Which of the following statement(s) about flame tests is/are correct?
(I) In the flame test of 
, the colour seen with the naked eye is the same as the colour seen through blue glass.
(II) In the flame test of 
, an apple-green colour is observed by naked eye.
(III) In the flame test of 
, a brick-red colour is observed through blue glass.
Choose the most appropriate answer from the options given below:
Text Solution
Verified by ExpertsA
shows blue-green flame, unchanged through cobalt (blue) glass; 
gives apple-green colour when observed by naked eye. 
is brick-red to the eye but appears green through blue glass, so III is false.
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