Dissolving some pellets of NaOH in water would result in

• A. a decrease in the free energy of the solution
• B. a decrease in the entropy of the solution
• C. a lowering of the temperature of te solution
• D. an increase in the entropy of the solution

Write aQBASIC program to grade any score entered from the keyboard as either "Poor" for a score that is below 50% or "Satisfactory" for a score that is equal to or above 50%. The program execution should stop as soon as a score that is less than zero is entered.

A capacitor of 10μF is connected across a cell of 12 volts as shown below, calculate the energy stored in the capacitor

• A. 7.2 x 10^-4J
• B. 1.4 x 10^-3J
• C. 1.4 x 10^-3J
• D. 1.2 x 10^-2J

Another name for the core of the earth is

• A. lithosphere
• B. barosphere
• C. troposphere
• D. endosphere

(a) Copy and complete the table for the relation \(y = 2 \cos 2x - 1\).

(b) Using a scale of 2cm = 30° on the x- axis and 2cm = 1 unit on the y- axis, draw the graph of \(y = 2 \cos 2x - 1\) for \(0° \leq x \leq 180°\).

(c) On the same axis, draw the graph of \(y = \frac{1}{180} (x - 360)\)

(d) Use your graphs to find the : (i) values of x for which \(2 \cos 2x + \frac{1}{2} = 0\); (ii) roots of the equation \(2 \cos 2x - \frac{x}{180} + 1 = 0\).

This question is based on Ahmed Yerima's Attahiru.

Form the viewpoint of the British government, the attack on the Sokoto Caliphate is

• A. one of superiority
• B. a war of attrition
• C. one of vengeance
• D. a jihad

The following are features of Northern Guinea Savanna except

• A. presence of tall trees with thick bark
• B. bare soil with very few trees
• C. presence of fire-resistant trees
• D. predominance of woody trees

This question is based on Literary Appreciation

He was an odd-looking duck, Inman was.

He was in his mid-fifties but still had a head of thick black hair, which began low on his forehead and was slicked back over his small round.

He seemed to be made of a series of balls piled one atop the other.

Tom Wolfe: A Man in Full

The author's attitude to inman in the passage above is one of

• A. ridicule
• B. praise
• C. hatred
• D. admiration

The executive head who was responsible for British colonial territories in West Africa was the

• A. Lord Chancellor
• B. heir to the British throne
• C. warrant chief
• D. Secretary of State

From the list of words lettered A to D, choose the one that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentence.

Thegullible and not the_______usually fall prey to tricksters.

• A. unfriendly
• B. carefree
• C. brave
• D. discerning