Correct Answer: C. supported

Correct Answer: C. unaltered

Correct Answer: A. East

Explanation

(a) (i) Conc HCL and MnO\(_2\) KMnO\(_2\) (II) Conc H\(_2\)SO\(_4\) (III) Downward delivery / upward displacement of air.

(ii) 16HCL + 2KMnO\(_4\) --> 2MnCl\(_2\) + 2KCl + 8H\(_2\)O5Cl\(_2\)

OR

MnO\(_2\) + 41HCI --> MnCl\(_2\) 2H2O\(_2\) + CI\(_2\) (III) 3Cl\(_2\) + 6NaOH --> 5NaCl + NaClO\(_3\) + 3HO\(_2\)

(b) (i) - Hematite: - Coke: - Limestone (ii) C + CO\(_2\) --> C + CO\(_2\) --> 2CO Fe\(_2\)O\(_3\) ⇒ Fe + 3CO\(_2\) . CaCO\(_3\) --> CaO + CO\(_2\)

CaO + SiO\(_2\) --> CaSiO\(_3\)

(iii) Pig Iron (iv) because it contains impurities not pure. (

c) (i) the dissolution of ŠO\(_3\) in water is highly exothermic, mist of acid droplets would be formed. (ii) it is produced on a large scale: - it is required by many industries as a raw material ; it is in high demand by other industries. (iii) I. Acting as a displacement/precipitating agents; ii. Acting as an Oxidizing agent

(d) 2CH\(_3\)CH\(_2\)CH\(_2\)OH + 2Na --> 2CH\(_3\)CH\(_2\)CH\(_2\)ONa + H\(_2\); OR 2CH\(_3\) H\(_7\)OH + 2Na --> 2CH\(_2\)H\(_7\)ONa + H\(_2\)

Correct Answer: B. Plasmodium

Correct Answer: B. Consumer price index

Correct Answer: B. increased prices of goods and services

Explanation

The following are the reasons for the spread Islam in West Africa. By the end of the fifteenth century, Islam had spread southwards to the fringes of the forest belt.

i. The Nature of Islam

The nature of Islam as a religion accepting polygamy to some extent, its tolerance of traditional African religions, its simplicity of doctrine and mode of worship helped propagators to make converts in Africa. These factors also made Islam easily adaptable to the African communities with which it came in contact. Again, the Islamisation of Africa was paralleled by the Africanisation of Islam. The making and sale of charms and amulets, which were believed to offer protection against evil forces and generally ensure success in life, were important in winning over converts.

ii. Trade

Another major reason that led to the rapid spread of Islam in West Africa was the trans-Saharan trade network. From the seventh century onwards, Muslim traders from the Maghreb and the Sahara started settling first in some of the market centres in the Sahel and then in the Savanna areas. Al-Bakri, a renowned Arabic Scholar and merchant wrote in 1067, that the capital of ancient Ghana was already divided into two parts; about six miles apart, the Muslim traders’ part which had as many as twelve mosques and the King’s part had one mosque for the use of the king’s Muslim visitors. It was these resident Muslim traders who converted the rulers and the principal local town’s people to Islam. Also, according to Kano Chronicles, during the reign of Yaji, the King of Kano from 1349 to 1385, the Wangarawa came from Melle bringing the Mohammedan religion. These examples grew the process of Islamisation or conversion to Islam, as it gathered momentum.

iii. Activities of Muslim Clerics

Islam also spread into West Africa through the activities of Muslim clerics, marabouts and scholars or mallams. These clerics or learned men founded their own religious centres which attracted students from all parts of the Western Sudan and who on the completion of their studies and training went back to their own homes to win converts. Many of them went on lecture or missionary tours to convert people, while others became advisers to Sudanese Kings on how to become effective rulers. Some clerics devoted a great deal of their time to writing books and instructions on all aspects of Islam for the education and conversion of people or the purification and strengthening of Islam. Some examples of clerics follow:

Ibu Khadija al-Kumi, a Muslim missionary and Abu Ishaq al-Sahili, a poet, scholar and architect from Granada were both invited by Mansa Musa to accompany him on his return from his celebrated pilgrimage in 1324/5. Both of them settled in Mali where they taught Islam. Al-Sahili also designed the great mosque of Timbuktu as well as a magnificent palace for Mansa Musa in the capital of Mali.

Again, the great Mande scholar, Abd Rahman Zaite (now identified as Abd al-Rahman Jakhite) settled in Kano on the invitation of Rumfa, the King of Kano. He built a mosque and introduced the practice of Koran recital and other devotional exercises.

Another brilliant Berber scholar called Abd al-Rahman al-Maghili (1477-78) established his Zawiyaie Islamic school in Tuat in the Sahara, and from there went on a missionary tour of the Western Sudan which lasted from 1492 to 1503. During this tour, he visited Air, Takedda, Kano, Katsina and Gao and preached to both rulers and commoners.

iv. Activities of Rulers

Islam gained ground in West Africa through the activities of the individual rulers. The rulers of the Western Sudan encouraged the trans-Saharan trade and extended hospitality to both traders and visiting clerics, but perhaps one of the most important ways in which they encouraged acceptance of Islam was through their own conversion. With a Muslim King or ruler it rapidly became a matter of prestige among the aristocracy also to convert to Islam in many kingdoms. Many rulers made considerable efforts to encourage Muslim institutions such as Islamic tax and legal systems or the provision of facilities such as mosques, through the appointment of Muslim officials such as judges and butchers who observe the Islamic code and to lead prayers, celebrating Muslim festival and ordering every town under their control to observe the ritual prayers. The pilgrimages that many of the rulers undertook – such as Mansa Musa and Askia Mohammed — had a considerable spiritual effect increasing their determination both to strengthen and purify Islam and to spread it even further.

v. &

Correct Answer: B. foster interstate economic and political co-operation

Correct Answer: D. N35,100

Explanation

sales volume of Q = 23,400

If sales volume of Q doubles that of p which is \(\frac{1}{3}\) of R we have;

for P = 23,400 ÷ 2p

p = \(\frac{23,400}{2}\) = 11,700

Since R is \(\frac{1}{3}\) of P, hence we have,

R= 1/3P

R = 3 x P

R = \(\frac{3}\times{11700}\) = 35,100