Which of the following is NOT true of metals?
They are good conductors of electricity
They ionize by electron loss
Their oxides are acidic
They have high melting points
Correct answer is C
No explanation has been provided for this answer.
In an electrolytic set-up to protect iron from corrosion, the iron is?
made cathode
made anode
used with a metal of lower electropositive potential
initially coated with tin
Correct answer is A
In cathodic protection,iron object is made cathode by connecting it with reactive elements like magnesium,zinc.
SO3 is NOT directly dissolved in water in the preparation of H2SO4 by the contact process because?
the reaction between SO3 and water is violently exothermic
acid is usually added to water and never water to acid
SO3 does not dissolve in water readily
SO3 is an acid gas
Correct answer is A
No explanation has been provided for this answer.
What was the political structure of the Nupe Kingdom during this period?
Feudal system
Absolute monarchy
Tribal confederation
Parliamentary democracy
Correct answer is B
The Nupe Kingdom was traditionally ruled by an Etsu, or king, making it an absolute monarchy. In this system, the king has complete power and authority over the state and its people.
The Mfecane was primarily driven by
Famine and drought
Intertribal conflicts and population movements
European colonial expansion
Arab slave trade
Correct answer is B
The Mfecane, which translates to 'The Crushing' in Zulu, was a period of widespread chaos and warfare among indigenous ethnic communities in southern Africa during the period between 1815 and about 1840. It was primarily driven by intertribal conflicts and population movements.