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.
One of the major uses of alkane is?
as domestic and industrial fuel
in the hydrogenation of oils
in the textile industries
in the production of plastics
Correct answer is A
- Alkanes will react with Oxygen if they are given sufficient Activation Energy. This will result in a highly Exothermic reaction, producing Carbon Dioxide and Water, which makes Alkanes very useful as fuels.
C3H7OH → C4H10 → C7H10
C4H10 → C7H16 → C3H7OH
C7H16 → C3H7OH → C4H10
C4H10 → C3H7OH → C7H16
Correct answer is D
C3H7OH ( PROPANOL) ⇒ 97ºC
C7H16 ( HEPTANE ) ⇒ 98.42ºC ;and
C4H10 ( BUTANE ) ⇒ -1ºC
tricloromethane
dichloromethane
tetrachloromethane
chloromethane
Correct answer is C
Carbon tetrachloride ( IUPAC: Tetrachloromethane) CCl\(_4\), is the final product obtained in this substitution reaction.
Which of the following is used to hasten the ripening of fruit?
Ethene
Ethanol
Ethyne
Ethane
Correct answer is A
No explanation has been provided for this answer.
Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give?
xylene
toluene
cyclopentane
cyclohexane
Correct answer is D
Cyclohexane is formed when Benzene (vapor) undergoes addition reaction with hydrogen in the presence of nickel catalyst at 180°C