Chhatrapati Shahu Ji Maharaj University 2009 B.Sc Mathematics CHIMESTRY - Question Paper

Time : three Hours] [Maxium marks : 33

Note : The ques. paper has 3 parts. Both ques. of part A and B are compulsory. From part B answers only fifteen ques.. Ansewrs of the ques. should be wrutten in not more than 100 words. From part C attempt only 1 ques..

part - A

1 : Which of the complex [Co(NH3)Cl3] and [Cr(NH3)5Cl]Cl2 will provide precipitate with AgNO3 and why ?

2 : compute 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 ? discuss.

6 : discuss with examples the principle involved in the subsequent 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 every other. Why?

9 : elaborate the characteristics of 'chelate' compounds ? provide examples.

10 : discuss Lux-Flood acids and bases.

11 : elaborate the trans-uranium elements ? discuss.

12 : Distinguish ranging from oxidation number and valency.

13 : What is effective atomic number ? compute effective atomic number of chromium in [Cr(CO)6].

14 : discuss metal-metal bonding provided 2 example.

15 : Write down the principles of Werner's Co-ordination theory.

16 : All the actinides resemble 1 a different very closely. explain.

17 : Write down 4 charcteristic of transitional elements including electronic structure.

18 : discuss amphoteric substances.

19 : Classify ligands on the basis of numbers of donor atoms.

20 : Name the elements which comprises 2nd transition series.

part - C

21 : What is Gravimetric analysis ? How barium can be estimated gravimetrically by it? explain.

22 : discuss f-block elements. Why are the called inner transition elements ?

23 : define method of sepration of Np and Pu from Uranium in detil.

Earning:   Approval pending.