DAV Class 8 Question Paper Science
In this page we have given DAV Class 8 Previous Year Question Paper Science. Students of DAV Schools can download this official Pdf for their Exam Preparation.
Paper – 1
(1) Name the comet that was last seen in the year 1986 an is expected to be seen again in 2062.
(2) Name the two kinds of photoreceptors present in the human eye.
(3) Name the disease that destroyed the potato crop completely leading to Irish Famine in 1740-41.
(4) Write the alternative name used for endrocrine glands.
(5) A burning matchstick is brought near wood and petrol simultaneously. Which substance will catch fire first? Give reason.
(6) Write the significance of ciliary muscles in human eye.
(7) Name the two metals that can be cut with a knife.
(8) Name the two metal plate with an iron rod, the plate produced ‘’25 vibrations in one second.’’ Name the term that describes the underlined expression and write its SI unit.
(9) A male gamete ‘X’ unites with a female gamete ‘Y’ to from a single cell ‘Z’.
(a) Name the process.
(b) Identify X, Y and Z.
(10) Draw a neat diagram of a plant cell and label the following parts :
(a) Cell wall
(b) Nucleus
(11) Sir Issac Newton passed a narrow beam of write onto a glass prism and observed that it gets split into seven colours.
(a) Name the phenomenon.
(b) Name the natural phenomenon associated with this phenomenon.
(12) What do you understand by the following terms :
(a) Water pollution
(b) Water pollutant
(13) (a) Why do we say that ‘’Rayon is not completely an artificial fibre’’?
(b) Name the synthetic fibre which appears to resemble wool.
(14) Give two reasons to justify that it is not advisable to wear synthetic clothes while working in the kitchen.
(15) State to factors on which the process of electrolysis depends.
(16) (a) Name the structure, present in birds that helps them to produce their characteristic sounds.
(b) How do frogs produce their croaking sounds?
(17) Neha found some impurities in her pot containing drinking water.
(a) Suggest any two methods of purifying this water.
(b) State two purpose of purification.
(18) Give reasons for the following :
(i) Milk should b pasteurized.
(ii) Pasteurised milk should be refrigerated
(b) Write the disadvantage of pasteurization.
(19) Give reason :
‘’Venus is the brightest and hottest planet in our solar system.’’
OR
How does the thin atmosphere of the earth play a vital in protecting and preserving the life on earth.
(20) (a) How can the properties of a metal be modified
(b) In what way is the homogenous mixture better than the actual metal?
(c) Write the composition of German Silver and its use.
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Also See: DAV Class 8 all Chapter Question Answer