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.
Sulphur exists in six forms in the solid state. This property is known as?
isomerism
allotropy
isotopy
isomorphism
Correct answer is B
No explanation has been provided for this answer.
washing with water under pressure
passing the mixture into lime water
using ammoniacal copper (l) chloride
drying over phoshorus (V) oxide
Correct answer is A
The carbon (IV) oxide produced along with the hydrogen is removed by dissolving it in water under a pressure of 30atm or other solvents like caustic soda solution.
Which of the following equilibria is shifted to the right as a result of an increase in pressure?
H2(g) + I2(g) 2HI(g)
2NO2(g) N2O4(g)
PCl5(s) PCl3(s) + Cl2(g)
2O3(g) 3O2(g)
Correct answer is B
No explanation has been provided for this answer.
Which of the following processes leads to increase in entropy?
Mixing a sample of NaCl and sand
Condensation of water vapour
Boiling a sample of water
Cooling a saturated solution
Correct answer is C
No explanation has been provided for this answer.
low temperatures
high temperatures
all temperatures
all pressures
Correct answer is A
No explanation has been provided for this answer.