Q.1
Beer Lambert’s law gives the relation between which of the following?
  • a) Reflected radiation and concentration
  • b) Scattered radiation and concentration
  • c) Energy absorption and concentration
  • d) Energy absorption and reflected radiation
Q.2
In which of the following ways, absorption is related to transmittance?
  • a) Absorption is the logarithm of transmittance
  • b) Absorption is the reciprocal of transmittance
  • c) Absorption is the negative logarithm of transmittance
  • d) Absorption is a multiple of transmittance
Q.3
Which of the following is not a limitation of Beer Lambert’s law, which gives the relation between absorption, thickness and concentration?
  • a) Concentration must be lower
  • b) Radiation must have higher bandwidth
  • c) Radiation source must be monochromatic
  • d) Does not consider factors other than thickness and concentration that affect absorbance
Q.4
Beer’s law states that the intensity of light decreases with respect to ___________
  • a) Concentration
  • b) Distance
  • c) Composition
  • d) Volume
Q.5
Lambert’s law states that the intensity of light decreases with respect to __________
  • a) Concentration
  • b) Distance
  • c) Composition
  • d) Volume
Q.6
The representation of Beer Lambert’s law is given as A = abc. If ‘b’ represents distance, ‘c’ represents concentration and ‘A’ represents absorption, what does ‘a’ represent?
  • a) Intensity
  • b) Transmittance
  • c) Absorptivity
  • d) Admittance
Q.7
Which of the following is not true about Absorption spectroscopy?
  • a) It involves transmission
  • b) Scattering is kept minimum
  • c) Reflection is kept maximum
  • d) Intensity of radiation leaving the substance is an indication of a concentration
Q.8
Transmittance is given as T = P/Po. If Po is the power incident on the sample, what does P represent?
  • a) Radiant power transmitted by the sample
  • b) Radiant power absorbed by the sample
  • c) Sum of powers absorbed and scattered
  • d) Sum of powers transmitted and reflected
Q.9
What is the unit of absorbance which can be derived from Beer Lambert’s law?
  • a) L mol-1 cm-1
  • b) L gm-1 cm-1
  • c) Cm
  • d) No unit
Q.10
What is the unit of molar absorptivity or absorptivity which is used to determine absorbance A in Beer Lambert’s formula?
  • a) L mol-1 cm-1
  • b) L gm-1 cm-1
  • c) Cm
  • d) No unit
0 h : 0 m : 1 s