Updated by Tiwari Academy
on June 13, 2023, 10:47 AM
on June 13, 2023, 10:47 AM
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 2024-25
| Class: 7 | Science |
| Chapter: 5 | Acids, Bases and Salts |
| Contents: | Multiple Choice Questions MCQ Tests |
Class 7 Science Chapter 5 MCQ Tests for 2024-25
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
Which of the following statement(s) is or are correct?
[A]. Lemon water is basic in nature.
[B]. A compound if acidic will turn all indicators red.
[C]. Common salt dissolved in water turns blue litmus red.
[D]. None of the above.
Q2
Boojho wants to know different colours in different solutions with the help of red litmus paper. Consider the following sentences and choose the correct one and help him:
[A]. Milk in water shows no change.
[B]. Baking powder in water turns blue.
[C]. Blue vinegar in water source no change.
[D]. All the above.
Q3
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.
Q4
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.
Q5
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.
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
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.
Q8
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.
Q9
Boojho appeared in class test where he wrote some statements but he confused to know the correct statement. Would you help him to know that?
[A]. Ants have formic acid in their sting, that is why stinging of ants become painful.
[B]. Getting relief from ant sting by rubbing baking soda.
[C]. Heat always evolves in neutralization, salt and water are also formed in neutralization.
[D]. All of the above.
Q10
Mohan appeared in class test where he wrote some statements about acids, but he confused to know the correct statement. Would you help him to know that?
[A]. They have a sour taste.
[B]. They are corrosive in nature if it falls on the skin, it can cause burns.
[C]. They are good conductors of electricity, as they allow the passage of electric current through them.
[D]. All the above.
Q11
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.
Q12
Consider the following statements, choose the correct one:
[A]. Both acids and bases change colour of all indicators.
[B]. If an indicator gives a colour change with an acid it does not give a change with a base.
[C]. If an indicator changes colour with a base but does not change colour with an acid.
[D]. Change of colour in an acid and a base depends on the type of indicators.
Q13
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.
Q14
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.
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
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.
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
Consider the following statements and choose the incorrect one:
[A]. Sodium hydroxide and potassium hydroxide are found in soap.
[B]. Calcium hydroxide is found in lime water.
[C]. Magnesium hydroxide is found in milk of magnesia.
[D]. Sodium hydroxide or ammonia solution is found in window cleaners.
Q21
Which of the following is an acid base indicator?
[A]. Vinegar
[B]. Lime water
[C]. Turmeric
[D]. Baking soda
Q22
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
Q23
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.
Q24
Products of a neutralization reaction are always:
[A]. An acid and a base
[B]. An acid and a salt
[C]. A salt and water
[D]. A salt and a base
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
