He is a faithful liar

The line above is an example of

• A. euphemism
• B. antithesis
• C. epigram
• D. oxymoron

In the diagram O and O' are the centres of the circles radii 15cm and 8cm respectively. If PQ = 12cm, find |OO'|.

• A. 8.46cm
• B. 19.04cm
• C. 20.81cm
• D. 26.16cm

If Karamo who lives in The Gambia imports goods from Senegal and later sells them in Guinea Bissau; Karamo is engaged in

• A. multi-lateral trade
• B. counter trade
• C. barter trade
• D. entrepot trade

The IUPAC name of the compound CF 3 CHBrCl is

• A) 2-chloro-2-bromo-1,1,1-trifluoroethane
• B) 2-bromo-2-chloro-1,1,1-trifluoroethane
• C) 1-bromo-1-chloro-2,2,2-trifluoroethane
• D) 1,1,1-trifluoro-2-bromo-2-chloroethane

The electromagnetic wave that can produce a heating effect on the environment is

• A. x -rays
• B. ultraviolet rays
• C. infrared rays
• D. gamma rays

Kakaku limited with three departments has a total of N7,200,000 as net debtors for the year ended 31/12/2106. The company's policy, provides for 15%bad debt annually. Which of the following represents the total balance of debtors before adjustment?

• A. N6,120,000
• B. N8,280,000
• C. N6,120,300
• D. N8,820,000

A magnetic field is said to exist at a point if a force is

• A. exerted on a stationary charge at the point
• B. exerted on a moving charge at the point
• C. deflected at the point
• D. strengthened at the point

A stable self-sustaining environment produced by an interaction between the biotic and abiotic components is best described as

• A. a niche
• B. a community
• C. an ecosystem
• D. a habitat

Which of the following is the best way to reduce surface run-off on farmlands?

• A. adding more clay to the soil
• B. providing adequate plant cover
• C. planting acrss the slope
• D. planting annual crops

(a) If \(x = \begin{pmatrix} 2 \\ 3 \end{pmatrix}, y = \begin{pmatrix} 5 \\ -2 \end{pmatrix}\) and \(z = \begin{pmatrix} -4 \\ 13 \end{pmatrix}\), find the scalars p and q such that \(px + qy = z\).

(b)(i) Using the scale of 2cm to 2 units on both axis, draw on a graph paper two perpendicular axis x and y for \(-5 \leq x \leq 5, -5 \leq y \leq 5\) respectively.

(ii) Draw, on the graph paper, indicating clearly the vertices and their coordinates,

(1) the quadrilateral WXYZ with W(2, 3), X(4, -1), Y(-3, -4) and Z(-3, 2).

(2) the image \(W_{1}X_{1}Y_{1}Z_{1}\) of the quadrilateral WXYZ under an anti-clockwise rotation of 90° about the origin where \(W \to W_{1}, X \to X_{1}, Y \to Y_{1}\) and \(Z \to Z_{1}\).