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Acids, Bases And Salt
Test Description: To test students understanding of this topic
Instructions: Answer all questions to get your test result.
1) Which oxide reacts with an alkali to form a salt, but does not react with acid to form a salt?
A
zinc oxide
B
copper (II) oxide
C
sulfur dioxide
D
aluminium oxide
2) Which compound can be prepared by reacting a metal with a dilute acid?
A
calcium hydroxide
B
copper (II) chloride
C
iron (II) sulfate
D
zinc carbonate
3) Which substance when added in excess, would neutralise the nitric acid without leaving an alkaline solution?
A
aqueous ammonia
B
water
C
aqueous sodium hydroxide
D
calcium carbonate
4) Which of the following compound dissolves in water to give an alkaline solution?
A
hydrochloric acid
B
calcium carbonate
C
sodium hydroxide
D
copper (II) hydroxide
5) Which one of the following salts can be prepared by reacting an acid with an alkali using titration?
A
zinc nitrate
B
magnesium sulfate
C
sodium sulfate
D
aluminium chloride
6) Copper (II) chloride crystals can be prepared by reacting dilute hydrochloric acid with several substances. Which of the following substances cannot be used?
A
copper (II) hydroxide
B
copper
C
copper (II) oxide
D
copper (II) carbonate
7) Which of the following describes a step in the preparation of insoluble barium sulfate from aqueous barium chloride and dilute sulfuric acid?
A
collect the precipitate by filtration
B
evaporate the filtrate until it crystallises
C
add dilute sulfuric acid until no more gas is produced
D
add the indicator methyl orange
8) What is the best method of making copper (II) sulfate?
A
adding copper to aqueous zinc sulfate
B
adding aqueous sodium sulfate to copper (II) carbonate
C
adding dilute sulfuric acid to copper (II) oxide
D
adding dilute sulfuric acid to copper
9) A man suffering from an excess if acid in his stomach has no indigestion tablets. Which substance could he take to lower this acidity?
A
bicarbonate of soda (pH 8)
B
water (pH 7)
C
kemon juice (pH 5)
D
aspirin (pH 6)
10) Which element forms an oxide that reacts with water to give an acidic solution?
A
sulfur
B
alumimium
C
sodium
D
zinc
*select an answer for all questions
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