CBSE Class 8 Science Science and Technology Assignment Set B

Read and download free pdf of CBSE Class 8 Science Science and Technology Assignment Set B. Get printable school Assignments for Class 8 Science. Standard 8 students should practise questions and answers given here for Science And Technology Science in Grade 8 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 8 Science prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

Assignment for Class 8 Science Science And Technology

Class 8 Science students should refer to the following printable assignment in Pdf for Science And Technology in standard 8. This test paper with questions and answers for Grade 8 Science will be very useful for exams and help you to score good marks

Science And Technology Class 8 Science Assignment


Section – A : Chemistry

1) What is friction? What are the two main factors on which the force of friction depends?

2) What is the principle used in ball bearings? How are ball bearings useful to us?

3) What is viscous drag? State three factors on which it depends.

4) With the help of a diagram discuss the terms: Amplitude, Time Period, and Frequency of a sound wave.

5) Draw a labeled diagram of human ear, explaining how the energy of the sound wave is transmitted to the nerves in the cochlea.

6) Name the three types of musical instruments, giving one example of each. Describe how sound is produced in each type.

7) Using the example of a loudspeaker, explain how sound travels.

8) Define the following terms: Electrolyte, Electrolysis, Electrodes,

9) How can you electroplate an aluminium chain with gold? Explain with the help of circuit diagram.

10) Describe the electrolysis of acidulated water.


Section – B : Chemistry

1) Write differences between metals and non-metals on the basis of malleability, conductivity, melting point and tensile strength.

2) What do you mean by destructive distillation of coal? Write its products and their uses.

3) How is coal formed?

4) Write the chemical equation for the following:

a) Reaction of sodium with water.

b) Reaction of magnesium oxide with water.

c) Reaction of iron with copper sulphate.

5) What is reactivity series? Arrange these elements in descending order of reactivity. Fe , K , Zn , Na , Al , Cu , Au , Ag


Section – C : Biology

1. What is vaccine? Describe the role of micro-organisms in vaccination.

2. Define carriers. How carriers spread diseases? Explain with one example and also mention the preventive measures.

3. Explain three common methods to preserve food items along with examples.

4. ‘Percentage of nitrogen in the atmosphere remains more or less constant’. Explain and justify.

5. Write four major groups of micro-organisms and draw well labeled diagram of one microorganism of each group.

6. Define crops. How crops can be classified on the basis of the season. Explain with examples.

7. Describe two economical modern methods of irrigation.

8. Why manures should be preferred over fertilizers?


Click on link below to download CBSE Class 8 Science Science and Technology Assignment Set B

More Study Material