9th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 7

9th Standard

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Science

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

    Part A

    20 x 1 = 20
  1. A car is being driven at a speed of 20 ms-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

    (a)

    +4 ms-2

    (b)

    ‒4 ms-2

    (c)

    ‒0.25 ms-2

    (d)

    +0.25 ms-2

  2. Speed is never ______

    (a)

    fraction

    (b)

    negative

    (c)

    zero

    (d)

    positive

  3. When we mix a drop of ink in water we get a__________

    (a)

    Heterogeneous Mixture

    (b)

    Homogeneous Mixture

    (c)

    Compound

    (d)

    Suspension

  4. Protons and neutrons are collectively called as ________

    (a)

    mesons

    (b)

    neutrino

    (c)

    Nucleons

    (d)

    Positrons

  5. The plant part which exhibits negative geotropism is __________.

    (a)

    root

    (b)

    stem

    (c)

    branch

    (d)

    leaves

  6. Excretory organ of tape worm is

    (a)

    Flame cells

    (b)

    Nephridia

    (c)

    Body surface

    (d)

    Solenocytes

  7. The first systematic approach to the classification of living organisms was made by________.

    (a)

    Hooker

    (b)

    Carolus Linnaeus

    (c)

    Robert

    (d)

    Lister

  8. The polysaccharide found in liver and muscles is ___________ .

    (a)

    Starch

    (b)

    Cellulose

    (c)

    Chitin

    (d)

    Glycogen

  9. ____________ is an electronic device which stores data and information

    (a)

    Telescope

    (b)

    Television

    (c)

    Computer

    (d)

    Radio

  10. A device in which the loss of heat due to conduction, convection and radiation is minimized is

    (a)

    Solar cell

    (b)

    Solar cooker

    (c)

    Thermometer

    (d)

    Thermos flask

  11. When we heat one end of an iron rod, its other end also get heated. Can you say, Which one of the following is behind this?

    (a)

    Convection of heat

    (b)

    Radiation of heat

    (c)

    Insulation of heat

    (d)

    Conduction of heat

  12. If the electronic configuration of an element is 1s2 2S2 2p6 3s2 3p1, then it will occupy___________ block of the periodic table.

    (a)

    s

    (b)

    p

    (c)

    d

    (d)

    f

  13. Statement (A) : Covalent compounds are bad conductor of electricity.
    Reason (B) Covalent compounds contain charged particles (ions)

    (a)

    B explains A

    (b)

    B does not explain A

    (c)

    Both A & B are right

    (d)

    Both A & B are wrong

  14. A meristematic tissue consists of

    (a)

    Immature cells which are in a state of division and growth

    (b)

    Mature cells

    (c)

    Non-living cells

    (d)

    Sclerenchyma cells

  15. To prevent the entry of food into the trachea, the opening is guarded by__________

    (a)

    epiglottis

    (b)

    glottis

    (c)

    hard palate

    (d)

    soft palate

  16. Lysozyme is seen in_______

    (a)

    gastric juice

    (b)

    intestinal juice

    (c)

    Bile

    (d)

    saliva

  17. Which of the following statement best describes frequency?

    (a)

    the number of complete vibrations per second.

    (b)

    the distance travelled by a wave per second.

    (c)

    the distance between one crest of wave and the next one.

    (d)

    the maximum disturbance caused by a wave.

  18. Which of the following are infrasonic waves?

    (a)

    5 kHz

    (b)

    25 Hz

    (c)

    10 Hz

    (d)

    15000 Hz

  19. Which of the following is highly toxic?

    (a)

    Carbon dioxide

    (b)

    Carbon monoxide

    (c)

    Calcium carbonate

    (d)

    Sodium bicarbonate

  20. Which one of the following is not an exotic breed of cow?

    (a)

    Jersey

    (b)

    Holstein-Friesan

    (c)

    Sahiwal

    (d)

    Brown Swiss

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