Three ethnic groups of the Niger Delta region of Nigeria are

• A. Ibibio, Tiv and Ijo
• B. Igbo, Idoma and Ijo
• C. Ijo, Urhobo and Itshekiri
• D. Itshekiri, Igbo and Ibibio

From the list of words lettered A to D, choose the one that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentence.

Layi is quitereliable but his sister is_________

• A. unswerving
• B. untrustworthy
• C. deceptive
• D. pretentious

In recharging a lead-acid accumulator, the reaction at the cathode can be represented as

• A) Pb²⁺(aq) + SO^2-₄(aq) →PbSO₄(s)
• B) Pb²⁺+(aq) + 2e^- →Pb(s)
• C) Pb²⁺+(aq) + 2H₂O(l) → PbO₂(s) + 4H⁺(aq) + 4e^-
• D. Pb(s) → Pb²⁺(aq) + 2e^-

From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences:

Government officials have to swear to .......of secrecy

• A. an oath
• B. a vow
• C. a pledge
• D. an Act

The second term of a geometric progression is 3. If its sum to infinity is \(\frac{25}{2}\), find the value of its common ratio.

Which of the following values will likely, cause harm to the society?

• A. Fair play
• B. Indiscipline
• C. Tolerance
• D. Politeness

(a) State Hooke's law of elasticity

(b) A spiral spring, loaded with a piece of metal, extends by 10.5cm hair. When the metal is fully submerged in water, the spring extends by 6.8cm. Calculate the relative density of the metal. (Assume Hooke's law is obeyed).

What is the feature labelled K on the map is

• A. river sokoto
• B. lake chad
• C. lake kainji
• D. river zamfara

Throughout the long argument, the minister maintained his found over the claims. This means that the minister

• A. accepted his error
• B. refused to change his stand
• C. said different things
• D. did not consider every view

Which of the following gases will have the highest rate of diffusion under the same conditions? (H = 1, C =12, O = 16, S = 32, CI = 35.5)

• A. O₂
• B. CI₂
• C. HCI
• D. H₂S