chemistry Honours(H1) 2st sem 2016 previous year BSc question paper | Assam University

2016/SEM/EVEN/cHMH-201/290

TDC Even Semester Exam., 2016

CHEMISTRY

Honours

(2nd Semester)

Paper No. : CHMH—201

(Inorganic Chemistry)

Full Marks: 35

Pass Mcfrks: 12

Time : 2 hours

The figures in the margin indicate full marks for the questions

Answer five questions, selecting one from each Unit

UNIT-I

1. (a) Write three-dimensional Schrödinger’s equation explaining the terms involved in the wave equation. What are the significances of Ni and N’ 2+2=4
(b) (i) Arrange the following in the increasing order of size : Mg2, F, Na, 2_ AJ3

(ii) Justify with suitable example that van der Waals’ radius is greater than covalent radius.

2. (a) With the help of Slater’s rule, explain why in case of potassium, the valence electron enters into 4s but not in 3d subshell,
(b) Define diagonal relationship considering the example of Li and Mg.
(c) (i) Define inertpair effect.
(ii) What are eigenvalue and eigenf unction?

UNIT—Il

3. (a) Balance the basic ion electron equation for KMnO4 as an oxidizing agent in alkaline medium.
(b) How much K2Cr2O7 is required for preparing 2 L N/ 10 solution for titration in acidic medium?
(c) Write the chemistry of charcoal reduction test in qualitative analysis.

4. (a) What are interfering radicals? Why are they so called? Explain with example.
(b) Write the chemistry of ‘chromyl chloride test’, 2
(c) Show that the equivalent weight of KMnO4 is 1/5th of its molecular weight in acidic medium. 2

UNIT—III

5. (a) Distinguish between chemical reaction and nuclear reaction. 2
(b) How much eneri is evolved when I g of uranium undergoes nuclear fission? 3
(c) Write a short note on artificial transmusion with suitable example. 2

6. (a)How can nuclear stability be explained with the help of n/p ratio? 2
(b) Briefly explain the process of measurement of radioactivity. 3
(c) Give one example of each type of nuclear reactions. 2

UNIT—IV

7. (a) the structures of diamond and graphite with special reference to their electrical conductivities. 2+2=4
(b) What are lanthanides? Why are they so called?
(c) Discuss the application of borax in qualitative analysis.

8. (a) What are ionic carbides? How are they further classified?
(b) Discuss the structure of fullerene (C60).
(c) Draw and explain the structure of H3B03.

UNIT-V

9. (a) What are malachite and Rinmann’s green? How are they m an ufacture d? 2±2’
(b) What are thinner and filler? Give examples.

10. (a) How does chrome yellow differ from chrome red? Explain.
(b) What are paints? Mention their essential requirements. 1+2.
(c) What do you mean by drying of oils?

J16 550/1028 2016/SEM/EVEN/CHMH-2u]/s