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  #2  
20th September 2014, 01:20 PM
Super Moderator
 
Join Date: Apr 2013
Re: DU M.Sc in Chemistry Model Paper

As per your need here I am providing Delhi University M.Sc Chemistry Model question paper:
The electromagnetic radiation associated with which of the following transitions in a hydrogen
atom will have the maximum wavelength?
(1) From n =1 to n = 3
(2) From n = 2 to n = 3
(3) From n = 3 to n = 4
(4) From n =1 to n a

Potassium ejects photoelectrons when irradiated with light of wavelength less than 710 nm.
Which of the following lights will eject photoelectrons from potassium with maximum
velocity ?
(1) Blue (2) Green (3) Violet (4) Yellow

In a Born Haber cycle which of the following contributes most in accounting for the high
negative standard enthalpy of formation of MgO(s), a stable ionic compound ?
(1) First and second ionization energies of magnesium
(2) Dissociation energy of oxygen
(3) Lattice energy
(4) Electron affinity of O(g)

Which of the following has the highest electronegativity ?
(1) Na
(2) Mg
(3) K
(4) Ca

Which of the following statements regarding cliborane is NOT correct ?
(1) It is an electron deficient molecule
(2) There is free rotation about B-B bond
(3) The bonding of two hydrogens is of one type whereas the bonding of the other four is
of different type
(4) Its final hydrolysis products are hydrogen and boric acid

Which of the following statements is NOT correct about freons ?
(1) They are gases at room temperature
(2) They are hydrolysed by water
(3) They are thermally stable
(4) They are chlorofluorocarbons

Which of the following statements regarding halides of N and P is NOT correct ?
(1) PF5 exists NF, does not
(2) PF3 hydrolyses but NE., does not
(3) PC13 hydrolyses in the same way as NO3
(4) PC13 is stable but NC/3 is not

Which of the following is the most basic ?
(1) P406 (2) P4010 (3) As406 (4) Sb203

Which of the following statements is NOT correct regarding thiosulphate ion ?
(1) It has tetrahedral shape (2) It has no sulphur-sulphur bond
(3) It can act as reducing agent (4) It can form complex with silver ion

Which of the following is NOT true about fluorine ?
(1) It forms polyhalide ions
(2) It forms interhalogen compounds
(3) It forms insoluble calcium fluoride
(4) It forms 07F2

Which of the following statements is NOT correct regarding XeF2 ?
(1) It is a linear molecule
(2) It reacts violently with water
(3) It oxidizes brornate to perbromate
(4) It acts as a fluoride ion donor

Of the following elements one that is NOT expected to display an oxidation state of +5 in
any of its compounds is :
(1) Ti (2) V (3) Cr (4) Mn

Chloride of which of the following will be coloured ?
(1) Ag (I) (2) Hg (II) (3) Co(II)
(4) Zn(II)

Which is NOT a correct statement regarding the number of unpaired electrons ?
(1) It is 4 in a high spin octahedral complex of d6 ion
(2) It is 0 in a low spin octahedral complex of d6 ion
(3) It is 0 in a tetrahedral complex of d8 ion
(4) It is 0 in a square planar complex of d8 ion

Malachite is a mineral of :
(1) manganese (2) magnesium (3) tin (4) copper

Which of the following statements is correct regarding the slag obtained during the extraction
of a metal like Cu or Fe ?
(1) The slag is lighter and lower melting than the metal
(2) • The slag is heavier and lower melting than the metal
(3) The slag is lighter and higher melting than the metal
(4) The slag is heavier and higher melting than the metal

Electrorefining cannot be used for which of the following ?
(1) Cu (2) Sn
(3) Pb (4) Al

Which among the following is the most soluble sulphide ?
(1) CuS (2) CdS (3) PbS
(4) NiS

Which of the following does not dissolve in hot nitric acid
(1) HgS (2) CuS
(3) CdS (4) SnS

Which of the following cations imparts violet colour to a Bunsen flame ?
(1) Sodium (2) Potassium (3) Calcium (4) Barium

On treatment with dil.H2SO4 which of the following anions would NOT produce a gas ?
(1) sulphide (2) thiosulphate (3) bromide (4) sulphite

On adding BaC12 solution to the solution of a sodium salt a white precipitate was obtained.
The precipitate could not be :
(1) BaSO4 (2) BaSO3 (3) BaF2 (4) BaCrO4
  #3  
16th February 2016, 03:23 PM
Unregistered
Guest
 
Re: DU M.Sc in Chemistry Model Paper

Hello sir, can here any one provide me model paper of DU M.Sc in chemistry? I’m going to attend DU M.Sc exam of chemistry. For preparation I want its model paper please provide me?
  #4  
16th February 2016, 03:25 PM
Super Moderator
 
Join Date: May 2012
Re: DU M.Sc in Chemistry Model Paper

Two year M.Sc program offered through DU exam. For this program various model paper provided by DU.

