CBSE > Class 12 > Chemistry | CBSE Board | Homework Help

Colloid is a state where a sute is parially soluble in rhe solvent.neither it become transparent nor is becomes opaque.no such as unvstance named colloid is known

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ANSWER

Why medicines are more effective in colloidal state??

Posted by Avantika Tayal 5 years, 10 months ago

CBSE > Class 12 > Chemistry

5 answers

Riya Rana 5 years, 10 months ago

Larger surface area

0Thank You

Shruti Jha 5 years, 10 months ago

Because they have large surface area and are therefore easily assimilated.

1Thank You

Ankit Singh 5 years, 10 months ago

Because colloidal are very fine particles and hence large suface area

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Killer Xmarty 5 years, 10 months ago

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Killer Xmarty 5 years, 10 months ago

?????

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ANSWER

Koi mujhe saral bhasha ka prayog karke why corrosion of iron is an electochemical phenomenon samjha do.

Posted by Shruti Jha 5 years, 10 months ago

CBSE > Class 12 > Chemistry

22 answers

Killer Xmarty 5 years, 10 months ago

Okk...shru

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Shruti Jha 5 years, 10 months ago

Kuch nahi Ankit!

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Ankit Singh 5 years, 10 months ago

Aree yahan kya hone laga

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Shruti Jha 5 years, 10 months ago

Otherwise no need.

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Shruti Jha 5 years, 10 months ago

Nahi!

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Killer Xmarty 5 years, 10 months ago

Mai bhi to huna frnd shru

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Shruti Jha 5 years, 10 months ago

Shru mat bolna, please! Shru mujhe sirf mere closest bulate hain. Mere friend gang.

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Shruti Jha 5 years, 10 months ago

Areey i got that!

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Killer Xmarty 5 years, 10 months ago

Yess...aur shru btaiye

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Ankit Singh 5 years, 10 months ago

I think u got it

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Ankit Singh 5 years, 10 months ago

Hawa pani rusting k case m hota h i mean moisture and oxygen

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Shruti Jha 5 years, 10 months ago

It's okay!

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Killer Xmarty 5 years, 10 months ago

Sry shru...glti ho gyi

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Killer Xmarty 5 years, 10 months ago

Acha...

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Ankit Singh 5 years, 10 months ago

Corrosion k nahi

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Ankit Singh 5 years, 10 months ago

Hawa pani rusting k antargat ata h

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Shruti Jha 5 years, 10 months ago

Hawa paani?

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Killer Xmarty 5 years, 10 months ago

Aur mai

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Shruti Jha 5 years, 10 months ago

Thanks Ankit!

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Killer Xmarty 5 years, 10 months ago

Ye hawa aur paani ki wajah se hota hai...

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Ankit Singh 5 years, 10 months ago

Q ki waha oxikaran prakriya hoti h jiske antargat vidhutadu (electron)rasayanic madham duara adaan pradan hota h

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Killer Xmarty 5 years, 10 months ago

Acha

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ANSWER

Why o-nitrophenol is more acidic than o-methoxyphenol ?

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Avantika Tayal 5 years, 10 months ago

Nitro group is electron widrawing grp ans so decreases the charge density on the benzene ring.it wi make oxygen partial positive in nature and hence become unstable and is more acidic.

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???. Pragati 5 years, 10 months ago

O-nitro phenoxide ion is more stable than O-methoxy phenoxide ion

2Thank You

ANSWER

Cbse foreign 2019 ka question paper provide ho skta h kya?

Posted by Shweta Lamba 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Shruti Jha 5 years, 10 months ago

It's also on mycbseguide itself.

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Gaurav Rawat 5 years, 10 months ago

From magj.cbse.nic.in

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ANSWER

Is conversion important in chemistry .....ylll mujse nahi ho rhe h ......sir dukhne lag gya ...

Posted by Falguni Soni 5 years, 10 months ago

CBSE > Class 12 > Chemistry

73 answers

Navneet . 5 years, 10 months ago

Are nhi vo nancy bhi sayad Lucknow se h??????? nd nothing more yr

1Thank You

Killer Xmarty 5 years, 10 months ago

????

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Killer Xmarty 5 years, 10 months ago

Aree kahan mili

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Shruti Jha 5 years, 10 months ago

Pragati got someone in company! Ham hi akele reh gaye?

1Thank You

Shruti Jha 5 years, 10 months ago

Sure na Aman? Cuz' trust me my organic is pathetic!

