Class 6 Science Chapter 8 NCERT Solutions Hinglish mein: A Journey through States of Water

Ye Curiosity (Reprint 2026-27) ke Chapter 8, A Journey through States of Water, ke end mein diye “Let us enhance our learning” ke saare 10 sawalon ke jawab hain, aur unke baad chapter ki Activity 8.6 aur Activity 8.11 ke jawab. Kai sawal tumhari raay poochhte hain, isliye unke jawab model answers hain: inhe apne shabdon aur apne examples se samjhao. Short notes: Chapter 8 notes.

Question 1

Which of the following best describes condensation? (i) The conversion of water into its vapour state. (ii) The process of water changing from a liquid into gaseous state. (iii) The formation of clouds from tiny water droplets. (iv) The conversion of water vapour into its liquid state.

Jawab: (iv) The conversion of water vapour into its liquid state. Option (i) aur (ii) dono evaporation ke baare mein hain. Option (iii) condensation ka nateeja hai, uska matlab nahi: baadal isliye bante hain kyunki water vapour chhoti boondon mein condense hoti hai.

Question 2

Identify in which of the given processes, evaporation is very important— (i) Colouring with (a) crayons (b) water colours (c) acrylic colours (d) pencil colours (ii) Writing on paper with (a) pencil (b) ink pen (c) ball point pen

Jawab:

• (i) (b) Water colours, aur (c) acrylic colours bhi. Dono paani mein mila ke lagaaye jaate hain, aur painting tabhi sookhti hai jab wo paani evaporate ho jaata hai. Crayons aur pencil colours kaagaz pe sookha rang chhodte hain, isliye kuch evaporate nahi hona hota.
• (ii) (b) Ink pen. Ink pen ki syahi mein zyadatar paani hota hai, aur likhawat tab sookhti hai jab wo paani evaporate hota hai; isi liye taazi syahi aasaani se phail jaati hai. Pencil sookhe nishaan chhodti hai, aur ball point pen ki ink gaadhi paste hoti hai jo lagbhag turant jam jaati hai.

Question 3

We see green coloured plastic grass at many places these days. Space around natural grass feels cooler than space around the plastic grass. Can you find out why?

Jawab: Asli ghaas zinda hoti hai. Uski jadein mitti se paani leti hain, aur uske patte lagaataar hawa mein water vapour chhodte rehte hain. Ghaas ke neeche ki geeli mitti se bhi paani evaporate hota hai. Evaporation patton, mitti aur unke paas ki hawa se garmi leta hai, isliye asli ghaas ke aas-paas thandak lagti hai. Plastic ki ghaas mein evaporate hone ke liye paani hi nahi hota. Dhoop mein wo bas garam hoti hai aur aas-paas ki hawa ko garam karti hai.

Extra: paudhon ke patton se water vapour nikalne ko transpiration kehte hain. Iske baare mein aage ki classes mein padhoge.

Question 4

Give examples of liquids other than water that evaporate.

Jawab: Hand sanitiser (haath pe ragadte hi gayab ho jaata hai), perfume (evaporate hote hi uski khushboo phailti hai), nail polish remover, petrol (petrol pump ke paas uski smell aati hai) aur injection se pehle nurse jo spirit skin pe lagaati hai. Ye sab paani se jaldi evaporate hote hain.

Question 5

Fans move air around, creating a cooling sensation. It might seem strange to use a fan to dry wet clothes since fans usually make things cooler, not warmer. Normally, when water evaporates, it requires heat, not cold air. What do you think about this?

Jawab: Pankha hawa ko thanda nahi karta; wo sirf use chalaata hai. Geele kapdon se paani evaporate hota hai to unke theek paas ki hawa nami wali, yaani water vapour se bhari, ho jaati hai. Ruki hawa mein ye nami wali parat wahin rehti hai aur evaporation dheema ho jaata hai. Pankha nami wali hawa ko lagaataar door le jaata hai aur sookhi hawa le aata hai, isliye paani tezi se evaporate hota rehta hai. Evaporation ke liye zaroori garmi kapdon aur kamre se aati hai.

Pankhe se thandak lagne ki wajah bhi yahi hai. Pankha paseene ka evaporation tez karta hai, aur evaporation hamari skin se garmi leta hai. Matlab pankha hume thandak aur kapdon ko sukhaana, dono ek hi wajah se karta hai: wo evaporation ko tez karta hai.

Question 6

Usually, when sludge is removed from drains, it is left in heaps next to the drain for 3–4 days. Afterward, it is transported to a garden or a field where it can be used as manure. This approach reduces transportation cost of the sludge and enhances the safety of individuals handling it. Reflect upon it and explain how.

Jawab: Naali se nikla taaza keechad (sludge) paani se bhara hota hai. Khuli hawa mein 3–4 din mein, dhoop aur hawa ki madad se, uska kaafi paani evaporate ho jaata hai.

