(a) Name one gaseous hydrocarbon which is

(i) used for welding.

(ii) a major raw material for the plastic industry.

(b) Write the structural formula of the hydrocarbon in (a)(i) above. Name the process by which it can be converted to neoprene rubber.

(c) Potatoes contain a high proportion of carbohydrate.

(i) Give the main product formed when potatoes are dehydrated completely

(ii) Describe how you would convert potatoes to ethanol. State the reactions involved the process and write equation for the final stage of the conversion.

(iii) Draw a labelled diagram of the apparatus you would use to obtain a sample of fairly pure ethanol from the product formed in (c)(ii) above. What is the name given to the technique?

This question is based on Mariama Ba's So Long a Letter

''A wife must understand once and for all, and must forgive; she must not worry herself about 'betrayals of the flesh. The important thing is what there is in the heart.''

These words are spoken by

• A. Tamsir in breaking the news of Modou's second marriage to Ramatoulaye
• B. Modou in support of his relationship with Binetou
• C. Aunty Nabou in trying to convince Mawdo to marry her niece
• D. Mawdo Ba to justify his marrying Nabou out of a sense of duty

The gathering of pilgrims on the 9th day of Dhul Hijjah is known as

• A. Wuquf bi Arefah
• B. Daal al Arefah
• C. Sajadah Arefah
• D. Jabal Arefah

What was the political structure of the Nupe Kingdom during this period?

• A. Feudal system
• B. Absolute monarchy
• C. Tribal confederation
• D. Parliamentary democracy

The account which refers to the tangible assets of a company that is of permanent nature is the?

• A. personal account
• B. real account
• C. nominal account
• D. cash account

The movement of part of a plant in response to external stimulus of no particular direction is?

• A. taxism
• B. tropism
• C. haptotropic movement
• D. nastic movement

The following accounting entries are made when bad debt is recovered

• A. debit bad debts accounts and credit bad debt recovered account
• B. debit debtors accounts and recovered account
• C. debit bad debts recovered account and credit bad debts account
• D. debit bad debts account and credit profit and loss account

The citizenship of a country can be acquired by an alien through

• A. habitation
• B. assimilation
• C. association
• D. naturalization

Consider the reaction: 2AI(s) + 6H⁺ (aq) → 2AI³⁺(aq) + 3H₂(g). What is the total number of moles of electrons transferred from the aluminium atoms to the hydrogen ions?

• A. 3
• B. 4
• C. 5
• D. 6

If in the English alphabet, A = 1, B = 2, C = 3…… and Z = 26, what will be product of the alphabets E and Y?

• A. 20
• B. 30
• C. 125
• D. 150