p-Block Elements-I - Result Question 48

####19. Match the following.

(2006,6M)

Column I Column II
A. Bi3+(BiO)+ p. Heat
B. Missing or unrecognized delimiter for \left q. Hydrolysis
C. SiO44Si2O76 r. Acidification
D. (B4O72)[B(OH)3] s. Dilution by water
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Answer:

Correct Answer: 19. F

Solution:

  1. (A) Bi3+ hydrolysis to (BiO)+q.

(B) [AlO2 exist in basic medium, on acidification gives Al(OH)3r.

(C) Orthosilicate (SiO44) on heating changes into pyrosilicate Si2O76p

(D) Tetraborate ion [B4O72] on treatment with dil. acid hydrolysis gradually to orthoboric acid q,r.



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