Distinguish between Zinc nitrate and Copper nitrate (by heating)

How does ammonium hydroxide help in distinguish between: Zinc nitrate and Lead nitrate.

How does ammonium hydroxide help in distinguishing between : Zinc nitrate and lead nitrate

Distinguish : zinc nitrate and lead nitrate, by heating.

Distinguish on the basis of heating in dry test tube Zinc nitrate and copper nitrate

Distinguish between: Sodium nitrate & sodium sulphite [using dilute sulphuric acid]

Distinguish by heating the following in dry test tube. zinc nitrate and copper nitrate

Which metal nitrate does not give NO_2 on heating?

When zinc nitrate crystals are strongly heated it gives:

Distinguish between the following pairs of compounds using the test given within the brackets. Calcium nitrate and potassium nitrate (using a flame test)

Ammonium nitrate decomposes on heating into