Placenta is an organ which connects the foetus with maternal body. Human placenta is अपरा वह अंग है जो भ्रूण को मातृ शरीर से जोड़ता है। मानव अपरा
The correct statement with regard to H+2 & H−2 is
Assertion : For drying H2S, Conc. H2SO4 cannot be used.
Reason: Moist H2S is oxidized by Conc.H2SO4