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Posted Date: 01 Aug 2009 Posted By:: Shaeed khan Member Level: Silver Points: 5 (₹ 1)
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2009 Chhatrapati Shahu Ji Maharaj University B.Sc. Mathematics CHIMESTRY Question paper
Time : 3 Hours] [Maxium marks : 33
Note : The question paper has three sections. Both question of section A and B are compulsory. From section B answers only fifteen question. Ansewrs of the question should be wrutten in not more than 100 words. From section C attempt only one Question.
Section - A
1 : Which of the complex [Co(NH3)Cl3] and [Cr(NH3)5Cl]Cl2 will give precipitate with AgNO3 and why ?
2 : Calculate effective atomic number of corresponding central metal in complexes :
(a) [Pt(NH3)6]4+
(b) [Cr(CO)6]
3 : How redox potential data is usefull in extraction of elements ?
4 : Write down the nature of products when silver chloride is treated with barium nitrate in liquid ammonia.
5 : What lanthanide contraction ? Explain.
6 : Explain with examples the principle involved in the following metallurgical operations :
(a) Gravity seperation
(b) Electron-refining
7 : Name the possible source of precipitation during gravimetric analysis. How these can be eliminated ?
8 : 4d and 5d transitional metals much resemble with each other. Why?
9 : What are the characteristics of 'chelate' compounds ? Give examples.
10 : Explain Lux-Flood acids and bases.
11 : What are the trans-uranium elements ? Explain.
12 : Distinguish between oxidation number and valency.
13 : What is effective atomic number ? Calculate effective atomic number of chromium in [Cr(CO)6].
14 : Explain metal-metal bonding given two example.
15 : Write down the principles of Werner's Co-ordination theory.
16 : All the actinides resemble one another very closely. Discuss.
17 : Write down four charcteristic of transitional elements including electronic structure.
18 : Explain amphoteric substances.
19 : Classify ligands on the basis of numbers of donor atoms.
20 : Name the elements which comprises second transition series.
SECTION - C
21 : What is Gravimetric analysis ? How barium can be estimated gravimetrically by it? Discuss.
22 : Explain f-block elements. Why are the called inner transition elements ?
23 : Describe method of sepration of Np and Pu from Uranium in detil.
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