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Assignment for Class 7 Science Chapter 5 Acids, Bases And Salts
Class 7 Science students should refer to the following printable assignment in Pdf for Chapter 5 Acids, Bases And Salts in Class 7. This test paper with questions and answers for Class 7 Science will be very useful for exams and help you to score good marks
Chapter 5 Acids, Bases And Salts Class 7 Science Assignment
I. Fill in the blanks:-
1. An acid is ____________ by a base .
2. Phenolphthalein is an __________ indicator.
II. Choose the correct option:-
1. A Soap Solution is –
a) Basic b) Acidic c) Alkaline d) Neutral
2. CO2 + H2O →
a) Sulphuric acid b)Nitric acid c) Carbonic acid d) None
III Name the following:-
1. Soluble bases.
2. A Chemical used as a food preservative.
3. Chemical name of Chile Salt Petre.
IV Define the following:-
1. Acid Rain 2. Neutralisation Reaction 3. Acid-Base Indicator
V Give Reasons:-
1. Non Metal Oxides are called Acidic .
2. Metal Oxides are Basic
3. Sour things are not kept in metal pots
4. Metal Oxides such as MgO are used for making refractory bricks.
VI Complete the Equations:-
1. ________ + 2O2 → CO2 + H2O
2. 3NO2 + H2O → NO + _______ .
3. 2NaOH + H2SO4 → _________ + 2H2O
4. CaCO3 → ________ + CO2
VII Answer in 20 words :-
1 Name three mineral acids and give their formulae?
2 What is acid and base?
VIII Answer in 40 words:-
1. What are general properties of bases?
2. What are general properties of acids?
3. Name an acidic gas which is discharged into the atmosphere on the burning of fuels like coal
& natural gas. How is this gas formed?
IX Answer in 100 words:-
1. Describe an activity to show the effect of acid on carbonates and hydrogen carbonates?
2. What is acid rain? How is it formed? Mention three bad effects of acid rain .
X Write one use of the following:-
1. Sulphuric acid.
2. Citric acid
3. Sodium Carbonate
4. Potassium Nitrate
5. Calcium phosphate
Q.1 Fill in the blanks.
i) An acid testes s_______________
ii) A base tastes b__ tt____________
iii) LItmus, a natural indicator is extracted from Li_____________.
iv) An indicator used in a neutralisation reaction is phe___ph_____lein.
v) Sugar is a n....u............l substance.
Q.2 Match the following.
Column I Column II
a) An antacid i) Formic acid
b) An Ant ii) Milk of magnesia
c) China Rose iii) Turns red litmus blue.
d) An acid iv) A natural indicator
e) A base v) Turns blue litmus red.
Answer : a. b. c. d. e.
Q.3 Bring a soil sample of your area, find out weather it is acidic, basic or neutral with the help of red or blue litmus solution /paper. Write this observation in the space given below.
Q.4 According to their nature give proper place to each substance given below.
Curd, Common Salt, Vinegar, Soap, Sugar, Lime water, Lemon Juice, Window Cleaner.
1. Acidic Nature .................
2. Basic Nature .................
3. Neutral Substances .................
Q.5 Complete the following table
| S.No. Name of Substance | Litmus used | Colourchange |
| 1 Curd 2. Salt 3. Lime water 4. Lemon Juice 5. Window Cleaner 6. Sugar 7. Vinegar 8. Baking soda Blue | Red Blue Red Blue Blue Red Blue Blue | No change |
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CBSE Class 7 Science Chapter 5 Acids, Bases And Salts Assignment
We hope you liked the above assignment for Chapter 5 Acids, Bases And Salts which has been designed as per the latest syllabus for Class 7 Science released by CBSE. Students of Class 7 should download and practice the above Assignments for Class 7 Science regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 7 Science practice sheet in Pdf. All questions have been designed for Science by looking into the pattern of problems asked in previous year examinations. You can download all Revision notes for Class 7 Science also absolutely free of cost. Lot of MCQ questions for Class 7 Science have also been given in the worksheets and assignments for regular use. All study material for Class 7 Science students have been given on studiestoday. We have also provided lot of Worksheets for Class 7 Science which you can use to further make your self stronger in Science.
What are benefits of doing Assignment for CBSE Class 7 Science Chapter 5 Acids, Bases And Salts?
a. Score higher marks: Regular practice of Science Class 7 Assignments for chapter Chapter 5 Acids, Bases And Salts will help to improve understanding and help in solving exam questions correctly.
b. As per CBSE pattern: All questions given above follow the latest Class 7 Science Sample Papers so that students can prepare as per latest exam pattern.
c. Understand different question types: These assignments include MCQ Questions for Class 7 Science with answers relating to Chapter 5 Acids, Bases And Salts, short answers, long answers, and also case studies.
d. Improve time management: Daily solving questions from Chapter 5 Acids, Bases And Salts within a set time will improve your speed and accuracy.
e. Boost confidence: Practicing multiple assignments and Class 7 Science mock tests for Chapter 5 Acids, Bases And Salts reduces exam stress.
How to Solve CBSE Class 7 Science Chapter 5 Acids, Bases And Salts Assignment effectively?
a. Start with Class 7 NCERT and syllabus topics: Always read the chapter carefully before attempting Assignment questions for Class 7 Science Chapter 5 Acids, Bases And Salts.
b. Solve without checking answers: You should first attempt the assignment questions on Chapter 5 Acids, Bases And Salts yourself and then compare with provided solutions.
c. Use Class 7 worksheets and revision notes: Refer to NCERT Class 7 Science worksheets, sample papers, and mock tests for extra practice.
d. Revise tricky topics: Focus on difficult concepts by solving Class 7 Science MCQ Test.
e. Maintain notebook: Note down mistakes in Chapter 5 Acids, Bases And Salts assignment and read them in Revision notes for Class 7 Science
How to practice CBSE Class 7 Science Chapter 5 Acids, Bases And Salts Assignment for best results?
a. Solve assignments daily: Regular practice of Chapter 5 Acids, Bases And Salts questions will strengthen problem solving skills.
b.Use Class 7 study materials: Combine NCERT book for Class 7 Science, mock tests, sample papers, and worksheets to get a complete preparation experience.
c. Set a timer: Practicing Class 7 Science Chapter 5 Acids, Bases And Salts assignment under timed conditions improves speed and accuracy.
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All topics given in Chapter 5 Acids, Bases And Salts Science Class 7 Book for the current academic year have been covered in the given assignment
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Latest syllabus issued for current academic year by CBSE has been used to design assignments for Chapter 5 Acids, Bases And Salts Class 7
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