Question

Match List - I with List - II.

List - I	List - II
A. Air Quality B. Sound Intensity C. Radiation Potency D. Light intensity	I. Decibels II. Roentgen III. Particulate Matter IV. Candela

Choose the correct answer from the options given below:

• A. A-I, B-II, C-III, D-IV
• B. A-II, B-III, C-IV, D-I
• C. A-III, B-IV, C-I, D-II
• D. A-III, B-I, C-II, D-IV

Hint:

Decibel measures sound, Roentgen measures radiation exposure, and Candela measures light intensity.

Answer 1

The Correct Option is D

Concept: Different environmental and physical quantities are measured using specific units or indicators.
• Air quality is commonly assessed using particulate matter.
• Sound intensity is measured in decibels.
• Radiation exposure is measured in roentgen.
• Light intensity is measured in candela.

Step 1: Match Air Quality.
Air quality is determined by the concentration of pollutants such as particulate matter (\(PM\)).
Hence, \[ A \rightarrow III \]

Step 2: Match Sound Intensity.
Sound intensity is measured in decibels (\(dB\)).
Hence, \[ B \rightarrow I \]

Step 3: Match Radiation Potency.
Radiation exposure or potency is measured in roentgen.
Hence, \[ C \rightarrow II \]

Step 4: Match Light Intensity.
Light intensity is measured in candela.
Hence, \[ D \rightarrow IV \]

Step 5: Select the correct option.
Thus, the correct matching is: \[ A-III,\; B-I,\; C-II,\; D-IV \] Therefore, the correct answer is: \[ \boxed{(D)\ A-III,\; B-I,\; C-II,\; D-IV} \]