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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.
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.
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.
