पुढीलपैकी शब्दातील समूह एकच मानला जात असल्यामुळे एकवचनी नसणारे शब्द कोणते ?

The correct answer is Option A (Dheeg).

Key Points:
• In Marathi grammar, collective nouns that represent a collection considered as a single unit are typically treated as singular (उदा. रास, जोडपे, मंडळ, सैन्य, मंडळी).
• However, the word 'ढीग' (heap/pile) does not strictly behave solely as an indivisible singular group entity in all usages; its plural form can also be 'ढीग' (उदा. धान्याचे अनेक ढीग).
• According to the official MPSC answer key, option (1) 'ढीग' is designated as the correct option for words not conforming to this singular-only collective grouping.
• Key Takeaway: As per the MPSC answer key, 'ढीग' is classified as not being exclusively singular under the collective entity rule.