Welcome to the Acids, Bases, and pH MCQs with Answers. In this post, we are sharing Acids, Bases, and pH Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Acids, Bases, and pH online MCQs Test.
What is the pH range of a neutral solution?
a) 0 to 3
b) 4 to 7
c) 7
d) 8 to 14
Which of the following substances is considered a strong acid?
a) Acetic acid
b) Hydrochloric acid
c) Citric acid
d) Carbonic acid
What does a pH value below 7 indicate about a solution?
a) The solution is basic
b) The solution is neutral
c) The solution is acidic
d) The solution is non-reactive
Which of the following is a characteristic of a base?
a) Sour taste
b) Slippery feel
c) Turns blue litmus red
d) Reacts with metals to produce hydrogen gas
What is the pH of a solution with a concentration of 0.001 M HCl?
a) 1
b) 3
c) 5
d) 7
Which indicator changes color in response to a pH change and is commonly used in titrations?
a) Litmus
b) Bromothymol blue
c) Phenolphthalein
d) Methyl orange
What is the pH range of weak acids?
a) 0 to 3
b) 4 to 6
c) 7
d) 8 to 10
Which of the following is a property of acids?
a) Bitter taste
b) Slippery feel
c) Turns blue litmus paper red
d) Feels smooth on the skin
What is the term for a solution with a pH above 7?
a) Acidic
b) Neutral
c) Basic
d) Amphoteric
Which of the following substances is a common example of a weak base?
a) Sodium hydroxide
b) Ammonia
c) Potassium hydroxide
d) Calcium hydroxide
What happens to the pH of a solution when an acid is added to it?
a) The pH increases
b) The pH remains unchanged
c) The pH decreases
d) The pH becomes neutral
Which pH value represents a strong base?
a) 2
b) 4
c) 9
d) 13
What is the result of mixing an acid with a base in a neutralization reaction?
a) Formation of a salt and water
b) Formation of an acid and base
c) Release of gas
d) No reaction occurs
Which of the following acids is commonly used in the production of fertilizers?
a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
d) Phosphoric acid
What is the pH of a solution with a concentration of 1 × 10^-9 M H+ ions?
a) 5
b) 7
c) 9
d) 11
Which of the following is an example of a strong base?
a) Sodium bicarbonate
b) Ammonium hydroxide
c) Calcium hydroxide
d) Magnesium hydroxide
What is the general formula for calculating pH?
a) pH = -log10[H+]
b) pH = log10[H+]
c) pH = [H+] / 10
d) pH = -log10[OH-]
Which substance is used as a pH indicator in swimming pools?
a) Universal indicator
b) Bromothymol blue
c) Methyl red
d) Litmus paper
What is the effect of adding a base to an acidic solution?
a) It increases the acidity
b) It decreases the acidity
c) It makes the solution more acidic
d) It does not change the pH
Which of the following is a property of bases?
a) They turn red litmus paper blue
b) They taste sour
c) They react with metals to form hydrogen gas
d) They are often found in fruits
Which acid is found in vinegar?
a) Hydrochloric acid
b) Acetic acid
c) Lactic acid
d) Citric acid
What is the pH of a solution that is ten times more acidic than a pH 3 solution?
a) 2
b) 4
c) 5
d) 6
Which of the following indicators turns yellow in acidic solutions and pink in basic solutions?
a) Litmus
b) Methyl orange
c) Phenolphthalein
d) Bromothymol blue
What is the pH range of a strong base?
a) 0 to 3
b) 4 to 6
c) 7
d) 11 to 14
Which of the following is a common use of hydrochloric acid?
a) Cleaning metals
b) Baking
c) Food preservation
d) Medicine
What is the term for a solution that resists changes in pH upon addition of small amounts of acid or base?
a) Acidic solution
b) Basic solution
c) Buffer solution
d) Neutral solution
Which pH value represents a solution that is less acidic than a pH 4 solution?
a) 3
b) 4
c) 5
d) 6
What happens to the pH of a solution if the concentration of hydrogen ions increases?
a) The pH increases
b) The pH remains the same
c) The pH decreases
d) The pH becomes neutral
Which of the following is a common example of a buffer solution?
a) Blood
b) Vinegar
c) Lemon juice
d) Sulfuric acid
What is the effect of adding an acid to a basic solution?
a) It makes the solution more basic
b) It makes the solution more neutral
c) It makes the solution more acidic
d) It does not affect the solution
Which acid is used in the production of batteries?
a) Nitric acid
b) Sulfuric acid
c) Hydrochloric acid
d) Phosphoric acid
Which of the following is a strong base commonly used in laboratories?
a) Sodium chloride
b) Potassium nitrate
c) Sodium hydroxide
d) Ammonium chloride
What is the result of a neutralization reaction between an acid and a base?
a) Formation of water and a salt
b) Formation of hydrogen gas
c) Formation of a new acid
d) No reaction occurs
What is the term for a substance that can act as both an acid and a base?
a) Amphoteric
b) Neutral
c) Buffer
d) Reactive
What is the pH range of a typical weak acid?
a) 1 to 3
b) 4 to 6
c) 7 to 9
d) 10 to 12
Which of the following acids is found in citrus fruits?
a) Acetic acid
b) Ascorbic acid
c) Citric acid
d) Lactic acid
Which of the following bases is commonly used in cleaning products?
a) Ammonia
b) Sulfuric acid
c) Citric acid
d) Hydrochloric acid
What is the pH of a solution that has a hydrogen ion concentration of 1 × 10^-8 M?
a) 6
b) 7
c) 8
d) 9
Which pH indicator turns red in acidic solutions and yellow in basic solutions?
a) Universal indicator
b) Bromothymol blue
c) Phenolphthalein
d) Methyl orange
Which of the following is not a property of acids?
a) Sour taste
b) Reacts with metals
c) Turns red litmus blue
d) Produces hydrogen ions in solution
What is the pH of a solution with equal concentrations of H+ and OH- ions?
a) 0
b) 3
c) 7
d) 14
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