Support in young herbaceous plants is provided by

• A. translocation
• B. guttation
• C. turgidity
• D. osmosis

(a) Draw an energy profile diagram to illustrate a catalysed exothermic reaction and label parts of the curves representing the following:

(i) activated complex (without catalyst);

(ii) activated energy (with catalyst)

(iii) enthalpy change

(b) Give the reasons for the following observations:

(i) A balloon filled with liyilrogen becomes deflated faster than a balloon filled with air under the same conditions.

(ii) Hydrogen peroxide decomposes slowly at room temperature but when a pinch of MnO, is added, bubbles form rapidly.

(iii) A solution of hydrogen chloride as in methylbenzene has no effect on `litmus but a solution of the gas in water turns blue litmus paper red.

(c) Consider the reaction represented by the following equation: 2MnO\(^-_{4(aq)}\) + 5C\(_2\)O\(^{2-}_4\) + 16H\(^+\) \(\to\) 2Mn\(^{2+}_{(aq)}\) + 8H\(_2\)O\(_{(l)}\) + 10C\(_{2(g)}\) .

Write down: (i) the species undergoing reduction giving reasons;

(ii) the reducing agent giving reasons;

(iii) the reduction half equation;

(iv) one observation made during the reaction.

(d)(i) What is an electrochemical cell?

(ii) State three differences between an electrochemical cell and an electrolytic cell.

Select thewrongly spelt word from the options below:

• A. quiet
• B. beleive
• C. proceed
• D. precede

Which of the following is an item of government recurrent expenditure?

• A. Road construction
• B. Port facilities
• C. Wages and Salaries
• D. Telecommunication projects

This question is based on selection poems from Johnson, R. et al (eds.): New Poetry from Africa; Soyinka, W.. (ed.):Poems of Black African; Senanu, K.E. and Vincent, T. (eds.):A Selection of African Poetry; Maduka, C.T. et al: Exam Focus: Literature in English; Eruvbetine, A.E. et al (eds.): Longman Examination Guides and Nwoga, D. I. (ed.):West African Verse

The use of enjambment in Cheney-Coker's Myopia emphasizes the

• A. anger of the peasants
• B. beauty of the poem
• C. distressed mood of the persona
• D. arrangement of the stanzas

Paternity disputes could be resolved accurately through

• A. finger printing
• B. tongue rolling
• C. DNA test
• D. blood group

Select the word that has the same pattern of stress as given word.

ENORMOUS?

• A. interest
• B. solution
• C. stupidly
• D. character

Which of the following items are apportioned on the basis of purchases in preparing departmental accounts?

• A. Lighting and cooling expenses
• B. Carriage outwards
• C. Carriage inwards
• D. Selling and distribution expenses

Choose the word that is a necessary part of the underlined word. SCHOOL

• A. student
• B. report card
• C. test
• D. learning

A simple measuring device is used at points X and Y on the same horizontal level to measure the angles of elevation of the peak P of a certain mountain. If X is known to 5,200m above sea level, /XY/ = 4,000m and the measurements of the angles of elevation of P at X and Y are 15° and 35° respectively, find the height of the mountain. (Take \(\tan 15 = 0.3\) and \(\tan 35 = 0.7\))