khadiya

khadiya (Chalk) ek chikni, safed evam sachhidr (porous) avasaadi shail (sedimentary rock) hai. yeh choone ke patthar ka ek roop hai jo khanij kailsaait se bana hota hai.

upayog

  • shyaamapatt (blaikabord) par likhne ke liye
  • dharati ka peeech theek karne ke liye
  • dantamanjan nirmaan mein

baahari kadiyaaain