(a) Na3, (I) (b) Na3, (III) (c) Na3, (II) (d) Na3, (I) The freezing point of a solution, prepared from 1.25 gm of a non-electrolyte and 20 gm of water, is 271.9 K. (a) NH3 or NH4OH (b) KCN or NaCN (c) HCl or HNO3 (d) H2SO4 Which of the following compounds having highest and lowest melting point respectively ? (1) CsF (2) LiF (3) HCl (4) HF Correct answer is (a) 2, 3 (b) 1, 4 (c) 4, 3 (d) 2, 1 Silver bromide when dissolve in hypo solution gives complex. Mechanism : (a) CH3CH2CH2CH2Cl (b) CH3CH2CH2Cl (c) CH3 – O – CH2Cl (d) CH3Cl In the esterification reaction of alcohol (a) OH– is replaced by C6H5OH (b) H is replaced by CH3OH- gp (c) OH is replaced by CH3COO- gp (d) OH is replaced by Cl The process of the extraction of Au and Ag is based on their solubility in (a) E-3-amino - 3 - nitro - 2 - methyl propenoic acid (b) Z -3- amino - 3 - nitro - 2 - methyl propenoic acid (c) 3 - Amino - 3 - nitro - 2 - methyl propenoic acid (d) Trans - 3 - amino - 3 - nitro - 2 - methyl propenoic acid Which of the following undergoes hydrolysis by S 1 N (a) 58.2 (b) 29.1 (c) 55.83 (c) 27.91 The correct relation for hydrolysis constant of NH4CN is The bond enthalpy of O – H is (a) 464 kJ mol-1 (b) –464 kJ mol-1 -1 (c) 232 kJ mol (d) –232 kJ mol-1 The specific heat of a metal is 0.11 and its equivalent weight is 18.61. The conjugated base of (CH 3 ) 2 N H 2 is (a) CH3NH2 (b) (CH3)2N+ (c) (CH3)2N (d) (CH3)2NH The enthalpy of combustion of H2(g), to give H2O(g) is –249 kJ mol–1 and bond enthalpies of H – H and O = O are 433 kJ mol–1 and 492 kJ mol–1 respectively. Best of LuckĪn azeotropic mixture of two liquids boil at a lower temperature than either of them when (a) It is saturated (b) It does not deviate from Raoult’s law (c) It shows negative deviation from Raoult’s law (d) It show positive deviation from Raoult’s law Which of the following statement is wrong ? (a) Geometrical isomers are diastereomers (b) Enantiomers have same chemical and physical properties (c) Conformers are non inter convertable to each other (d) 3-methyl haxane shows optical isomerism One fourth (¼) marks will be deducted for indicating incorrect response of each question. At Disha Publication, we strive to bring out the best guidebooks that students would find to be the most useful for Bank Probationary exams.
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