Sample paper of chemistry for class 12 board exam

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Subject - Chemistry Class - XII
Time: 3 Hrs. M.M. : 70
General Instructions:
a) All the questions are Compulsory
b) Question Numbers I to 8 are very short answer questions and carry 1 mark each
c) Question Numbers 9 to 18 are short answer questions and carry 2 marks each. d) Question Numbers 19 to 27 are also short answer questions and carry 3 marks each.e) Question Numbers 28 to 30 are long questions and carry 5 ,marks each.f) Use log tables if necessary. use of calculators is not allowed.

Q.1 Give the IUPAC name of the following organic compound.

 
Q.2 What is peptization ? 
Q.3 Write the balanced equation:

Q 4 Why is chioroacetic acid stronger than acetic acid?
Q 5 Why is Frenkel defect found in AgCI?
  Q.6 What is the Van’t Hoff factor for a compound which undergoes tetramerization in an
organic solvent?
Q.7 Suggest a condition under which magnesium could reduce alumina.
Q.8 Predict the shape of CIF3 on the basis of VSEPR theory.
Q. Ethylene glycol (molar mass =62 gmoV) is a common automobile antifreeze. Calculate the freezing point of a solution containing 12.4g of this substance in 100g of water. Would it be advisable to keep thin substance in the car radiator during summer.
Q.10
 
i) Predict the order of the reaction.
ii) Derive the expression for the time required for the completion of the reaction.
Q.11 Write the nerst equation and calculate e.m.f of the following cell at 298k

Q.12 What is the difference between a nucleoside and a nucleotide?
Q.13 State the difference between the following;
I) A globular protein and fibrous protein
ii) Primary and secondary structure of a proteins.

UPSC SCRA exam

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UPSC SCRA 2013 notification has been released. The examination for SCRA (Special Class Railway Apprentices) will be held on 20^th January 2013 at the various centers across the country.
Special Class Railway Apprentices (SCRA) of mechanical department of Indian Railways is highly coveted among the candidates who wish to join the Indian Railway as a mechanical engineer.
Educational Qualification
Minimum educational qualification for the SCAR Examination as per notification is intermediate (10+2) or equivalent examination.
Age Limit:
As SCRA 2013 notification reads that the minimum age is 17 years but the candidates must not have attained the age of 21 years. The age relaxation is applicable according to the norms.

New Examination Pattern for Admissions to IITs/NITs/IIITs

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Introduction and Scheme of Examination

It has been decided to hold a Joint Entrance Examination from the year 2013 for admission to the undergraduate programmes in Engineering in two parts, JEE-MAIN and JEE-ADVANCED. Only the top 150000 candidates (including all categories) based on performance in JEE MAIN will qualify to appear in the JEE ADVANCED examination. Admissions to IITs will be based only on category-wise All India Rank (AIR) in JEE ADVANCED, subject to condition that such candidates are in the top 20 percentile categories. Admission to NITs will be based on 40 % weightage for performance in Class XII board marks (normalized) and the remainder 60 % weightage would be given to performance in JEE Main and a combined All India Rank (AIR) would be decided accordingly. The policy could also be adopted by other Centrally Funded Technical Institutions (CFTIs) and participating Institutions. In case any State opts to admit students in the engineering Colleges affiliated to state Universities where States require separate merit list to be provided based on relative weightages adopted by the states, then the merit list shall be prepared with such relative weightages as may be indicated by States.