Question

1. Emission spectroscopy is based on emission of electrons.

a). Emission of electrons. b). Emission of protons. c). Emission of light of characteristic wavelength.
d). None of the above.

2. With the help of spectroscope we can determine

a). Percentage of single element only
b). Perrcentage of more than one element
c). We can know about the presence of elements in a given met
d). All of the above.

3. The main limitation of spectroscopy is

a). It requires a very less maintenance.
b) It is a very cheap equipment. c) It can detect impurities present in the sample.
d) It needs predetermined caliberation.

4. The gas used in spectroscopy is
a). Sulphur
b) Argon
c) Nitrogen
d) oxygen​

Answer 1

Answer:

1. a
2. c
3. d
4. c

Explanation:

Answer 2

Answer:

1.Emission spectroscopy is a spectroscopic technique which examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state.