Important Question Bank of Chemistry for Maharashtra HSC Board Exam 2020

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Chemistry Important Question Bank 2020

  1. State Henry’s Law.
  2. State Faraday’s first law of electrolysis.
  3. Explain Sidgwick’s electronic theory with suitable example
  4. State: Second law of thermodynamics in terms of entropy.
  5. State third law of thermodynamics. Write applications of standard molar entropy.
  6. How ligands are classified? Explain with suitable examples.
  7. State and explain Hess’s law of constant heat summation
  8. How is carbolic acid prepared from the following compounds:
    a. Aniline
    b. Chlorobenzene and steam at 698 K?
  9. Draw structure of DDT. Write its environmental effects.
    Mention ‘two’ physical properties of carbolic acid.
  10. What is metamerism? Write the structure and IUPAC name of methyl-n-propylether. What is the action of hot HI on it?
  11. Distinguish between crystalline solids and amorphous solids
  12. Explain magnetic separation process of ores with the help of a neat, labelled diagram.
  13. Write a note on self oxidation-reduction reaction of aldehyde with suitable example.
  14. . Face centred cubic crystal lattice of copper has density of 8.966 g. cm-3. Calculate the volume of the unit cell. Given: Molar mass of copper is 63.5 g. mol–1 and Avogadro number NA is 6.022 × 1023 mol–1.
  15. How will you prepare ethanol, propan-2-ol and 2-methylpropan-2-ol from Grignard’s reagent? Define optical activity. Explain optical activity of lactic acid
  16. How is phosphine prepared using the following reagents?
    1.  HCl
    2. H2SO4
    3. Caustic soda
  17. Write the names and chemical formulae of any ‘two’ minerals of aluminium
  18. What is the action of the following reagents on aniline?
    1.  Bromine water
    2.  Acetic anhydride
    3.  Hot and conc. sulphuric acid
  19. Derive the relation between ∆G° and equilibrium constant (K) for the reaction, aA + bB cC + dD.
  20. What are lanthanoids? What is the position of actinoids in periodic table?
  21. Derive an expression for maximum work in isothermal reversible expansion of two moles of an ideal gas.
  22. What is the action of the following reagents on ammonia:
    1.  Nessler’s reagent
    2.  Sodium metal
  23. How is nitric acid prepared by Ostwald’s process
  24. Write the derivation of van’t Hoff general solution equation.
  25. Write the molecular and structural formula of BHA and BHT.
  26. Calculate the standard enthalpy of combustion of CH3COOH(l) from the following data:
    1. ΔfHo (CO2) = – 393.3 kJ mol–1
    2. ΔfHo (H2O) = – 285.8 kJ mol–1
    3. ΔfHo (CH3COOH) = – 483.2 kJ mol–1
  27. What are vitamins? Name any two diseases caused by deficiency of vitamin A. Write the structures of:
    1.  nucleoside
    2. nucleotide
    3. How are 1-nitropropane, 2-nitropropane and 2-methyl-2-nitropropane are distinguished from each other using nitrous acid?
  28. What are carbohydrates? Write the reaction for the preparation of nylon-6
  29. What are Ellingham diagrams? Write any two features of it.
  30. Write the reactions involved in the preparation of: (a.) Teflon (b.) Orlon (c.) PV.

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Maharashtra HSC Board Exam – Important Question Bank 2020

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