How many of the following compounds are non- polar?
`NH_3` ,`NF_3` ,`BeH_2` ,`CO_2` ,`H_2O` ,HI, `H_2` ,`BF_3` ,`CH_4` `CHCl_3` ,`CH_2Cl_2` ,
C`Cl_4`

How many of the following compounds would give Iodoform test (1) s CH_(3) - CO - CH_(2) - CO - OCH_(3) (2) C_(6) H_(5) - CO - CH_(2) - CO - C_(6)H_(5) (3) CH_(3) - CHCl - CH_(2) - CH_(3) (4) CH_(3) - CHNH_(2) - CH_(3) (5) CH_(3) - CO - CH_(2)I (6) CH_(3) - CO - O - CO - CH_(3) (7) CH_(3) - CO - O - CH_(3) (8) CH_(3) - CO - Cl (9) CH_(3) - CHOH - CH_(2) - CH_(3) (10) CH_(3) - CO - CH_(2) - CHOH - CH_(3)

How many of the following have zero dipole moment? C Cl_(4),,C_(2)O_(3),C_(3)O_(2),CO,CS_(2),CO_(2),,C Cl_(2),CH_(2)Cl_(2),C_(2)H_(2)

Among the following , greenhouse gases are CO_2.CH_4.CF_2Cl_2.H_2O,N_2O,O_3,N_2

Which of the following has larger bond angle in the following pairs ? (a)NH_(3),PH_(3)(b)BeF_(2),BF_(3)(c )H_(2)O,CO_(2)(d)H_(2)O,H_(2)S(e)C Cl_(4),C_(2)H_(2) ?