Past Questions And Answers
According to mark's gospel, Jesus was baptized by John the Baptist after He came from
- A. Capernaum
- B. Judea
- C. Nazarath
- D. Bethlehem
A tractor-mounted sprayer used on large scale farms is the
- A. electrodyne sprayer
- B. motorised sprayer
- C. knapsack sprayer
- D. boom sprayer
An increase in money supply, other things being equal, will?
- A. lower interest rates
- B. reduce income
- C. ensure trade balance
- D. increase money demand
The maximum and minimum thermometer is used to measure
- A. light intensity
- B. highest and lowest temperature of the day
- C. atmospheric pressure
- D. highest and lowest amount of rainfall in a month
Sister chromatids are:
- A) two identical copies of a single chromosome produced during s-phase
- B) pairs of chromosomes
- C) points of attachments of centromeres to the chromosomes
- D) chromosomes found in cells of sisters
(a) Highlight the main features of God's covenant with Abraham
(b) State three reasons for covenant relationships.
View Discussion (0)WAEC 2011 THEORYThe operation of an optical fibre is based on the principal of
- A. dispersion of light
- B. interference of light
- C. refraction of light
- D. polarization of light
(a) In an equilibrium reaction between gases Q and R, to form QR, the energy content of the reactants is 100 KJ and that of the product is 54 kJ. The energy content of the activated complex is 210 KJ.
(i) Draw an energy profile diagram for the reaction. (ii) Determine the: I. activation energy of the reaction il. enthalpy change ΔH of the reaction. (iii) Write a balanced equation for the reaction. (iv) Give a reason for the answer given in 3(C)(iv). (iv) State whether the reaction is exothermic or endothermic.
(b) Consider the following table:
| Element | E | F | G | H |
| Atomic number | 7 | 9 | 12 | 13 |
(i) Write the electron configuration for each of the elements. Element E, F, G, H 12 13 (ii) State: I. two elements that are metals; II. the elements(s) most likely to form an ion with a charge of +3; III. the element(s) which belong(s) to group VII. on the periodic table; IV. the formula of the compound formed between F and G. Atomic
(c) Define the term isotopy (d) Name the three building blocks of matter.
View Discussion (0)WAEC 2020 THEORYWhich of the following is/are necessary for the production of interference with two wave trains? I. The sources must be close to each other. II The waves must have the same frequency. III. The waves must have the same amplitude. IV. The waves must travel with the speed of light.
- A. I, II and IV only
- B. I, II and III only
- C. I and II only
- D. II, III and IV only
Gamma rays are produced when?
- A. high velocity electrons are abruptly stopped in metals
- B. energy changes occur within the nuclei of atoms
- C. energy changes occur within the electronic structure of atoms
- D. electrons are deflected in very strong magnetic fields