10th Standard Science English Medium Free Online Test Book Back 1 Mark Questions with Answer Key Part - 1

10th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. The unit of ‘g’ is m s-2. It can be also expressed as

    (a)

    cm s-1

    (b)

    N kg-1

    (c)

    N m2 kg-1

    (d)

    cm2 s-2

  2. The eye defect ‘presbyopia’ can be corrected by

    (a)

    convex lens

    (b)

    concave lens

    (c)

    convex mirror

    (d)

    Bi focal lenses

  3. If a substance is heated or cooled, the linear expansion occurs along the axis of

    (a)

    X or –X

    (b)

    Y or –Y

    (c)

    both (a) and (b)

    (d)

    (a) or (b)

  4. If a sound wave travels with a frequency of 1.25 x 104 Hz 344 ms-1, the wavelength will be 

    (a)

    27.52 m

    (b)

    275.2 m

    (c)

    0.02752 m

    (d)

    2.752 m

  5. _____________ aprons are used to protect us from gamma radiations

    (a)

    Lead oxide

    (b)

    Iron

    (c)

    Lead

    (d)

    Aluminium

  6. Mass of 1 mole of Nitrogen atom is

    (a)

    28 amu

    (b)

    14 amu

    (c)

    28 g

    (d)

    14 g

  7. In the alumino thermic process the role of Al is _____.

    (a)

    oxidizing agent

    (b)

    reducing agent

    (c)

    hydrogenating agent

    (d)

    sulphurising agent

  8. Deliquescence is due to __________

    (a)

    Strong affinity to water

    (b)

    Less affinity to water

    (c)

    Strong hatred to water

    (d)

    Inertness to water

  9. Powdered CaCO3 reacts more rapidly than flaky CaCO3 because of

    (a)

    large surface area

    (b)

    high pressure

    (c)

    high concentration

    (d)

    high temperature

  10. The endarch condition is the characteristic feature of

    (a)

    root

    (b)

    stem

    (c)

    leaves

    (d)

    flower

  11. Mammals are ______________ animals.

    (a)

    Cold blooded

    (b)

    Warm blooded

    (c)

    Poikilothermic

    (d)

    All the above

  12. A patient with blood group O was injured in an accident and has blood loss. Which blood group the doctor should effectively use for transfusion in this condition?

    (a)

    O group

    (b)

    AB group

    (c)

    A or B group

    (d)

    all blood group

  13. Which nervous band connects the two cerebral hemispheres of brain?

    (a)

    thalamus

    (b)

    hypothalamus

    (c)

    corpus callosum

    (d)

    pons

  14. Identify the exocrine gland

    (a)

    Pituitary gland

    (b)

    Adrenal gland

    (c)

    Salivary gland

    (d)

    Thyroid gland

  15. What is true of gametes?

    (a)

    They are diploid

    (b)

    They give rise to gonads

    (c)

    They produce hormones

    (d)

    They are formed from gonads

  16. The _____________ units form the backbone of the DNA.

    (a)

    5 carbon sugar

    (b)

    Phosphate

    (c)

    Nitrogenous bases

    (d)

    Sugar phosphate

  17. The term Ethnobotany was coined by

    (a)

    Khorana

    (b)

    J.W. Harsbberger

    (c)

    Ronald Ross

    (d)

    Hugo de Vries

  18. Soil erosion is more where there is

    (a)

    no rain fall

    (b)

    low rainfal

    (c)

    rain fall is high

    (d)

    none of these

  19. A cheap, conventional, commercial and inexhaustible source of energy is

    (a)

    hydropower

    (b)

    solar energy

    (c)

    wind energy

    (d)

    thermal energy

  20. Where you will create category of blocks?

    (a)

    Block palette

    (b)

    Block menu

    (c)

    Script area

    (d)

    sprite

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