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.
solid particles dispersed in liquid
solid or liquid particles dispersed in gas
gas or liquid particles dispersed inliquid
liquid particles dispersed inliquid
Correct answer is B
No explanation has been provided for this answer.
0.13
0.25
1.25
2.00
Correct answer is C
Solubility in moles per dm3
No of moles = (20)/(159.5) χ 0.125 moles
in 100 g of moles = (0.125)/(100) χ 1000 = 1.25 moles
is deliquescent
is hydroscopic
has some molecules of water of crystallization
is efflorescent
Correct answer is A
No explanation has been provided for this answer.
50.2
47.0
4.70
0.47
Correct answer is C
Pb(NO3)2 + H2S → PbS + 2HNO3
34 g H2S → 239 g pbs
5.02g pbs → (34)/(237g) χ 5.02 g = 0.714 g
34g → 22.4 dm3
=0.714 → (22.4)/34g) χ 100 = 4.70
20
25
50
75
Correct answer is B
No explanation has been provided for this answer.