Chemistry-Paper

Sample Paper 2010
Class XII
Subject Chemistry
Time: 3 HrsMax Marks: 70
General Instructions
A. All questions are compulsory.
B. Questions 1 to 8 are very curt answer sheath carrying 1 mark each(prenominal). Answer them in one disapprobation each.
C. Questions 9 to 18 are short answer grammatical case carrying 2 marks each. Answer each of them in nigh 30 words.
D. Questions 19 to 27 are also short answer type carrying 3 marks each. Answer each about 50 words.
E. Questions 28 to 30 are pine answer type carrying 5 marks each. Answer in about 70-100 words.
F. Use log tables if necessary, use of calculators is not permitted.

1. pee-pee the monomer of Glyptal
2.Predict the order of reaction & de terminationine its half-life if commit constant is 12.87hr-1
3Write the IUPAC name of the following mix: C6H5CH2NCH2Cl
4.What is the role of desorption in the process of catalysis?
5.How many wicket gate points are there in a end concern cubic unit cell?
6.Why do phenols lavatory be easily nitrated as compared to Benzene?
7. inform the term OLIGOSACCHARIDES with an example ?
8.How is Zirconium purified ?
9.a) What is the effect of temperature on conductance of semiconductors & why ?
b) fluid has edge length 218pm crystallizes in FCC cell. Calculate the radius of Ag atom?
10.



Compute the cell potential for the following cell
Ni(s) | Ni2+(aq) (0.01M) || Ni2+(aq) (0.1M) | Ni(s) period E0Ni2+(aq)/Ni(s) = - 0.25V at 250C
11.Explain one main difference amidst the following pairs of each with suitable examples
a) Physisorption & Chemisorption
b) Intrinsic & Extrinsic colloids
12.Explain the following
a) Enzyme catalysis
b) Zeta Potential
13.a) Draw the structure of Perchloric acid
b) Why is electron affinity of class 15 almost zero ?
or
a) Draw the structure of Pyrosulphuric acid
b) SF6 is an lazy non-toxic gas, why?
14.What happens when
a) Conc. Sulphuric acid is added to calcium fluoride
b) SO3 is passed through...If you want to ram a full essay, order it on our website: Ordercustompaper.com



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