Chapter 2: Padaarthon ki Khoj: Acidic, Basic aur Neutral
Kuch phal khatte kyun hote hain aur sabzi ka daag saabun se laal kyun? Is chapter mein litmus, gulaab aur haldi jaise prakritik indicator se padaarth jaanchenge, unhe acidic, basic ya neutral mein baantenge, aur dekhenge ki rozmarra mein acid aur base ek doosre ko kaise neutralise karte hain.
Is chapter mein tum
- litmus aur prakritik indicator se padaarth jaanchna
- padaarthon ko acidic, basic ya neutral mein baantna
- neutralisation samjhaana
- rozmarra ki samasyaaon mein neutralisation lagaana
Topics
- Litmus ek Indicator NCERT 2.1–2.1.1
Acid neele litmus ko laal; base laal ko neela; neutral kisi ko nahi.
- Gulaab, Haldi aur Gandh Indicator NCERT 2.1.2–2.1.3
Gulaab ark acid mein laal, base mein hara; haldi sirf base mein laal.
- Jab Acid Base se Mile NCERT 2.2
Acid aur base ek doosre ko neutralise karte hain.
- Rozmarra mein Neutralisation NCERT 2.3
Base acidic dank ko shaant karta hai; choona acidic mitti, compost basic mitti theek karti hai.
Key words
- Acidic
- neele litmus ko laal; aksar khatta
- Basic
- laal litmus ko neela; saabun jaisa chikna
- Neutral
- na acidic na basic
- Indicator
- acid aur base mein alag rang (ya gandh) dikhaane wala padaarth
- Neutralisation
- acid aur base ki kriya se salt aur paani, garmi ke saath
- Lichen
- saath rehte fungus aur alga; litmus isse milta hai
Summary
- Acid neele litmus ko laal, base laal ko neela; neutral kisi ko nahi.
- Gulaab ark: acid mein laal, base mein hara. Haldi sirf base mein laal.
- Acid + base → salt + paani + garmi (neutralisation).
- Neutralisation cheenti ke kaatne, mitti ke upchaar aur factory kachre mein madad karta hai.