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.
blue precipitate is formed which is soluble in excess ammonia
brick red precipitate is produced which is insoluble in excess ammonia
which precipitate is formed which is excess in ammonia
green precipitate is formed which is insoluble in excess ammonia
Correct answer is A
No explanation has been provided for this answer.
The basic property of salts used as drying agents is by?
efforescence
high melting point
hygroscopy
low solubility
Correct answer is C
Hygroscopic substances are used to keep products dry or to remove water from an area. They are commonly used in desiccators
Some common examples of hygroscopic substances include: Sodium chloride. Zinc chloride. Calcium chloride
0.32
1.56
3.13
31.25
Correct answer is C
No explanation has been provided for this answer.
The most common method of preparing insoluble salts is by
filtration
decomposition
neutralization
double decomposition
Correct answer is D
No explanation has been provided for this answer.
diatomic
triatomic
tetraatomic
monoatomic
Correct answer is C
No explanation has been provided for this answer.