पहिला चॉकलेट बार कोणी बनवला? A. नेस्ले B. हर्षे कंपनी C. जोसेफ फ्राय अँड सन्स. D. पियर्सन

The British company J. S. Fry & Sons of Bristol made the first solid chocolate bar in 1847, by mixing cocoa butter, sugar and cocoa powder into a paste that could be moulded.