Exam Details
| Subject | Chemistry | |
| Paper | ||
| Exam / Course | B.Tech. Civil (Construction Management) / (Water Resources Engineering)/ (Aero Space Engineering) BTCM-BTWRE | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Write the correct choice for the following:
When heat is evolved during a process, the process is and LH is
endothermic, +ve
exothermic, +ve
exothermic, -ve
endothermic, -ve
A reaction in which the reaction rate is determined by only one concentration variable, raised to the power one is
Second order rx^n
First order rx^n
Third order rx^n
Zero order rx^n
Which of the following is meta directing electrophilic aromatic substitution
-OH
N02, -OH
N02, -CH3
N02, -CHO
Nitrogenous, often basic compounds obtained from plants e.g. quinine, morphine are called
Alkaloids
Essential oils
Polymers
Free fatty acids
Silicon oils are synthesized by adding a requisite amount of to poly (dimethylsiloxane).
tribromomethylsilane
trichlorosilane
trichloromethylsilane
None of the above
DNA fragments are separated by
chemical technology
idiophase
gas chromatography
gel-electrophoresis
The energies for n state of a particle of mass 9.108 x 10^-31 kg confined to a one-dimensional box of length of 0.1 nm will be
6·024 x 10^-18 J
6·024 x 10^-10J
3·012 x J
3·012 x 10^-10 J
The sp^2 hybridization with trigonal shapes are shown by
C2H4, BF3
C2H4, CCl4
BF3, CCl4
C2H4, BeF4
Electrodes (such as those of Zn Mg) used for protecting a metal wherein they act as the anode in the place of iron, since they have a more negative EO value than that of a Fe are called
Cathodic inhibitor
Sacrificial anode
Galvanic corrosion
None of the above
The relative stability of various conformations of ethane follow the order
Skew Staggered> Eclipsed
Staggered >Skew> Eclipsed
Eclipsed Skew> Staggered
Staggered> Eclipsed> Skew
Draw a simplified flow diagram to illustrate the liquification of air by combined Linde and Claude process and its fractional distillation.
What is Crystal Field theory?
Draw molecular orbital energy level diagram in an octahedral ML6 complex.
Write a short note on inert gas compounds of Fluorine.
Sea water contains 16,600 kg of chlorine 9200 kg of sodium and 1180 kg of magnesium per million litres of sea water. What is the molarity of each What concentration of charge is unaccounted for? The unaccounted charge is balanced by other anions (At. wt. Cl =35·5, Na =23·0, Mg= 24·3).
Why are diaphragm cells, rather than mercury cells recommended for the manufacture of chlorine, NaOH and hydrogen?
Brine is purified before being used in the manufacture of soda ash. Give reason.
50 gm of an acid A is dissolved in a litre of solution. The distribution ratio for" the partition of the acid between ether and water is 5. If one litre of ether is available for use, how much acid will be extracted if
200 cm^3 of ether is used each time?
all the ether is used in a single extraction?
Derive the relationship between kc,kp ,kx and k n for the reaction aA+bB+ Pp+Qq+....
Define Le Chatelier principle in the formation of NH3.
Define Faraday's law of Electrolysis and Electrolytic conduction with significance.
At 298 the l0 value of NH4Cl; "1/2 BaCl2 and !. Ba(OH)2 in ohm^-1 cm are 149-9, 139-9 and 262.2 respectively. Calculate l0 of NH40H.
What is a fuel cell Draw and explain schematic representation of a H2-02 fuel cell using an alkaline electrolyte.
What is the Heisenberg's uncertainty principle?
Derive the expression of energy in Bohr's atomic model.
What is the maximum number of electrons which can possess the following set of quantum numbers?
n
n l=3
n m
Calculate the number of atoms contained within
A primitive cubic unit cell Abody-centred cubic unit cell A face-centred cubic unit cell
Atomic AI (at. wt. =26·98 g/mol) crystallizes into an FCC structure with a density of 2698 kg/m3 . X-ray of wavelength, 0·1537 nm, when diffracted from the planes of this lattice, give a maximum intensity at an angle of 19·2°. Calculate the Avogadro number.
Draw the Newman projections of butane using the C to C bond as reference in the staggered form.
Arrange the following hydrocarbons in the order of increasing boiling point
3-dimethyl butane
n-hexane
2-dimethyl butane
2-methyl pentane
Complete the reaction sequence
CH3CHO NH3 X H2,Ni Y.
What is the angle between two sp3 hybrid orbitals and two sp hybrid orbitals?
Write all possible isomers of C5H10 and give their !UPAC names.
What is Phase Rule?
Draw the phase diagram of one component system.
Calculate the degree of freedom in each
02 H20
CaC03(s) CaO CO2
Aqueous solution of NaOH
N2 H2 NH3
10.(a) What do you understand by tissue culture?
10.(b) Name the reaction centre chlorophylls of Photosystem I and Photosystem II.
10.(c) Name the monomers required for the synthesis of Nylon-6,6. Write down the reaction involved.
