The botanical name of giant star grass is

• A. andropogon tectorus
• B. pennisetum purpureum
• C. panicum maximum
• D. cynodon plectostachyum

Find the sum to infinity of the series 1/2 , 1/6, 1/18, .....

• A. 2/3
• B. 1/3
• C. 3/4
• D. 1

Nigeria was a federal state under the constitution of 1954 because the constitution provided for

• A. equal representation between the North and South
• B. a division of functions between the centre and the component states
• C. direct election of mebers of parliament
• D. the post of a prime minister

In West Africa, a greater part of the land is used for

• A. livestock farming
• B. arable cropping
• C. building houses
• D. game reserves

(a) Explain what is meant by the statement: The capacitance of a parallel-plate capacitor is 2\(\mu\)F

(b) State: (i) three factors on which its capacitance depends

(ii) three uses of capacitors.

(c) Derive a formula for the energy W stored in a charged capacitor of capacitance C carrying a charge Q on either plate.,

(d) Two parallel-plate capacitors of capacitances 2\(\mu\)F and 3\(\mu\)F are connected in parallel and the combination is connected to a 50V d.c. source. Draw the circuit diagram of the arrangement and determine the:

(i) charge on either plate of each capacitor

(ii) potential difference across each capacitor

(iii) energy of the combinad capacitors.

What is the acceleration due to gravity 'g' on the moon, if g is 10^-2 on the earth?

• A. 0. 10 ms^-2
• B. 0.74ms^-2
• C. 1.6ms^-2
• D. 10.00ms^-2

Which of the following is not a role of government in agricultural production?

• A. provision of labour
• B. provision of subsidies
• C. building of storage facilities
• D. provision of loans and credits

The results of the 1973 census in Nigeria were rejected because

• A. the figures were unacceptable to the U.N.B
• B. the figures were controversial
• C. Nigerians were contented with the existing population figures
• D. there were preparations for a fresh census

A polynomial is defined by \(f(x + 1) = x^{3} + px^{2} - 4x + 2\), find f(2).

• A. -8
• B. -2
• C. 2
• D. 8

One consequence of Nigeria's over dependence on petroleum is

• A. competition from other OPEC members
• B. increased local use of petroleun products
• C. increased importation of food items
• D. increase in world oil prices