Time : Three Hours] [Maximum Marks : 80
B.Sc. (Part-I) Semester—I Examination
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1S : INDUSTRIAL CHEMISTRY (R/V)
Note :— (1) Question No. 1 is compulsory and carries 8 marks.
(2) Remaining six questions carry 12 marks each.
(3) Give chemical equations and draw diagrams wherever necessary.
(4) Use of calculator is allowed.
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1. (A) Fill in the blanks :
(1) Unit of calorific value in MKS system __________
(i) The sum of atomic weights of atoms present in molecule is called __________
(i) __________ is capacity of body to do work.
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(iv) Physical quantities such as length, mass time etc. are regarded as __________ units. 2
(B) Choose correct alternatives :
(i) Fluid static deals with study of fluid at :
(a) Rest (b) Motion
(c) Dynamic (d) None of these
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(ii) Which of the following is a derived unit ?
(a) m (b) kg;
(c) m/s (d) lb
(iii) The enthalpy change (i.e. heat evolved or absorbed) in a particular reaction is
same whether the reaction takes place in one step or several steps is
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(a) Newton's law (b) Hess's law
(c) Boyle's law (d) Avogadro's law
(iv) Molecular weight of H3PO4 is 98. Its equivalent weight is :
(a) 49 (b) 32.66
(c) 33 (d) 49.5 2
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(C) Answer in one sentence :
(i) What is crystallization ?
(ii) Define Latent heat of phase change.
(iii) What is Mole Fraction ?
(iv) State Dalton's law of pressure. 4
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UNIT-I
2. (a) Explain the terms :
(a) Normality (b) Molarity
(c) Derived unit (d) Specific heat 4
(b) Calculate the molecular weight of:
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(a) KMnO4 (b) K2Cr2O7
(c) KCl (d) KOH
(atomic wt of K = 39 Mn = 55, O=16, Cr = 52, H = 1, Cl = 35.5) 4
(c) 29.25 gm of Sodium Chloride is dissolved in 1000 ml of water. Find Normality and
Molarity of solution. 4
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OR
3. (a) Write the SI units of :
(a) Length (b) Mass
(c) Time (d) Temperature 4
(b) An aqueous Solution of sodium hydroxide is prepared by dissolving 20 kg of NaOH
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in 100 kg of water. Find wt % and mole % composition of Solution.
(Mol. wt. of NaOH = 40, H2O = 18) 4
(c) Convert the following :
(a) Length = 3ft into meter (b) Mass = 1 kg in lb
(c) Volume = 3m3 into l (d) Pressure = 2 atm into mm of Hg 4
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UNIT-II
4. (a) What is evaporation ? Give its overall and individual material balance. 4
(b) Explain :
(1) Stoichiometric coefficient
(ii) Stoichiometric equation 4
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(c) The carbon monoxide is reacted with hydrogen to produce methanol.
Calculate from the reaction :
(i) Stoichiometric ratio of H2 & CO
(i) Kmoles of CH3OH produced per Kmole of CO reacted. 4
OR
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5. (a) What is crystallization ? Give its overall and individual material balance. 4
(b) Explain in brief : Yield and Selectivity. 4
(c) A single effect evaporator is fed with 10000 kg/h of weak liquor containing 15%
caustic soda by weight and is concentrated to get thick liquor containing 40% by
weight caustic (NaOH). Calculate :
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(i) kg/h of water evaporated
(i) kg/h of thick liquor obtained. 4
UNIT-III
6. (a) Explain with example :
(1) Heat of formation
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(2) Heat of combustion 4
(b) Discuss the role of Solar energy in production of electricity.
(c) Explain in detail Biomass energy. 4
OR
7. (a) Explain:
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(1) Latent heat of vaporization.
(2) Latent heat of sublimation.
(3) Latent heat of fusion.
(4) Heat of Reaction. 4
(b) What are the uses of Solar energy ? How is it used in heating water ?
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(c) Explain tidal power. 4
UNIT-1V
8. (a) Describe Ultimate Analysis of Coal. 4
(b) Give an account of origin of Petroleum.
(c) Describe distillation of coal tar. 4
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OR
9. (a) Discuss mining of Petroleum. 4
(b) Explain manufacturing of water gas with diagram. 4
(c) Write in brief on different types of coal. 4
UNIT-V
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10. (a) Write in brief filmwise and dropwise condensation. 4
(b) State and explain Fourier's law. 4
(c) Explain conduction modes of heat transfer. 4
OR
11. (a) Explain the phenomenon of pool boiling. 4
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(b) Write a brief account on force and free convections. 4
(c) What are heat exchangers ? Explain parallel heat exchanger. 4
UNIT-VI
12. (a) Explain U-tube manometer and Pitot tube. 6
(b) Describe construction and working of reciprocating pump. 6
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OR
13. (a) Describe orifice meter on the basis of construction and working. 6
(b) Explain Reynold's number with Reynold's Experiment. 6
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