Updated on June 13, 2023
by Tiwari Academy
by Tiwari Academy
Class 7 Science Chapter 4 MCQ (Multiple Choice Questions) of Acids, Bases and Salts. All the important questions from chapter 4 of grade 7 science are given here in the form of MCQs for the preparation of class assessments, school tests and terminal exams. These MCQ Quiz provides a complete practice of the chapter and help to score better in all exams. Questions are taken from intext paragraphs, intext questions and exercises questions of standard 7 science chapter 5 Acids, bases and salts.
Class 7 Science Chapter 5 MCQ for 2025-26
| Class: 7 | Science |
| Chapter: 5 | Acids, Bases and Salts |
| Contents: | Multiple Choice Questions MCQ Tests |
Class 7 Science Chapter 5 MCQ Tests for 2025-26
Class 7 Science Chapter 5 MCQ tests are given below. There are more than 75 MCQ are given below covering the entire chapter 5 of class 7 science NCERT Book. Practice with these questions after reading NCERT Book to be confident in the concepts of chapter.
Q1
The correct way of making a solution of acid in water is to:
[A]. Add water to acid.
[B]. Add acid to water.
[C]. Mix acid and water simultaneously.
[D]. Add water to acid in a shallow container.
Q2
Consider the following statements, choose the incorrect one:
[A]. Calamine can be used to treat ant’s sting.
[B]. Lime water turns red litmus blue.
[C]. Phenolphthalein is a natural indicator.
[D]. None of the above.
Q3
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed?
[A]. Yellow in both acid and base.
[B]. Yellow in acid and red in base.
[C]. Pink in acid and yellow in base.
[D]. Red in acid and blue in base.
Q4
Consider the following sentences and choose the correct statements:
[A]. Tartaric acid present in unripe mangoes.
[B]. Formic acid present in ant sting.
[C]. Lactic acid present in curd.
[D]. All the above.
Q5
Paheli is writing some statements. She wants to know in which of the following statements is or are incorrect?
[A]. Lemon juice and vinegar taste sour because they contain acid.
[B]. Turmeric and litmus are natural acid base indicator.
[C]. Indicator phenolphthalein gives yellow colour with lime water.
[D]. None of the above.
Q6
Boojho is writing some statements, choose the correct statement and help him:
[A]. Heat is responsible for increase in temperature during a neutralization reaction.
[B]. Turmeric is a natural indicator and gives pink colour in basic solution.
[C]. Acids are good conductors of electricity; as they allow the passage of electric current through them.
[D]. All the above.
Q7
When the soil is too basic, plants do not grow well in it. To improve its quality, what must be added to the soil?
[A]. Organic matter
[B]. Quick lime
[C]. Slaked lime
[D]. Calamine solution
Q8
Consider the following statement and choose the correct option(s):
[A]. Our stomach contains hydrochloric acid.
[B]. Hydrochloric acid (HCL) helps us to digest food.
[C]. We take milk of magnesia in in digestion.
[D]. All of the above.
Q9
Paheli is writing some statement which is given by her teacher. Would you help him to choose the correct statements?
[A]. ubstances which are neither acidic not basic are said to be neutral.
[B]. Litmus and turmeric are natural indicators.
[C]. An acid and a base neutralise each other to form a salt.
[D]. All the above.
Q10
“Litmus” natural dye in an extract of which of the following:
[A]. China rose (gudhal)
[B]. Beetroot
[C]. Lichen
[D]. Blueberries Jamun
Q11
Pritam is writing some statements about bases, choose the correct statements and help him:
[A]. Tooth decay is caused by the presence of a base.
[B]. Indicator is a substance which shows different color in acidic and basic solution.
[C]. Sodium Hydroxide turns blue Litmus red.
[D]. All the above.
Q12
A solution changes the colour of turmeric indicator from yellow to red. The solution is:
[A]. Basic
[B]. Acidic
[C]. Neutral
[D]. None of these.
