On heating $KMnO_4$,one among the following is not formed:

When potassium permanganate $(KMnO_4)$ is heated at $513 \ K$,it decomposes to form two manganese-based products. The physical properties of the product in which manganese has a higher oxidation state than the other are:

The yellow colour solution of $Na_2CrO_4$ changes to orange-red on passing $CO_2$ gas due to the formation of

Which one of the following statements is correct when $SO_2$ is passed through acidified $K_2Cr_2O_7$ solution?

Write a note on halide compounds of transition elements.

Which of the following is the green coloured powder produced when ammonium dichromate is used in fireworks?