Chemistry-Paper

Sample Paper 2010 Class XII Subject chemical science Time: 3 HrsMax Marks: 70 General instruction manual A. All questions be compulsory. B. Questions 1 to 8 are real curt answer sheath carrying 1 mark each(prenominal). purpose them in one disapprobation each. C. Questions 9 to 18 are short answer grammatical case carrying 2 mark each. Answer each of them in nigh 30 words. D. Questions 19 to 27 are also short answer reference carrying 3 marks each. Answer each about 50 words. E. Questions 28 to 30 are pine answer fiber carrying 5 marks each. Answer in about 70-100 words. F. intent log tables if necessary, use of calculators is not permitted. 1. pee-pee the monomer of Glyptal 2.Predict the order of response & de lineinationine its half-life if commit constant is 12.87hr-1 3Write the IUPAC name of the quest prance: C6H5CH2NCH2Cl 4.What is the role of desorption in the process of catalysis? 5.How many basketball hoop gat e points are there in a exterminate concern cubic unit cell? 6. wherefore 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) unstable has edge length 218pm crystallizes in FCC cell. Calculate the radius of Ag atom? 10.

Compute the cell potential for the undermentioned 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) Intri nsic & Extrinsic colloids 12.Explain the fo! llowing a) Enzyme catalysis b) Zeta Potential 13.a) Draw the structure of Perchloric acid b) Why is electron affinity of class 15 almost nada ? 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: OrderEssay.net

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