Past Questions And Answers
''It is not good that the man should be alone; I will make him a helper fit for him'' After this statement, the first thing God did was to
- A. make a rib into a woman and bring her to the man
- B. take one of the man's ribs and close up its place with flesh
- C. cause a deep sleep to fall upon the man
- D. from beasts and birds and bring them to the man
(a) State the role of each of the following substances in the treatment of river water for town supply (i) Sand bed. (ii) Alum (iii) Chlorine
(b)(i) Give three major uses of H\(_2\)SO\(_4\)
(ii) Explain the following observation: A strip of blue litmus paper dropped into concentrated H\(_2\)SO\(_4\) becomes charred whereas in dilute H\(_2\)SO\(_4\), it turns red and is not charred.
(iii) Write an equation to show how concentrated H\(_2\)SO\(_4\) reacts with zinc.
(c)(i) List two gaseous pollutants that can be generated by burning coal.
(ii) Explain why coal burns more easily when it is broken into pieces than when it is in lump form.
(ii) What gas is responsible for most of the explosions in coal mines?
(iv) Name: the non-volatile residue left behind after the destructive distlillation of coal
(d)(i) What is meant by allotropy?
(ii) Name two crystalline allotropes of carbon
(iii) Name two elements apart from carbon, which exhibit allotropy
(iv) It is now known that carbon has an allotropic form called fullerene, containing molecules of formula C\(_{60}\). Calculate the mass of one mole of these molecules [C = 12]
View Discussion (0)WAEC 2003 THEORYTalle works as a ______?
- A. driver
- B. gateman
- C. cleaner
- D. government officer
Which of the following is not true about auxins? They
- A. are manufactured by plants
- B. are used in the site of production
- C. are normally present in minute quantities in the cells of plants
- D. regulate growth rate of plants
The resurrection story encourages Christians to believe that the Lord they adore is
- A. still alive today
- B. a miracle working God
- C. Lord over evils
- D. powerful and just
Which of the following statements about nuclear reaction is correct? The reaction
- A. involves neutrons only
- B. takes place inside the nucleus
- C. is governed by temperature and pressure
- D. involves protons and electrons only
The leader of the muslim emigrants Abyssinia was
- A. Ali b. Abi Talib
- B. Amr b. Al As
- C. Jafar b.Abi Talib
- D. Uthman b . Affan
The colour of phenolphthalein indicator in dilute HNO is
- A. colourless
- B. orange
- C. pink
- D. purple
According to Amos, what did the Israelites do after God smote them with blight and mildew?
- A) They still did not return to him
- B) They repented of their sins
- C) They fasted and prayed for healing
- D) They cried unto the LORD
Which of the following compounds is formed by the oxidation of ethanol?
- A. C2H4CO2H
- B. C2H5CO2H
- C. CH3OH
- D. CH3CO2H