A sample of orange juice is suspected to have been contaminated with a yellow dye. Which of the following methods can be used to detect the dye?

• A. Decantation
• B. Chromatography
• C. Distillation
• D. Filtration

Which of the following parts is common to both the disc and mouldboard plough?

• A. ploughshare
• B. landslide
• C. coulter
• D. beam

The following constitute the criteria for identifying an economic system except?

• A. ownership of resources
• B. scarcity of resources
• C. method of decision making
• D. motivation for production

A decrease in supply with demand remaining unchanged will cause the equilibrium price for a good to

• A. be unchanged
• B. remain elastic
• C. remain inelastic
• D. rise

Which of the following factors does not affect the electric resistance of wire?

• A. length
• B. mass
• C. temperature
• D. cross-sectional area

The cost of 2 biros and 3 pencils is N18, if a pencil cost N2.50k, how much is a biro?

• a) N4.25k
• b) N3.20k
• c) N4.00
• d) N5.25K

In the pre-colonial era, the breaking of an oath by a chief could _________

• A. lead to a war with his neighbours
• B. lead to ritual cleansing
• C. make his state come under a curse
• D. lead to his despoilment

A wall is usually constructed in piggeries to

• A. serve as points for providing drinking water
• B. make drainage of pens easier
• C. provide baths for pigs
• D. reduce piglet's mortality during birth

The area of a rectangular floor is 13.5m\(^{2}\). One side is 1.5m longer than the other.

(a) Calculate the dimensions of the floor ;

(b) If it costs N250.00 per square metre to carpet the floor and only N2,000.00 is available, what area of the floor can be covered with carpet?

The following insects undergo incomplete metamorphosis except

• A. termite
• B. cockroach
• C. butterfly
• D. locust