10th Standard Science English Medium Free Online Test Book Back 1 Mark Questions with Answer Key Part - 3

10th Standard

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Science

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

    Part A

    20 x 1 = 20
  1. In which of the following sport the turning of effect of force used

    (a)

    swimming

    (b)

    tennis

    (c)

    cycling

    (d)

    hockey

  2. In a myopic eye, the image of the object is formed

    (a)

    behind the retina

    (b)

    on the retina

    (c)

    in front of the retina

    (d)

    on the blind spot

  3. Temperature is the average ______ of the molecules of a substance

    (a)

    difference in K.E and P.E

    (b)

    sum of P.E and K.E

    (c)

    difference in T.E and P.E

    (d)

    difference in K.E and T.E

  4. 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.

  5. 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

  6. ____________ isotope is used for the treatment of cancer.

    (a)

    Radio Iodine

    (b)

    Radio Cobalt

    (c)

    Radio Carbon

    (d)

    Radio Nickel

  7. Mass of 1 mole of Nitrogen atom is

    (a)

    28 amu

    (b)

    14 amu

    (c)

    28 g

    (d)

    14 g

  8. _____ group contains the member of halogen family.

    (a)

    17th

    (b)

    15th

    (c)

    18th

    (d)

    16th

  9. The number of components in a binary solution is _____________

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    5

  10. A single displacement reaction is represented by X(s) + 2HCl(aq) → XCl2(aq) + H2(g). Which of the following(s) could be X. (i) Zn (ii) Ag (iii) Cu (iv) Mg. Choose the best pair.

    (a)

    i and ii

    (b)

    ii and iii

    (c)

    iii and iv

    (d)

    i and iv

  11. C2H5OH + 3O2 → 2CO2 + 3H2O is a

    (a)

    Reduction of ethanol

    (b)

    Combustion of ethanol

    (c)

    Oxidation of ethanoic acid

    (d)

    Oxidation of ethanal

  12. Kreb’s cycle takes place in

    (a)

    chloroplast

    (b)

    mitochondrial matrix

    (c)

    stomata

    (d)

    inner mitochondrial membrane

  13. The body of leech has

    (a)

    23 segments

    (b)

    23 segments

    (c)

    38 segments

    (d)

    30 segments

  14. The wall of human heart is made of

    (a)

    Endocardium

    (b)

    Epicardium

    (c)

    Myocardium

    (d)

    All of the above

  15. The outer most of the three cranial meninges is

    (a)

    arachnoid membrane

    (b)

    piamater

    (c)

    duramater

    (d)

    myelin sheath

  16. Avena coleoptile test was conducted by

    (a)

    Darwin

    (b)

    N. Smit

    (c)

    Paal

    (d)

    F.W. Went

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

    (a)

    5 carbon sugar

    (b)

    Phosphate

    (c)

    Nitrogenous bases

    (d)

    Sugar phosphate

  18. Which of the following is used to produce products useful to humans by biotechnology techniques?

    (a)

    enzyme from organism

    (b)

    live organism

    (c)

    vitamins

    (d)

    both (a) and (b)

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

    (a)

    Carcinoma

    (b)

    Sarcoma

    (c)

    Leukemia

    (d)

    Lymphoma

  20. Green house effect refers to

    (a)

    cooling of earth

    (b)

    trapping of UV rays

    (c)

    cultivation of plants

    (d)

    warming of earth

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