Here I am giving you solved question paper for medical chemistry subject of West Bengal Joint Entrance Examinations in a PDF file attached with it

1. During the emission of a positron from a nucleus, the mass number of the daughter element remains the
same but the atomic number
(A) is decreased by 1 unit (B) is decreased by 2 units
(C) is increased by 1 unit (D) remains unchanged
Solution : (A)

2. Four gases P, Q, R and S have almost same values of _b_ but their _a_ values (a, b are van der Waals constants)
are in the order Q < R < S < P. At a particular temperature, among the four gases the most easily liquefiable
one is
(A) P (B) Q (C) R (D) S
Solution : (A)

3.  emission is always accompanied by
(A) formation of antineutrino and  particle (B) emission of  particle and -ray
(C) formation of antineutrino and -ray (D) formation of antineutrino and positron
Solution : (C)

4. The values of H of a certain reaction are _ 400 kJ mol_1 and _ 20 kJ mol_1 K_1 respectively. The temperature
below which the reaction is spontaneous is
(A) 100°K (B) 20°C (C) 20°K (D) 120°C
Solution : (C)
[It should be 20 K but not 20°K]

8. The system that contains the maximum number of atoms is
(A) 4.25 g of NH3 (B) 8 g of O2 (C) 2 g of H2 (D) 4 g of He
Solution : (C)
9. Metal ion responsible for the Minamata disease is
(A) Co2+ (B) Hg2+ (C) Cu2+ (D) Zn2+
Solution : (B)

10. Among the following observations, the correct one that differentiates between SO3
2_ and SO4
2_ is
(A) Both form precipitate with BaCl2, SO3
2_ dissolves in HCl but SO4
2_ does not
(B) SO3
2_ forms precipitate with BaCl2, SO4
2_ does not
(C) SO4
2_ forms precipitate with BaCl2, SO3
2_ does not
(D) Both form precipitate with BaCl2, SO4
2_ dissolves in HCl but SO3
2_ does not
Solution : (A)

11. The pH of 10_4 M KOH solution will be
(A) 4 (B) 11 (C) 10.5 (D) 10
Solution : (D)

Attached Files

WBJEE Medical Chemistry question paper.pdf (373.0 KB, 171 views)