carbon (II) oxide; II. carbon (IV) oxide.
(d) An industrial raw material has the following composition by mass:
Iron = 28.1%; Chlorine = 35.7%; Water cf crystallization = 36.2%.
Calculate the formula for the material. [H = 1.00, O = 16.0, CI = 35.5, Fe = 56.0]
(e) Give one example of a (i) metal that is liquid at room temperature,
(ii) non-metal that is liquid room temperature.
View Discussion (0)WAEC 2011 THEORYA woman monthly salary is 50,000. She has five children and gives each of them 3,150 per month as pocket money. If she sees 10% of the salary on monthly basis. How much is left for her to spend on other contingencies?
- A. 17,750
- B. 29,250
- C. 28,700
- D. 20,700
Formation of blisters on the mouth and the skin around the hoof of farm animals is a symptom of
- A. rinderpest
- B. anthrax
- C. Newcastle disease
- D. foot and mouth disease
UNSEEN PROSE AND POETRY
Read the passage below and answer the following questions:
Along marched the crowd, determined not to be distracted from its cause and the course it had charted. If anyone could intimidate the chief, it was Sasu, who led the crowd. The chief nurtured unruffled restraint. He knew Sasu, knew that Sasu would not waste the trust between them on renegades.
One way to divert a mob from its goal is to join in with it, lead it on, but, finally, veer it from the course of its cause. Onward, towards the chief's palace marched the crowd, singing war songs.
The sun frowned as the palace guards, rattling like leaves in a storm - fear branded on their faces, came out to survey the threatening crowd and prepare for a siege. Just then, Sasu turned about, heading away from the palace - with the crowd, and the war songs.
The last paragraph illustrates- A. anti-climax
- B. rising action
- C. suspense
- D. foreshadow
The accounting concept that allows the cost of kitchen cutlery to be expensed, though it can be used for more than one year is
- A. Materiality
- B. Accrual
- C. Going concern
- D. Business entity

