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

Hmm., Are organic agr sari ni aati h...to jyada mt rattna....koi ek ya do interested chapter pdho achcje s...jo phle s aata b ho..jyada hard kuch b ni h!☺??...

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Ravi Giri 5 years, 11 months ago

Bhai kux nhi h simple h

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Vinay Gautam 5 years, 11 months ago

Hme kuch nhi btate school wale

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Wlcm...sis...??

1Thank You

Vinay Gautam 5 years, 11 months ago

Thanx mannat

1Thank You

Gopal Mishra 5 years, 11 months ago

School se. Set nhi btaya gya ky bhia? Hmlog ko to bt schoil wale

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Bs...viva questionss.pd loo...ek baar...

1Thank You

Vinay Gautam 5 years, 11 months ago

Mujhe physical chem puri aati h bt what about organic yr im very tensed for organic chemistry

1Thank You

Vinay Gautam 5 years, 11 months ago

Kuch to aata hi h bilkul ganwar nhi hu

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Yes...titration too easy hai vo to kr hee loo....

1Thank You

Shivani Thakur 5 years, 11 months ago

Koi b 2easy chapter s prep.kro jaise k polymer nd chem.in every day life...at this moment...or kuch jyada ho ni payega...examinar ko bta dena k project se alag ye pdha h...nd gi through the file properly ??...nd ya learn some imp.salt analysis tests nd method of titration also..kuch chote bt deep ques.pooche jate h!?

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Shivani Thakur 5 years, 11 months ago

Ysss

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Kuch bhi nii atta kya apko??

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Vinay Gautam 5 years, 11 months ago

Is here anyone to help me plz

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ANSWER

Mechanism of (CH3COO)2Pb

Posted by Navneet Yadav 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

(CH3COO)2Pb

Posted by Navneet Yadav 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Please gives some question that in your school external asked

Posted by Shriyash Verma 5 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Shivani Thakur 5 years, 11 months ago

Monomers of polymers like nylon-66....nylon26...nylon6...,decron or terelen.

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Shivani Thakur 5 years, 11 months ago

Diff.b/w antiseptic nd disinfectant.

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Shivani Thakur 5 years, 11 months ago

Whixh is less basic -aniline or ethanamine??...state the reason.

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ANSWER

Gauss law

Posted by Mûdìţ Çhàûdháry 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 11 months ago

Gauss’s Law

According to Gauss’s law, the total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The total electric flux through a closed surface is zero if no charge is enclosed by the surface.

Gauss’s law is true for any closed surface, no matter what its shape or size.
The term q on the right side of Gauss’s law includes the sum of all charges enclosed by the surface. The charges may be located anywhere inside the surface.

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ANSWER

Sir chemistry most important. Question bata do jo as Sakta ha

Posted by Shashi Kant 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Aayush Singh 5 years, 11 months ago

Phenol to picric acid

1Thank You

ANSWER

1nm is equal to

Posted by Parwinder Kaur 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Akanksha Kumari 5 years, 11 months ago

1nm is equal to 1 ×10^-9 m

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ANSWER

Write the preparation of glucose

Posted by Tsetan Dolma 5 years, 11 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What are coupling reactions

Posted by Shyam Pandey 5 years, 11 months ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 5 years, 11 months ago

Reactions involving retention of Diazo group are coupling reaction. Arenediazonium salts reacts with highly reactive aromatic compounds such as phenols and amines to form brightly coloured azo compounds, Ar-N=N-Ar. The azo products have extended conjugate system having both the aromatic rings joined by N=N bonds. Mostly such compounds are used in the manufacture of dyes, as this compounds are coloured in nature. For example benzene diazonium chloride reacts with phenol to give an orange dye i.e. p-Hydroxyazobenzene.

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Harshit Bhardwaj 5 years, 11 months ago

Reaction of phenol with benzene diazonium chloride and reaction of aniline with benzene diazonium chloride in which azo dye is formed are known as coupling reactions

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ANSWER

Out of nacl and agcl which shows frenkel defect and why

Posted by Nafeesa Burhan 5 years, 11 months ago

CBSE > Class 12 > Chemistry

6 answers

Akanksha Kumari 5 years, 11 months ago

AgCl

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Shivani Thakur 5 years, 11 months ago

Agcl..sis due to a great difference in their sizes

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

AgCl show Frenkel defect becoz of the large difference in the size of Ag+ and Cl- ion.