• Kam transport kharcha: sookha sludge bahut halka ho jaata hai aur kam jagah leta hai, isliye use bagiche ya khet tak le jaane ke liye kam chakkar lagte hain.
• Zyada suraksha: sookha sludge tapakta, chhalakta ya phaavde se phisalta nahi, isliye kaam karne walon ko gande keechad ka kam sampark hota hai aur use load karna aasaan hota hai. Sookhne ke baad uski badboo bhi kam ho jaati hai.

Question 7

Observe the activities in your house for a day. Identify the activities that involve evaporation. How does understanding the process of evaporation help us in our daily activities?

Jawab (model): Evaporation wale kaam:

• dhule kapde sukhaana, aur rack pe dhule bartan sookhna;
• pocha laga farsh sookhna;
• nahaane ke baad baal sukhaana, aur paseena sookhna;
• khana banana, jab dal, chai ya kheer gaadhi karte waqt paani udd jaata hai;
• papad, mirch ya anaaj dhoop mein sukhaana;
• matke mein peene ka paani thanda rakhna.

Evaporation samajhne se roz madad milti hai. Hum kapde dhoop aur hawa mein phaila ke daalte hain taaki jaldi sookhein, geela farsh sukhaane ke liye pankha chalaate hain, matke mein paani thanda rakhte hain, garam farsh ya chhat ko thanda karne ke liye paani chhidakte hain, khane ki cheezein lambe time tak rakhne ke liye dhoop mein sukhaate hain, aur khana-paani dhak ke rakhte hain taaki wo sookhe nahi.

Question 8

How is water present in the solid state in nature?

Jawab: Ice aur barf ke roop mein. Jaise: Himalaya jaise oonche pahaadon pe barf, glaciers (barf ki vishaal nadiyan jo bahut dheere khisakti hain), North aur South Pole ke paas ki moti barf aur thande samudra mein tairte icebergs, bahut thandi jagahon pe sardi mein jam jaane wali jheelein, aur kuch toofanon mein girne wale ole. Jab ye ice aur barf pighalti hai, to paani nadiyon mein jaata hai, jo water cycle ka hissa hai.

Question 9

Reflect on the statement “Water is our responsibility before it is our right.” Share your thoughts.

Jawab (model): Paani har kisi ki zaroorat hai, isliye ye sabka haq hai. Par dharti ke paani ka sirf chhota hissa hi paudhon, jaanwaron aur insaanon ke kaam ka hai, kyunki zyadatar paani samudra mein hai. Paani use karne walon ki ginti badhti ja rahi hai, aur kai jagah pehle se paani ki kami hai. Agar hum paani barbaad karein ya nadiyon-jheelon ko ganda karein, to sabke liye, aaj ya aage, kaafi paani nahi bachega. Isliye paani maangne se pehle uski dekhbhaal hamari zimmedari hai: brush karte waqt nal band karo, leak theek karwao, sabzi dhone ka paani paudhon mein daalo, baarish ka paani ikattha karo, aur paani mein kabhi kachra mat phenko.

Question 10

The seat of a two-wheeler parked on a sunny day has become very hot. How can you cool it down?

Jawab: Seat pe thoda paani chhidko, ya geele kapde se pochho, aur thodi der ruko. Paani evaporate hote waqt seat se garmi leta hai, isliye seat thandi ho jaati hai. Ye evaporation ka cooling effect hai. Seat pe hawa karne se paani aur jaldi evaporate hoga. Agli baar gaadi chhaon mein khadi karo ya seat ko halke rang ke kapde se dhak do.

Activity 8.6: diagram poora karo

Book mein paani ki teen states boxes A, B aur C mein dikhaayi hain, aur unke beech ke badlaav arrows 1 se 4 se. Box A (Solid) aur arrow 1 (Melts, solid se liquid) pehle se bhare hain. Jawab:

• B: Liquid
• C: Gas
• 2 (liquid → gas): Evaporates
• 3 (liquid → solid): Freezes
• 4 (gas → liquid): Condenses

Activity 8.11: water cycle pe label lagao

Cloud, Lake, Ocean, River, Groundwater, Evaporation, Condensation, Rain aur Snow ko aise lagao:

• Ocean, Lake, River: jahan dharti ki sateh pe paani jama rehta hai.
• Evaporation: samudra (aur jheelon, nadiyon aur zameen) se hawa mein upar jaate arrows.
• Condensation aur Cloud: upar, jahan thandi hawa water vapour ko boondon mein badal ke baadal banati hai.
• Rain: baadalon se girti boondein. Snow: oonche pahaad ki choti pe.
• River: baarish ka paani aur pighli barf pahaadon se wapas samudra tak le jaati hai.
• Groundwater: wo paani jo zameen mein samaa ke uske neeche chalta hai.