Flamephotometry

In Flame photometry, Flame color’s intensity tells about

• how much of the element present

• Number of compound present

• complex structure of compound

• none of above

Flame photometry is mainly used for,

• 1st and 2^nd group elements

• 3^rd and 4^th group elements

• Whole periodic table

• none of this

The elements like gold, silver, & inert gases are not analyzed by flame photometry because

• They need higher amount of energy for excitation than 1^st and 2^nd group.

• They need lesser amount of energy for excitation than 1st and 2nd group.

• not related to energy

• depends on molecular weight

Which of the following is the principle of Flame emission photometers?

• Radiation is absorbed by non-excited atoms in vapour state and are excited to higher states

• Medium absorbs radiation and transmitted radiation is measured

• Colour and wavelength of the flame is measured

• Only wavelength of the flame is measured

In Flame emission photometers, the measurement of (a)   is used for qualitative analysis.

In Flame emission photometers, the measurement of _____________ is used for quantitative analysis.

• Colour

• Intensity

• Velocity

• Frequency

Which of the following is disadvantage of Laminar flow burner used in Flame photometry?

• Noiseless

• Stable flame for analysis

• Efficient atomization of sample

• Sample containing two or more solvents can be burned efficiently

Laminar flow burner used in Flame photometers is also known as

• Turbulent burner

• Premix burner

• Total consumption burner

• Nozzle mix burner

Which of the following is the advantage of prism monochromators?

• Dispersion is non-overlapping

• Dispersion occurs in non-linear manner

• Dispersion is overlapping

• Dispersion occurs in a linear manner

Which of the following is the advantage of grating monochromators?

• Dispersion is non-overlapping

• Dispersion occurs in non-linear manner

• Dispersion is overlapping

• Dispersion occurs in a linear manner