41) A
2) B
3) B
1)A:Alkali metals form ionic hydride .
R:Alkali metals have low EN,their hydrides conduct electriicty when fused and liberate H2 at anode
2)A:Dipole moment of pyridine >pyrrole but in opp direction
R:In pyrolle N atom contributes 2 electrons for delocalized pi orbital but this is not true for pyridine
3)A:Addn of AgNO3 to aq KI gives -ve sol wheras add of KI to AgNO3 gives +ve sol of AgI
R:Sol particles adsorb common ions present in sol acquire their character
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6 Answers
41) How c ??
Alkali metals do have low electronegativity
Their hydrides r ionic so they conduct electricity
43) It may be c
(I'm not sure of my ans also .So someone else has to confirm this )
1061. A
2. B (in pyridine there is -I effect of N while in pyrrole there is +R,-I (+R overpoewers) effect of N)
Since in pyrrole two opposing factors are working so dipole moment decreases