Here I am providing the list of few questions of Banaras Hindu University M.SC Chemistry entrance exam question paper which you are looking for .

1. Which of the following compounds has pyramidal geometry?
(A) B(CH3)3 (B) (CH3)3C+ (C) (CH3)3N (D) BF3

2. Which of the following compounds exhibits optical isomerism?
(A) 1-Chloropentane (B) 1,5-Dichloropentane
(C) 3-Chloropentane (D) 2-Chloropentane

3. Identify the atom-economy reaction from the following.
(A) Grignard reaction (B) Wittig reaction
(C) Diels-Alder reaction (D) Friedel-Crafts reaction

4. Chiral molecule B has [α] = +24 for 40% optical purity with (R)-configuration. What will be [α] of the molecule B with (S)-configuration having 100% optical purity?
(A) -30 (B) +30 (C) +60 (D) -60

5. The correct order of stability of carbocations is:
(A) CH3+ > (CH3)2CH+ > CH3CH2+ > (CH3)3C+
(B) (CH3)3C+ > (CH3)2CH+ > CH3CH2+ > CH3+
(C) (CH3)3C+ > (CH3)2CH+ > CH3+ > CH3CH2+
(D) CH3CH2+ > CH3+ > (CH3)3C+ > (CH3)2CH+

6. The IUPAC name of is:
(A) Vinylethyl alcohol (B) 3-Ethylbut-3-en-1-ol
(C) 2- Ethylbut-3-en-1-ol (D) 2-Ethenylbutanol

7. Which of the following is aromatic?

8. The coordination number of a metal ion situated at the center of a square antiprism of ligand atoms is:
(A) 2 (B) 4 (C) 6 (D) 8

9. The strongest base among the following is:
(A) AsH3 (B) PH3 (C) NH3 (D) SbH3
2

10. The qualitative test of “phosphate” is performed in the presence of an acid and
(A) Vanadate (B) Arsenate (C) Permanganate (D) Molybdate

11. Which of the following is associated with the “layer type” structure?
(A) Graphite (B) Diamond (C) Fullerene (D) None of these

12. Which of the following pairs cannot be used to produce hydrogen?
(A) Copper and hydrochloric acid (B) Sodium and ethanol
(C) Iron and sulfuric acid (D) Iron and steam

13. Which of the following elements is associated with nitrogen fixing enzyme?
(A) Calcium (B) Nickel (C) Molybdenum (D) Cobalt

14. In eastern part of India and in Bangladesh many people are affected (skin symptom) by drinking water that contains the toxic element
(A) Hg (B) Sb (C) As (D) Se

15. For which of the following sets of values of ∆H and ∆S will a reaction be spontaneous at 50o C ?
∆H (kJ) ∆S (J/K)
(A) +10 +30
(B) +10 - 30
(C) - 10 +30
(D) - 10 -30

16. Hg2+ + 2e- → Hg E0 = 0.85 V
Zn2+ + 2e- → Zn E0 = - 0.76 V
Given the cell potentials shown above, the overall cell potential for the following reaction is
Zn + Hg2+ Zn2+ + Hg
(A) 0.09 V (B) 1.61 V (C) 0.80 V (D) 0.18 V

17. Half lifetime (t1/2) of a second order reaction is proportional to (where A0 is the initial concentration of reactant)
(A) A0 (B) A02 (C) 1/A0 (D) Independent of A0

18. The equivalent conductance (ohm-1cm2eqv.-1) at infinite dilution (Λ0) of acetic acid (HAc) will be [Given Λ0 (HCl) = 420, Λ0 (NaCl) = 126 and Λ0 (NaAc) = 91]:
(A) 385 (B) 637 (C) 455 (D) 203
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19. 20 ml of 0.2 M NaOH and 40 ml of 0.1 M H2SO4 are mixed together in a standard flask and made up to 250 ml. The pH of the resultant solution is closest to:
(A) 5 (B) 6 (C) 7 (D) 8

20. Copper crystallizes in an fcc lattice with sides 3.61 Å. Atomic weight of copper is 63.54. The density of copper can be estimated as:
(A) 3.25 (B) 7.80 (C) 8.97 (D) 9.20

21. A shell leaves the gun barrel with a speed of 25 ms-1 at an angle of 45o from the horizon. Its trajectory (height vs horizontal distance travelled) is (A) Straight line (B) Circle (C) Parabola (D) Hyperbola

22. The unit vector perpendicular to the plane defined by the two vectors (i + j+ k) and (i - j - k) is (A) (i - j) /2 (B) (j - k) /2 (C) (k - i) /2 (D) (i - j + k) /3

23. If x2 + y2 + 4x - 6y + k = 0 represents a circle of radius 5 the value of k is (A) 12 (B) -12 (C) 10 (D) -10

24. In the binary scale the number 55 is represented by (A) 111001 (B) 110111 (C) 010101 (D) 101010

25. sin∫π02 θ dθ = (A) 0 (B) π/4 (C) π/2 (D) π