CBSE Class 8 Science Sample Paper Set 14

CBSE Class 8 Science Sample Paper Set N. It’s always recommended to practice as many 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.

Q.1 Choose the correct option.

i) Which of the following will displace copper from a solution of copper (II) sulphate?

a) Magnesium b) Aluminium

c) Iron d) All of these

ii) Which of the following is not true?

a) Friction wears down machine parts

b) Friction helps us walk

c) Friction helps a ship move through water

d) Friction produces heat

iii) Cheek cells are -

a) Epithelial cells b) Epidermal cells c) Vascular cells d) Guard cells

iv) Sound travels -

a) the fastest in air b) the fastest in vacuum

c) faster in air than in water d) faster in solids than in air

v) Charge flows from a charged body to an uncharged one -

a) until the entire charge from one flow into the other

b) until they both carry the same charge

c) until they both become uncharged

d) continuously

vi) Seabeds have large deposits of silica derived from -

a) snails b) protozoans c) bacteria d) diatoms

Q.2 Fill in the blanks with suitable words. (1×6=6)

a) The force which opposes the motion of one body over another is ______ force.

b) The matrix in which blood cells are suspended is called ______.

c) The reflecting surface has to be at least ______ away for us to hear an echo distinctly.

d) Sugar fermentation _→ CO² + ______.

e) Electrons carry ______ charge.

f) A ______ of grains is maintained to provide food during emergencies.

Q.3 Give one word for the following. (1×6=6)

a) The metals which allow an electric current to pass through them easily.

b) An instrument used to measure pressure in liquid.

c) The protein part of the egg.

d) The dense tangle of chromosomes inside the nucleus.

e) A reflected sound.

f) A protozoan which can photosynthesize.

Q.4 Define any five of the following. (2×5=10)

a) Symbiosis b) Noble metals c) Pressure

d) Amplitude e) Earthing f) Green manure

Q.5 Give reason for the following. (2×3=6)

a) Why can’t we draw wires from a piece of wood or coal?

b) Why is the moon’s force of gravity less than that of earth?

c) Why do some bacteria form cysts / spores?

Q.6 Draw and label any two of the following. (3×2=6)

a) A nerve cell b) Escherichia coli (A bacterial cell)

c) Paramoecium d) Gold leaf electroscope

Q.7 Answer the following questions in not more than 20 words. (Any 6) (2×6=12)

i) What is animal husbandry? Give two examples of animal husbandry.

ii) Mention two uses of oxygen.

iii) Why do we stain specimens before viewing them under a microscope?

iv) How do bats use echoes?

v) Name the four major groups of bacteria on the basis of their shape.

vi) What would you expect if a plastic ruler is vigorously rubbed with a woollen cloth?

vii) Mention any two disadvantages of frictional force.

Q.8 Answer the following questions in not more than 40 words. (Attempt (i) and any five from the rest).

i) Nandini has prepared Mango pickle for her family. When the pickle was ready, her grandmother asked Nandini to keep the pickle under sunlight for few days. Nandini followed the suggestion of her grandmother. The family enjoyed the taste of pickles till the next summer without spoilage.

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