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.
The principal constituent of natural gas is
methane
ethane
propane
butane
Correct answer is A
No explanation has been provided for this answer.
Which of the following is found in cotton
Starch
Cellulose
Fat
Oil
Correct answer is B
No explanation has been provided for this answer.
catalytic cracking
hydrocracking
polymerization
reforming
Correct answer is D
No explanation has been provided for this answer.
CH2O
C3H6O3
C6H12O6
C6H12O3
Correct answer is C
C - 40% ; 40/12 = 3.33
H - 6.7% ; 6.7/1 = 6.7
O - 53.3% ; 53.3/16 = 3.33
C = 3.33/3.33 = 1
H = 6.7/3.33 = 2
O = 3.33/3.33 = 1
CH2O
(CH2O)n = 180
(12 + 2 + 16)~n = 180
30n = 180
n = 6
= C6H12O6
Ethanol reacts with excess acidified K2Cr2O to produce
ethanedioic acid
ethanal
ethylethanoate
ethanoic acid
Correct answer is D
No explanation has been provided for this answer.