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Question
Which of the following reaction can produce boron nitride 'BN'
Options:
A .  BCl3+(C2H5)+NC−ICHCl3−−−−→?
B .  NH4Cl+Na2B4O7RedHot−−−−→
C .  BCl3+NH4Cl140∘C−−−−→C6H5Cl?NaBHa−−−−−→
D .  All the above
Answer: Option B
:
B
2NH4Cl+Na2B4O7Δ2BN+B2O3+2NaCl+4H2O

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