9th Standard English Medium Science Subject Book Back 1 Mark Questions with Solution Part - I

9th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 15
    15 x 1 = 15
  1. Rulers, measuring tapes and metre scales are used to measure

    (a)

    Mass

    (b)

    Weight

    (c)

    Time

    (d)

    Length

  2. Slope of the velocity - time graph gives

    (a)

    speed

    (b)

    displacement

    (c)

    distance

    (d)

    acceleration

  3. _________ is used as reflectors in torchlight.

    (a)

    concave mirror

    (b)

    convex mirror

    (c)

    plane mirror

    (d)

    None of these

  4. The constituents that form a mixture are also called

    (a)

    Elements

    (b)

    Compounds

    (c)

    Alloys

    (d)

    Components

  5. Change in the number of neutrons in an atom changes it to

    (a)

    an ion

    (b)

    an isotope

    (c)

    an isobar

    (d)

    another element

  6. The tropic movement that helps the climbing vines to find a suitable support is ________. 

    (a)

    phototropism

    (b)

    geotropism

    (c)

    thigmotropism

    (d)

    chemotropism

  7. Mesoglea is present in

    (a)

    Porifera

    (b)

    Coelenterata

    (c)

    Annelida

    (d)

    Arthropoda

  8. The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

    (a)

    James Lind

    (b)

    Louis Pasteur

    (c)

    Charles Darwin

    (d)

    Isaac Newton

  9. _________ belongs to the generation IV of the computer

    (a)

    Microprocessor

    (b)

    Artificial intelligence

    (c)

    Transistor

    (d)

    Vaccum Tubes

  10. The specific heat capacity of water is

    (a)

    4200 Jkg-1K-1

    (b)

    420 Jg-1K-1

    (c)

    0.42 Jg-1K-1

    (d)

    4.2 Jkg-1K-1

  11. Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

    (a)

    atomic numbers

    (b)

    atomic masses

    (c)

    similarities

    (d)

    anomalies

  12. Atoms having 1, 2 or 3 electrons in its valence shell will readily form_____________

    (a)

    cation

    (b)

    anion

    (c)

    Calcium

    (d)

    electron

  13. Acids in plants and animals are organic acids. Whereas acids in rocks and minerals are_________

    (a)

    Inorganic acids

    (b)

    Weak acids

    (c)

    citric acid

    (d)

    ascorbic acid

  14. The fibres consists of

    (a)

    Parenchyma

    (b)

    Sclerenchyma

    (c)

    Collenchyma

    (d)

    None of above

  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

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