9th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Three

9th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. The measure the diameter of a thin wire_________is used.

    (a)

    Screw gauge

    (b)

    Water gauge

    (c)

    Meter gauge

    (d)

    Wind gauge

  2. The centre of the reflecting surface of a spherical mirror is _____________________

    (a)

    centre of curvafure

    (b)

    focus

    (c)

    pole

    (d)

    radius of curvature

  3. Particles of matter are in constant motion as they posses______energy.

    (a)

    potential

    (b)

    kinetic

    (c)

    solar

    (d)

    wind

  4. Our bodies contain radioisotopes such as ___________which continuously emit radiation.

    (a)

    Potassium 40

    (b)

    Iodine 131

    (c)

    Cobalt 60

    (d)

    Carbon 14

  5. ___________________% of water is used to produce carbohydrates by the plants.

    (a)

    0.01%

    (b)

    0.001%

    (c)

    0.1%

    (d)

    0.6%.

  6. The length of Bluewhale is_________.

    (a)

    15 m

    (b)

    20 m

    (c)

    25 m

    (d)

    35 m

  7. Identify the gas which prevents the growth of fungus.

    (a)

    Nitrogen

    (b)

    Oxygen

    (c)

    Carbon-di-oxide

    (d)

    Hydrogen

  8. The resistance of a straight conductor is independent of__________

    (a)

    temperature

    (b)

    material

    (c)

    cross sectional area

    (d)

    shape of cross section

  9. The function of phloem  fibres is__________

    (a)

    passage of food

    (b)

    store food

    (c)

    mechanical strength

    (d)

    preparation of food

  10. Curdling of milk protein is done by___________

    (a)

    pepsin

    (b)

    rennin

    (c)

    lipase

    (d)

    maltase

  11. _____________plays an important role in a computer as an inpute device

    (a)

    Keyboard

    (b)

    Scanner

    (c)

    Printer

    (d)

    Mouse

  12. Heavy trucks are fitted with six to eight wheels, As area increases, Pressure will ___________.

    (a)

    decrease

    (b)

    increase

    (c)

    remains the same

  13. 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.

  14. Speed of sound in solids does not depend upon __________.

    (a)

    temperature

    (b)

    density

    (c)

    medium

    (d)

    pressure

  15. Stars, in a constellation form _____________.

    (a)

    No shape

    (b)

    any arbitrary shape

    (c)

    a recognisable shape

    (d)

    a straight line always

  16. Hydrocarbons on burning in the air give CO2 and _____________.

    (a)

    Water and heat

    (b)

    CO and Heat

    (c)

    Water and CO

    (d)

    Water and Sulphur dioxide

  17. Which of the following does not contain natural dyes?

    (a)

    Potato

    (b)

    Beetroot

    (c)

    Carrot

    (d)

    Turmeric

  18. ____________ Present in the lemon juice acts as electrolyte.

    (a)

    Sulphuric acid

    (b)

    Nitric acid

    (c)

    Hydrochloric acid

    (d)

    Citric acid

  19. Which part of plant consisting Nitrogen fixing bacteria?

    (a)

    Roots

    (b)

    Stems

    (c)

    Leaves

    (d)

    All the above

  20. The primary organ infected during tuberculosis is

    (a)

    bone marrow

    (b)

    intestine

    (c)

    spleen

    (d)

    lungs

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