उद्योग और रसायन : गोरख प्रसाद द्वारा हिंदी पीडीऍफ़ पुस्तक – विज्ञान | Udhyog Aur Rasayan : by Gorakh Prasad Hindi PDF Book – Science (Vigyan)
Pustak Ka Vivaran : Aajkal Sabun ke choorn athava chippiyan bhi bahut lokopayogei ho gayi hai kyonki ve badi saralata se pani mein ghul jati hai. Sabun ko jal-sheetit lohe ke belanon ke beech dabakar chippiyaan banayeen jati hai. In chippiyon kee motai. 0045 inch athava usase bhee kam hoti hai. Choorn Sabun mein Sabun ke sath Aajka………….
Description about eBook : Nowadays, soap powder or chippis have become very popular as they dissolve in water easily. Chips are made by pressing soap in between water-cooled iron cylinders. Thickness of these chips 0045 inches or less. Nowadays with soap in powdered soap…………..
