Past Questions And Answers
Fasting has been prohibited on doubtful day which is
- A. 28th of Shaaban
- B. 1st of Ramadan
- C. 30th of Ramadan
- D. 30th of Shaaban
1. (a )Define the term compound.
(b) Statetwo conditions necessary for the cracking of petroleum fractions.
(c)Name two transition elements that are used as catalyst.
(d) (i) Write an equation for the reaction between zinc dust and trioxonitrate (V) solution.
(ii) Which of the reactants in 1(d)(i) is:
I. reduced;
II. oxidized.
(e)Two isotopes of oxygen 16O and 18O have relative abundance of 90 % and 10 % respectively. Calculate the relative atomic mass of oxygen.
(f) List two ores of iron.
(g) (i) What is biotechnology?
(ii) Name one product that can be obtained using biotechnology.
(h) Define the term element.
(i) Statetwo sources of methane in the atmosphere.
(j) Explain briefly why the trend of the boiling points for group VII elements is in the order I\(_2\) > Brl\(_2\)> Cl\(_2\).
View Discussion (0)WAEC 2018 THEORYIf the gradient of the curve y = 2kx2 + x + 1 at x = 1 is 9, find k.
- A. 4
- B. 3
- C. 2
- D. 1
Which of the following is the most complex according to their cellular level of organization?
- A. Heart
- B. Hair
- C. Euglena
- D. Hydra
''Whoever does not come out after Saul and Samuel, so shall it be done to his oxen!'' what made the people respond to Saul's statement above?
- A. The power of the LORD came upon them
- B. The dread of the LORD fell on them
- C. The Spirit of the LORD came upon them
- D. The word of the LORD came to them
Human trafficking results into all of the following except?
- A. prostitution
- B. migration
- C. criminality
- D. welfarism
Three students are working independently on a Mathematics problem. Their respective probabilities of solving the problem are 0.6, 0.7 and 0.8. What is the probability that at least one of them solves the problem?
- A. 0.024
- B. 0.336
- C. 0.664
- D. 0.976
Given that X : R \(\to\) R is defined by x = \(\frac{y + 1}{5 - y}\) , y \(\in\) R, find the domain of x.
- A. {y : y \(\in\) R, y \(\neq\) 0}
- B. {y : y \(\in\) R, y \(\neq\) 1}
- C. {y : y \(\in\) R, y \(\neq\) 5}
- D. {y : y \(\in\) R, y \(\neq\) 7}
(a) Using mathematical tables, find ; (i) \(2 \sin 63.35°\) ; (ii) \(\log \cos 44.74°\);
(b) Find the value of K given that \(\log K - \log (K - 2) = \log 5\);
(c) Use logarithm tables to evaluate \(\frac{(3.68)^{2} \times 6.705}{\sqrt{0.3581}}\)
View Discussion (0)WAEC 1995 THEORYA girl stand 80m away from a tall cliff and blows a whistle. If the speed of sound in air is 330ms-1, how long would it take for her to hear the echo of the sound?
- A. 2.062s
- B. 0.970s
- C. 0.485s
- D. 0.242s

