The horizon of soil profile which encourages the greatest level of microbial activity is

• A. A-horizon
• B. B-horizon
• C. C-horizon
• D. D-horizon

The presence of gorges in the upper section of rivers is due to the fact that?

• A. the rocks in the upper course are less resistant
• B. the volume of the river is small
• C. hanging valleys join the main valley as waterfalls to cause the gorges
• D. the upper course has has a steep gradient

Industries contribute to national economic development because they?

• A. utilize local raw materials
• B. employ an increase number of labour
• C. provide recreational facilities
• D. use modern machines which replace human labour

A crop not requiring more than 750 mm annual rainfall is most suitable for cultivation in

• A. swampy forest
• B. sahel savanna
• C. rain forest
• D. sudan savanna

Which of the following is common to all forms of literature?

• A. language
• B. chorus
• C. action
• D. narrator

When CuSO₄ solution is treated with ammonia solution drop by drop till it is added in excess, a precipitate is first formed which then dissolves in excess to give a deep blue solution. The deep blue solution is

• A) Cu(OH)₂
• B) (Cu(NH₃)₄)(OH)₂
• C) CuSO₄
• D)(Cu(NH₃)₂)SO₄

Determine the coefficient of \(x^{2}\) in the expansion of \((a + 3x)^{6}\).

• A. \(18a^{2}\)
• B. \(45a^{4}\)
• C. \(135a^{4}\)
• D. \(1215a^{2}\)

The bicuspid valve is located between

• A. left auricle and left ventricle
• B. right auricle and right ventricle
• C. left and right ventricle
• D. left and right auricle

In a given regular polygon, the ratio of the exterior angle to the interior angles is 1:3. How many side has the polygon?

• A. 40
• B. 5
• C. 6
• D. 8

Given:

Capital ...........N1000

Liabilities........N500

Assets.............N1500

The accounting equation can be expressed as?

• A. N1000 + N500 + N1500 = N3000
• B. N1000 - N500 + N1500 = N2000
• C. N1000 + N500 = N1500
• D. N1500 + N500 = N2000