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Maharashtra SSC Class 10 Science and Technology I March 2022 question paper

Maximum marks 40 · Time 2 hours

Try each question first, then open its model answer. Where the paper offers a choice, both questions are shown with OR between them.

Q.1 (A)

1 mark each

  1. Q.1 (A) (i)1 mark
    Gold plated ornaments is the example of ________.

    Tap an option to check your answer.

  2. Q.1 (A) (ii)1 mark
    The functioning of the satellite launch vehicle is based on ________.

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  3. Q.1 (A) (iii)1 mark
    ________ is one of the combustible components of L.P.G.

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  4. Q.1 (A) (iv)1 mark
    The power of a convex lens of focal length 25 cm is ________.

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  5. Q.1 (A) (v)1 mark
    ________ colour is deviated the least, in the spectrum of white light obtained with a glass prism.

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Q.1 (B)

1 mark each

  1. Q.1 (B) (i)1 mark
    Find the odd one out: INSAT, GSAT, IRS, PSLV.
  2. Q.1 (B) (ii)1 mark
    Complete the correlation: Group 1 : Alkali metals : : ________ : Halogens.
  3. Q.1 (B) (iii)1 mark
    Match the correct pair:
    Column 'A'Column 'B'
    Refractive index of water(a) 1.31
    (b) 1.36
    (c) 1.33
  4. Q.1 (B) (iv)1 mark
    State True or False: An electric motor converts mechanical energy into electrical energy.
  5. Q.1 (B) (v)1 mark
    Write the IUPAC name for the following structural formula: CH3 ⁣− ⁣CH∣OH ⁣− ⁣CH3\mathrm{CH_3\!-\!\underset{\underset{\textstyle OH}{|}}{CH}\!-\!CH_3}

Q.2 (A)

2 marks each · attempt any 2

  1. Q.2 (A) (i)2 marks
    Give a scientific reason: Atomic radius goes on increasing down a group.
  2. Q.2 (A) (ii)2 marks
    Give a scientific reason: Simple microscope is used for watch repairs.
  3. Q.2 (A) (iii)2 marks
    Give a scientific reason: It is recommended to use airtight container for storing oil for long time.

Q.2 (B)

2 marks each · attempt any 3

  1. Q.2 (B) (i)2 marks
    An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of 'g' on the planet?
  2. Q.2 (B) (ii)2 marks
    Draw a neat labelled diagram of Hope's Apparatus.
  3. Q.2 (B) (iii)2 marks
    State the Laws of Refraction.
  4. Answer the following:
    Q.2 (B) (iv) (a)2 marks
    Name the main ore of aluminium.
  5. Q.2 (B) (iv) (b)
    What impurities are present in aluminium ore?
  6. Q.2 (B) (v)2 marks
    Observe the given figure of Fleming's Left Hand Rule (the thumb shows 'Force of the conductor') and write the labels of 'A' and 'B'.

Q.3

3 marks each · attempt any 5

  1. Q.3 (i)3 marks
    Write the demerits of Mendeleev's periodic table.
  2. Q.3 (ii)3 marks
    State the laws related to the given diagram (a planet moving in an elliptical orbit around the Sun, sweeping equal-area sectors 1, 2 and 3).
  3. Identify the type of chemical reaction given below:
    Q.3 (iii) (a)3 marks
    CuSO4+Fe→FeSO4+Cu\mathrm{CuSO_4 + Fe \rightarrow FeSO_4 + Cu}
  4. Q.3 (iii) (b)
    2Mg+O2→2MgO\mathrm{2Mg + O_2 \rightarrow 2MgO}
  5. Q.3 (iii) (c)
    2KClO3→2KCl+3O2↑\mathrm{2KClO_3 \rightarrow 2KCl + 3O_2 \uparrow}
  6. Q.3 (iv)3 marks
    If the speed of light in a medium is 1.5×108 m/s1.5 \times 10^{8}\ \mathrm{m/s}, what is the absolute refractive index of the medium? (Speed of light in vacuum =3×108 m/s= 3 \times 10^{8}\ \mathrm{m/s}.)
  7. Read the following paragraph and answer the questions based on it: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box, then no energy can flow from inside the box or come into the box.
    Q.3 (v) (a)3 marks
    Heat is transferred from where to where?
  8. Q.3 (v) (b)
    Which principle do we learn about from this process?
  9. Q.3 (v) (c)
    How will you state the principle briefly?
  10. Q.3 (vi)3 marks
    Complete the following table for a convex lens:
    Sr. No.Position of the objectPosition of the imageNature of the image
    1.Beyond 2F12F_1
    2.At infinity
    3.Real, inverted and enlarged
  11. Explain the following terms:
    Q.3 (vii) (a)3 marks
    Metallurgy
  12. Q.3 (vii) (b)
    Ores
  13. Q.3 (vii) (c)
    Gangue.
  14. Q.3 (viii)3 marks
    State the importance of Space Mission.

Q.4

5 marks each · attempt any 1

  1. Observe the following diagram (a rectangular current-carrying coil ABCD placed between the poles N and S of a magnet, with conducting rings, carbon brushes, axle and a battery) and answer the questions given below:
    Q.4 (i) (a)5 marks
    Identify the above diagram.
  2. Q.4 (i) (b)
    Write the principle on which the above appliance works.
  3. Q.4 (i) (c)
    Write the working of the above appliance.
  4. Q.4 (i) (d)
    Write the use of the above appliance.
  5. Answer the following (alternative to Q.4(i)):
    Q.4 (ii) (a)5 marks
    Identify saturated and unsaturated hydrocarbon from the given structural formula: (1) H3C ⁣− ⁣CH3\mathrm{H_3C\!-\!CH_3} (each carbon bonded to hydrogens by single bonds - ethane) (2) H2C ⁣= ⁣CH2\mathrm{H_2C\!=\!CH_2} (a carbon-carbon double bond - ethene)
  6. Q.4 (ii) (b)
    Draw electron dot structure for (1) ethane C2H6\mathrm{C_2H_6} and (2) ethene C2H4\mathrm{C_2H_4}.
  7. Q.4 (ii) (c)
    Define Homologous series.