JKBose 12th Class Chemistry 2017 Paper Jammu

The Jammu and Kashmir State Board of School Education formally known as JKSBSE or JK SBOSE) is the official board of school education in the Indian state of Jammu and Kashmir. It is based in Jammu & Srinagar and is an autonomous education body under the administration of the state government of J&K. The board gives affiliation to more than 10K schools across the state and employs more than 22K teachers.

The board is engaged to determine the courses of direction and make syllabi for them, and to choose reading material for the elementary, and secondary schools and for the higher secondary (school degree) school examinations; to lead open examinations and publish the results at the secondary school and higher secondary levels; to concede diplomas or certficates/endorsements to individuals who have passed its examinations; to perceive instructive foundations at the auxiliary school and higher optional levels, and direct reviews of perceived establishments, guaranteeing that required encourages, hardware, and staff are set up, that exclusive the affirmed books and courses are instructed, and that the measures are as per the significant directions; to expel acknowledgment from schools that don’t meet the correct conditions; to administer and control the perceived organizations; and exercise different forces given to it by law.

JKBose 12th Class Chemistry 2017 Paper Jammu (Set B)

Long Answer Type Questions

1). State and explain faraday’s laws of Electolysis.

OR

2). What are electrochemical cells? Describe briefly fuel cell.

3). How is Nitric acid prepared from Ostwald’s process? Give its reaction with Zinc and Iron.

OR

4). What are interhalogen compounds? Why are these named so? Give structure of CIF3 and CIF5.

5). Describe briefly the oxidation state of 3d-transition series elements along with the paramagnetic behaviour of the ions/metals of this series.

OR

6). KMnO4 acts as a strong oxidizing agent in acidic, basic and neutral medium. Give two examples in each case.

7). How can aromatic aldehydes and ketones be prepared by the following reactions?

  • Reimer-Tiemann reaction
  • Fridel-Crafts reaction

OR

8) What are carboxylic acids? Describe the general methods of preparation of carboxylic acids.

Short Answer Type Questions

  • Explain with suitable examples the Dielctric properties of solids.
  • What is Arrhenius equation? Discuss its importance.
  • 40 gm of NaOH are prepared in one deciliter of solution. Calculate mole fraction of NaOH.
  • What are phenols? How do they differ structurally from aromatic alcohols?
  • Describe the main postulates of Vernier’s theory of Co-ordination compounds.
  • Explain the following:

(i) Denaturation of Proteins

(ii) Peptide bond

  • Name the oxy-acids of Phosphorous. Write their structures.
  • Give the reaction of Ethyl amine with:

(i) Grignard’s reagent.

(ii) Carbon disulphoide

Very Short Answer Type Questions

  1. What are Antihistamines? Give examples.
  2. How is Bakelite synthesized?
  3. Why is the time saved when cooking is clone in a pressure cooker?
  4. Distinguish between Physical and Chemical absorption.
  5. Explain Leaching of Bauxite.
  6. Will elevation in boiling point be same for 0.1 M NaCI and 0.1 M Sucrose Solution?
  7. Briefly explain the term Electrophoresis.
  8. What are Haloalkanes? How can haloalkanes be prepared from Alcohols?

JKBose 12th Class Chemistry 2017 Paper Jammu (Set C)

(Long Answer Type Questions)
  1. KMnO4 acts as a strong oxidising agent in acidic, basic and neutral medium. Give two example in each case.
OR
Describe briefly the oxidation, State of 3d-transition series elements along with the paramagnetic behaviour of the ions/metals of this series.
  1. How can aromatic aldehydes and ketones be prepared by the following reactions?
  • Reimer-Tieemann reaction
  • Firdel-Crafts reaction
OR
What are carboxylic acids? Describe the general methods of preparation of carboxylic acids.
  1. State and explain Faraday’s laws of Electrolysis.
OR
What are electrochemical cells? Describe briefly fuel cell.
 
  1. How is Nitric acid prepared from Ostwald’s process? Give its reaction with ZInc and Iron.
OR
What are interhalogen compound? Why are these names so? Give structure of CIF3 and CIF5.
 
(Short Answer Type Questions)
  1. What is Arrhenius equation? Discuss its importance.
  2. 40gm of NaOH are presented in one deciliter of solution. Calculate mole fraction of NaOH.
  3. Explain with suitable example the dielectric properties of solids.
  4. Describe the main Postulates of VerniWhat are interhalogen compound? Why arethese names so? Give structure of CIF3 and CIF5.
(Short Answer Type Questions)
  1. Name the oxy-acids of Phosphorous. Write their structure.
  2. Explain the following:
  • Peptide bond
  • Denaturation of Proteins.
  1. Give the reaction of Ethyl amine with:
  • Grignards reagent.
  • Carbon disulphide
  1. What are Phenols? How do they differ structurally from aromatic alcohols?
(Very Short Answer Type Questions)
  1. How is Bakelite synthesized?
  2. Why is the time saved when cooking is done in a pressure cooker?
  3. What are Antiacids? Give example.
  4. Distinguish between multimolecular and Macromolecular colloids.
  5. Briefly explain Hardy Schulze rule in colloids.
  6. Explain smelting with chemical equations in the extraction of copper from Pyritc ore.
  7. Why are injectable medicines dissolved in saline water before being administered?
  8. Which can be hydrolysed easily Ethylc bromide or Bromobenzinc and why?

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