10th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 2

10th Standard

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Science

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

    Part A

    35 x 1 = 35
  1. One kilogram force equals to

    (a)

    9.8 dyne

    (b)

    9.8 × 104 N

    (c)

    98 × 104 dyne

    (d)

    980 dyne

  2. ______ deals with the bodies which are at rest under the action of forces.

    (a)

    Statics

    (b)

    Kinematics

    (c)

    Dynamics

    (d)

    Mechanics

  3. A force is applied by direct physical contact between two bodies is

    (a)

    Contact force

    (b)

    Non - contact force

    (c)

    Balanced force

    (d)

    Unbalanced force

  4. SI unit of impulse is

    (a)

    Ns

    (b)

    Ns2

    (c)

    kg ms-2

    (d)

    kg m2s-2

  5. Which of the following lens would you prefer to use while reading small letters found in a dictionary?

    (a)

    A convex lens of focal length 5 cm

    (b)

    A concave lens of focal length 5 cm

    (c)

    A convex lens of focal length 10 cm

    (d)

    A concave lens of focal length 10 cm

  6. The velocity of light is _______

    (a)

    3x 10-8 ms-1

    (b)

    3 x 108  ms-1

    (c)

    3 x 108 km s-1

    (d)

    3 x 10-8 km s-1

  7. The image formation by spherical lenses is due to the phenomenon of

    (a)

    reflection

    (b)

    refraction

    (c)

    interference

    (d)

    dispersion

  8. As compare to single lens, compound microscope gives ______ magnification

    (a)

    Smaller

    (b)

    Greater

    (c)

    No

    (d)

    Equal

  9. SI unit of temperature is ______

    (a)

    K

    (b)

    °C

    (c)

    /°C

    (d)

    0F

  10. In a simple circuit, why does the bulb glow when you close the switch?

    (a)

    The switch produces electricity

    (b)

    Closing the switch completes the circuit.

    (c)

    Closing the switch breaks the circuit.

    (d)

    The bulb is getting charged.

  11. The resistance of a conductor directly proportional to

    (a)

     Length

    (b)

    Area

    (c)

    Volt

    (d)

    Current

  12. Which of following relation is correct for voltage, work done and charge?

    (a)

    V=WxQ

    (b)

    W=VxQ

    (c)

    V = Q 1W

    (d)

    W = V / Q

  13. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?

    (a)

    speed

    (b)

    frequency

    (c)

    wavelength

    (d)

    none of these

  14. The velocity of sound is affected by

    (a)

    temperature

    (b)

    density

    (c)

    pressure

    (d)

    all the above

  15. Sound waves do not travel through.

    (a)

    vaccum

    (b)

    solid

    (c)

    liquid

    (d)

    gases

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

    (a)

    Lead oxide

    (b)

    Iron

    (c)

    Lead

    (d)

    Aluminium

  17. Which of the following is used to detect the presence of block in blood vessels.

    (a)

    15P31

    (b)

    15P32

    (c)

    26Fe59

    (d)

    11Na24

  18. Graphite is used as a _________ in nuclear reactors.

    (a)

    moderator

    (b)

    coolant

    (c)

    detector

    (d)

    fuel

  19. Which of the following represents 1 amu?

    (a)

    Mass of a C – 12 atom

    (b)

    Mass of a hydrogen atom

    (c)

    1/12th of the mass of a C – 12 atom

    (d)

    Mass of O – 16 atom

  20. What mass of hydrogen and oxygen will be produced on complete electrolysis of 18 g of water

    (a)

    2 g hydrogen and 32 g oxygen

    (b)

    2 g hydrogen and 16 g oxygen

    (c)

    4 g hydrogen and 32 g oxygen

    (d)

    4 g hydrogen and 14 g oxygen

  21. _____ is a relative periodic property

    (a)

    atomic radii

    (b)

    ionic radii

    (c)

    electron affinity

    (d)

    electronegativity

  22. The acid which makes iron passive is _______________

    (a)

    Conc.HCl

    (b)

    Cone.H2SO4

    (c)

    Cone.HNO3

    (d)

    Cone.HF

  23. The carbon content in wrought iron is _________

    (a)

    0.25 - 2%

    (b)

    0.25 - 17%

    (c)

    2 - 3.5%

    (d)

    3 - 4.5%

  24. A 25% alcohol solution means 

    (a)

    25 ml alcohol in 100 ml of water

    (b)

    25 ml alcohol in 25 ml of water

    (c)

    25 ml alcohol in 75 ml of water

    (d)

    75 ml alcohol in 25 ml of water

  25. Which of the following is not an“element + element → compound” type reaction?

    (a)

    C(s) + O2(g) → CO2(g)

    (b)

    2K(s) + Br2(l) → 2KBr(s)

    (c)

    2CO(g) + O2(g) → 2CO2(g)

    (d)

    4Fe(s) + 3O2(g) → 2Fe2O3(s)

  26. TFM in soaps represents ___________ content in soap

    (a)

    mineral

    (b)

    vitamin

    (c)

    fatty acid

    (d)

    carbohydrate

  27. The segments of leech are known as _____________.

    (a)

    Metameres (somites)

    (b)

    Proglottids

    (c)

    Strobila

    (d)

    All the above

  28. Which of the following process requires energy?

    (a)

    active transport

    (b)

    diffusion

    (c)

    osmosis

    (d)

    all of them

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

    (a)

    thalamus

    (b)

    hypothalamus

    (c)

    corpus callosum

    (d)

    pons

  30. Which organ acts as both exocrine gland as well as endocrine gland

    (a)

    Pancreas

    (b)

    Kidney

    (c)

    Liver

    (d)

    Lungs

  31. Estrogen is secreted by

    (a)

    Anterior pituitary

    (b)

    Primary follicle

    (c)

    Graffian follicle

    (d)

    Graffian follicle

  32. The loss of one or more chromosome in a ploidy is called_____________.

    (a)

    Tetraploidy

    (b)

    Aneuploidy

    (c)

    Euploidy

    (d)

    polyploidy

  33. Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of _______.

    (a)

    chilli

    (b)

    maize

    (c)

    sugarcane

    (d)

    wheat

  34. Which type of cancer affects lymph nodes and spleen?

    (a)

    Carcinoma

    (b)

    Sarcoma

    (c)

    Leukemia

    (d)

    Lymphoma

  35. Common energy source in village is

    (a)

    electricity

    (b)

    coal

    (c)

    biogas

    (d)

    wood and animal dung

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