West Bengal Joint Entrance Exam Question Paper

Will you please provide the Question Paper of the West Bengal Joint Entrance Exam ?

[Arun Vats]

Here is the list of few questions of West Bengal Joint Entrance Exam paper

1. A train approaching a railway platform with a speed of 20 mst starts blowing the whistle. Speed of sound In air Is 340 ms1. If the frequency of the emitted sound from the whistle Is 640 Hz, the frequency of sound to a person standing on the platform will appear to be
A. 600 Hz B. 640 Hz C. 680 Hz D. 720 Hz

2. A straight wire of length 2 m carries a current of 1OA If this wire is placed In a uniform magnetic field of
0.15 T making an angle of 45° with the magnetic field, the applied force on the wire will be

Which one of the following characteristics belongs to an electrophile?
A. It is any species having electron deficiency which reacts at an electron rich C-centre
B. li Is any species having electron enrichment, that reacts at an electron deficient C-centre
C. It Is cationic In nature
D. It Is anionic In nature

Which one of the following methods Is used to prepare Me3COEI with a good yield?
A. Mixing EtONa with Me3CC1
B. Mixing Me3CONa with EICI
C. Heating a mixture of (1:1) EtOH and Me3COH in presence of conc. H2S04
D. Treatment of Me3COH with EtMgI

58.5 gm of NaCI and 180gm of glucose were separately dissolved In l000ml of water. Identify the correct statement regarding the elevation of boiling point (b.p.) of the resulting solutions.
A. NaC1 solution will show higher elevation of b.p.
B. Glucose solution will show higher elevation of b.p.
C. Both the solution will show equal elevation of b.p.
D. The b.p. elevation will be shown by neither of the solutions

Which of the following will show a negative deviation from Raoult’s law?
A. Acetone-benzene B. Acetone-ethanol
C. Benzene-methanol D. Acetone-chloroform
In a reversible chemical reaction at equilibrium, if the concentration of any one of the reactants Is doubled, then the equilibrium constant will
A. also be doubled B. be halved
C. remains the same D. becomes one-fourth

Identify the correct statement from the following in a chemical reaction.
A. The entropy always increases
B. The change In entropy along with suitable change In enthalpy decides the fate of a reaction
C. The enthalpy always decreases
D. Both the enthalpy and the entropy remain constant








For questions , here is the attachment