#1
Which substance turns red litmus paper blue?
Base
ExplanationBases turn red litmus paper blue.
#2
What is the pH value of a neutral substance?
7
ExplanationNeutral substances have a pH of 7.
#3
Which acid is found in citrus fruits like lemons and oranges?
Citric acid
ExplanationCitric acid is found in citrus fruits like lemons and oranges.
#4
What happens to the pH of a solution when a base is added to it?
It increases
ExplanationAdding a base to a solution increases its pH.
#5
What is the name of the process by which acids react with bases to form salt and water?
Neutralization
ExplanationThe process by which acids react with bases to form salt and water is neutralization.
#6
Which of the following is not a property of acids?
Feel slippery
ExplanationFeeling slippery is not a property of acids.
#7
What is the chemical formula of hydrochloric acid?
HCl
ExplanationThe chemical formula of hydrochloric acid is HCl.
#8
Which of the following is a weak acid?
Acetic acid
ExplanationAcetic acid is a weak acid.
#9
What is the name given to a solution with a pH greater than 7?
Alkaline
ExplanationA solution with a pH greater than 7 is alkaline.
#10
What is the chemical formula of sulfuric acid?
H2SO4
ExplanationThe chemical formula of sulfuric acid is H2SO4.
#11
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-3 M?
3
ExplanationA solution with a hydrogen ion concentration of 1 x 10^-3 M has a pH of 3.
#12
Which of the following is a characteristic property of bases?
Feel slippery
ExplanationFeeling slippery is a characteristic property of bases.
#13
What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-10 M?
14
ExplanationA solution with a hydrogen ion concentration of 1 x 10^-10 M has a pH of 14.