EKLAVYA EDUCATION

                                      PHYSICAL CHEMISTRY XII-2018 Q1 . In summer, a given sample of milk turns sour at 27°C in 48 hours. In a 2 refrigerator at 2°C, milk can be stored three times longer before it sours. Calculate the activation energy of the souring of milk. R=8.31 JK–1 mol–1 16. Find the Gibbs energy change of the cell at 298K. 3 Cr |Cr 3+ (0.1M)       ||          Cu2+(0.01M) + |Cu.  Given E° Cr 3+ / Cr = – 0.75V, Cu 2+ /Cu = +0.34V, F = 96500C. Q2 . Differentiate between the following (a) Multimolecular colloids and macromolecular colloids (b) Coagulation and peptisation c) Activity and selectivity of catalyst Q3 .Analysis shows that a metal oxide has the empirical formula M 0.96 O 1.00 . Calculate the percentage of M 2+ and M 3+ ions in this crystal? Q4 .In an ionic com...

NEET 2018 PRACTISE PAPER-THERMO,EQUILIBRIUM,BONDING AND                                         STATE OF MATTER  BY DR SUDHIR TOMAR Q1. How are bond length and bond energies related? A)The higher the bond energy, the longer the bond length B)They are not related C)The higher the bond energy, the shorter the bond length D)The lower the bond energy, the shorter the bond length Q2.Which type of bonding would be expected between S and Cl?             A)Polyionic                                                   B)Polar covalent       ...