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Maharashtra SSC Class 10 Science and Technology I March 2023 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
    The device used for producing current is called ______.

    Tap an option to check your answer.

  2. Q.1 (A) (ii)1 mark
    If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incidence must be ______.

    Tap an option to check your answer.

  3. Q.1 (A) (iii)1 mark
    The power of a convex lens of focal length 20 cm is ______.

    Tap an option to check your answer.

  4. Q.1 (A) (iv)1 mark
    Good conductor of electricity is ______.

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  5. Q.1 (A) (v)1 mark
    The height of medium earth orbit above the surface of the earth is:

    Tap an option to check your answer.

Q.1 (B)

1 mark each

  1. Q.1 (B) (i)1 mark
    Find the odd man out: Loudspeaker, Microphone, Electric motor, Magnet.
  2. Q.1 (B) (ii)1 mark
    Complete the co-relation: CuI2CuI_2 : Brown :: AgClAgCl : ______.
  3. Q.1 (B) (iii)1 mark
    Match the pair. Group 'A' (Substance): Air. Group 'B' (Refractive index): (a) 1.33, (b) 1.46, (c) 1.0003.
  4. Q.1 (B) (iv)1 mark
    State True or False: "Wavelength of red light is close to 700 nm."
  5. Q.1 (B) (v)1 mark
    Write the name of the small satellite made by a group of students from COEP (College of Engineering, Pune) sent to space through ISRO in 2016.

Q.2 (A)

2 marks each · attempt any 2

  1. Q.2 (A) (i)2 marks
    Give a scientific reason: For electric power transmission, copper or aluminium wire is used.
  2. Q.2 (A) (ii)2 marks
    Give a scientific reason: Lemon or tamarind is used for cleaning copper vessels turned greenish.
  3. Q.2 (A) (iii)2 marks
    Give a scientific reason: Elements belonging to the same group have the same valency.

Q.2 (B)

2 marks each · attempt any 3

  1. Q.2 (B) (i)2 marks
    How do we feel about air in each of the following conditions? (a) Relative humidity is more than 60%. (b) Relative humidity is less than 60%.
  2. Q.2 (B) (ii)2 marks
    Complete the following reaction: C12H22O11→heatC_{12}H_{22}O_{11} \xrightarrow{\text{heat}} ______ + ______.
  3. Q.2 (B) (iii)2 marks
    Distinguish between Mass and Weight.
  4. Q.2 (B) (iv)2 marks
    Complete the following table (write the names of Indian satellites and their launchers):
    Type of SatelliteSatelliteLauncher
    (1) Navigational Satellite____________
    (2) Earth observation Satellite____________
  5. Q.2 (B) (v)2 marks
    Define periods and groups of the modern periodic table.

Q.3

3 marks each · attempt any 5

  1. Q.3 (i)3 marks
    Calculate the escape velocity on the surface of the moon, given the mass and radius of the moon to be 7.34×10227.34 \times 10^{22} kg and 1.74×1061.74 \times 10^{6} m respectively. (Given: G=6.67×10−11 Nm2/kg2G = 6.67 \times 10^{-11}\,Nm^2/kg^2).
  2. An element has its electron configuration as 2, 8, 1. Now answer the following questions:
    Q.3 (ii) (a)3 marks
    What is the atomic number of this element?
  3. Q.3 (ii) (b)
    What is the group of this element?
  4. Q.3 (ii) (c)
    To which period does the element belong?
  5. Q.3 (iii)3 marks
    Observe the figure and name the ray AB, ray CD and ray GH (light passing through a rectangular glass slab).
  6. "NaCl is an ionic compound."
    Q.3 (iv) (a)3 marks
    Why is NaCl an ionic compound?
  7. Q.3 (iv) (b)
    State any two properties of ionic compounds.
  8. Q.3 (v)3 marks
    Identify the physical and chemical changes from the following phenomena: (a) Transformation of ice into water. (b) Ripening of fruit. (c) Milk turned into curd. (d) Evaporation of water. (e) Digestion of food in the stomach. (f) Iron filings get attracted towards the magnet.
  9. Observe the figure titled 'Specific heat capacity of metals' (identical balls of iron, copper and lead, heated to the same temperature, placed on a layer of wax) and answer the following:
    Q.3 (vi) (a)3 marks
    Which element has maximum specific heat capacity? Justify.
  10. Q.3 (vi) (b)
    Which element has minimum specific heat capacity? Justify.
  11. Q.3 (vi) (c)
    Define specific heat of an object.
  12. Q.3 (vii)3 marks
    Identify figures A, B and C and give their uses.
  13. Q.3 (viii)3 marks
    Complete the following flow chart of the classification of hydrocarbons by filling in the blank boxes (Hydrocarbons branch into 'Saturated' and a blank; the saturated branch leads to a blank type, general formula CnH2n+2C_nH_{2n+2} and a blank example; the unsaturated branch leads to 'Alkene' and a blank type, with formulae and examples).

Q.4

5 marks each · attempt any 1

  1. Observe the figure and answer the following questions:
    Q.4 (i) (a)5 marks
    Name the defect of vision represented in the above figure.
  2. Q.4 (i) (b)
    State the reasons for this defect.
  3. Q.4 (i) (c)
    How is it corrected?
  4. Q.4 (i) (d)
    Draw the diagram to show the correction of this defect.
  5. Q.4 (ii)5 marks
    Complete the following table (common name, structural formula and IUPAC name of organic compounds):
    S.N.Common NameStructural FormulaIUPAC Name
    1EthyleneCH2=CH2CH_2 = CH_2______
    2Acetylene______Ethyne
    3Acetic acidCH3−COOHCH_3-COOH______
    4Methyl alcohol______Methanol
    5______CH3−CO−CH3CH_3-CO-CH_3Propan-2-one