Choose the option nearest in meaning to the underlined word(s). Lantanadwelt in a ruined cottage on the hillside?

• A. sat
• B. worked
• C. slept
• D. lived

(a) What term is used to describe each of the following processes?

(i) Alkaline hydrolysis of fats and oils;

(ii) The conversion of glucose into ethanol by enzymatic action;

(iii) Thermal decomposition of higher petroleum fractions into lower molecular mass hydrocarbons in the presence of catalyst.

(b)(i) Write the structure and IUPAC name for one alkanoic acid with the molecular formula C\(_4\)H\(_8\)0\(_2\).

(ii) Arrange the following compounds in order of increasing boiling point: Butane; Butanoic acid; Methylpropane.

(iii) Give an explanation for your answer in (b)(ii).

(c)(i) Ethanol was used for preparing a gas X which decolorized bromine water. Identify X and describe briefly its laboratory preparation.

(ii) Write an equation to show how ethanol reacts with sodium

(iii) Give the reagent and reaction conditions for the conversion of ethanol into C\(_2\)H\(_5\)COOC\(_2\)H\(_5\).

(d) State the type of recction involved in each of the conversions indicated below:

(i)C\(_6\)H\(_6\)C\(_6\)H\(_5\)CH\(_3\)

(ii) nC\(_2\)H\(_4\) \(\to\) (CH\(_2\) - CH\(_2\)),

(iii) CH\(_3\)CH\(_2\)CH(OH)CH\(_3\) -> CH\(_3\)CH\(_2\)CCH\(_3\)

(iv) (C\(_6\)H\(_{10}\)O\(_5\)) -> C\(_6\)H\(_{12}\)O\(_6\).

(iv)

During the Jihiliyya era, the Kaaba was the center of poetic contest at the annual festival called

• A. ijaz
• B. ukaz
• C. manat
• D. ushrah

The duty of an Alkali under the Hausa Fularti political system is to

• A. adjudicate under Islamic laws
• B. make Islamic laws
• C. execute Islamic laws
• D. make treaties under Islamic laws

Where was Indirect Rule successfully practised before it was introduced to Africa?

• A. Latin America
• B. India
• C. Britain
• D. Japan

Buying and selling of goods and services within a country is termed as

• A. international trade
• B. barter
• C. foreign trade
• D. internal trade

A particle dropped from a vertical height and falls freely for a time interval t. Sketch and explain a graph to show how h varies with (a) t (b) t\(^{2}\).

The reaction of an alkene with hydrogen in the presence of catalyst is

• A. a substitution reaction
• B. an oxidation reaction
• C. a nucleophilic reaction
• D. an addition reaction

How many mole of AgNO₃are there in 500cm³of 0.01MAgNO₃solution?

• A. 0.005 mole
• B. 0.05 mole
• C. 0.5 mole
• D. 5 moles

If 9x2 + 6xy + 4y2 is a factor of 27x3 - 8y3, find the other factor.

• A. 2y + 3x
• B. 2y - 3x
• C. 3x + 2y
• D. 3x - 2y