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.
28
32
44
71
Correct answer is D
500cm3 = 1.58g
=22400cm = (1.58g)/(500cm3) χ 22400cm3) = 70.78 g
= 71g
If a gas occupies a container of volume 146 cm3 at 18°C and 0.97`atm, its volume 146cm3 at s.t.p is?
133
146
266
292
Correct answer is A
V1 = 146cm3 T1 = 273 + 118 = 291 k
P1 = 0.971 atmosphere
V2 = ? T2 = 273K P2 = 1 atom
V2 = (0.971 atom χ 146cm3 χ 273k)/(1atm χ 291k) = 132997 0r = 133cm3
Which of the following is formed when maltose reacts with concentrated tetraoxosulphate (VI) acid ?
Carbon (IV) oxide
Coal tar
Charcoal
Toxic fumes
Correct answer is C
No explanation has been provided for this answer.
45
55
80
100
Correct answer is B
No explanation has been provided for this answer.
Alkaonic acids have low volatility compared with alkanols because they?
are more polar than alkaonls
have two oxygen atoms while alkanols have one
form hydrogen bonds while alkanols do not
form two hydrogen bonds while alkanols form one
Correct answer is D
No explanation has been provided for this answer.