Which of the following does not replicate itself in an infected computer?

• A. spyware
• B. worm
• C. trojan horse
• D. virus

The document issued to a lender under a company's seal acknowledging a debt is called?

• A. stock
• B. share
• C. dividend warrant
• D. debenture

Which of the following political concepts promotes sharing and cooperation in a society?

• A. Aristocracy
• B. Capitalism
• C. Communalism
• D. Oligarchy

Which of the following crops can be referred to as Nigeria’s current export crops?

• A. Rubber, Groundnuts, Beniseed, cotton.
• B. Shear butter, Sorghum, Onions.
• C. Rubber, Cocoa, Coffee, Palm Kernel
• D. Palm Oil, Palm Kernel, Sugarcane

Increased output will cause farmers' revenue to decrease when market demand is?

• A. elastic
• B. inelastic
• C. unitary elastic
• D. perfectly elastic

At the collapse of a business enterprises, the person appointed to dispose off the assets is called ________?

• A. an auctioneer
• B. a broker
• C. a liquidator
• D. an auditor

(a) Sketch the form of the magnetic flux pattern due to a current flowing

(i) in a long solenoid

(ii) through two long straight parallel wires when the directions of the current are opposite. (Neglect the earth's magnetic field).

(b) Draw a labelled diagram of an electric bell and explain how it works

(c) An electric bell takes a current of 0.2A groin a battery of two dry cells connected in series. Each cell has an e.m.f. of 1.5V and an internal resistance of 1.0\(\Omega\).

(i) Calculate the effective resistance of the bell

(ii) What current would the bells take in the cells were arranged in parallel?

The table shows the frequency distribution of heights (in cm) of pupils in a certain school.

(a) (i) Construct a cumulative frequency table. (ii) Use the table to draw a cumulative frequency curve.

(b) Using the curve, estimate the: (i)median height; (ii) inter quartile range (iii) percentage of students whose heights are most 130cm.

Which of the following characteristics is not correct of pigs?

• A. prolific animals
• B. efficient feed converters
• C. source of meat
• D. source of skin

In a triangle XYZ,< YXZ = 44° and< XYZ = 112°. Calculate the acute angle between the internal bisectors of< XYZ and< XZY.

• A. 12°
• B. 56°
• C. 68°
• D. 78°