(a) Draw a sketch map of Nigeria, and on it mark and name

(i) one area of high population density

(ii) one area c population density

(iii) one town in each area shown

(b) Give four reasons in each case for the type of population density shown on your map.

choose the word or group of words that is nearest in meaning to the underlined word as it is used in the sentence.

The boy came through the window asstealthily as he could.

• A. quietly
• B. carefully
• C. quickly
• D. slowly

How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)?

• A) 3
• B) 4
• C) 1
• D) 2

In Africa, the colonial authorities introduced modern means of transportation in order to

• A. develop the internal markets
• B. increase farmers
• C. encourage urban development
• D. promote import-export trade.

Find the next three terms of the sequence; 0, 1, 1, 2, 3, 5, 8...

• A. 13, 19, 23
• B. 9, 11, 13
• C. 11, 15, 19
• D. 13, 21, 34

(a)(i) List the quantum number that are assigned to an electron in an atom.

(ii) What is the maximum number of electrons that can occupy the 3d orbital?

(b) An element represented as P has the following electronic configuration: 1s\(^2\)2s\(^2\)2p\(^6\)2s\(^2\)

(i) Write the electronic configuration of the ion of P.

(ii) Without identifying P, write the likely formula of its chloride.

(iii) State with reason, whether P will be a good oxidizing or reducing agent.

(c)(i) What is electron affinity?

(ii) Explain briefly why ammonia can precipitate in dative bonding.

(d)(i) If an element in Group IV loses an alpha particle, to which group would the product belong?

(ii) Two equally toxic substances X and Y which decay to non-toxic products, were absorbed through the skin. If their half-lives are 8 minutes and 2 months respectively, which of them constitutes the greater health hazard? Explain your answer

'And they arrested them and put them in custody until the morrow, for it was already evening'. In the statement above, the imprisoned persons were

• A. Paul and John Mark
• B. Peter and Stephen
• C. Peter and John
• D. Paul and Barnabas

(a)Define the term solubility.

(b) The table below gives the solubility of salt Z at various mperatures

(i) Plot a graph of solubility against temperature.

(ii) From the graph determine the solubility of salt Z at 35°C.

(iii) If 100cm\(^{-3}\) of the saturated solution is cooled from 55°C to 35°C, calculate the mass of salt Z that would crystallize out. [Molar mass of salt Z = 100 g]

(c)(i) Write a balanced equation to illustrate the reaction of AI\(_2\)O\(_3\) with dilute I. HCI; II. NaOH.

(ii) What is the name given to an oxide that exhibits both acidic and basic properties?

(iii) Give one metallic oxide which exhibite these properties.

(d)(i) Determine the oxidation number of: I. Al in [Al (H\(_2\)O)\(_6\)]\(^{3+}\); II. H in NaH.

(ii) Give the IUPAC name of each of the following substances; I. CuSO\(_4\).5H\(_2\)O; II. CaCO\(_3\); Ill. KMnO\(_4\).

Chimamanda Ngozi Adichie’s 2013 novel Americanah chronicles the divergent experiences of Ifemelu and Obinze, a young Nigerian couple, after high school. Ifemelu moves to the United States to attend a prestigious university. ______ Obinze travels to London, hoping to start a career there. However, frustrated with the lack of opportunities, he soon returns to Nigeria. Which choice completes the text with the most logical transition?

• A) Meanwhile,
• B) Nevertheless,
• C) Secondly,
• D) In fact

The main objective of agriculture is

• A. income generation
• B. provision of employment
• C. food production
• D. provision of shelter