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(A) $1$. Nitrogen molecules exhibit a band spectrum because molecular spectra consist of bands due to transitions between electronic,vibrational,and r

Vedclass · Accepted Answer

$1-C, 2-A, 3-B, 4-D$

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(A) $1$. Nitrogen molecules exhibit a band spectrum because molecular spectra consist of bands due to transitions between electronic,vibrational,and rotational energy levels.$2$. Incandescent solids emit a continuous spectrum because they contain a wide range of frequencies due to thermal agitation.$3$. Fraunhofer lines are dark lines observed in the solar spectrum,which are caused by the absorption of specific wavelengths by gases in the solar atmosphere,thus forming an absorption spectrum.$4$. An electric arc between iron rods produces a line emission spectrum characteristic of the iron atoms present in the arc.Therefore,the correct matching is $1-C, 2-A, 3-B, 4-D$.

List-$I$	List-$II$
$1$. Nitrogen molecules	$(A)$ Continuous spectrum
$2$. Incandescent solids	$(B)$ Absorption spectrum
$3$. Fraunhofer lines	$(C)$ Band spectrum
$4$. Electric arc between iron rods	$(D)$ Emission spectrum

Match the appropriate pairs from List-$I$ and List-$II$:
List-$I$ List-$II$
$1$. Nitrogen molecules $(A)$ Continuous spectrum
$2$. Incandescent solids $(B)$ Absorption spectrum
$3$. Fraunhofer lines $(C)$ Band spectrum
$4$. Electric arc between iron rods $(D)$ Emission spectrum

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Match the appropriate pairs from List-$I$ and List-$II$:List-$I$List-$II$$1$. Nitrogen molecules$(A)$ Continuous spectrum$2$. Incandescent solids$(B)$ Absorption spectrum$3$. Fraunhofer lines$(C)$ Band spectrum$4$. Electric arc between iron rods$(D)$ Emission spectrum