Eligibility:

Candidates should get 50% or above marks in aggregate and 50% or above marks in Chemistry. Candidate must have passed 10+2 (Senior Secondary) or equivalent examination recognized by the University of Delhi with Mathematics

Few question of DU M.Sc in Chemistry Model Paper:

(1) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains
(a) mixture of o− and p−bromotoluenes
(b) mixture of o− and p−dibromobenzenes
(c) mixture of o− and p−bromoanilines
(d) mixture of o− and m−bromotoluenes
Answer (a) mixture of o− and p−bromotoluenes

(2) Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
(a) 2,4,6-trinitrobenzene
(b) o-nitrophenol
(c) p-nitrophenol
(d) nitrobenzene
Answer (b) o-nitrophenol

(3) Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being
(a) 4f orbitals more diffused than the 5f orbitals
(b) lesser energy difference between 5f and 6d than between 4f and 5d orbitals
(c) more energy difference between 5f and 6d than between 4f and 5d orbitals
(d) more reactive nature of the actinoids than the lanthanoids
Answer (b) lesser energy difference between 5f and 6d than between 4f and 5d orbitals

(4) Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
(a) Metal sulphides are thermodynamically more stable than CS2
(b) CO2 is thermodynamically more stable than CS2
(c) Metal sulphides are less stable than the corresponding oxides
(d) CO2 is more volatile than CS2
Answer (a) Metal sulphides are thermodynamically more stable than CS2

(5) α-D-(+)-glucose and β-D-(+)-glucose are
(a) conformers
(b) epimers
(c) anomers
(d) enantiomers
Answer (c) anomers

(6) Which one of the following is the correct statement?
(a) Boric acid is a protonic acid
(b) Beryllium exhibits coordination number of six
(c) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase
(d) B2H6.2NH3 is known as ‘inorganic benzene’
Answer (c) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase

(7) Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is
(a) R4Si
(b) RSiCl3
(c) R2SiCl2
(d) R3SiCl
Answer (b) RSiCl3

(8) In a compound atoms of element Y from ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
(a) X4Y3
(b) X2Y3
(c) X2Y
(d) X3Y4
Answer (a) X4Y3

(9) Amount of oxalic acid present in a solution can be determined by its titration with KMnO4 solution in the presence of H2SO4. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl
(a) gets oxidised by oxalic acid to chlorine
(b) furnishes H+ ions in addition to those from oxalic acid
(c) reduces permanganate to Mn2+
(d) oxidises oxalic acid to carbon dioxide and water
Answer (c) reduces permanganate to Mn2+

(10) Which one of the following pairs of species have the same bond order?
(a) CN− and NO+
(b) CN− and CN+
(c) O− and CN−
(d) NO+ and CN+
Answer (a) CN− and NO+

Here I’m attaching PDF format of DU M.Sc chemistry exam paper:
Attached Files
File Type: pdf DU M.Sc chemistry exam paper 2014.pdf (4.29 MB, 217 views)
  #5  
16th February 2016, 04:28 PM
Super Moderator
 
Join Date: May 2012
Re: DU M.Sc in Chemistry Model Paper

Two year M.Sc program offered through DU exam. For this program various model paper provided by DU.

Eligibility:

Candidates should get 50% or above marks in aggregate and 50% or above marks in Chemistry. Candidate must have passed 10+2 (Senior Secondary) or equivalent examination recognized by the University of Delhi with Mathematics

Few question of DU M.Sc in Chemistry Model Paper:

(1) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains
(a) mixture of o− and p−bromotoluenes
(b) mixture of o− and p−dibromobenzenes
(c) mixture of o− and p−bromoanilines
(d) mixture of o− and m−bromotoluenes
Answer (a) mixture of o− and p−bromotoluenes

(2) Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
(a) 2,4,6-trinitrobenzene
(b) o-nitrophenol
(c) p-nitrophenol
(d) nitrobenzene
Answer (b) o-nitrophenol

(3) Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being
(a) 4f orbitals more diffused than the 5f orbitals
(b) lesser energy difference between 5f and 6d than between 4f and 5d orbitals
(c) more energy difference between 5f and 6d than between 4f and 5d orbitals
(d) more reactive nature of the actinoids than the lanthanoids
Answer (b) lesser energy difference between 5f and 6d than between 4f and 5d orbitals

(4) Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
(a) Metal sulphides are thermodynamically more stable than CS2
(b) CO2 is thermodynamically more stable than CS2
(c) Metal sulphides are less stable than the corresponding oxides
(d) CO2 is more volatile than CS2
Answer (a) Metal sulphides are thermodynamically more stable than CS2

(5) α-D-(+)-glucose and β-D-(+)-glucose are
(a) conformers
(b) epimers
(c) anomers
(d) enantiomers
Answer (c) anomers

(6) Which one of the following is the correct statement?
(a) Boric acid is a protonic acid
(b) Beryllium exhibits coordination number of six
(c) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase
(d) B2H6.2NH3 is known as ‘inorganic benzene’
Answer (c) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase

(7) Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is
(a) R4Si
(b) RSiCl3
(c) R2SiCl2
(d) R3SiCl
Answer (b) RSiCl3

(8) In a compound atoms of element Y from ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
(a) X4Y3
(b) X2Y3
(c) X2Y
(d) X3Y4
Answer (a) X4Y3

(9) Amount of oxalic acid present in a solution can be determined by its titration with KMnO4 solution in the presence of H2SO4. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl
(a) gets oxidised by oxalic acid to chlorine
(b) furnishes H+ ions in addition to those from oxalic acid
(c) reduces permanganate to Mn2+
(d) oxidises oxalic acid to carbon dioxide and water
Answer (c) reduces permanganate to Mn2+

(10) Which one of the following pairs of species have the same bond order?
(a) CN− and NO+
(b) CN− and CN+
(c) O− and CN−
(d) NO+ and CN+
Answer (a) CN− and NO+

Here I’m attaching PDF format of DU M.Sc chemistry exam paper:


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