Which of the following statements is (are) correct? 

Antimony on reaction with conc.  ${\text{HNO}}_{\text{3}}$ gives antimonic acid. 

Manganese on reaction with cold and dilute  ${\text{HNO}}_{\text{3}}$ gives ${\text{NO}}_{\text{2}}$  gas. 

${\text{HNO}}_2$  disproportionate to give  ${\text{HNO}}_{\text{3}}$  and NO 

${\text{HNO}}_{\text{3}}$  on reaction with  ${\text{P}}_{\text{4}}{\text{O}}_{\text{10}}$ gives  ${\text{N}}_{\text{2}}{\text{O}}_{\text{5}}$