CBSE Class 8 Science Question Paper Set 18

CBSE Class 8 Science Question Paper Set R.Revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects based on CBSE and NCERT guidelines. Students and parents can download free a collection of all study material issued by various best schools in India. The study material has been carefully compiled by the best teachers in India. The students should practice the questions database to get better marks in examination. Please refer to other links for free download of high quality study material. Based on CBSE and NCERT guidelines. Based on the same pattern as released by CBSE every year. Study material for final/ term/ SA1/ SA2 Examinations conducted by various schools affiliated to Central Board of Secondary Education (CBSE) in India and abroad. CBSE Study material has been compiled to help students preparation which will helps the students to concentrate more in areas which carry more marks.

Q.I Multiple choice questions - 

1. Cellulose is made up of a large number of ................... units -

(a) amide (b) amino (c) glucose (d) sucrose.

2. Which of the following is the most reactive metal ?

(a) Iron (b) Zinc (c) Copper (d) potassium

3. Relationship beween a biotic community and an abiotic environment is called -

(a) Biodiversity (b) Ecosystem (c) Symbiosis (d) Survival

4. Which of the following is not an inflammable substance ?

(a) LPG (b) Kerosene (c) Dry grass (d) wood

5. Rhizobium bacteria is found in

(a) Leaves (b) Stem (c) Root-nodules (d) flowers

6. The process which ensures continuity of life on the earth is -

(a) Respiration (b) Excretion (c) Reproduction (d) Digestion

7. The carrier of genetic characteristics from the parents to the off spring .............

(a) Genes (b) Mitrochondria (c) Ribosomes (d) Reticulum

8. The remains of the dead plants and animals burried under the earth are called -

(a) fossils (b) fuels (c) swamps (d) coalgas.

9. Lactobacillus bacteria help to make

(a) bread (c) pastries (c) cake (d) curd

II. Very short answer questions - 

1. What are weedicides ? Name one weedicide.

2. Name any two antibiotics.

3. Name any two examples of thermoplastics.

4. What happens when copper versel is exposed to maist air for a long time ?

5. What is meant by 'refining of petroleum ?

6. What is meant by green house effect ?

7. What is species ? Give one example.

8. What is biodiversity ?

9. Name two animals each. which reproduce by -

(a) arexual mode (b) sexual mode

10. What are the functions of testes ?

III. Short answer type questions - (any 6) 

1. What are fertillizers ? Name any two fertillizers.

2. What are eukanyotic cells ? Name any two eukaryotes.

3. What are national parks ? Name any two national parks in India.

4. Name any two diseases each caused by -

\(a) Bacteria and (b) viruses in cows and buffaloes.

5. Write any two uses of plastics.

6. Why gold and silver are used for making jewellery ?

7. How can we conserve fossil fuels ?

8. What is meant by spontaneous combustion ?

Give two example of spontaneous combustion. 

Please refer to attached file for CBSE Class 8 Science Question Paper Set R.