12345>>
1.

The molar conductivities at infinite dilution for sodium acetate, HCl and NaCl are 91 S cm2 mol-1,425.9 S cm2 mol-1  and 126.4 S cm2 mol-1  respectively. The molar conductivity of acetic acid at infinite dilution is 


A) 390.5 $S cm^{2}mol^{-1}$

B) 530.9 $S cm^{2}mol^{-1}$

C) 300.5 $S cm^{2}mol^{-1}$

D) 930.5 $S cm^{2}mol^{-1}$



2.

Which among the following  polymer does not  show cross linking in it?


A) Nylon-6

B) Bakelite

C) Melamine

D) Vulcanised Rubber



3.

The effective atomic number of Iron (Z=26) in [Fe(CN)6]-3  is


A) 36

B) 33

C) 35

D) 34



4.

In which among the following compounds oxidation number of nitrogen is +5 ?


A) $N_{2}O$

B) $N_{2}O_{3}$

C) $NO_{2}$

D) $HNO_{3}$



5.

A gas performs 0.20 kJ work on surrounding and absorbs  120 J  of heat from the surrounding. Hence, change in internal energy is 


A) 200 J

B) 120.2 J

C) -200 J

D) 440 J



12345>>