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 main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is
cineole
engenol
geraniol
limonene
Correct answer is A
No explanation has been provided for this answer.
Zone refining is used for the purification of
Au
Ge
Ag
Cu
Correct answer is B
No explanation has been provided for this answer.
The gas used for artificial ripening of green fruit is
ethylene
ethane
carbon dioxide
acetylene
Correct answer is A
No explanation has been provided for this answer.
3 billion years
100 years
0.01 minute
13 days
Correct answer is C
No explanation has been provided for this answer.
The method that cannot be used for removing permanent hardness of water is
adding sodium carbonate
distillation
adding caustic soda
boiling
Correct answer is D
No explanation has been provided for this answer.