CHM · CHM-2026-C11-083रसायन विज्ञान (Chemistry)
Phenolphthalein is used as an indicator for the titration of sodium hydroxide solution against a standard solution of oxalic acid. The colour change that is observed at an alkaline pH close to the equivalence point during this titration is
- Apinkish red to yellow
- Byellow to pinkish red
- Cpink to colourless
- Dcolourless to pink
उत्तर कुंजी लंबित — केवल संदर्भ हेतु, स्कोर नहीं होगा