Class 7 Science Chapter 5 MCQ

Class 7 Science Chapter 5 MCQ (Multiple Choice Questions) of Acids, Bases and Salts. All the important questions from chapter 5 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 2020-2021

Class: 7Science
Chapter: 5Acids, Bases and Salts
Contents:Multiple Choice Questions MCQ Tests

Class 7 Science Chapter 5 MCQ Tests for 2020-21

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

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.
Q2

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.




Q3

A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist realised that the soil of his field was either too acidic or two basics. What remedy would you suggest?

[A]. It can be treated with quicklime (calcium oxide) base.
[B]. It can be treated with slaked lime (calcium hydroxide) base.
[C]. It can be treated with organic matter (manure or compost).
[D]. All the above.
Q4

Mohan is writing some statements about bases, choose the correct statements and help him:

[A]. They have bitter taste and soapy touch.
[B]. Strong bases like sodium hydroxide are corrosive in nature.
[C]. They react with acids to neutralize them and are hence called antacids.
[D]. All the above.
Q5

Neutralization reaction is a:

[A]. Physical and reversible change.
[B]. Physical change that cannot be reversed.
[C]. Chemical and reversible change.
[D]. Chemical change that cannot be reversed.
Q6

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.



Q7

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.
Q8

Consider the following statements, choose the incorrect one:

[A]. Acetic acid is found in vinegar.
[B]. Formic acid is present in ant’s sting.
[C]. Citric acid is present in tamarind.
[D]. Lactic acid is present in curd and in milk.



Q9

Which of the following is an acid base indicator?

[A]. Vinegar
[B]. Lime water
[C]. Turmeric
[D]. Baking soda
Q10

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



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