Some precious stones such as ruby and sapphire consist of aluminum oxide coloured by traces of the oxides of?
A. group lV elements B. group l metals C. transition metals D. alkaline earths E. the halogens Correct Answer: Option C – transition metals
Which of the following pieces of deposited if a current of 10A was passed through a solution of copper(ll) salt for 965 seconds? (1F = 96500 C)
A. 0.005 mole B. 0.025 mole C. 0.05 mole D. 1.00 mole E. 1.05 mole Correct Answer: Option C – 0.05 mole
Chlorine is is used in water treatment as?
A. a germicide B. a decolorizing agent C. an antioxidant D. a coagulating agent E. an aerating agent Correct Answer: Option A – a germicideSulphur burns in air to form?
A. an acidic oxide B. a basic oxide C. an amphoteric oxide D. a neutral oxide E. a mixed oxide Correct Answer: Option A – an acidic oxideProducts
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Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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Co-Ownership Structures and Land Acquisition Methods in Nigeria
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Rights in Community Land and Fundamental Land Concepts in Nigeria
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Customary Land Control and the Origins of Nigeria's Land Use Act
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Land Ownership Principles and Transaction Laws in Nigeria
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