Define spectrum.

Assertion: It is not essential that all the lines available in the emission spectrum will also be available in the absorption spectrum. Reason: The spectrum of hydrogen atom is only absorption spectrum.

The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

What is electromagnetic spectrum? Name the important part of the electromagnetic spectrum.

The wavelength of emission line spectrum and absorption line spectrum of a substance are related as

Hydrogen Spectrum & it's types || Different series in hydrogen spectrum

Define the following (i) Anionic detergents (ii) Limited spectrum antibiotics (iii) Tranquilizers