BSc Sem VI 2014 2015 2015 Chemistry 1 Question Paper - Mumbai University | munotes

Questions asked in this paper

• (2) Figures to the right indicate full marks

1. Q1 Attempt any three of the following
   • (a) Explain the effect of presence on the rotational spectra. 5
   • (b) Define dipole moment and dipole moment. How does dipole 5 moment study help in between linear and non-linear
   • (c) What is Raman shift? Explain the origin of stokes and anti-stokes lines in 5
   • (d) Define force The vibrational frequency of a diatomic molecule is 5 the force constant of the bond, if the reduced mass of the molecule is 1.2 kg
   • (e) Show that the frequency separation of successive lines in rotational spectrum 5 of'a diatomic molecule is given by 2B, where B is rotational constant
   • (f) Derive expression for P and R branch lines in vibrational -rotational spectra, 5 Attempt any three of the following =
   • (a) With respect to Lithium ion cell, explain cathode, anode and electrolytes 5 With respect to NMR, explain following terms. 5
   • (c) Distinguish between low resolution spectra of ethy!
   • (d) Explain the construction, working and electrode reactio Explain Lindemann's theory of unimolecular reac 5
   • (f) the basis of rate of reactions, classify chemical reactions. sta example for each class
2. Q3 Attempt any seven from the following :
   • (2) The number of modes of vibration for a non-linear are given DY
   • (3) Dipole moment is zero if the same substituents are in a
   • (a) meta (b) para
   • (4) When for a molecule i is said to obey selection rule for
   • (5) The energy required for stretching vibrations that for bending
   • (a) more than (b) less than (c) equal to
   • (6) Zero point the energy molecule possesses at K
   • (7) Solar cells work on the basis of
   • (a) Photoelectric effect
   • (b) Photovoltaic effect
   • (c) Compton effect
   • (8) is as the promising fuel of future because of its
3. Q2 con be vane any three merits and nwo demerits of crystal field theory Explain crystal field splitting in square planar comlexes { Explain the effect of Tr~ on the value of 10 in case of cyano $. Answer any three of the following > ! Explain the principles involved in and processes Write notes on the
   • (c) Write notes on @ Calamine and its uses @ and its uses Discuss the structure and bonding involved in borazine
   • (e) What ere nanomaterials? Discuss the two dimentional nanoparticles, Describe in colloidal route method for preparation ofnanomaterials, 4
4. Q6 Write the most appropriate answer from those given for the following N
   • (1) electron repulsions are in a complexes metal ion than in &
   • (a) more twice the spin mu zero und state term for 8
   • (4) 10 Dq value for tetrahedral complexes
   • (5) The number of microstates in p? configuration is
   • (6) The terms for d' configuration are the same as that
   • (7) Oxygen demanding waste in water leads of dissolved O,
   • (a) depletion (b) increase (c) no change
   • (8) Removal of inoganic salts from the effluents can be done by process
   • (9) 'BOD' is often expressed in of O, required per litre of waste
   • (10) The most used flocculent in effluent treatment is
   • (11) The bond in borazine is
   • (12) The polymers that ha s of only one element in their backbone are

Read from the scan above, so a character or two may differ. The scan is the original.