Q13
Boojho is writing some statements about indicators. In which of the following statements is or are incorrect? Help him.
[A]. An indicator tells us whether the substance we are testing is an acid or a base by change in its colour.
[B]. Litmus, china rose and turmeric are naturally occurring indicators.
[C]. Phenolphthalein is a synthetic indicator.
[D]. When litmus is added to a basic solution it turns red.
Q14
Consider the following statements and choose the incorrect statement(s):
[A]. China rose indicator is a light pink coloured solution which is extracted from the red flowers of china rose plant with water.
[B]. Acid turns china rose indicator to magenta (deep pink).
[C]. Bases turn china rose indicator to blue.
[D]. If a drop of the given solution turns china rose indicator from light pink to green, then the given solution will be basic in nature.
Q15
Boojho is writing about turmeric indicator as turmeric is natural indicator and more details. Choose the correct statements written by him:
[A]. Turmeric turns red in basic solution.
[B]. Turmeric paper is yellow in acid solution.
[C]. Bases turn the yellow turmeric paper to red.
[D]. All the above.
Q16
Which of the following sets of substances contains acids?
[A]. Grapes, lime water
[B]. Vinegar, soap
[C]. Curd, milk of magnesia
[D]. Curd, vinegar
Q17
Paheli is writing some statements. She wants to know in which of the following statements is or are incorrect?
[A]. Phenolphthalein indicator is natural acid base indicator.
[B]. Phenolphthalein indicator is colourless in acid solution.
[C]. Phenolphthalein indicator is gives pink colour in basic solution.
[D]. The substance whose solution do not change the colour of any indicator, called neutral substances.
Q18
Which of the following statement is or are correct?
[A]. Ascorbic acid is present in amla and citrus fruit (lemon and oranges).
[B]. Tartaric acid is present in tamarind, unripe grapes and unripe mangoes.
[C]. Oxalic acid is present in spinach (palak).
[D]. All the above.
Q19
On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
[A]. Basic
[B]. Either acidic or basic
[C]. Either acidic or neutral
[D]. Basic or neutral
Q20
Paheli is writing some statement, which is given by her teacher. Would you help him to choose the incorrect statements?
[A]. Minerals acid are also known as laboratory acids.
[B]. Baking powder used in making cakes and biscuit contains tartaric acid.
[C]. Carbonic acid is used in fizzy soft drink and soda water.
[D]. Nitric acid, hydrochloric acid and acetic acid are example of strong acids.
Q21
Boojho appeared in class test where he wrote some statements but he confused to know the incorrect statement. Would you help him to know that?
[A]. Sodium Hydroxide is commonly known as caustic soda.
[B]. Potassium Hydroxide is commonly known as caustic potash.
[C]. A base which is soluble in water is called an alkali.
[D]. Sodium and potassium hydroxide are weak bases but handled very carefully.
Q22
Which of the following is an acid base indicator?
[A]. Vinegar
[B]. Lime water
[C]. Turmeric
[D]. Baking soda
Q23
Boojho and Paheli went to a soda shop and took soda for drink. Boojho wants to know that which of the base is safe to drink?
[A]. Calcium hydroxide
[B]. Ammonium hydroxide
[C]. Sodium carbonate
[D]. Magnesium hydroxide
Q24
Consider the following statements, choose the incorrect one:
[A]. When an acidic solution is mixed with a basic solution, they neutralize each other, forming salt and water.
[B]. Neutral is the solution which does not change the colour of either red or blue litmus.
[C]. Phenolphthalein gives pink colour in base type of solution.
[D]. Red litmus gives blue colour in lemon juice.
Q25
In which of the following statements is or are incorrect?
[A]. To cure indigestion and get rid of pain, we can take bases called antacids.
[B]. Antacids are a group of mild bases but have toxic effects on the body.
[C]. Magnesium oxide is common antacid used for curing indigestion.
[D]. Baking soda is also used as antacid.
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Last Edited: June 13, 2023
