10th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Nine

10th Standard

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Science

Time : 00:35:00 Hrs
Total Marks : 35

    Part A

    35 x 1 = 35
  1. Presbyopia is corrected by

    (a)

    Concave

    (b)

    Focal

    (c)

    Convex

    (d)

    Cylindrical

  2. An inverted image of the object is formed in _____

    (a)

    Simple microscope

    (b)

    Compound microscope

    (c)

    Astronomical microscope

    (d)

    Both b & c

  3. Gas laws state the relationship between _____ properties of gas.

    (a)

    pressure

    (b)

    volume

    (c)

    Temperature & mass

    (d)

    all the above

  4. If resistance decreases, then current will

    (a)

    increase

    (b)

    double

    (c)

    decrease

    (d)

    constant

  5. A bird sitting on an uninsulated wire carrying a current feels quite safe because

    (a)

    the bird is non-conductor of electricity

    (b)

    resistance of the bird is very large

    (c)

    there is a large potential difference between bird and wire

    (d)

    there is no potential difference between bird and wire

  6. Sound energy passing per second through a unit area held perpendicular is called.

    (a)

    intensity

    (b)

    frequency

    (c)

    amplitude

    (d)

    quality

  7. The coolant used in fast breeder reactor is

    (a)

    ordinary water

    (b)

    heavy water

    (c)

    liquid sodium

    (d)

    boron carbide

  8. Atomicity of Chlorine and Neon is

    (a)

    Mono atomic and mono atomic

    (b)

    Mono atomic and diatomic

    (c)

    Diatomic and diatomic

    (d)

    Diatomic and mono atomic

  9. Atomicity of Sulphur is

    (a)

    1

    (b)

    2

    (c)

    4

    (d)

    8

  10. Pottassium belongs to ________ period

    (a)

    First

    (b)

    Second

    (c)

    Third

    (d)

    Fourth

  11. Electronegativity values are based on ______________

    (a)

    bond energy

    (b)

    electron affinity

    (c)

    ionisation energy

    (d)

    all the above

  12. The chief ore of copper is ________

    (a)

    Copper pyrites

    (b)

    Copper glance

    (c)

    Cyprite

    (d)

    Rupy copper

  13. Hygroscopic substances are used as __________ agents.

    (a)

    oxidizing

    (b)

    reducing

    (c)

    decarbocyleting

    (d)

    drying

  14. Non-aqueous solvent is ____________

    (a)

    benzene

    (b)

    ether

    (c)

    CS2

    (d)

    All the above

  15. The product formed when calcium oxide reacts with water is

    (a)

    Slaked lime

    (b)

    Carbon dioxide

    (c)

    Calcium oxide

    (d)

    Oxygen gas

  16. Formation of ammonia from nitrogen and hydrogen is an example of __________ reaction.

    (a)

    Thermal decomposition

    (b)

    Combination

    (c)

    Precipitation

    (d)

    Displacement

  17. The value of ionic product of water at 25°C is ____________

    (a)

    1.00 x 1014

    (b)

    1.00 x 10-14

    (c)

    1.00 X 104

    (d)

    1.00 X 10-4

  18. Cyclobutane is an example of ______________ compounds.

    (a)

    a cyclic

    (b)

    cyclic

    (c)

    aromatic

    (d)

    alicyelic

  19. Alcohols + Acids  Esters. This reaction is ___________

    (a)

    Ester hydrolysis

    (b)

    Esterification

    (c)

    Dehydrogenation

    (d)

    Oxidation

  20. Which of the following is formed when soap water acts on clothes to remove dirt or grease?

    (a)

    acetic acid

    (b)

    Micelle

    (c)

    Ethyl alcohol

    (d)

    all the above

  21. The urinogenital canal of female rabbit is formed by union of_________

    (a)

    urethra and vagina

    (b)

    urinary bladder and urethra

    (c)

    cowper's gland and urinary bladder

    (d)

    urinary bladder and vagina

  22. ___________is the main circulatory medium in the human body.

    (a)

    Blood

    (b)

    Water

    (c)

    Lymph

    (d)

    Plasma

  23. A human brain is formed of ______ main parts.

    (a)

    three

    (b)

    four

    (c)

    two

    (d)

    six

  24. Auxins were identified by ______

    (a)

    Darwin

    (b)

    Kogi

    (c)

    Went

    (d)

    Funk

  25. _____ promotes the development and enlargement of all tissues of the body.

    (a)

    GH

    (b)

    TSH

    (c)

    GTH

    (d)

    ACTH

  26. The deficiency of insulin causes ______

    (a)

    diabetes mellitus

    (b)

    tetany

    (c)

    thyroid dysfunction

    (d)

    cretinism

  27. _________is a basal part of the Ovule.

    (a)

    Chalaza

    (b)

    Micropyle

    (c)

    Nucellus

    (d)

    Funiculus

  28. Lack of menstruation generally indicates________

    (a)

    Pregnancy

    (b)

    Anemia

    (c)

    Amenorrhea

    (d)

    Over weight

  29. In human,each cell normally consists _________of chromosomes.

    (a)

    23 pairs

    (b)

    22 pairs

    (c)

    20 pairs

    (d)

    12 pairs

  30. Minerals like __________ slowly penetrate in and replace the original organic tissue and forms a rock like fossil.

    (a)

    calcium

    (b)

    sodium

    (c)

    magnesium

    (d)

    silica

  31. Blood dotting factors produced by biotechnology helps patients suffering from__________.

    (a)

    haemophilia

    (b)

    homeostasis

    (c)

    cerebral palsy

    (d)

    CHD

  32. ____________ is not a method of treatment for cancer.

    (a)

    Surgery

    (b)

    Immunotherapy

    (c)

    Vasectomy

    (d)

    Radiation therapy

  33. There are______ biosphere reserves in India.

    (a)

    5

    (b)

    13

    (c)

    15

    (d)

    18

  34. How many parts are there in the Scratch Editor?

    (a)

    4

    (b)

    2

    (c)

    3

    (d)

    1

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