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.
What is the IUPAC name for the compound
1-chloro-2-methylprop-2,3-ene
1-chloro-2-methylprop-2-ene
3-chloro-2-methylprop-1-ene
3-chloro-2methylprop-1,2-ene
Correct answer is C
It is vital you rearrange/redraw the structure if confusing this will make naming the compound easier. the name of the compound above is 3 - chloro-2- methyl prop - 1 - ene.
Use the figure above to answer this question. Which of the following is NOT a monomer?
A
B
C
D
Correct answer is A
No explanation has been provided for this answer.
A
B
C
D
Correct answer is D
No explanation has been provided for this answer.
T
U
X
Y
Correct answer is A
point T shows solid-liquid equilibrium. At this point, the substance been heated has begun to melt but has not completely melted forming a solid liquid mixture.
7.45 g
14.90 g
74.50 g
149.00 g
Correct answer is D
Trace the graph to the y-axis to obtain the solubility of the salt at 80°C and at the point where the straight line touches the y-axis, the solubility of the salt at these respective temperatures is 4mol\dm3 and 6mol\dm3 solubility of salt that will crystallize out = 6- 4 = 2mol\dm3 therefore mass of salt deposited = solubility x molar mass of salt 2 x 74.5 = 149.00g