2001 - JAMB Chemistry Past Questions and Answers - page 4
31
The general formula for the alkanals is
A
ROH
B
R2CO
C
RCOOR1
D
RCHO
correct option: d
Users' Answers & Comments32
The main impurity in iron ore during the extraction of iron is
A
Silicon (IV) oxide
B
Carbon (IV) oxide
C
Calcium trioxosilicate
D
Sulphur (II) oxide
correct option: a
Users' Answers & Comments33
During the vulcanization of rubber, sulphur is added to
A
Break down rubber polymer
B
Lengthen the chain of rubber
C
Bind rubber molecules together
D
Act as a catalyst
correct option: c
Users' Answers & Comments34
Catalytic hydrogenation of benzene produces
A
Oil
B
Cyclohexene
C
Cyclohexane
D
Margarine
correct option: c
Users' Answers & Comments36
When chlorine Is passed into water and the resulting solution exposed to sunlight, the product formed are
A
Chlorine gas and hydrogen
B
Oxygen and oxochlorate (I) acid
C
Chlorine gas and oxochlorate (I) acid
D
Hydrochloric acid and oxygen
correct option: d
Users' Answers & Comments37
Proteins in acid solution undergo
A
Polymerization
B
Substitution
C
Fermentation
D
Hydrolysis
correct option: d
Users' Answers & Comments38
A characteristic reaction of the compounds with the general formula CnH2n is
A
Esterification
B
Polymerization
C
Decarboxylation
D
Substitution
correct option: b
Users' Answers & Comments39
The pair of organic compounds that are isomers is
A
Benzene and methylbenzene
B
Trichloromethane and tetrachloromethane
C
Ethanol and propane
D
But-1-ene and but-2-ene
correct option: d
Users' Answers & Comments40
A burning candle produces water and
A
Carbon (II) oxide
B
Carbon (IV) oxide
C
Oxygen
D
Hydrogen
correct option: b
Users' Answers & Comments