CBSE Class 8 Science Sample Paper Set I

CBSE Class 8 Science Sample Paper Set I. It’s always recommended to practice as mane sample papers as possible before the examinations. Students can download the sample papers and also question papers of previous years to practice and score better marks in examinations. Refer to other links too for more sample papers.

SECTION -A

Q1. What is cutting of mature plants called?

Ans1- Harvesting.

Q2. What is the term given to lowest temperature at which a substance burns.

Ans2 – Ignition temperature

Q3. Define Deforestation.

Ans3- Clearing of forests /trees and using the land for other purposes.

Q4. Name the process of reproduction in hydra.

Ans 4- Budding.

Q5. Name the device used to test whether an object is carrying a charge or not.

Ans5- Electroscope.

Q6. What is carbonization?

Ans6 – Carbonisation is the Slow process of Formation of coal from dead vegetation,under high temperature, pressure and absence of oxygen.

 

 

Q18. I) Define light year.

ii) What are artificial satellites ?

iii) What are their uses (Any Two).

 

Ans 18-Light year is the distance travelled by light in one year.

(ii)Artificial satellites are manmade satellites which revolve around a planet/earth.

(iii)Uses-Remote sensing/weather forecasting/ tele-communication.

 

Q19. Mention one use each of (i) Coke (ii) Coal gas (iii) Bitumen.

Ans 19- Coke- Extraction of metals/steel formation Coal gas –As a fuel

Bitumen- for road surfacing/paints

 

Q20. i) What are the advantages of using manures?

ii) Explain how fertilizers are different from manures. 

Ans 20- i) Manures increases water holding capacity of soil.

Makes soil porous for easy exchange of gases/friendly microbes increases.

ii) Difference between manure and fertilisers

1. Manure is an organic substance.

2.It is obtained from the decomposition of plant or animal wastes

3. It rich in multiple nutrients.

1. Fertilisers are chemical substances.

2. It is produced in factories

3. They are rich in a particular nutrient.

 

Q21. Define asexual reproduction. Name two methods of asexual reproduction .Explain any one and draw the diagram.

Ans21- Asexual reproduction is that in which new generation is produced from a single parent withoutfertilisation.

Two methods of asexual reproduction are

1 Budding in hydra

2. Binary fission in amoeba

Amoeba is a single-celled organisms. It begins the process of reproduction by the division of its nucleus into two nuclei. This is followed by division of its body into two, each part receiving a nucleus. Finally, two amoebae are produced from one parent amoeba .This type of asexual reproduction is called binary fission.

 

 

Please click the link below to download CBSE Class 8 Science Sample Paper Set I.