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Acids, Bases And Salts_Proticity, Strength, PH And Indicators
Test Description: Proticity, Strength, pH and indicators
Instructions: Answer all questions to get your test result.
1) Which is a strong acid?
A
Sulfuric acid
B
Sodium hydroxide
C
Potassium carbonate
D
Ethanoic acid
2) Which is a weak base?
A
Ethanoic acid
B
Sulfuric acid
C
Sodium hydroxide
D
Potassium carbonate
3) What is the pH of a 1.0 x 10^-4 mol dm^-3 HCl solution?
A
4.1
B
1.0
C
-4
D
4.0
4) What is the colour of the solution when Universal indicator is added to pure water at 25 deg cel?
A
Green
B
Red
C
Purple
D
Orange
5) What is the colour of the solution when Universal indicator is added to a weak acid?
A
Yellow
B
Purple
C
Blue
D
Red
6) What is the pH of a 1.0 x 10^-4 mol dm^-3 NaOH solution?
A
10.1
B
4.1
C
4
D
10
7) Strength of acid affects __.
A
amount of base required for complete neutralisation
B
proticity of the acid
C
concentration of the acid
D
pH of the solution
8) Which method allows us to distinguish between a strong and weak acid?
A
Reaction with Mg strip
B
Test for electrical conductivity using a light bulb
C
Use of blue litmus paper
D
Titration with a base
9) Which method does not allow us to distinguish between an acid and an alkali?
A
Use pH meter
B
Test for electrical conductivity using a light bulb
C
Reaction with ammonium carbonate, followed by gas tests
D
Use universal indicator
10) What's the proticity of sulfuric acid?
A
4
B
1
C
3
D
2
*select an answer for all questions
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