Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
A mixture of sand, ammonium chloride and sodium chloride is best separated by?
sublimation followed by addition of water and filteration
sublimation followed by addition of water and evaporation
addition of water followed by filtration and sublimation
addition of water followed by crystallization and sublimation
Correct answer is A
No explanation has been provided for this answer.
The confirmatory test for alkanoic acids in organic qualitative analysis is the?
turning of wet blue litmus paper red
reaction with alkanols to form esters
reaction with sodium hydroxide to form salt and water
reaction with aqueous Na2COsp3 to liberate a gas which turns lime water milky
Correct answer is B
No explanation has been provided for this answer.
Which of the following represents saponification?
Reaction of carboxylic acids with sodium hydroxide
Reaction of alkanoates with acid
Reaction of alkanoates with alcohols
Reaction of alkanoates with sodium hydroxide
Correct answer is D
No explanation has been provided for this answer.
Catalytic hydrogenation of benzene produces?
an aromatic hydrocarbon
margarine
cyclohexane
D.D.T
Correct answer is C
No explanation has been provided for this answer.
Palm wine turns sour with time because?
the sugar content is converted into alcohol
the carbon (IV) oxide formed during the fermentation process has a sour taste
it is commonly adulterated by the tappers and sellers
microbial activity results in the production of orgain acids within it
Correct answer is D
No explanation has been provided for this answer.