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Chemistry Past Questions and Answers

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Chemistry Questions

Question 86:

Which of the following is not a member of the homologous series of the paraffins (alkanes)?

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A C<sub style='font-size: smaller;'>3</sub>H<sub style='font-size: smaller;'>8</sub>
B C<sub style='font-size: smaller;'>5</sub>H<sub style='font-size: smaller;'>12</sub>
C C<sub style='font-size: smaller;'>7</sub>H<sub style='font-size: smaller;'>16</sub>
D C<sub style='font-size: smaller;'>15</sub>H<sub style='font-size: smaller;'>32</sub>
E C<sub style='font-size: smaller;'>24</sub>H<sub style='font-size: smaller;'>48</sub>

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Question 87:

When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called

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A Ionic bond
B Electrovalent bond
C Covalent bond
D Co-ordinate bond
E Hydrogen bond

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Question 88:

An example of an alcohol is

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A CCl<sub style='font-size: smaller;'>4</sub>
B CH<sub style='font-size: smaller;'>3</sub>COOH
C CHCl<sub style='font-size: smaller;'>3</sub>
D C<sub style='font-size: smaller;'>2</sub>H<sub style='font-size: smaller;'>6</sub>
E CH<sub style='font-size: smaller;'>3</sub>OH

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Question 89:

The nucleus of an atom contains

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A Protons only
B Neurons only
C Protons and electrons
D Neutrons and electrons
E Protons and neutrons

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Question 90:

Hypochlorous acid is used as a bleach because

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A It is a strong acid
B It yields chlorine readily in pure water
C It is an oxidising agent
D It is a weak acid
E It is a reducing agent

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