Kanon ke beech doori aur gati

Gas ko dabaana

Bina sui waali syringe ka plunger bahar kheencho, khule sire ko angoothe se band karo aur plunger dheere dheere andar dabaao: andar ki hawa kam jagah gherne lagti hai. Gas ke kanon ke beech kaafi jagah hoti hai, aur daab unhe paas la sakta hai. Chhodte hi kan phir fail jaate hain aur plunger ko waapas dhakel dete hain. Yahi paani ke saath karo to plunger lagbhag nahi hilta: paani lagbhag incompressible hai, kyunki uske kan pehle se paas paas hain.

Liquid mein jagah

Ek glass aadha paani se bharo aur star par nishaan lagaao (A). Do chammach cheeni daalo aur naya star nishaan karo (B), phir cheeni ghulne tak hilaao aur phir nishaan lagaao (C). Cheeni daalte hi star badha, par ghulne ke baad wo B se thoda neeche aa jaata hai, kyunki cheeni ke kan paani ke kanon ke beech ki jagah mein chale jaate hain. Namak aur glucose bhi aisa hi karte hain. Ret nahi ghulti: uske kan neeche baith kar apni jagah gherte hain, isliye star badhta hai aur badha hi rehta hai.

Solid mein jagah

Solid ke kan tagde aakarshan se apni jagah par jude aur kase hote hain, phir bhi unke beech chhoti si jagah rehti hai. Ye jagah hawa se bhari nahi hoti; isme kuch bhi nahi hota. Jagah solid mein sabse kam, liquid mein thodi zyaada aur gas mein sabse zyaada hoti hai. ‘Kan’ shabd pradooshit hawa ke dhool kanon ke liye bhi bola jaata hai, jinhe suspended particulate matter kehte hain, par har dhool kan khud un kahin chhote kanon ki bahut badi sankhya se bana hai jinse saara padaarth bana hai.

Kan chalte rehte hain

Paani ke glass mein potassium permanganate ke kuch daane daalo. Daanon se gulaabi dhaariyan nikalti hain, aur kuch der mein poora glass ek jaisa gulaabi ho jaata hai: chalte hue paani ke kan har daane se kan kheench kar unhe poore liquid mein failaa dete hain. (Kanon ke is tarah failne ko vaigyanik diffusion kehte hain.) Is chemical ko sirf chammach ya spatula se chhuo, haath se kabhi nahi. Garam, kamre ke taapmaan aur barf jaise thande paani ke teen glass mein rang garam paani mein sabse tez aur thande mein sabse dheere failta hai, kyunki garmi se kan tez chalte hain. Ret jaise kuch padaarthon ke kan itni zor se jude hote hain ki paani unhe nahi kheench paata, isliye ve nahi ghulte.

Khushboo ka safar

Kamre ke ek kone mein agarbatti jalaao. Pehle khushboo sirf paas mein aati hai, par jald hi poore kamre mein mehsoos hoti hai. Hawa ke kan hamesha chalte rehte hain; ve khushboo ke kanon se takraakar unhe poore kamre mein le jaate hain. Isi tarah perfume, phoolon ya rasoi mein pakte khaane ki khushboo hum tak pahunchti hai.

Saabun aur tel

Kapde dhone mein bhi kanon ka ye svabhaav kaam karta hai. Tel ke daag waale kapde saabun se dhone par saabun ke bahut se kan kapde par lage har tel ke kan ko gher lete hain. Saabun ke kan ka ek sira tel se judta hai aur doosra paani se milta hai, isliye tel kapde se uthkar dhul jaata hai.

Ye kyun zaroori hai

Kanon ke beech ki jagah samjhaati hai ki gas cylinder mein itni gas kaise aati hai aur ek chammach cheeni kaise gaayab si ho jaati hai, aur chalte kan samjhaate hain ki khushboo hum tak kyun pahunchti hai aur kapde saaf kaise hote hain. Teen avasthaayein padaarth ki avasthaayein mein hain, aur padaarth kis cheez se bana hai, ye padaarth kis cheez se bana hai? mein. Har sawaal ke jawaab Chapter 7 ke NCERT solutions mein hain; poore Chapter 7 ke notes bhi dekho.