Past Questions And Answers
The primary or initial documents used to record or capture business transactions immediately they take place is known as:
- A) Debit and credit documents
- B) Receipt
- C) Source documents
- D) Invoice
(a)(i) List two elements which react with steam at red heat to produce hydrogen.
(ii) Explain why an aqueous solution of potassium bromide turned reddish brown on bubbling chlorine through it.
(iii) Write an equation for the reaction in (a)(ii).
(b)(i) Name two types of chemical industry that use limestone as raw material.
(ii) Give one example of hygroscopic substances.
(iii) Copy and complete the table below.
Salt to be prepared | Starting material | Method of preparation |
| PbSO\(4\) | Pb(NO\(_3)_{2(ag)}\) | - |
| KNO\(_3\) | KOH | Neutralization |
| CaCl\(_2\) | CaCO\(_3\) | - |
| FeCl\(_3\) | Fe\(_(s)}\) | - |
| CuSO\(_4\) | CuO | - |
(c) In the contact process for the manufacture of tetraoxosulphate (VI) acid;
(i) State how sulphur (IV) oxide is obtained;
(ii) Write an equation for the reaction that takes place in the catalyst chamber;
(iii) Give the steps required to convert sulphur (VI) oxide to acid.
(d)(i) List two disadvantages of hard water.
(ii) Mention three methods which can be used to remove both permanent and temporary hardness in water at the same time.
(iii) State the role of alum and chlorine respectively in the purification of water for town supply.
View Discussion (0)WAEC 1999 THEORYThe foot and mouth disease of cattle is caused by a
- A. virus
- B. bacterium
- C. fungus
- D. nematode
The book of Hadith that contains reports on the practices of the people of Madinah apart from ahadith is
- A. Sahih Bukhari
- B. Sahih Muslim
- C. Mukhtaril ahadith
- D. Muwatta Malik.
From the words lettered A to D, choose the word that best completes each of the following sentences.
The team manager looked.......when his boys lost the match
- A. down
- B. denied
- C. dejected
- D. deserted
Based on the fact that demand curve shows the maximum price at which consumers will buy, it then shows
- A) average benefit
- B) marginal benefit
- C) total benefit
- D) optimal satisfaction
Files that contain machine language instructions are called?
- A. interpreter files.
- B. executable files
- C. batch files
- D. source files.
Though he is our elected representative, he often takes a rather jaundiced view of our problems.
- A. He takes a rather hazy view of our problems
- B. He takes an unfavourable position concerning our problems
- C. He takes a rather forceful view of our problems
- D. He takes a sickly view of our problems
(a) What five advantages could be derived when countries trade with one another?
(b) Highlight four factors which influenced the trade between Nigeria and Canada.
View Discussion (0)WAEC 1996 THEORYThe breakdown of the McPherson Constitution was partly caused by the crisis within the
- A. NCNC
- B. AG
- C. NPC
- D. NNDP