Exhaled air differs from inhaled air in that it

• A. less amount of carbon(IV) oxide
• B. is usually lower in temperature
• C. often has more oxygen
• D. usually has more water vapour

What effect will an increase in the supply of fish have on the meat market

• A. a fall in equilibrium price and quantity
• B. an increase in equilibrium price and quantity
• C. an increase in equilibrium price and a fall in quantity
• D. both equilibrium price and quantity will remain unchanged

A personnel who deals with the computer and its management is called?

• A. software
• B. liveware
• C. hardware
• D. firmware

At Ezekiel's call he beheld

• A. the love of God
• B. God's glory
• C. power of God
• D. God's mercy

Factorize the expression x(a - c) + y(c - a)

• A. (a - c)(y - x)
• B. (a - c)(x - y)
• C. (a + c)(x - y)
• D. (a + c)(x + y)

What is the least possible error in using a rule graduated in centimeters?

• A. 0.1cm
• B. 0.5cm
• C. 1.0cm
• D. 2.0cm

The length between two points on a topographical map is 5m. What is the actual distance between them if the scale of the map is 1:50000?

• A. 2.5 km
• B. 3.0 km
• C. 3.5 km
• D. 5.0 km

A character whose actions or qualities serve to heighten those of the hero through contrast is

• A. an adversary
• B. a protagonist
• C. an antagonist
• D. a foil

Alkanes are used mainly?

• A. in the textile industry
• B. in the hydrogenation of oils
• C. as domestic and industrial fuels
• D. as fine chemicals

An electron of mass 9.1 x 10\(^{-31}\) kg moves with a speed of 2.0 x 10\(^6\) ms\(^{-1}\) round the nucleus of an atom in a Circular path of radius 6.1 x 10\(^{11}\) m. Calculate the centripetal force acting on the electron.

• A. 7.7 x 10\(^{47}\) N
• B. 6.0 x 10\(^{-8}\)N
• C. 3.0 x 10\(^{-14}\)N
• D. 1.3 x 10\(^{-26}\)N