About: Types of Coal & How Coal is Formed ? (Anthracite, Bituminous, Lignite & Peat) (In Hindi)
Lower gondwana age is upper Carboniferous to lower triaasic... lower gondwana coals of are of Carboniferous age...ok
Thank u sir♥️
I understand about coal from your video sir thanks
I'm a metallurgical engineering student . Sir I think you are from mechanical engineering . please let me know
nice work, but please beware of splitting. ykkkkkkk ............
Love for this video 🤝❤
Thanks sir but sir ...
her coal ka temperature kitna hota hai
I work in coal mine chhattisgarh
Sir Isame aliphatic se aromatic jata hai ki aromatic se aliphatic Pls reply
Explanations mst hai it help me a lot
all videos r superb..
awesome video ....