1Thank You

Killer Xmarty 5 years, 10 months ago

Yes

0Thank You

Killer Xmarty 5 years, 10 months ago

I am here

1Thank You

???. Pragati 5 years, 10 months ago

Where from Lucknow ??? me too

0Thank You

Aman Sharma 5 years, 10 months ago

Yrrr suno tum name reactions yad kr lo conversion aapne aap aa jaye ge apko

1Thank You

Ritwik Choudhary 5 years, 10 months ago

?? I'm too feeling sleepy .....

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Shruti Jha 5 years, 10 months ago

Bye bye guddies! Have a peaceful sleep.

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Nancy Verma 5 years, 10 months ago

Guys bye gn

1Thank You

Nancy Verma 5 years, 10 months ago

0Thank You

Ritwik Choudhary 5 years, 10 months ago

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Nancy Verma 5 years, 10 months ago

from Lucknow

1Thank You

Shruti Jha 5 years, 10 months ago

No NEET is on 3rd May!

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Ritwik Choudhary 5 years, 10 months ago

Ahh...I'm frm Rajasthan ....n you?

0Thank You

Shruti Jha 5 years, 10 months ago

Thanks a bagful , Ayaan! You peers are exceptionally understanding and supportive!

1Thank You

Ritwik Choudhary 5 years, 10 months ago

Good luck to you ayaan

0Thank You

Nancy Verma 5 years, 10 months ago

Kaha se ho rishika

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Ankit Singh 5 years, 10 months ago

Aree kisi ko ans atta ho to bahar bhi help kr do sabhi isi interface me h

0Thank You

Nancy Verma 5 years, 10 months ago

Gd 13 may ko hai na

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Shruti Jha 5 years, 10 months ago

I mean Nancy**

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Shruti Jha 5 years, 10 months ago

Haanji Nacy dala hain.

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Ritwik Choudhary 5 years, 10 months ago

Its very hard to manage neet n board simultaneously

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Ritwik Choudhary 5 years, 10 months ago

I'm preparing for neet as well

1Thank You

Nancy Verma 5 years, 10 months ago

Neet form dali ho kya shruti

0Thank You

Shruti Jha 5 years, 10 months ago

I will give Civil exam. Like after NEET will start preparing for IAS.

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Shruti Jha 5 years, 10 months ago

Ho jayega Ankit! Chillax.

0Thank You

Ankit Singh 5 years, 10 months ago

Hame to frequency or wave length range hi nahi learn ho raha ????

0Thank You

Shruti Jha 5 years, 10 months ago

Thanks buddy! It's not about being top or anything. Parents have high expectations. Isliye worried ho kuch bigde na bas. Rab meher kare!

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Shruti Jha 5 years, 10 months ago

Haha Ankit! Kuch keh nahi sakte.

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Nancy Verma 5 years, 10 months ago

Yr shruti tumko nid nhi aata mereko to 2 bjte bjte nid aane lgta

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Shruti Jha 5 years, 10 months ago

I have no other option Ayaan! Less time more thing to study. So..

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Ankit Singh 5 years, 10 months ago

Koi bat nhi yaha bhi top kar lena

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Shruti Jha 5 years, 10 months ago

Haha nor a topper! School me top karti thi so karti thi Boards me competition increases to next hi level.

0Thank You

Nancy Verma 5 years, 10 months ago

Gd topper

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Shruti Jha 5 years, 10 months ago

Main to 5 baje soti hu!

0Thank You

Nancy Verma 5 years, 10 months ago

Kbtk jgte ap log

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Shruti Jha 5 years, 10 months ago

Hahah Ayaan!

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Ritwik Choudhary 5 years, 10 months ago

0Thank You

Shruti Jha 5 years, 10 months ago

Haha, Rishika rock everyone shock!

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???. Pragati 5 years, 10 months ago

Padha Ayaan humne bhi

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Ritwik Choudhary 5 years, 10 months ago

So what you want to title ur biodata

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Shruti Jha 5 years, 10 months ago

Pragati, it's better but fever is still there and khaya bhi nhi kuch. Uhhh!

0Thank You

Shruti Jha 5 years, 10 months ago

I read Ayaan!

0Thank You

Shalini Singh 5 years, 10 months ago

Mere sath bhi...

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???. Pragati 5 years, 10 months ago

Shruti tabiyat kaise h

1Thank You

Shruti Jha 5 years, 10 months ago

Ab to Rab hi bachaye organic me!

