Phosphorus is manufactured by heating in an electric furnace a mixture of

  • A
    Bone ash and coke
  • B
    Bone ash and silica
  • C
    Bone ash,silica and coke
  • D
    None of these

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Dinitrogen and dioxygen,the main constituents of air,do not react with each other in the atmosphere to form oxides of nitrogen because:

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The nitrogen oxide$(s)$ that contain$(s)$ $N-N$ bond$(s)$ is(are):
$A$. $N_2O$
$B$. $N_2O_3$
$C$. $N_2O_4$
$D$. $N_2O_5$

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