BiotechSurya · Class 2-3
Atta phoola, dahi jama
Bhature ka atta raat bhar rakh do, toh subah woh phoola-phoola kyun milta hai?
Socho pehle… phir dekho jawab
Kyunki usme khameer (yeast) naam ka ek nanha jeev kaam karta hai. Woh atte ka meetha hissa khaata hai aur gas chhodta hai. Gas ke bulbule atte ko phula dete hain.
Khameer itna chhota hai ki aankh se nahi dikhta, par woh zinda hai. Atte ke andar use khaana aur thodi garmi milti hai, toh woh gas banata hai. Wahi gas atte ko halka aur naram bana deti hai.
Kyun idli-dosa ka batter raat bhar rakha jaata hai? Kyunki usme bhi aise hi nanhe jeev kaam karte hain. Raat bhar mein batter mein bulbule aa jaate hain, isliye subah idli naram banti hai.
Dahi bhi aisa hi jaadu hai. Halke garam doodh mein ek chammach jaman milao aur dhak ke rakh do. Doodh ke ache bacteria doodh ko dahi bana dete hain. Sabzi ke chhilke bhi gamle mein sadd kar khaad ban jaate hain — yeh bhi unhi nanhe doston ka kaam hai.
Ghar pe try karo
Grown-up se ek katori halka garam doodh lo. Usme ek chammach dahi milao, dhak ke raat bhar kisi garam jagah rakh do. Subah katori tirchi karke dekho — doodh behta hai ya jam gaya? Gino, kitne ghante lage.
Wow!
Dahi jamaane wale aur atta phulaane wale jeev itne chhote hain ki ek chhoti si boond mein hazaaron samaa jaate hain!
Mummy-Papa ke liye
Aaj raat bachche se apne haathon dahi jamwaiye, aur subah poochiye: 'Doodh ko dahi kisne banaya?'
3 sawaal
- Atta phoolne mein kaun madad karta hai?
Jawab dekho
Khameer (yeast). Khameer gas banata hai aur uske bulbule atte ko phula dete hain.
- Doodh se dahi kaun banata hai?
Jawab dekho
Ache bacteria. Jaman ke ache bacteria doodh ko dahi mein badal dete hain.
- Sabzi ke chhilkon se gamle mein kya ban jaata hai?
Jawab dekho
Khaad (compost). Nanhe jeev chhilkon ko galaa kar paudhon ke liye khaad bana dete hain.
NCERT se jodo: NCERT Class 3 — hamare aas-paas (khaana aur uske badalte roop)