If an element with high electron affinity combines with another element with low ionization energy the bond formed will be mainly

• A. covalent
• B. ionic
• C. dative
• D. metallic

Which of these is the main source document for recording cash paid into bank?

• A. invoice
• B. cheque book
• C. credit note
• D. pay-in-slip

Which of the following best explains why wind action is more predominant in Arid regions than in Humid regions?

• A. Loose surface materials and the absence of vegetation cover
• B. Excessively high temperature during the day and night
• C. Insufficient and unreliable rainfall
• D. Lack of surface drainage and the presence of strong winds

How many times does the word al Qadr occur in Quran chapter 97?

• A. 3
• B. 2
• C. 5
• D. 4

The single most successful large-scale irrigation project in tropical Africa is the?

• A. VOLT RIVER Project
• B. Chad Basin Project
• C. Gezira Scheme
• D. Nile Delta Scheme

The table below shows the mark distribution of candidates in an aptitude test for selection into the public service.

(a) Make a cumulative frequency for the distribution

(b) Draw the cumulative frequency curve.

(c) From your graph, estimate the median mark.

(d) The cut-off mark was 63%. What percentage of the candidates was selected?

The wearing away of the sides and bottom of a river channel is called

• A. corrosion
• B. suspension
• C. corrasion
• D. solution

The diagram below represents the graph of the force applied in stretching a spiral spring against the corresponding extension produced within its elastic limit.

Using the notations on the graph, determine the:

(a) force constant of the spring;

(b) work done in stretching the spring from 10 x 10\(^{-2}\)m to 20 x 10\(^{-2}\)m.

The expression '' poisonous pleasure of wine'' Illustrates the use of

• A. metonymy
• B. synecdoche
• C. paradox
• D. oxymoron

Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. What percentage of the F generation will have black colour when two heterozygotes are crossed?

• A. 100%
• B. 75%
• C. 50%
• D. 25%