MC Flashcards
1
Q
The following cell has an EMF of +0.46 V.
Cu | Cu2+ || Ag+ | Ag
Which statement is correct about the operation of the cell?
A Metallic copper is oxidised by Ag+ ions.
B The silver electrode has a negative polarity.
C The silver electrode gradually dissolves to form Ag+ ions.
D Electrons flow from the silver electrode to the copper electrode
via an external circuit.
A
A
2
Q
What forms when a solution of sodium carbonate is added to a solution of
gallium(III) nitrate?
A A white precipitate of gallium(III) carbonate.
B A white precipitate of gallium(III) hydroxide.
C A white precipitate of gallium(III) carbonate and
bubbles of carbon dioxide.
D A white precipitate of gallium(III) hydroxide and
bubbles of carbon dioxide.
A
D
3
Q
How many isomers have the molecular formula C5H12? A 2 B 3 C 4 D 5
A
B
4
Q
Which molecule is not produced when ethane reacts with bromine in the presence of ultraviolet light? A C2H4Br2 B HBr C H2 D C4H10
A
C
5
Q
How many structural isomers have the molecular formula C4H9Br? A 2 B 3 C 4 D 5
A
C
6
Q
Why are fluoroalkanes unreactive? A Fluorine is highly electronegative. B The F– ion is very stable. C They are polar molecules. D The C–F bond is very strong.
A
D
7
Q
Which compound has the highest boiling point? A C2H4 B C2H6 C CH3NH2 D CH3F
A
C
8
Q
Which compound can polymerise by reaction with itself? A NH2CH2CH2NH2 B CH3CH2CONH2 C HOOCCH2COOH D NH2CH2COCl
A
D
9
Q
Which amine has only three peaks in its proton NMR spectrum? A Methylamine B Trimethylamine C Diethylamine D Propylamine
A
C
