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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
Ethanoic acid
C
Potassium carbonate
D
Sodium hydroxide
2) Which is a weak base?
A
Sulfuric acid
B
Sodium hydroxide
C
Ethanoic acid
D
Potassium carbonate
3) What is the pH of a 1.0 x 10^-4 mol dm^-3 HCl solution?
A
-4
B
1.0
C
4.1
D
4.0
4) What is the colour of the solution when Universal indicator is added to pure water at 25 deg cel?
A
Red
B
Purple
C
Green
D
Orange
5) What is the colour of the solution when Universal indicator is added to a weak acid?
A
Blue
B
Yellow
C
Red
D
Purple
6) What is the pH of a 1.0 x 10^-4 mol dm^-3 NaOH solution?
A
4.1
B
10.1
C
10
D
4
7) Strength of acid affects __.
A
pH of the solution
B
proticity of the acid
C
concentration of the acid
D
amount of base required for complete neutralisation
8) Which method allows us to distinguish between a strong and weak acid?
A
Reaction with Mg strip
B
Use of blue litmus paper
C
Test for electrical conductivity using a light bulb
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
Use universal indicator
C
Reaction with ammonium carbonate, followed by gas tests
D
Test for electrical conductivity using a light bulb
10) What's the proticity of sulfuric acid?
A
2
B
1
C
3
D
4
*select an answer for all questions
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