Chemistry – Important Questions Bank for Gujarat (12th Std) HSC Board Exam 2017  

HSC Board Exams are fast approaching and students are getting anxious about how to prepare for their HSC Board Exams. So we had mentioned some HSC Study Tips to help students in Cracking HSC Exams.

After the tremendous success of our last year Important Questions Bank for Gujarat HSC (12th Std) Board Exam 2016, we have also created a list of Most Important Questions Bank for Gujarat (12th Std) HSC Board Exam 2017 which are likely to appear in HSC Board Exams this year.

HSC/12th Std Gujarat Board

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Chemistry Important Question Bank 2017 (English Medium) 

  1. Which four points are taken into consideration in classifying the drugs? Explain.
  2. Explain the theory of collision for a chemical reaction
  3. What are amino acids?
  4. Write a note of PHBV
  5. Write a note on industrial preparation of amine.
  6. Explain crystal field splitting in octahedral crystal.
  7. Explain the theory of collision for a chemical reaction
  8. Explain different methods for purification of colloids in brief
  9. Give only balance equation for reduction of propanone by using: a) hydrazine with strong alkali b) zinc amalgam in acidic medium c) magnesium amalgam and water d) red ‘P’ and HI.
  10. Define Adsorption. Explain freundlich adsorption isotherm with its limitations.
  11. Write the mathematical expression relating the variation of rate constant of a reaction with temperature.
  12. Give the chemical reaction while A is treated with concentrated NaOH and name the reaction.
  13. Explain steady state hypothesis and reaction involving intermediate compounds in equilibrium with reactants
  14. Which reaction method is employed for purification and separation of aldehydes and ketones?
  15. Explain Hell-Volhard Zelinsky reaction and Decarboxylation reaction
  16. What is required to understand Mechanism of chemical reaction. Explain mechanism of reaction involved intermediate compound in equilibrium with reactants.
  17. Derive rate equation for first order reaction with graphical analysis and half reaction formula. Calculate half reaction time in minutes for the first order reaction in which the concentration of reactant decreases from 0.06 to 0.04 mol/lit in 45 minutes.
  18. Explain with example & structure: Tridentate and Hexadentate ligands.
  19. What is meant by Emulsion? State their types. Explain its identification test and preparation.
  20. Explain Crystal field theory
  21. Define cationic and anionic detergents giving their uses.
  22. A sample of polymer is found to be consists of 30% molecules having molecular mass 20,000; 40% molecules having molecular mass 30,000 and remaining molecules possess molecular mass 60,000. Prove that the sample of polymer is synthetic.
  23. An organic compound A has the molecular formula C7H6O. When A is treated with concentrated NaOH followed by acid hydrolysis, it gives two products, B and C. when B is oxidized, it gives A. When A and C are each treated separately with phosphorus pentachloride they give two different organic products D and E then, i) identify A to E ii) Give the chemical reaction when A is treated with concentrated NaOH and name the reaction.
  24. Explain in detail potassium ferrocyanide is diamagnetic while potassium ferricyanide is paramagnetic including shape and hybridization.
  25. Write a note on Vulcanization of rubber
  26. Give basic requirements for complex formation
  27. Write a note on Dialysis
  28. Give difference between Antiseptics and Disinfectants with example.
  29. Explain structure of alpha amino acid with zwitterion formation
  30. Explain the three parts of nucleotide giving necessary diagrams.


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Gujarat class (12th Std) HSC Board Exam 2017 

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