The flame test method of analysis can be used to distinguish between A - VCE - SSCE Chemistry - Question 1 - 2006 - Paper 1

The flame test is a qualitative analysis technique used to detect the presence of certain metal ions based on the characteristic colors they emit in a flame. For lithium nitrate, the flame test produces a bright crimson red flame, whereas calcium nitrate results in a brick red flame. Thus, the flame test can effectively distinguish between these two nitrates based on the color produced in the flame.