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 active constituent of tea and coffee is
nicotine
chlorophyll
caffeine
aspirin
Correct answer is C
No explanation has been provided for this answer.
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
1 gram of molecule
0.5 gram of molecule
5 gram of molecule
10 gram of molecule
Correct answer is C
No explanation has been provided for this answer.
The metal that does not give H2 on treatment with dilute HCL is
Zn
Fe
Ag
Ca
Correct answer is C
No explanation has been provided for this answer.
The mineral containing both magnesium and calcium is
magnesite
calcite
carnallite
dolomite
Correct answer is D
No explanation has been provided for this answer.
The main chemical constituent of clay is
silicon oxide
aluminium borosilicate
zeolites
aluminium silicate
Correct answer is D
No explanation has been provided for this answer.