1Thank You

Shivani Thakur 5 years, 11 months ago

Solid,state

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Shivani Thakur 5 years, 11 months ago

It's out of syllabus...

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Mohan Singh 5 years, 11 months ago

Agcl

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ANSWER

The density of a gas is 2g/L at 1 atm and 27ºC. The density of the same gas at 2 atm and 127ºC is--- 1) 3g/L 2) 1.33g/L 3) 2 g/L 4) 1g/L

Posted by Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

CBSE > Class 12 > Chemistry

44 answers

Shivani Thakur 5 years, 11 months ago

Thanxxxx??????

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Rohan Řąjpůť 5 years, 11 months ago

bhen bola toh Maine sample paper kro

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Rohan Řąjpůť 5 years, 11 months ago

?????

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Shivani Thakur 5 years, 11 months ago

Hmmmmm..,..????.....bt most of the times jroort hoti h...aisi helps k bhi....thankuuuuuh ☺????darshaana....

1Thank You

Shivani Thakur 5 years, 11 months ago

Ysss bt thanxx for it also...??...i myself know ki concentration achci ni bn pa rhi h..?

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

ya I agree with Darshana apki problem aap khud analyse kro... by doing maximum questions

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

? ? ? ? bio aur mai never. tu he DE bura sa practical .. aaj tak smjh ni aaya pta nhi kya cut krte ho aur microscope mein itne dheeyan se dekhte ho. ? ? ?

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

mind se slip hona means ke concentration low hai usay increase karo... confusion dur rakho... minimum but quality ke question karo bus yahi bol skte hoo... becoz mai utni capable ni hua ke kisi ko advice de sko. hop u understand. ?

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Shivani Thakur 5 years, 11 months ago

Yrrrr...hlp me pls....!???????...bhot tension ho rhi h!!

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

yrr mai kya advice dongi kisi ko mera khud bura haal hai .

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

vese so kr aaya kr na ghr se class mein soye ga toh date bhule ga he na. ?

1Thank You

Shivani Thakur 5 years, 11 months ago

Jo pdhte h..lgta h....mind s slip ho gya...?nd 90+ b score ni ho pa rha h..yr ismein!!?

2Thank You

Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

kyun tune dena hai mera bio ka practical. ????

1Thank You

Shivani Thakur 5 years, 11 months ago

Darshaana yr pls help me in physics na...yr ...how should i cover it up.....i m in a great fear ? of it.....kaise hoga..imean

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Shivani Thakur 5 years, 11 months ago

Ohkkk...darshana bt

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Shivani Thakur 5 years, 11 months ago

,??

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Rohan Řąjpůť 5 years, 11 months ago

? ? ? main na 23 and 24 ko humara physics smjh ra Tha. ? ? ? pcb walo ka hai uss din.. accha hua bta diya thanks. vese tera bio kab hai? ?

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

topper hai vo pcm ka. yes 95+ toh nhi but 90+ jaata hai .

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

our physics is on 23, 24,25,26. 23 and 24 for pcb grp. and 25 and 26 for pcm grp. .

2Thank You

Shivani Thakur 5 years, 11 months ago

Nd how r u preparing....vaise tumara score to95+hi hoga..i thnk!!!?!...right na?!??

2Thank You

Shivani Thakur 5 years, 11 months ago

Physics kb h.??...?????

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

fir mera. Chemistry hai

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Rohan Řąjpůť 5 years, 11 months ago

ni ni abhi ni hua Cs hai pehla mera.. ? ? ?

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Vinay Gautam 5 years, 11 months ago

Ek dm shi m to bs physics hi pdhti rhti hu

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Shivani Thakur 5 years, 11 months ago

Abi theory ka kya...jo pdho aisa lgta h...bhool gye..kuch b ni aata ??????☹️.......bht buri conditions h....nd uppar se sirf ek hi holiday h...?

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Shivani Thakur 5 years, 11 months ago

Haaaaan practicals to up to the mark hain.....??☺???? ..uski tension ni h....

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Vinay Gautam 5 years, 11 months ago

Mera bhi nhi ho pa rha bt practical to acha ho gya

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Shivani Thakur 5 years, 11 months ago

Yrrrr...aap logon ka physics ka hua...???..mera bilkul accha score ni ho pa rha h....what should i do??

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Shivani Thakur 5 years, 11 months ago

Yssss darshana u are right sis.??

