observation and reactions during chemical property of ammonia. Ammonia

[@shivchenko1]

Sir, Shiv Sanket Singh Rana this side, 2012 batch. Hope you remember me. Great to see you in your favourite mode: teaching with fun. Wish you good health and happiness.

[@precollegetutor]

Yr comment and suggestions are more than welcome for obvious reasons

[@satyarthparth1570]

Bhaiya ab kya kar rhe hain aap

[@shivchenko1]

@@satyarthparth1570 working as a product manager for digital apps

[@X_Talk786]

Sir tedhi nib, Or 11 tomar Sir yaad aya 😊😊