Chemistry Past Questions and Answers

An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77^oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore

A Methane
B Ethanoic acid
C Ethene
D Ethyl ethanoate
E Carbon tetrachloride

Question 2:

An organic compound X has the following properties: I. It is not miscible with water. ll. lt has boiling point of 77^oC lll. lt has a sweet odour lV. lt is insoluble in sodium hydrogen carbonate solution . V lt does not decolourize bromine water X is therefore

A Methane
B Ethanoic acid
C Ethene
D Ethyl ethanoate
E Carbon tetrachloride

Question 3:

Which are the correct IUPAC names for H-CO\(_2\)CH\(_3\) and CH \(\equiv\) CH

A Methyl methanoate and ethene
B Metanoic acid and ethyne
C Ethyl methanoate and ethyne
D Methyl methanoate and ethyne
E Ethanoic acid and ethene

Question 4:

Which of the following substances are all made by the process of polymerization?

A Nylon and soap
B Ethanoic acid margarine and ethanol
C Nylon and artificial rubber
D Soap and butane
E Margarine and nylon

Question 5:

The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu ²⁺(aq) +Zn (s) â†’ Cu(s) + Zn ²⁺(aq).Which of the following is the most complete description of this reaction?

A Cpper (ll) ions are being reduced
B Zinc is being oxidized.
C Copper (ll) ions and zinc are being reduced
D Copper (ll) ions and zinc are being oxidized
E Copper(ll) ions are being reduced and zinc oxidized