In how many of the following cases more than four atoms are in same plane
`XeF_(4), PCl_(5)[Ag(CN)_(2)]^(-),[Pt (CN)_(4)]^(2-),CH_(3)-CH=C-C-=C-CH_(3)`
`[CO(NH_(3))_(6)]^(3+),CH_(2)=C=CH_(2),[PtCl_(6)]^(2-)`

Which atoms in each of the following molecules remain in the same plane and why? (i) CH_(3)CH=CH_(2) (ii) C_(6)H_(5)C-=C CH_(3) (iii) CH_(3)CH=C=C=CHCH_(3) (iv) CH_(3)COCH_(2)CH_(3)

The number of compounds having all atoms in a single plane are XeF_(4),SF_(4), Al_(2)Cl_(6),SnCl_(4),I_(2)Cl_(6), H_(2)C=C=C=CH_(2), PhCl, C_(2)(CN)_(4),Icl_(3), PCl_(5)

The number of compounds having all atoms in a single plane are XeF_(4),SF_(4), Al_(2)Cl_(6),SnCl_(4),I_(2)Cl_(6), H_(2)C=C=C=CH_(2), PhCl, C_(2)(CN)_(4),ICl_(3), PCl_(5)

How many of the following alkyl halides would react by S_(N^(1)) mechanism? CH_(3)Br,CH_(3)CH_(2)Br,CH_(3)CH_(2)CH_(2)I,(CH_(3))_(3)CBr,BrCH_(3)CH=CH_(2),C_(6)H_(5)CH_(2)Br,(CH_(3))_(3)C CH_(2)Br,C_(6)H_(5)CHBrCH_(3),CH_(3)CH=CHCH_(2)Cl . .

In which of the following compounds corban atom undergoes hybridisation of more than one type (i) CH_(3) CH_(2)CH_(2)CH_(3) (ii) CH_(3) - CH = CH - CH_(3) (iii) CH_(2) = CH - CH_(2) - CH_(3) (iv) H - C -= C - H

Which is the most suitable reagent among the following distinguish comound (3) from the others? (1) CH_(3)C-=C-CH_(3) (2) CH_(3)CH_(2)-CH_(2)-CH_(3) (3) CH_(3)CH_(2)C-=CH (4) CH_(3)CH=CH_(2)

Correct order of basic strength of various amines given below : C_(6)H_(5)CH_(2)NH_(2)(A), C_(6)H_(5)NH_(2)(B),CH_(3)NH_(2)(C ), (CH_(3))_(2)NH(D)&(CH_(3))_(3)N(E)