The pathogen that cause smallpox is

• A. picornavirus
• B. peramyxovirus
• C. herpesvirus
• D. poxvirus

This question is based on Khadijat Abubakar Jalli's novel, The Life Changer

1. What did the author of the book study?

• A. B.Sc (Ed) Mathematics
• B. B.A English Language
• C. B.A Literary Studies
• D. BSc Political Science

The following are all leguminous forage crops except

• A. centrosema pubescens
• B. vigna sinensis
• C. stylodsnyhrd htsvilid
• D. panicum maximum

(a)(i) What is an echo? (ii) State two useful applications of echoes.

(iii) Why are the walls, floors and ceilings of a recording studio heavily padded?

(b)(i) Explain timbre and overtones.

(ii) What is resonance?

(c) As a ship approaches a cliff, its siren is sounded and the echo is heard in the ship after 12 seconds. 2.1 minutes later the siren was sounded again and the echo was heard 8 seconds later. If the speed of sound in air is 340 ms\(^{-1}\), calculate the velocity at which the ship was approaching the cliff.

If a fall in price of one commodity leads to an increase supply of another commodity, both commodities have

• A. composite supply
• B. joint supply
• C. competitive supply
• D. short run supply

Asa Company bought a vehicle worth N20,000 and the vehicle is to be depreciated at 5%. Using the reducing balance method of depreciation, what would be the value of the asset after 3 years?

• A. N19,000.00
• B. N18,050.50
• C. N17,147.50
• D. 16,290.13

One important characteristic of green plants is that they

• A. possess specialized sense organs
• B. are usually motile
• C. are autotrophic
• D. respond slowly to stimuli

Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood?

• A. Liver
• B. Kidney
• C. Bladder
• D. Colon

A regular polygon has 150º as the size of each interior angle. How many sides does it have?

• A. 12
• B. 10
• C. 9
• D. 8

Instruction: Choose the word opposite in meaning to the underlined words.Answer all the questions

The shopkeeper willreject your offer if you do not....his terms

• A. allow
• B. request
• C. accept
• D. condemn