#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 a strong base?
Sodium hydroxide (NaOH)
ExplanationSodium hydroxide (NaOH) is a strong base.
#7
Which acid is commonly found in vinegar?
Acetic acid
ExplanationAcetic acid is commonly found in vinegar.
#8
What is the name of the compound that forms when an acid reacts with a base?
Salt
ExplanationThe compound that forms when an acid reacts with a base is salt.
#9
Which of the following is a strong acid?
Sulfuric acid
ExplanationSulfuric acid is a strong acid.
#10
What is the name of the scale used to measure acidity and basicity?
pH scale
ExplanationThe scale used to measure acidity and basicity is the pH scale.
#11
Which of the following is not a property of acids?
Feel slippery
ExplanationFeeling slippery is not a property of acids.
#12
What is the chemical formula of hydrochloric acid?
HCl
ExplanationThe chemical formula of hydrochloric acid is HCl.
#13
Which of the following is a weak acid?
Acetic acid
ExplanationAcetic acid is a weak acid.
#14
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.
#15
What is the chemical formula of sulfuric acid?
H2SO4
ExplanationThe chemical formula of sulfuric acid is H2SO4.
#16
Which of the following is a characteristic property of acids?
Turns blue litmus paper red
ExplanationTurning blue litmus paper red is a characteristic property of acids.
#17
Which acid is present in our stomach to aid digestion?
Hydrochloric acid
ExplanationHydrochloric acid is present in our stomach to aid digestion.
#18
What is the name given to a solution with a pH less than 7?
Acidic
ExplanationA solution with a pH less than 7 is acidic.
#19
Which of the following is a weak base?
Ammonia
ExplanationAmmonia is a weak base.
#20
What is the chemical formula of nitric acid?
HNO3
ExplanationThe chemical formula of nitric acid is HNO3.
#21
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.
#22
Which of the following is a characteristic property of bases?
Feel slippery
ExplanationFeeling slippery is a characteristic property of bases.
#23
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.