Which blue liquid is obtained on reacting equimolar amounts of two gases at `-30^@C`?

Which blue liquid is obtained on reacting equi molar amounts of two gases at -30^@C ?

Which blue liquids obtained on reacting equimolar amounts of two gases at -30^@C ?

Blue solid which is obtained on racting equimolar amounts of two gases at 245K is

A pale bule liquid is obtained by equuimolar mixture of two gases at - 30^(circ)C .

A pale bule liquid is obtained by equuimolar mixture of two gases at - 30^(circ)C .

Blue liquid which is formed at - 30^@ C by mixing of two gases is.

Blue liquid which is formed at - 30^@ C by mixing of two gases is.

How many of 0.1 N HCl are required to react completely with 1 g mixture of Na_2CO_3 and NaHCO_3 containing equimolar amounts of two ?