8th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Nine

8th Standard

    Reg.No. :
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Science

Time : 00:20:00 Hrs
Total Marks : 20

    Part A

    20 x 1 = 20
  1. Quantities other than base quantities are called as

    (a)

    supplementary quantities

    (b)

    derived quantities

    (c)

    professional quantities

    (d)

    energy quantities

  2. Which of the following liquids has more viscosity?

    (a)

    Grease

    (b)

    Water

    (c)

    Coconut oil

    (d)

    Ghee

  3. Focal length is equal to half of the

    (a)

    centre of curvature

    (b)

    axis

    (c)

    radius of curvature

    (d)

    None of the above

  4. Which one of metal possess low tensile strength?

    (a)

    Silver

    (b)

    Copper

    (c)

    Zinc

    (d)

    Aluminium

  5. Limestone contains ______ mainly.

    (a)

    Calcium chloride

    (b)

    calcium carbonate

    (c)

    calcium nitrate

    (d)

    calcium sulphate

  6. The plant body of algae is called as ______.

    (a)

    stem

    (b)

    thallus

    (c)

    leaf

    (d)

    root

  7. The well-developed sporophytic plant body is seen in

    (a)

    Bryophytes

    (b)

    Pteridophytes

    (c)

    Gymnosperms

    (d)

    Angiosperms

  8. Osmosis is the movement of water molecules from a ___________.

    (a)

    Higher concentration to a region of lower concentration.

    (b)

    Lower concentration to a region of higher concentration.

    (c)

    Both of these

    (d)

    None of these

  9. Which of the following substances will absorb more heat energy?

    (a)

    Solid

    (b)

    Liquid

    (c)

    Gas

    (d)

    All the above

  10. Which of the following is true about oxygen?

    (a)

    Completely burning gas

    (b)

    Partially burning gas

    (c)

    Doesn’t support burning

    (d)

    Supports burning

  11. In all atoms of an element

    (a)

    the atomic and the mass number are same.

    (b)

    the mass number is same and the atomic number is different

    (c)

    the atomic number is same and the mass number is different

    (d)

    both atomic and mass numbers may vary.

  12. External ear (pinna )is supported by

    (a)

    bone

    (b)

    cartilage

    (c)

    tendon

    (d)

    capsule

  13. Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

    (a)

    sweat

    (b)

    sebaceous

    (c)

    sweat and sebaceous

    (d)

    None of these

  14. In Tux Math, space cadet option is used for_________.

    (a)

    simple addition

    (b)

    division

    (c)

    drawing

    (d)

    multiplication

  15. Noise is produced by

    (a)

    vibrations with high frequency.

    (b)

    regular vibrations.

    (c)

    regular and periodic vibrations.

    (d)

    irregular and non-periodic vibrations.

  16. The shape of the Earth’s magnetic field resembles that of an imaginary __________.

    (a)

    U-shaped magnet

    (b)

    straight conductor carrying current

    (c)

    solenoid coil

    (d)

    bar magnet

  17. Which of the following is the working principle of Rockets?

    (a)

    Newton’s first law

    (b)

    Newton’s second law

    (c)

    Newton’s third law

    (d)

    All the above

  18. Permanent hardness of water is due to the presence of __________

    (a)

    Sulphates and Chlorides

    (b)

    Dust particles

    (c)

    Carbonates and Bicarbonates

    (d)

    Other soluble particles

  19. Acid mixed with base forms ________

    (a)

    salt and water

    (b)

    salt

    (c)

    water

    (d)

    No reaction

  20. The main component of natural gas is __________

    (a)

    methane

    (b)

    ethane

    (c)

    propane

    (d)

    butane

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