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.
The cleansing action of soap in hard water is not satisfactory because soap
forms insoluble calcium and magnesium salts
is made from fats and oils
has an organic component
alters the surface tension of water
is a sodium salt of higher carboxylic acids
Correct answer is A
No explanation has been provided for this answer.
During water treatment for town supply, water is passed through layers of send beds in order to
soften the water
filter the water
decolorize the water
destroy the germs in the water
coagulate colloidal particles in the water
Correct answer is B
No explanation has been provided for this answer.
The component of air that can be removed by alkaline pyrogallol solution is
oxygen
nitrogen
water vapour
carbon (IV) oxide
noble gases
Correct answer is A
No explanation has been provided for this answer.
Polymerization
Fermentation
Hydrolysis
Neutralization
Esterification
Correct answer is C
No explanation has been provided for this answer.
rubber
polyethene
nylon
cellulose
ethanol
Correct answer is D
No explanation has been provided for this answer.