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Shivani Thakur 5 years, 11 months ago

U got the answer bt phr b it's 3g/l?

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Vinay Gautam 5 years, 11 months ago

Bs bs

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Rohan Řąjpůť 5 years, 11 months ago

? ? ? personally bta dunga. exam ke tym. ?

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

nd ya answer is 3g/L.

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

it's not from 12th... . it was in neet mock question papers. chapter name is states of matter. (11th class) Aur abb koi ye mt bolna ke 12th ka pucho... becoz I think we all are preparing for competitive level.

1Thank You

Rajat Barwar 5 years, 11 months ago

I think the answer is 3 g/L.. By using ideal gas equation. But ye 12th ke kis chapter ka ques. hai??

1Thank You

Shivani Thakur 5 years, 11 months ago

Siss....? i vl try now....maine pdha ni shyd properly,..

2Thank You

Shivani Thakur 5 years, 11 months ago

Okkkkk

2Thank You

Vinay Gautam 5 years, 11 months ago

than solve it rohan

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

aata hai mujhe ye.

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

????

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

Rohan Rajput... apki mind ki range se bahar hai so try na kro toh accha hai Verna Jo dimag hai vo bhe khtm ho jayega. ?

2Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

kesa hai ye question. ?

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Ďãřşháñăã Yadav ? ? ? 5 years, 11 months ago

actually sis... Read the second line again... it's clear that we have to find density of the same gas at 2 atm and 127ºC.

2Thank You

Shivani Thakur 5 years, 11 months ago

What v have to find in it...u should clear it in????

3Thank You

ANSWER

What can I do all name reaction learned

Posted by Deependra Singh 5 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Aayush Singh 5 years, 11 months ago

It will just helps u to bring out conversion. And if are not able to remember, then don't worry about it. 2 marks lekar kya ukkhad lega.

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Shivani Thakur 5 years, 11 months ago

Almost in one week or 10days sb learn ho jayengi....bt only 2 ina day...nd proper rivison

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Shivani Thakur 5 years, 11 months ago

Learn two reacxns daily by writing on ur n.b nd revise it twice in a day....

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ANSWER

Hydrometullurgy of zinc metal is not possible.....?

Posted by Mannat Kaur Khalsa?? 5 years, 11 months ago

CBSE > Class 12 > Chemistry

66 answers

Shivani Thakur 5 years, 11 months ago

And i thnk really achchi hi h.....best of luck for future...??

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Shivani Thakur 5 years, 11 months ago

Aapne rohann....bhai ??...that physics is ur love.?.....anyways....ye sach h...jiska physics achcja ho..vo hnedha khush rheta h...??????.....

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Acha....chlo ok yr...bye....

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Hmm

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Rohan Řąjpůť 5 years, 11 months ago

? ? ? accha

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Ye...he..pehle...aise..boy hai...yahan pr jisse mai..itni...baat krti hu...vrna...mai boys se zada baat nii krti...

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

bhen kisne bola tujhe ke meri physics acchi hai ??

2Thank You

Aayush Singh 5 years, 11 months ago

Reduction potential of Zn > that of H

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Rohan Řąjpůť 5 years, 11 months ago

behn kisne bola tujhe ke meri physics acchi hai. ??

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

1Thank You

Shivani Thakur 5 years, 11 months ago

Laughing all the times nd remains happy at all?☺??????

1Thank You

Shivani Thakur 5 years, 11 months ago

???? vry gud...kinna achcha insan h..tension k to wjah hi mi h..inke pass.or si hi h...physics to vaise b achchi h na?....kitna achcha ho agr sb aise bn payein!☺???

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Koi nii jii

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Mannat Kaur Khalsa?? 5 years, 11 months ago

☺

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Rohan Řąjpůť 5 years, 11 months ago

mai itna online nhi rehta.

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

???

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

jii

0Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Mujhe lga bde busy hoo....haanji bolo ....bool ke gayb ho gye...

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Acha jiii....

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Rohan Řąjpůť 5 years, 11 months ago

maths. wao

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

rone ki vajha nhi hai na

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Math hai...18 ko

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Bdi..hssi arii apko....

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

? ? abb next Konsa hai

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Shivani Thakur 5 years, 11 months ago

Ohkkkkk..mannat thx

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Very gud?....

