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Q121) Which of the following is an oxyacid?




SOLUTION

option 'c' is oxo acid of phsphorous
Answer: (c)


Q122) In the following reaction the product A is
PCl5 + water → HCl + A
[BVP pune 2002]




SOLUTION


Answer: (c)


Q123) Of the following compounds, the most acidic is ... [ MP PMT 2002]



SOLUTION

Pentaoxides are more acidic than trioxides and acidic nature decreases down the group from N to Bi
Answer:(b)



Q124) In nitrogen family, the H-M-H bond angle in the hydrides gradually becomes closer to 90° on going from N to Sb. This shows that gradually



SOLUTION

As we go down the bonded pairs goes' farther apart from the central atom. this suggest that orbitals used for bonding are closer to pure p orbitals. And angle becomes closer to 90°
Answer: (c)


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