| A: Line spectrum is characteristic of atomic spectra. |
| B: B and spectrum is characteristic of molecular spectra. |
A) both A and B are correct
B) A is correct B is wrong
C) 4 is wrong B is correct
D) both A and B are wrong
Correct Answer: A
Solution :
B and A spectrum is obtained whenever the incandescent vapours of the excited substance are in their molecular state i.e., and line spectrum is obtained whenever the incandescent vapours at low pressure of the excited substance are in their atomic state.
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