Solapur University
B.Sc. – I (Semester – I) (Biotechnology) (Old) Examination, 2015
FUNDAMENTALS OF CHEMISTRY AND BIOPHYSICS
Chemical Science (Paper – I)
Day and Date : Wednesday, 15-4-2015 Max. Marks : 50
Time : 11.00 a.m. to 1.00 p.m.
N. B. : 1) All questions are compulsory.
2) Figures to the right indicate full marks.
3) Use of calculators and log table is allowed.
4) Draw neat diagram wherever necessary.
1. Select the most correct alternative amongst those given below and write complete
sentence in your answer book : 10
i) The two solutions with same osmatic pressure are called _________ solutions.
a) isotonic b) hypotonic c) hypertonic d) isomeric
ii) Colligative property is _____________ proportional to the molecular mass.
a) inversely b) directly c) not d) non-linearly
iii) Which of the following is not state function ?
a) qp b) q c) enthalpy d) entropy
iv) ____________ is the relationship between ΔG° of a reaction and its equilibrium
constant.
a) InK
RT − ΔG° = b) InK
RT ΔG° = c) 1
G
RTInK = − Δ ° d) ΔG° = RTInK
v) The number of electrons that have a total charge of 965 coulombs is _______
a) 6.022 × 1023 b) 6.022 × 1022 c) 6.022 × 1021 d) 3.011 × 1023
vi) The valve of constant in Nerst equation n
const. E = E° − In Q at 25°C is
_________
a) 0.0592 mV b) 0.0592 V c) 25.7 mV d) 0.0296 V
vii) The SI unit of molar conductivity is ____________
a) S cm2 mol–1 b) S dm3 mol–1 c) S m2 d) S m2 mol–1
SLR-M – 11
viii) Molecularity of an elementary reaction ____________
a) may be zero b) is always integral
c) may be semi-integral d) may be fractional
ix) Ethylene molecule has ____________ geometry.
a) square planar b) tetrahedral c) trigonal planar d) octahedral
x) _______________ is the unit of rate constant for 1st order reaction.
a) min–2 b) S c) S–1 d) min.
2. Attempt any five of the following : 10
a) Define rate constant and give its unit for second order reaction.
b) Define dipole moment.
c) Distinguish between homogeneous and heterogeneous catalysis.
d) What is osmatic pressure ? Explain it in short.
e) What is pseudo first order reaction ? Give one example.
f) Define pH and pOH.
3. A) Attempt any two of the following : 6
a) Write ionization products of NaCl, KNO3, CaCl2.
b) What are colligative properties ? Explain with example.
c) Write any three characteristics of ionic solids.
B) Explain the formation of methane molecule on the basis of VBT. 4
4. Attempt any two of the following : 10
i) Explain common ion effect with example.
ii) Write in detail formation of ethyne molecule on the basis of VBT.
iii) What is catalysis ? Explain its types with examples.
5. Attempt any two of the following : 10
i) How will you establish relation between specific conductance and molar
conductance ?
ii) Write any three statements of 1st law of thermodynamics, explain them in
short.
iii) The half life of 1st order reaction is 6.0 hrs, how long it will take to complete
75% of the reactant to products.
_____________________
B.Sc. – I (Semester – I) (Biotechnology) (Old) Examination, 2015
FUNDAMENTALS OF CHEMISTRY AND BIOPHYSICS
Chemical Science (Paper – I)
Day and Date : Wednesday, 15-4-2015 Max. Marks : 50
Time : 11.00 a.m. to 1.00 p.m.
N. B. : 1) All questions are compulsory.
2) Figures to the right indicate full marks.
3) Use of calculators and log table is allowed.
4) Draw neat diagram wherever necessary.
1. Select the most correct alternative amongst those given below and write complete
sentence in your answer book : 10
i) The two solutions with same osmatic pressure are called _________ solutions.
a) isotonic b) hypotonic c) hypertonic d) isomeric
ii) Colligative property is _____________ proportional to the molecular mass.
a) inversely b) directly c) not d) non-linearly
iii) Which of the following is not state function ?
a) qp b) q c) enthalpy d) entropy
iv) ____________ is the relationship between ΔG° of a reaction and its equilibrium
constant.
a) InK
RT − ΔG° = b) InK
RT ΔG° = c) 1
G
RTInK = − Δ ° d) ΔG° = RTInK
v) The number of electrons that have a total charge of 965 coulombs is _______
a) 6.022 × 1023 b) 6.022 × 1022 c) 6.022 × 1021 d) 3.011 × 1023
vi) The valve of constant in Nerst equation n
const. E = E° − In Q at 25°C is
_________
a) 0.0592 mV b) 0.0592 V c) 25.7 mV d) 0.0296 V
vii) The SI unit of molar conductivity is ____________
a) S cm2 mol–1 b) S dm3 mol–1 c) S m2 d) S m2 mol–1
SLR-M – 11
viii) Molecularity of an elementary reaction ____________
a) may be zero b) is always integral
c) may be semi-integral d) may be fractional
ix) Ethylene molecule has ____________ geometry.
a) square planar b) tetrahedral c) trigonal planar d) octahedral
x) _______________ is the unit of rate constant for 1st order reaction.
a) min–2 b) S c) S–1 d) min.
2. Attempt any five of the following : 10
a) Define rate constant and give its unit for second order reaction.
b) Define dipole moment.
c) Distinguish between homogeneous and heterogeneous catalysis.
d) What is osmatic pressure ? Explain it in short.
e) What is pseudo first order reaction ? Give one example.
f) Define pH and pOH.
3. A) Attempt any two of the following : 6
a) Write ionization products of NaCl, KNO3, CaCl2.
b) What are colligative properties ? Explain with example.
c) Write any three characteristics of ionic solids.
B) Explain the formation of methane molecule on the basis of VBT. 4
4. Attempt any two of the following : 10
i) Explain common ion effect with example.
ii) Write in detail formation of ethyne molecule on the basis of VBT.
iii) What is catalysis ? Explain its types with examples.
5. Attempt any two of the following : 10
i) How will you establish relation between specific conductance and molar
conductance ?
ii) Write any three statements of 1st law of thermodynamics, explain them in
short.
iii) The half life of 1st order reaction is 6.0 hrs, how long it will take to complete
75% of the reactant to products.
_____________________
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