Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : The alkali metals and their salts impart characteristic colour to reducing flame.
Reason R : Alkali metals can be detected using flame tests.
In the light of the above statements, choose the most appropriate answer from the options given below :
Solution
Assertion is not correct because alkali metals and
their salts impart characteristic colour to oxidising
part of flame and not reducing part of flame.
Reason is correct because all alkali metals can be
detected by their flame tests.
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
This question is part of PrepWiser's free JEE Main question bank. 96 more solved questions on s-Block Elements are available — start with the harder ones if your accuracy is >70%.