Which of the following correctly describes the energy changes in the generation of light by a hydroelectric power station?

• A. Electrical ? mechanical ? potential
• B. potential ?mechanical ?electrical ? light
• C. mechanical ? sound ? electrical ? light
• D. kinetic ? mechanical ? electrical ?light

In the electrolysis of CuSO₄(aq) using copper electrodes, the reaction at the anode is

• A. discharge of SO₄^2-
• B. discharge of OH^-
• C. dissolution of copper electrode
• D. evolution of oxygen

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

Since the army was no longer needed, it was ...............

• A. demolished
• B. dismantled
• C. disbanded
• D. fired

In the year 1911, who argued most representative system deteriorates towards an Oligarchy or Patriarchy?

• A. Robert Michels
• B. Adolf Gasser
• C. Adolf Hitler
• D. Edmunde Burke

All the following are fertile plains except

• A. loess plains
• B. alluvial plains
• C. erosional plains
• D. flood plain

Evaluate: \(\int(2x + 1)^3 dx\)

• A. \(8(2x + 1)^2 + k\)
• B. \(6(2x + 1)^2 + k\)
• C. \(\frac{1}{8} (2x + 1)^4 + k\)
• D. \(\frac{1}{6} (2x + 1)^4 + k\)

Which of the following yields more revenue to Nigeria?

• A. Value added tax
• B. Royalties
• C. indirect tax
• D. Direct tax

The feature commonly found along the lower course of a river are

• A. windgaps
• B. rapids
• C. waterfalls
• D. meanders

From the words lettered A to D below each of the following sentences, choose the word that is nearest in meaning to the underlined word.

The Principal warned the final-year students about the consequences ofprocrastination

• A. haste
• B. delay
• C. protesting
• D. rioting

The mode of transporting crude oil to the ports for export purposes is by

• A. tanker
• B. rail
• C. road
• D. pipeline