Which of the following compounds is a tribasic acid?

  • A
    $H_3PO_2$
  • B
    $H_3PO_3$
  • C
    $H_3PO_4$
  • D
    $H_4P_2O_7$

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The products formed by complete hydrolysis of $PCl_3$ are

The number$(s)$ of $-OH$ group$(s)$ present in $H_3PO_3$ and $H_3PO_4$ is/are

Which of the following is $NOT$ true for $N_2O$?

$H_3PO_4$ $\xrightarrow{250\ ^oC}$ $(X)$ $\xrightarrow{600\ ^oC}$ $(Y)$
$H_3PO_4$ $\xrightarrow{600\ ^oC}$ $(Y)$
$(X)$ and $(Y)$ are:

Which of the following statements is $NOT$ true for both white and red phosphorus?

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