The microcosmic salt is

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$2KI + FeCl_2 \longrightarrow$ No reaction

The compound called microcosmic salt is

Which of the following salts does not give a borax bead test?

When sodium chloride is heated with concentrated $H_2SO_4$ and solid potassium dichromate,which compound containing $Cr$ in the $+6$ oxidation state is formed as a gas?

Match List-$I$ with List-$II$:

List-$I$ Solid salt treated with dil. $H_2SO_4$	List-$II$ Anion detected
$A.$ Effervescence of colourless gas	$I.$ $NO_2^-$
$B.$ Gas with smell of rotten egg	$II.$ $CO_3^{2-}$
$C.$ Yellowish green gas with pungent and suffocating smell	$III.$ $S^{2-}$
$D.$ Brown fumes	$IV.$ $Cl^{-}$

Choose the correct answer from the options given below: