A concave mirror can be used to produce a parallel beam of light if a lighted bulb is placed

• A. between its focus and the pole
• B. at its focus
• C. at its centre of curvature
• D. between its focus and centre of curvature

(a)(i) Give two uses of chlorine.

(ii) State the action of chlorine on moist blue litmus paper

(b) Draw a labelled diagram for the laboratory preparation of a dry sample of chlorine

(c) State the type of reaction involved between chlorine and (i) aqueous iron (II) chloride;

(ii) propane. Write an equation for each reaction and name the product formed in (c)(ii).

(d) Consider the reactions the following equations: Cl\(_{2(g)}\) + 2Br\(^-_{(aq)}\) \(\to\) 2Cl\(^-_{(aq)}\) + Br\(_{2(g)}\)

F\(_{2(g)}\) + 2Cl\(^-_{(aq)}\) ---> 2F\(^-_{(aq)}\) + Cl\(_{2(g)}\)

From the equations, arrange bromine, chlorine and fluorine in increasing order of oxidizing ability. Give the reason for your answer.

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

'You forget that I have a heart, a mind, that I am not an object to be passed from hand to hand.

You don't know what marriage means to me....'These words by Ramatoulaye are addressed to

• A. Mawdo
• B. her mother-in-law
• C. Daouda Dieng
• D. Tamsir

The type of Zakah due at the end of Ramadan fast is known as

• A. Zakah al mal
• A. Zakah al harth
• B. Zakah al fitr
• C. Zakah al anam

The Mfecane was primarily driven by

• A. Famine and drought
• B. Intertribal conflicts and population movements
• C. European colonial expansion
• D. Arab slave trade

If stationery bought for N200 has been entered as N2000. To correct this error?

• A. debit stationery with N2,200
• B. credit stationery with N1,800
• C. debit stationery with N1,800
• D. credit stationery with N2,200

The primary memory component of a computer is the

• A. console
• B. cache
• C. compliers
• D. assemblers

Derive the stock turnover period.(Average stock = 23,000. Cost of sales = 300,000 year = 365 days).

• A. 28 days
• B. 42 days
• C. 27 days
• D. 23 days

A major characteristic of a confederal state is that

• A. there is supremacy of the constitution
• B. the citizens often owe allegiance to the centre
• C. political stability is usually low
• D. the centre overides the regions

Choose the most appropriate optionopposite in meaning of the underlined word.

The video tape recorder was madeobsolete by the introduction of the satellite dish?

• A. antiquated
• B. useless
• C. fashionable
• D. functional