Question
What do you understand by the following:
Qualitative analysis

Answer

Qualitative analysis : The analysis which involves the identification of the unknown substances in a given sample is called qualitative analysis.

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$\begin{array}{cc}
\ce{H}\\
|\\
\ce{H-C-H}\\
\phantom{.}\ce{H}\phantom{...} \phantom{}|\phantom{...} \phantom{}\ce{H}\phantom{.}\\
\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\
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|\\
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$\begin{array}{cc}

\phantom{.}\ce{H}\phantom{...} \phantom{}\ce{H}\phantom{...} \phantom{}\ce{H}\phantom{.}\\
\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\
\ce{H-C-C-C-H}\\
\phantom{}|\phantom{....} \phantom{}|\phantom{....} \phantom{}|\phantom{}\\
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The property of elements by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.