WEST BENGAL JOINT ENTRANCE EXAMINATION,2011
Biology
( English Version )
Multiple Choice Question
(Each question carries one mark)
41. The normality of ‘30 volume H2O2’ is
A. 2.678 N B. 5.336 N C. 8.034 N D. 6.685 N
42. Reaction of formaldehyde and ammonia gives
A. Hexamethylene tetramine B. Bakelite
C. Urea D. Triethylene Tetramine
43. A plot of ln k against 1/T (abscissa) is expected to be a straight line with intercept on ordinate axis equal to
A. [tex]{{\Delta S^\circ } \over {2.303R}}[/tex] B. [tex]{{\Delta S^\circ } \over R}[/tex] C. [tex] - {{\Delta S^\circ } \over R}[/tex] D. [tex]R \times \Delta S^\circ[/tex]
44. Which of the following represents the composition of Carnallite mineral ?
A. K2O.Al2O3.6SiO2 B. KNO3
C. K2SO4.MgSO4.MgCl2.6H2O D. KCl.MgCl2.6H2O
45. The solubility of Ca3(PO4)2 in water is y moles/litre. Its solubility product is
A. 6y4 B. 36y4 C. 64y5 D. 108y5
46. Paracetamol is
A. Methyl salicylate B. Phenyl salicylate
C. N-acetyl p-amino phenol D. Acetyl salicylic acid
47. Anhydrous ferric chloride is prepared by
A. Dissolving Fe(OH)3 in concentrated HCl B. Dissolving Fe(OH)3 in dilute HCl
C. Passing dry HCl over heated iron scrap D. Passing dry Cl2 gas over heated iron scrap
