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.
NaHCO3(s) can be distinguished from Na2CO3(s) by the action of
dilute hydrochloric acid
carbon (IV) oxide
aqueous ammonia
heat
Correct answer is D
No explanation has been provided for this answer.
Which of the following is not an acid anhydride?
P 2O 5
NO 2
SO 2
CO
Correct answer is D
No explanation has been provided for this answer.
HNO3 does not usually react with metals to liberate hydrogen because HNO3 is
a strong acid
a corrosive acid
an oxidizing agent
a nitrating agent
Correct answer is C
This is because nitric acid is a strong oxidizing agent. When it reacts with metals it tends to oxidize the metal but the hydrogen in it does not get reduced to hydrogen gas.
Which of the following statements is not a postulate of the kinetic theory of gases?
Molecules move with the same speed
intermolecular forces are negligible
Molecules are in a state of constant random motion
collision between molecules is elastic
Correct answer is A
No explanation has been provided for this answer.
When X is heated with manganese (IV) oxide, oxygen is produced X is
KCI
KCIO3
CaCO3
ZnCO3
Correct answer is B
No explanation has been provided for this answer.