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Nancy Verma 5 years, 10 months ago

Dear shruti aisa sbke sath hota hai judhata bhulta or at all sara hota

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Shruti Jha 5 years, 10 months ago

Aap sab ko to yaad bhi hota hain idhar to yaad bhi nahi hota kabhi kuch judta hain kabhi kuch nikalta kabhi kuch ghumta hain and all that jazzz! Ugh.

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Falguni Soni 5 years, 10 months ago

Good nancy ...mene to ek baar bhi nahi gye conversions

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Nancy Verma 5 years, 10 months ago

Oo sry mai glt smjh li?

1Thank You

Ankit Singh 5 years, 10 months ago

Mere sir ka kehna hai organic gazni ke Amir Khan ke zaisa h isliye bar bar dekho hazaar baar dekho i mean padho

1Thank You

Nancy Verma 5 years, 10 months ago

Mai ek se do bar kr li hu bt last mai krna pdega hi taki bhule na kuchbhi

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Shruti Jha 5 years, 10 months ago

Areey nancy aapne nahi prganic ne gol gol ghuma rakh kha h

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???. Pragati 5 years, 10 months ago

Nice nancy ☺

0Thank You

Nancy Verma 5 years, 10 months ago

Kya gumayi hu gol gol

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Falguni Soni 5 years, 10 months ago

Heheee

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Shruti Jha 5 years, 10 months ago

Haha! Kudh gol gol ghumke hame bhi gol gol ghuma rahi hain.

0Thank You

Nancy Verma 5 years, 10 months ago

Mai to conversion ko last mai krugi taki yad rhe

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Falguni Soni 5 years, 10 months ago

Chemistry mei to raat bhi nahi skte ....reactions gol gol gum rhi h

0Thank You

Shruti Jha 5 years, 10 months ago

Organic hi bachane wala bhi hain and dubane wala bhi.

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Shruti Jha 5 years, 10 months ago

Nancy truly said! And that's sucks a lot.

0Thank You

Nancy Verma 5 years, 10 months ago

Baat to shi hai jitna jldi yad ho rha utna hi jldi bhul ja rha?

0Thank You

Ankit Singh 5 years, 10 months ago

Raata maaar

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Shruti Jha 5 years, 10 months ago

Vahi na, bro! Isiliye i though to complete inorganic and physical pehle than shaanti se i will do organic.

0Thank You

Falguni Soni 5 years, 10 months ago

Yess correct miss shruti.....na jane kaisa aayega paper ...god knows

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Shruti Jha 5 years, 10 months ago

Same here Falguni. Dimaag stops working whenever i try to do organic!

0Thank You

Falguni Soni 5 years, 10 months ago

Time bhi nahi h 20 feb se paper hai

1Thank You

Nancy Verma 5 years, 10 months ago

Relax ho ke kro its imp

1Thank You

Falguni Soni 5 years, 10 months ago

Then how to do ...bro

1Thank You

???. Pragati 5 years, 10 months ago

Yes important to hai

1Thank You

ANSWER

Most important topics of (metallurgy) General principles and processes of isolation of elements in Chemistry?

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Ayush Chadhokar 5 years, 10 months ago

? ? ? ? ?

0Thank You

Ayush Chadhokar 5 years, 10 months ago

Chap chodh de poora

0Thank You

ANSWER

Ncert solutions of alcohol and ether

Posted by Anusheh Kashyap 5 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Ritwik Choudhary 5 years, 10 months ago

It is given in this app...

0Thank You

ANSWER

Glass(SiO2) only react with

Posted by Kushal Prajapat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Nancy Verma 5 years, 10 months ago

Hydrofluoric acid react with silica di oxide to produce silicantetrafloride and water

0Thank You

ANSWER

What is Beta elimination reaction?

Posted by Deepak Jaiswal 5 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Koi molar conductivity and limiting molar conductivity ki definition de do!

Posted by Shruti Jha 5 years, 10 months ago

CBSE > Class 12 > Chemistry

8 answers

Shruti Jha 5 years, 10 months ago

Thanks a ton, Nancy! It really did helped me.

0Thank You

Shruti Jha 5 years, 10 months ago

Thanks a ton, Tevar Jaat!

0Thank You

Nancy Verma 5 years, 10 months ago

Conductivity of electrolyte in unit concentration is known as molar conductivity while when concentration of electrolytes approachee zero known as limiting molar conductivity...hope this help you?

1Thank You

Tevar Jaat 5 years, 10 months ago

Molar conductivity- It is the the conductance of all ions reduced when 1 mole electrolyte is dissolved in unit volome. Limiting molar conductivity- It is defined as the sum of limiting molar conductivity of cations and anions.

