Delhi University MSc Chemistry entrance exam previous years paper

Can you provide me the Delhi University MSc Chemistry entrance exam previous years paper??????

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Here I am sharing the Delhi University MSc Chemistry entrance exam previous years paper:

1. Which of the following is an antibiotic ?
(A) Paracetamol (B) Aspirin
(C) Caffeine (D) Penicillin

2. Diazonium salt can be prepared by reacting nitrous acid with :
(A) Toluene (B) Phenol
(C) Aniline (D) Pyridine

3. Friedel-Craft’s alkylation proceeds in the presence of :
(A) Lewis acid (B) Lewis base
(C) Peroxides (D) Sodium hydroxide

4. Oils and fats are esters formed from glycerol and :
(A) Sulphonic acids (B) Long chain aliphatic acids
(C) Aromatic acids (D) α-Amino acids

5. Acetaldehyde reacts with CH3MgI to yield :
(A) Isopropyl alcohol (B) Ethanol
(C) Acetone (D) t-Butyl alcohol
CH3 Br O

6. The compound CH3–CH–CH2–CH–C–CH3 has the IUPAC name as :
(A) 3-Bromo-5-methyl-2-hexanone (B) 3-Bromo-2-heptanone
(C) 4-Bromo-2-methyl-5-hexanone (D) 3-Bromo-4-isopropyl-2-butanone

7. Which is the correct statement ?
(A) Ethanol should boil at a temperature lower than that for ethane.
(B) Ethanol is less acidic than phenol
(C) Phenol is more acidic than acetic acid
(D) Ethyne is a non-linear molecule.

8. A carboxylic acid can be converted into the corresponding anhydride using :
(A) SOCl2 (B) SO2
(C) Conc. H2SO4 (D) P2O5

9. The first step in the chlorination of methane in the presence of U.V. light is :
(A) Heterolytic fission of chlorine molecule (B) C–H bond cleavage
(C) Homolytic fission of chlorine molecule (D) Formation of a carbocation

10. Which is not a true statement ?
(A) Starch is a polysaccharide
(B) Sucrose is a carbohydrate
(C) Fructose and glucose don’t have the same molecular formula
(D) Glucose is a monosaccharide

11. The synthetic resin bakelite can be obtained by using the starting material :
(A) Formic acid (B) Acetic acid
(C) Formamide (D) Formaldehyde

12. Which of the following is not contributing to the environmental pollution ?
(A) Nitrogen (B) Carbon dioxide
(C) Sulphur dioxide (D) Chlorofluorohydrocarbons

13. Enzymes are biocatalysts belonging to a class of compounds known as :
(A) Alkaloids (B) Steroids
(C) Proteins (D) Polyesters

14. Aromatic sulphonic acids are important compounds for producing :
(A) Soaps (B) Rubber
(C) Nylons (D) Detergents

15. Which of the following is most basic ?
O
(A) H2N–C–NH2 (B) C6H5–NH2
O
(C) C2H5–NH2 (D) C6H5–C–NH2

16. The compound which cannot undergo dehydrohalogenation is :
(A) Methyl bromide (B) n-Butyl Chloride
(C) Ethyl iodide (D) Isopropyl bromide

17. Acetanilide is obtained by a reaction of aniline with :
(A) Acetone (B) Acetamide
(C) Methyl chloride (D) Acetyl chloride

18. Which of the following does not undergo Cannizzaro reaction ?
(A) Acetaldehyde (B) Formaldehyde
(C) Trichloroacetaldehyde (D) Benzaldehyde

19. The number of sigma bonds and pi-bonds in CH3–CH=CH2 are respectively :
(A) 7, 1 (B) 8, 1
(C) 1, 8 (D) 2, 7

20. Which one is an electrophile ?
(A) AlCl3 (B) C2H5NH2
(C) CN¯ (D) C2H5OH

21. The hybridized orbitals employed to explain the geometry of I3 – are :
(A) sp2 (B) sp3d2
(C) sp3 (D) sp3d

22. The planar geometry is exhibited by :
(A) ClO4
– (B) CO3 2-
(C) NI3 (D) PF5

23. The largest O–O bond length is expected in the species :
(A) O2 2+
(B) O2 +
(C) O2 –
(D) O2 2–

24. The values of n and m for the spectral lines to be observed in the visible region in the relationship
(A) n = 1; m = 2, 3, 4….. (B) n = 1; m = 3, 4, 5…..
(C) n = 2; m = 3, 4, 5….. (D) n = 2; m = 4, 5, 6…..

25. The weakest base amongst the halide ions is :
(A) F- (B) Cl-
(C) Br- (D) I-

26. Li+ ions would form the most thermally stable compound with the anion :
(A) CO3 2-
(B) N3 -
(C) ClO4 -
(D) NO3 -

27. The correct sequence representing first ionization energies (in ev) of IInd period elements is
represented by :
(A) C < B (B) Be < B
(C) O < N (D) N < C
28. The carbide ion [C3
4–], present in Mg2 C3 is isoelectronic with :
(A) C2N2 (B) CO2
(C) C2
2– (D) CN¯

29. An element whose hydride when reacted with water would produce H2 gas is :
(A) CsH (B) BeH2
(C) AlH3 (D) SiH4

30. The number of ione pairs on oxygen in the complex Et2O.B F3 :
(A) 0 (B) 1
(C) 2 (D) 3

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