P-Block Elements Ques 525
Question: Borax is converted into crystalline boron by the following steps: $ Borax\xrightarrow{X}H_3BO_3\xrightarrow{\Delta }B_2O_3\xrightarrow[\Delta ]{Y}B $ X and Y are respectively:
Options:
A) $ HCl,Mg $
B) $ HCl,C $
C) $ C,Al $
D) $ HCl,Al $
Show Answer
Answer:
Correct Answer: D
Solution:
$ Borax\xrightarrow{HCl}H_3BO_3 $ $ B_2O_3~\xrightarrow{HCl}B( crystalline ) $ $ B_2O_3~\xrightarrow[\Delta ]{Mg}B( Amorphous ) $
