Past Questions And Answers
Who among the following is not a foremost Nigerian nationalist?
- A. Sir Abubakar Tafawa Balewa
- B. Dr. Nnamdi Azikwe
- C. General Yakubu Gowon
- D. Chief Obafemi Awolowo
What is the term given to the action of discontinuing a session of a parliament or other legislative assembly without dissolving
- A. Adjournment
- B. Postponement
- C. Prorogation
- D. Recess
(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 THEORYAny paid form of non-presentation of goods services by an identified sponsor is known as?
- A. merchandising
- B. advertising
- C. publicity
- D. public relations
Liquid black soap is made by boiling palm oil with liquid extract of ash. The function of the ash is to provide the ?
- A. Acid
- B. Ester of alkanoic acid
- C. Alkali
- D. Alkanol
Which of the following is not the duty of an agent to the principal?
- A. Acting in good faith
- B. Rendering accurate account
- C. Disclosing all profits made
- D. Making secret profit
Qiyas in Islamic law refers to
- A. Measurement
- B. Analogical deduction
- C. Intelligent work
- D. evaluation
The sun is vertically overhead at the tropic of Caprison in
- A. September 23rd
- B. March 21st
- C. June 21st
- D. December 22nd
The minimum number of share holders for joint stock companies is_______________
- A. 4
- B. 2
- C. 7
- D. 3
Beriberi is caused by deficiency of vitamin ________
- A) A
- B) D
- C) K
- D) B