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6.

As an aqueous solution of metal ion M1 reacts separately with reagents  Q and R  in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2  always forms tetrahedral complexes with these reagents. An aqueous solution of M2 on  reaction with  reagent S gives white precipitate  which dissolves in  excess of S. The  reactions are summarized in the scheme given below

   2732021467_m10.PNG

$ M_{1}$, Q, R  respectively are


A) $Zn^{2+},KCN $and $HCl$

B) $Ni^{2+},KCN $and $HCl$

C) $Cd^{2+},KCN $and $HCl$

D) $Co^{2+},KCN $and $HCl$



7.

Schemes 1 and 2 describe sequential transformation of alkynes M and  N. Consider only the major products formed in each step for both schemes.

2732021265_m9.PNG

The correct statement  with respect to  product Y is


A) I t gives a positive Tollen&#39;s test and is a functional isomer of x

B) it gives a positive Tollen&#39;s test an is a geometrical isomer of X

C) it gives a positive iodoform test and is a functional isomer of X

D) it gives a positive iodoform test and is a geometrical isomer of X



8.

X and Y  are two volatile liquids with molar weights of 10 gmol-1 and 40 g mol-1 respectively, two cotton plugs, one soaked in X and the other soaked in Y, are simultaneously placed at the ends of a tube of length L=24 cm, as shown in the figure.

 The tube is filled with an inert gas at 1 atm pressure and a temperature of 300K. Vapours of X and Y react to form a product which is first observed at a distance d cm from the plug soaked in X. Take  X and Y to have equal molecular diameters and assume ideal behaviour for the inert gas and the two vapours.

2732021838_vapour.PNG

The experimental value of d is found to be smaller than the estimate obtained using Graham's law. This due to


A) larger mean free path for X as a compared of that of Y

B) larger mean free path for Y as compared to that of X

C) increased collision frequency of Y with the inert gas compared to that of X axis with the inert gas

D) increased collision frequency of X with the inert gas compared to that of Y axis with the inert gas



9.

X and Y  are two volatile liquids with molar weights of 10 gmol-1 and 40 g mol-1 respectively, two cotton plugs, one soaked in X and the other soaked in Y, are simultaneously placed at the ends of a tube of length L=24 cm, as shown in the figure.

 The tube is filled with an inert gas at 1 atm pressure and a temperature of 300K. Vapours of X and Y react to form a product which is first observed at a distance d cm from the plug soaked in X. Take  X and Y to have equal molecular diameters and assume ideal behaviour for the inert gas and the two vapours.

 2732021838_vapour.PNG

  The value of d in cm ( shown in the figure) as estimated from Graham's law, is


A) 8

B) 12

C) 16

D) 20



10.

The acidic hydrolysis of ether (X)  shown below is fastest when

2732021917_m8.PNG

  


A) one phenyl group is replaced by a methyl group

B) one phenyl group is replaced by a para-methoxyphenyl group

C) two phenyl groups are replaced by two para-methoxyphenyl groups

D) no structural change is made to X



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