Answer:B, D
Answer:B, D
Reason (R) : Aluminium is trivalent while silicon is tetravalent.
Answer:Both A and R are correct and R is the correct explanation of A.
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Reason (R) : Silicons are organosilicon polymers, which have (–R2SiO–) as repeating unit.
Answer:Both A and R are correct but R is not the correct explanation of A.
Answer:Cl2 > Br2 > F2 > I2
Answer:K3[AlF6]
Answer:BBr3 > BCl3 > BF3
Answer:two moles of ammonia
Answer:the reduction of nitrate to nitric oxide
Answer:NH3 < PH3 < AsH3 < SbH3 : Increasing basic strength
Answer:A mixture of O2 and N2
Answer:N3H
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