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Rohan Řąjpůť 5 years, 11 months ago

mannat yrr mai question bhul gya tha. ? ? ? ? mai physics section mein iss question ko search kar ra Tha. ? ? ?

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Darshaana ke kissi quest ko ans kr ke waha baat kr lo usse....

1Thank You

Shivani Thakur 5 years, 11 months ago

Darshaana aap bataiye..pls....how should i cover my physics ??

0Thank You

Shivani Thakur 5 years, 11 months ago

I m in a great ? fear of phsics.....!!!...how it would be covered?

0Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Rohan jii bdi chetii aa gye tusi?

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Rohan Řąjpůť 5 years, 11 months ago

congratulations mannat.. ?..

1Thank You

Shivani Thakur 5 years, 11 months ago

That's gud....yrr congrats once again.,??......bt muje b help kro na yr sb pls...mera physics m 90 b score ni Aa rha h?☹️?!!

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Vinay Gautam 5 years, 11 months ago

Wow yr congrats

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Yr......out of 70...60 above to aa hee jayenge...☺?

1Thank You

Shivani Thakur 5 years, 11 months ago

Congratulations mannat??...approx kitna score rhega....?

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Bhen organic zada thi....

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Vinay Gautam 5 years, 11 months ago

What type of ques were there

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Mannat Kaur Khalsa?? 5 years, 11 months ago

Yr exam acha hua aaj ka??

1Thank You

Rohan Řąjpůť 5 years, 11 months ago

Haan g bolo. ?

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Rohan are u here??

1Thank You

Shivani Thakur 5 years, 11 months ago

Ur wlcom??

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Thnxxx shivani

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Shivani Thakur 5 years, 11 months ago

Chem. Prr-boards k liye!!

1Thank You

Shivani Thakur 5 years, 11 months ago

Mannat kaur khalsa.?

2Thank You

Shivani Thakur 5 years, 11 months ago

Best of luck....for today?

2Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Nice yr...changa..ji ...bye...take care☺

0Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

? ? PREBOARDs ko chori boards pr focus kro

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

accha tha 92% thi

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

mera bht first Cs hai

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

final *

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Kaise hue..preboards....?....mere bhi 20 se practicals hai...1st cs..ka hai...

0Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

changa g...feedback de dena kesa gya. ? gud n8 best of luck. ?

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

haan g kab ke ho gye... abb toh 20 se ginal practicals hai

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Apke preboards ho gye?

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Thnx...yr.... ?

0Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

woo chem... Best of luck yrr. ?? acche se kariyo.

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Avg hua...

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Âññü Šîñg*H??? 5 years, 11 months ago

Great ??

0Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Kl chem ka hai ab

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

theek theek kya hota hai ya toh accha bolo ya bura

1Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Yr...theek theek hua....

0Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

BTW how was ur PREBOARDs

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Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

no need ???

2Thank You

Mannat Kaur Khalsa?? 5 years, 11 months ago

Thnxx

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

becoz cu displaced from solutions of Cu2+ ion by more active metals. on the other hand Zn can also be displaced from solution of Zn2+ ion by a more reactive metal than it, but then readily react with water forming their corresponding zinc ions and evolve hydrogen gas.

1Thank You

ANSWER

Does anybody have observations of chemistry experiment of separation of coloured components

Posted by Chirag Madan 5 years, 11 months ago

CBSE > Class 12 > Chemistry

6 answers

Shivani Thakur 5 years, 11 months ago

Okkk....kiran

0Thank You

Vinay Gautam 5 years, 11 months ago

You can get them on internet

0Thank You

Shivani Thakur 5 years, 11 months ago

Which components..u r talking about?

1Thank You

Řøhăň Řąjpůť ✌️✊ 5 years, 11 months ago

Yup bro

0Thank You

Shivani Thakur 5 years, 11 months ago

Clearly bolo...what do u wasnnna say?

0Thank You

Ankit Mishra 5 years, 11 months ago

Nhi pta

0Thank You

ANSWER

Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide di- tert-butyl ether cannot be prepared by this method.Explain

Posted by Amol Gùpta 5 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanjeet Kumar Pal 5 years, 11 months ago

Because the reaction follow SN2 mechanism and due to more steric hindrance elimination reaction takes place instead of substitution and the product thus formed will be ALKENES.

1Thank You

ANSWER

write the rate of reaction 3A→2B+C

Posted by Unknown Name 5 years, 11 months ago

CBSE > Class 12 > Chemistry