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.
Which of the following statements about volatile liquids is correct? They have
high vapour pressure and low boiling point
high vapour pressure and high boling point
low vapour pressure and low boining point
low vapour pressure and high boiling point
Correct answer is A
No explanation has been provided for this answer.
The vapour pressure of a given volume of liquid increase when the
liquid becomes saturated with a salt
Volume of the liquid increases
temperature of the liquid falls
temperature of the Liquid rises
Correct answer is D
No explanation has been provided for this answer.
Which of the following relationships correctly expresses the Boyle's law?
P \(\alpha\) V at constant T
V \(\alpha\) T at constant P
P \(\alpha\) \(\frac{1}{V}\) at constant T
V \(\alpha\) \(\frac{1}{T}\) at constant P
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements about a chemical system in equilibrium is correct/ The
reaction is irreversible
reaction goes to completion
equilibrium is re-established when a stress is applied
equilibrium position is affected by catalyst
Correct answer is C
No explanation has been provided for this answer.
18.0 gmol-1
22,4gmol-1
28.0gmol-1
36.0 gmol-1
Correct answer is C
Imole Q occupies 22400 cm3
x mole occupies 800 cm3
x = \(\frac{800 x 1}{22400}\)
= 0.036mol
Molar mass = Mass ÷ Mole
= 1 ÷ 0.036
Molar mass ≈ 28 g/mol