द्वैभाषिक मुंबई राज्याची स्थापना आणि महाराष्ट्र राज्याची स्थापना अनुक्रमे या दिवशी झाली :

The correct answer is Option B (1 November 1956 / 1 May 1960).

Key Points:
• The Bilingual State of Bombay (comprising Gujarati and Marathi speaking areas) was formed on 1st November 1956 following the States Reorganisation Act.
• After the intense Samyukta Maharashtra Movement, the bilingual state was divided, and the unilingual State of Maharashtra (for Marathi speakers) was officially formed on 1st May 1960.
• Option 2 accurately represents both these historical dates in order.
• Key Takeaway: Bilingual Bombay State was formed on 1 Nov 1956; Maharashtra State on 1 May 1960.