8th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - I

8th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 15
    15 x 1 = 15
  1. SI unit of temperature is __________

    (a)

    celsius

    (b)

    fahrenheit

    (c)

    kelvin

    (d)

    ampere

  2. The value of the atmospheric pressure at sea level is

    (a)

    76 cm of mercury column

    (b)

    760 cm of mercury column

    (c)

    176 cm of mercury column

    (d)

    7.6 cm of mercury column

  3. The spherical mirror with a reflecting surface curved inward is called

    (a)

    convex mirror

    (b)

    concave mirror

    (c)

    curved mirror

    (d)

    None of the above

  4. The Pictorial symbol for water given by the alchemists was

    (a)

    (b)

    (c)

    (d)

  5. ______ metal undergoes rusting.

    (a)

    tin

    (b)

    sodium

    (c)

    copper

    (d)

    iron

  6. _______ shows both living and nonliving characteristics.

    (a)

    Protozoa

    (b)

    virus

    (c)

    bacteria

    (d)

    Fungi

  7. An example for colonial form of algae is

    (a)

    Oscillatoria

    (b)

    Nostac

    (c)

    Volvox

    (d)

    Chlorella

  8. In the absence of oxygen, glucose is broken down in to ________.

    (a)

    Lactic acid

    (b)

    Citric acid

    (c)

    Acetic acid

    (d)

    Nitric acid

  9. Who is the father of computer?

    (a)

    Martin Luther King

    (b)

    Graham Bell

    (c)

    Charlie Chaplin

    (d)

    Charles Babbage

  10. If you apply some heat energy to a substance, which of the following can take place in it?

    (a)

    Expansion

    (b)

    Increase in temperature

    (c)

    Change of state

    (d)

    All the above

  11. The electrification of two different bodies on rubbing is because of the transfer of

    (a)

    neutrons

    (b)

    protons

    (c)

    electrons

    (d)

    protons and neutrons

  12. Solvay process is a method to manufacture

    (a)

    lime water

    (b)

    aerated water

    (c)

    distilled water

    (d)

    sodium carbonate

  13. Cathode rays are made up of

    (a)

    neutral particles

    (b)

    positively charged particles

    (c)

    negatively charged particles

    (d)

    None of the above

  14. Which one of the following organisms lack muscles and skeleton for movement?

    (a)

    Dog

    (b)

    Snail

    (c)

    Earth worm

    (d)

    Human being

  15. The period at which an organism attains sexual maturity is called _____________

    (a)

    puberty

    (b)

    adolescence

    (c)

    growth

    (d)

    maturity

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