Everyday Science · Everyday & Industrial Chemistry · page 2 of 8

Acids Used in Everyday Life MCQs with Answers

Includes 7 past paper MCQs (marked).

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Acids Used in Everyday Life MCQs (11–20)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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11.
The colour of methyl orange in alkali is ?
Correct Answer: B. Yellow
One-liner
Methyl orange turns yellow in alkaline (basic) solutions.
12.
Past Paper MCQ
Which acid is used in fermentation process of food?
Correct Answer: B. Acetic Acid
One-liner
Acetic Acid is the acid used in the fermentation process of food.
13.
If pH = 3, the solution is?
Correct Answer: D. Strong acid
One-liner
A solution with pH = 3 is a strong acid because pH values below 7 indicate acidity, and the lower the pH (closer to 0), the stronger the acid.
14.
Red + blue litmus paper when dipped in neutral solution remain ?
Correct Answer: D. Unchanged
One-liner
Red and blue litmus papers remain unchanged when dipped in a neutral solution.
15.
Lactic Acid is found in ?
Correct Answer: A. Yogurt
One-liner
Lactic acid is found in Yogurt.
16.
The pH range of acids is ?
Correct Answer: D. 0-7
One-liner
The pH range of acids is 0-7, with values below 7 indicating acidic nature.
17.
The pH is defined as?
Correct Answer: D. −log[H⁺]
One-liner
pH is defined as the negative logarithm (base 10) of hydrogen ion concentration, i.e., −log[H⁺].
18.
Which acid is used in the preparation of soda or cold drinks?
Correct Answer: C. Carbonic acid
One-liner
Carbonic acid is the acid used in the preparation of soda or cold drinks, formed by dissolving carbon dioxide in water under pressure.
19.
Which acid is formed in ants?
Correct Answer: B. Formic acid
One-liner
Ants produce formic acid, which is the simplest carboxylic acid and is responsible for the burning sensation caused by ant bites.
20.
Which one is more acidic?
Correct Answer: B. Milk
One-liner
Milk is more acidic among the given options, with a pH around 6.5–6.7.

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Acids Used in Everyday Life MCQs with Answers

Acids Used in Everyday Life MCQs (11–20)

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