ChemistryHiranyagarbha · Class 11-12
Methanol aur ethanol: ek carbon ka farak, zindagi ka farak
Methanol aur ethanol mein sirf ek CH₂ ka farak hai — phir ek aankhon ki roshni kyun cheen leta hai?
Socho pehle… phir dekho jawab
Farak molecule mein kam, body ke andar ke reaction mein zyada hai. Liver ka enzyme dono ko oxidise karta hai, par methanol se formaldehyde aur phir formic acid banta hai, jo optic nerve aur body ke acid-base balance ko nuksaan pahunchata hai.
Methanol CH₃OH hai, ethanol C₂H₅OH. Dono ko liver ka enzyme alcohol dehydrogenase pakadta hai. Ethanol ka raasta acetaldehyde se acetic acid ki taraf jaata hai. Methanol ka raasta: CH₃OH → HCHO (formaldehyde) → HCOOH (formic acid). Formic acid khoon mein jam kar acidosis karta hai aur optic nerve ko damage kar sakta hai — isliye nakli sharaab se andhapan aur maut ki khabrein aati hain.
Yahan ek sundar chemistry hai: ilaaj mein aisi dawa di jaati hai jo usi enzyme ko pehle gher le (competitive inhibition). Enzyme busy, toh methanol dheere toot-ta hai aur body use bahar nikaal paati hai. Yeh doctor ka kaam hai, ghar ka nuskha nahi.
Trade-off: methanol industry ke liye zaroori solvent aur fuel hai, sasta bhi. Toh sarkar use band nahi kar sakti; use pehchaanne layak banana (rang, gandh milana) ek tareeka hai. Par niyam itne kade bhi na hon ki imaandaar industry ka kaam ruk jaaye — balance dhoondhna hi policy hai.
Ghar pe try karo
Kisi hand sanitizer ya dawai ki bottle ka label padho — ingredients mein 'ethanol', 'isopropyl alcohol' ya 'methanol' dhoondho. Phir notebook mein teeno ke formula likho aur socho ki kaunsa peene layak toh bilkul nahi hai (jawab: koi bhi nahi — sanitizer peene ki cheez hai hi nahi).
Wow!
Ek hi enzyme, do alag molecules — aur ek raasta sirka jaisi cheez tak jaata hai, doosra cheenti ke dank wale acid tak.
3 sawaal
- Body mein methanol ke oxidation se pehle kaunsa compound banta hai?
Jawab dekho
Formaldehyde. Methanol → formaldehyde → formic acid.
- Methanol poisoning ka sabse jaana-maana khatarnaak asar kya hai?
Jawab dekho
Aankhon ki roshni jaana (optic nerve damage). Formic acid optic nerve ko nuksaan pahunchata hai.
- Ilaaj mein enzyme ko 'busy' karne wali dawa kis concept par kaam karti hai?
Jawab dekho
Competitive inhibition. Dawa enzyme ke active site ke liye methanol se muqabla karti hai.
NCERT se jodo: NCERT Class 12 Chemistry — alcohols, phenols aur ethers (methanol ki zehreeli prakriti) aur Class 11 Biology — enzymes aur inhibition