Vashpan aur Sanghanan
Class 6 Science · Chapter 9: Rozmarra mein Alag Karne ke Tareeke · NCERT Curiosity section Ch 9
Seekho
Samudra ke paani se namak kaise milta hai? Gujarat aur Tamil Nadu ke tatton par samudra ka paani uthle kyaariyon mein chhoda jaata hai. Dhoop aur hawa paani ko vashpit karti hai, aur namak kristal banke bach jaata hai.
Tum try kar sakte ho: chammach bhar namak paani mein gholo, plate mein daalkar kuch din dhoop mein rakho. Paani gaayab, namak ke kristal bache. Vashpan ghule hue thos ko drav se alag karta hai.
Aur paani bhi wapas chahiye? Namkeen paani dhake bartan mein ubaalo. Bhaap upar uthkar thande dhakkan par sanghanit hoti hai, aur shuddh paani cup mein tapakta hai, namak bartan mein bachta hai: pehle vashpan phir sanghanan.
Explore: sahi tareeka chuno.
- Har ek sort karo.
Yaad rakho
- Vashpan ghule thos (jaise namak) ko drav se alag karta hai.
- Vashpan ke baad sanghanan se shuddh paani wapas milta hai.
Quick check
Namkeen paani se namak kaunsa tareeka nikaalta hai?
- Vashpan
- Filtration
- Sieving
- Osaai
Answer
Vashpan. Paani vashpit hota hai aur ghula namak bach jaata hai.
Socho
Ret, namak aur paani ke mishran se ret aur namak dono kaise wapas paoge, socho.
Ek answer
Mishran filter karo: ret filter paper par rehti hai (sukha lo). Phir jo namkeen paani nikla uska vashpan karo, namak bach jaayega.
Practice
Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.