1Thank You

Shruti Jha 5 years, 10 months ago

Thanks a ton!

0Thank You

Ritwik Choudhary 5 years, 10 months ago

Yes! I completed this chapter from NCERT yesterday that's why I refer you this.....

1Thank You

Shruti Jha 5 years, 10 months ago

Ye to same NCERT me diya hain but thanks a lot you, Rishika!

1Thank You

Ritwik Choudhary 5 years, 10 months ago

Molar conductivity increases with decrease in concentration as the total volume, V, of a solution containing one mole of electrolyte also increases. Upon dilution, the concentration decreases. When the concentration approaches zero, the molar conductivity of the solution is known as limiting molar conductivity

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ANSWER

Kya koi mujhe sun sakta hain? If yes. To please mujhe application of kohlrausch law samjha do! Badi mehebani hogi.

Posted by Shruti Jha 5 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Shruti Jha 5 years, 10 months ago

Ye to samjh aa gaya Nancy but i am asking about it's applications!

0Thank You

Nancy Verma 5 years, 10 months ago

This rule states that limiting molar conductivity of an electrolytes can be represented as the some of individual contributions of anion and cation of the electrolyte. Isko pdho syad smjh aaaye

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Killer Xmarty 5 years, 10 months ago

What??

0Thank You

Ritwik Choudhary 5 years, 10 months ago

Calculation of Degree of dissociation........ Calculation of solubility of sparingly soluble salt........ Calculation of Dissociation Constant for week electrolytes........ Calculation of Molar Conductivity for week electrolytes at infinite dilution

1Thank You

ANSWER

Surface chemistry me kya kya important hai

Posted by Shalini Singh 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Riti Bansal 5 years, 10 months ago

Adsorption , physiosorption and chemiosorprion and there examples and lock and key model

1Thank You

Shruti Jha 5 years, 10 months ago

Adsorption absorption, chemisorption physiosorption, applications, catalysis, enzyme catalysis, colloids and it's applications

1Thank You

ANSWER

Please help me in explaining forth floatation process.

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Muskaan Vig 5 years, 10 months ago

Like pine oil etc are also introduced into tank... So that suphide ores get more wet by oil and hence decreases their wettability by water......suspension in tank is aerated and froth (which contains impurities ) get produced...froth stabilizers like cresols etc are used to increase life of froth formed and it provides time to remove it easily....by this ore remains in tank and get concentrate.d ....

1Thank You

Muskaan Vig 5 years, 10 months ago

Froth flotation➞Principle: it is based on principle that suphide ores are preferentially wetted by oil and impurities are preferentially wetted by water........In a tank filled with water powered ore is put...and collectors

1Thank You

ANSWER

Hello mere Shondeshoo!!! Mujhe koi Salt Bridge ka function bata do apart from that it helps in completing the inner circuit and maintains the flow of current.

Posted by Shruti Jha 5 years, 10 months ago

CBSE > Class 12 > Chemistry

23 answers

Killer Xmarty 5 years, 10 months ago

Acha...meri jaan dogi

0Thank You

Shruti Jha 5 years, 10 months ago

Jii

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Killer Xmarty 5 years, 10 months ago

Ooh pdhti ho tbtk

0Thank You

Shruti Jha 5 years, 10 months ago

5 baje

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Killer Xmarty 5 years, 10 months ago

Okk..soti kb ho

0Thank You

Shruti Jha 5 years, 10 months ago

Padhai

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Killer Xmarty 5 years, 10 months ago

Acha...ky kr ri ho??

0Thank You

Shruti Jha 5 years, 10 months ago

Haanji thik hu.

0Thank You

Killer Xmarty 5 years, 10 months ago

Okk...thanks.aur thk ho

1Thank You

Shruti Jha 5 years, 10 months ago

Jiii haan

0Thank You

Killer Xmarty 5 years, 10 months ago

Maaf kr di

0Thank You

Shruti Jha 5 years, 10 months ago

It's totally okay?!

0Thank You

Killer Xmarty 5 years, 10 months ago

I will sry.. U didn't

0Thank You

Shruti Jha 5 years, 10 months ago

Why will i be sorry?

0Thank You

Killer Xmarty 5 years, 10 months ago

Hmm... Ur sry

0Thank You

Shruti Jha 5 years, 10 months ago

Hmm

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Killer Xmarty 5 years, 10 months ago

Okk. Ab nhi hoga sry

1Thank You

Shruti Jha 5 years, 10 months ago

Please Rameez stop it!

