Which one of the following structures represent nylon 6,6 polymer ?
In which of the following molecules, all atoms are coplanar ?
Which of the following can be used as the halide component for Freidel –Crafts reaction?
Jahn-Teller effect is not observed in high spin complexes of
Which one of the following statements related to lanthanons is incorrect ?
The correct increasing order of trans-effect of the following species is