10.(d) What is the basic disadvantage of a photocatalytic process to remove carcinogenic material from drinking water?
10.(e) Why is natural rubber called as polyisoprene
When heat is evolved during a process, the process is and LH is
endothermic, +ve
exothermic, +ve
exothermic, -ve
endothermic, -ve
A reaction in which the reaction rate is determined by only one concentration variable, raised to the power one is
Second order rx^n
First order rx^n
Third order rx^n
Zero order rx^n
Which of the following is meta directing electrophilic aromatic substitution
-OH
N02, -OH
N02, -CH3
N02, -CHO
Nitrogenous, often basic compounds obtained from plants e.g. quinine, morphine are called
Alkaloids
Essential oils
Polymers
Free fatty acids
Silicon oils are synthesized by adding a requisite amount of to poly (dimethylsiloxane).
tribromomethylsilane
trichlorosilane
trichloromethylsilane
None of the above
DNA fragments are separated by
chemical technology
idiophase
gas chromatography
gel-electrophoresis
The energies for n state of a particle of mass 9.108 x 10^-31 kg confined to a one-dimensional box of length of 0.1 nm will be
6·024 x 10^-18 J
6·024 x 10^-10J
3·012 x J
3·012 x 10^-10 J
The sp^2 hybridization with trigonal shapes are shown by
C2H4, BF3
C2H4, CCl4
BF3, CCl4
C2H4, BeF4
Electrodes (such as those of Zn Mg) used for protecting a metal wherein they act as the anode in the place of iron, since they have a more negative EO value than that of a Fe are called
Cathodic inhibitor
Sacrificial anode
Galvanic corrosion
None of the above
The relative stability of various conformations of ethane follow the order
Skew Staggered> Eclipsed
Staggered >Skew> Eclipsed
Eclipsed Skew> Staggered
Staggered> Eclipsed> Skew
Draw a simplified flow diagram to illustrate the liquification of air by combined Linde and Claude process and its fractional distillation.
What is Crystal Field theory?
Draw molecular orbital energy level diagram in an octahedral ML6 complex.
Write a short note on inert gas compounds of Fluorine.
Sea water contains 16,600 kg of chlorine 9200 kg of sodium and 1180 kg of magnesium per million litres of sea water. What is the molarity of each What concentration of charge is unaccounted for? The unaccounted charge is balanced by other anions (At. wt. Cl =35·5, Na =23·0, Mg= 24·3).
Why are diaphragm cells, rather than mercury cells recommended for the manufacture of chlorine, NaOH and hydrogen?
Brine is purified before being used in the manufacture of soda ash. Give reason.
50 gm of an acid A is dissolved in a litre of solution. The distribution ratio for" the partition of the acid between ether and water is 5. If one litre of ether is available for use, how much acid will be extracted if
200 cm^3 of ether is used each time?
all the ether is used in a single extraction?
Derive the relationship between kc,kp ,kx and k n for the reaction aA+bB+ Pp+Qq+....
Define Le Chatelier principle in the formation of NH3.
Define Faraday's law of Electrolysis and Electrolytic conduction with significance.
At 298 the l0 value of NH4Cl; "1/2 BaCl2 and !. Ba(OH)2 in ohm^-1 cm are 149-9, 139-9 and 262.2 respectively. Calculate l0 of NH40H.
What is a fuel cell Draw and explain schematic representation of a H2-02 fuel cell using an alkaline electrolyte.
What is the Heisenberg's uncertainty principle?
Derive the expression of energy in Bohr's atomic model.
What is the maximum number of electrons which can possess the following set of quantum numbers?
n
n l=3
n m
Calculate the number of atoms contained within
A primitive cubic unit cell Abody-centred cubic unit cell A face-centred cubic unit cell
Atomic AI (at. wt. =26·98 g/mol) crystallizes into an FCC structure with a density of 2698 kg/m3 . X-ray of wavelength, 0·1537 nm, when diffracted from the planes of this lattice, give a maximum intensity at an angle of 19·2°. Calculate the Avogadro number.
Draw the Newman projections of butane using the C to C bond as reference in the staggered form.
Arrange the following hydrocarbons in the order of increasing boiling point
3-dimethyl butane
n-hexane
2-dimethyl butane
2-methyl pentane
Complete the reaction sequence
CH3CHO NH3 X H2,Ni Y.
What is the angle between two sp3 hybrid orbitals and two sp hybrid orbitals?
Write all possible isomers of C5H10 and give their !UPAC names.
What is Phase Rule?
Draw the phase diagram of one component system.
Calculate the degree of freedom in each
02 H20
CaC03(s) CaO CO2
Aqueous solution of NaOH
N2 H2 NH3
10.(a) What do you understand by tissue culture?
10.(b) Name the reaction centre chlorophylls of Photosystem I and Photosystem II.
10.(c) Name the monomers required for the synthesis of Nylon-6,6. Write down the reaction involved.
10.(d) What is the basic disadvantage of a photocatalytic process to remove carcinogenic material from drinking water?
10.(e) Why is natural rubber called as polyisoprene
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