Devanagari Consonant Organization Analysis

Devanagari script organizes consonants based on phonetic features. The question highlights two distinct rows:

• Row 1: क ख ग घ ङ (IPA: $k$, $k^h$, $g$, $g^h$, $\eta$)
• Row 2: प फ ब भ म (IPA: $p$, $p^h$, $b$, $b^h$, $m$)

The goal is to identify the phonetic parameter that defines the difference between these two rows.

Analyzing Potential Distinguishing Parameters

We evaluate each option based on the sounds represented:

• Voicing: Row 1 includes voiceless ($k$, $k^h$) and voiced ($g$, $g^h$) sounds. Row 2 also has voiceless ($p$, $p^h$) and voiced ($b$, $b^h$) sounds. Thus, voicing is present in both rows but isn't the primary distinguishing feature between them.
• Manner of Articulation: All consonants in both rows are stops (plosives). The manner of articulation is the same for both series.
• Place of Articulation:
  • Row 1 (क-ङ) represents sounds produced at the velar place (near the soft palate).
  • Row 2 (प-म) represents sounds produced at the labial place (using the lips).
  This difference in *where* the sound is produced is significant.
• Aspiration: Both rows contain pairs of aspirated (e.g., $k^h$, $g^h$, $p^h$, $b^h$) and unaspirated sounds (e.g., $k$, $g$, $p$, $b$). Aspiration is a secondary feature within the series, not the primary difference between the rows.

Conclusion: Identifying the Key Difference

The fundamental phonetic characteristic separating the क-ङ series (velars) from the प-म series (labials) is the Place of Articulation.