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Killer Xmarty 5 years, 10 months ago

Sry

0Thank You

Killer Xmarty 5 years, 10 months ago

Sry yr

0Thank You

Shruti Jha 5 years, 10 months ago

Thank you #tuli!

0Thank You

Killer Xmarty 5 years, 10 months ago

Hlwww

1Thank You

Utpal . 5 years, 10 months ago

It help in maintain electrical neutrality by providing anion and cation to respective half -cell

1Thank You

ANSWER

What is the formula of oxygen

Posted by Snehashis Kundu 5 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Akul Monga 5 years, 10 months ago

0Thank You

Pranshu Kesarwani 5 years, 10 months ago

O²

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Shruti Jha 5 years, 10 months ago

0Thank You

Lokesh Malav 5 years, 10 months ago

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ANSWER

Why phenol shows pink colour while it is white crystalline solid

Posted by Tushar Bhola 5 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Is mechanism of hydraboration oxidation of alkene (method of preparing alcohol) is in board syllabus?

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Muskaan Vig 5 years, 10 months ago

Simple mechanism that is given in ncert..

1Thank You

Tapan Pandey?? 5 years, 10 months ago

No, we have to represent only reactants adduct and product.

0Thank You

Muskaan Vig 5 years, 10 months ago

Yes.it is in our syllabus.

1Thank You

Vaishnavi Kalvakuntla 5 years, 10 months ago

0Thank You

ANSWER

Difference between allylic alcohol and vinylic alcohol?

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Muskaan Vig 5 years, 10 months ago

-C=C-C-OH..is allylic alcohol....and -C=C-OH is vinylic alcohol....

0Thank You

Tushar Bhola 5 years, 10 months ago

In allylic alcohols carbon atom is attached to side carbon of double bonded carbon atoms whereas in vinylic alcohols carbon atom is attached to double bond

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ANSWER

How O3 is thermodynamically unstable

Posted by Harshil Parashar 5 years, 10 months ago

CBSE > Class 12 > Chemistry

11 answers

Tushar Bhola 5 years, 10 months ago

Ozone is only stable at upper atmosphere but when it comes in down the atmospheric pressure exist due to this O3 breaks into O2 and [O](nascent oxygen) and nascent oxygen is unstable.

1Thank You

Vaishnavi Kalvakuntla 5 years, 10 months ago

When decomposed oxygen molecule and nascent oxygen is formed and it is unstable due to presence of nascent oxygen

1Thank You

Muskaan Vig 5 years, 10 months ago

Because it is an endothermic compound....breakdown of it into oxygen and nascent oxygen releases energy and entropy due to which ∆H is -ve and ∆S is +ve and thus ∆G becomes highly -ve i.e. ozone brekadown is more feasibel...and ozone is thermodynamically unstable...

2Thank You

Meghna Sharma 5 years, 10 months ago

??????????

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Killer Xmarty 5 years, 10 months ago

0Thank You

Killer Xmarty 5 years, 10 months ago

K ya yrr

0Thank You

Harshil Parashar 5 years, 10 months ago

None of ur buisness?

1Thank You

Killer Xmarty 5 years, 10 months ago

Because of bond dissociation enthalpy

1Thank You

Killer Xmarty 5 years, 10 months ago

How r u

0Thank You

Harshil Parashar 5 years, 10 months ago

Plz give me ans.

1Thank You

Killer Xmarty 5 years, 10 months ago

Hiii

0Thank You

ANSWER

How to start ???where to start and what should i study the most in chemistry ...plz..kindly help me with ur suggestions ...chemistry...

Posted by Yipu Riba 5 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Tushar Bhola 5 years, 10 months ago

Total 12 test in our syllabus

0Thank You

Tushar Bhola 5 years, 10 months ago

Aldehyde and ketones most important chapter and all naming rxn and conversions are important all chemical test and 'diazotization' these are very important

0Thank You

Muskaan Vig 5 years, 10 months ago

Organic chem from NCERT first .....from first three do NCERT numericals .....max exam comes from organic and back exerxise ncert ques ans..

1Thank You

Suraj Kumar 5 years, 10 months ago

Only read ncert with deep

1Thank You

ANSWER

Is metallurgy chapter of chemistry a hard chapter?

Posted by Gaurav Rawat 5 years, 10 months ago

CBSE > Class 12 > Chemistry