(a) Give two reasons why carbon(IV) oxide is used for extinguishing fire

(b) Explain briefly the water softening action of cation exchange resins.

Fill each gap with the most appropriate option from the list provided.

The doctor asked the patient what .......?

• A. the problem is
• B. is your problem
• C. the problem was
• D. is the problem

'To see a world in a grain of sand

And a heaven in a wild flower

Hold infinity in the palm of your hand

And eternity in an hour'

- William Blake

To see a World In a Grain of Sand.

The predominant figure of speech used in the lines above is

• A. metaphor
• B. simile
• C. paradox
• D. hyperbole

Which of the following phenomena is not a direct consequence of rectilinear propagation of light?

• A. lunar and solar eclipses
• B. images of objects in a pin hole camera
• C. diffraction of light
• D. shadows of opaque object

A man was travelling from Lagos to Ibadan in a bus and on the opposite side of the road a woman was travelling to Lagos from Ibadan in another bus. Suddenly a car passed the bus the man was travelling in. The car overtaking them appears slow even though it is overtaking them because

• (a) the car is not really fast
• (b) the difference between the speed of the car and that of the bus is small
• (c) the car slowed down when he got to the bus
• (d) the driver of the car was no longer paying attention to his driving

A plane is inclined at an angle \(\theta\) to the horizontal. Its velocity ratio is

• A. \(sin\theta\)
• B. \(tan\theta\)
• C. \(\frac{1}{sin\theta}\)
• D. \(\frac{1}{tan\theta}\)

(a) Define public opinion.

(b) What are its characteristics?

Instruction: Choose the word opposite in meaning to the underlined word.

The young engineer is good atterminating other people's project but has not been capable of ... any of his own

• A. integrating
• B. finishing
• C. complating
• D. initiating

The population of Oh-aha L.G.A. WAS 480 000 in December 1980, out of which 60% were females . If within one year no birth were recorded, but 5% of the L.G.A. in December 1981?

• A. 96 000
• B. 192 000
• C. 288 000
• D. 470 400

Public Complaints Commission in West African countries can be called

• A. Civil Service Commission
• B. Ombudsman
• C. Local Authority Commission
• D. Ministry of Establishment