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

Egg yolk – in which the main emulsifying agent is lecithin. In fact, lecithos is the Greek word for egg yolk. Mustard – where a variety of chemicals in the mucilage surrounding the seed hull act as emulsifiers.

1Thank You

Go Pi 8 years ago

Got It . See yiu people after boards

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ANSWER

Why boiling point of ethanol is greater than methoxymethane??

Posted by Anurag Yadav 8 years ago

CBSE > Class 12 > Chemistry

3 answers

Go Pi 8 years ago

And yeah. In the latter case due to hydrophibic part hydrogen bond doesn't take oace (hinderance)

3Thank You

Go Pi 8 years ago

I alcohols. amine over right. ?

0Thank You

Go Pi 8 years ago

Hydrogen bonding

1Thank You

ANSWER

Cl(c6h6)cl+nash=A

Posted by Pallavi Singh 8 years ago

CBSE > Class 12 > Chemistry

7 answers

Go Pi 8 years ago

Where did she go

0Thank You

Go Pi 8 years ago

NaOH

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Anurag Yadav 8 years ago

What is nash here!????

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Go Pi 8 years ago

No wait you may get those 2 Cl being taken by OH . so OH(C6H5)OH

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Go Pi 8 years ago

Anyway the condition should be NaOH @623k 300atm then HCl you with get p-chloro phenol

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Go Pi 8 years ago

Arenes does undergi nuclephilic substitute in normal condition

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Go Pi 8 years ago

I dont think the reaction shall occu

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ANSWER

Why Zno turn to yellow

Posted by Divya Goyal 8 years ago

CBSE > Class 12 > Chemistry

5 answers

Naresh Vishwakarma 8 years ago

#Ans :- On heating Zno due to metal excess defect extra Zn+ ions form which result in yellow colour.

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Anurag Yadav 8 years ago

And also +2e-

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Anurag Yadav 8 years ago

Zno------(heat)-------Zn^2+ + 1/2 O2

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Go Pi 8 years ago

Write that eq. too

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Go Pi 8 years ago

Because Oxygen escapes

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ANSWER

Haloarenes are much less reactive than haloalkanes towards nucleophilic substitution reaction,why?give reason

Posted by Vaibhav Singh Vaibhav 8 years ago

CBSE > Class 12 > Chemistry

3 answers

Go Pi 8 years ago

What? #anurag WA i saying the answer to you :/ no I guess

0Thank You

Anurag Yadav 8 years ago

I have already learnt ,gopika....☺️

0Thank You

Go Pi 8 years ago

Due to partial double bond due to resonance . Bond length of C-X become less hence difficult to break. Electron rich necleopile cannot easily attack electron rich ring. X is attached to sp2 hyb. carbon while in haloalkanes Its to sp3

1Thank You

ANSWER

Koi crystal field theory samjha sakta hai kya mujhe pls

Posted by Nishtha Pandya 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Anurag Yadav 8 years ago

Crystal Field Theory (CFT) is a model that describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbours).

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ANSWER

Example of non essential and essential amino acid

Posted by Mridul Gupta 8 years ago

CBSE > Class 12 > Chemistry

6 answers

Mridul Gupta 8 years ago

Thanks

1Thank You

Go Pi 8 years ago

Download ncert books from place store

0Thank You

Go Pi 8 years ago

Valine*

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Go Pi 8 years ago

Ess. Alanine and Glutamine Non-ess. VAL and histidine

0Thank You

Mridul Gupta 8 years ago

Dont have a book only notes

1Thank You

Go Pi 8 years ago

Its in the book right. Table.

0Thank You

ANSWER

IE1<IE2 in gp 15 why

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Mridul Gupta 8 years ago

???

1Thank You

ANSWER

Benjoic acid

Posted by Sasneh Singh 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Go Pi 8 years ago

C6H5COOH

0Thank You

Mridul Gupta 8 years ago

Benzoic acid

1Thank You

ANSWER

Difference between rna and dna

Posted by Manmohan Prasad 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Go Pi 8 years ago

Uracil in Rna, DNA is double stranded, DNA is more stable,DNA contains information for protien synthesis.

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Anurag Yadav 8 years ago

Dna is double helix structure whereas rna is single helix. Dna contains thiamine whereas rna contains urecil base. Dna is having deoxyribose sugar whereas rna is having ribose sugar..

1Thank You

ANSWER

XeO3 structure

Posted by Nabam Lucky 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Anurag Yadav 8 years ago

Pyramidal

1Thank You

ANSWER

Why I.E 1<I.E2 in gp.15 elements

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why I.E1 <I.E 2 in gp.15 elements

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Many of the transition elements are known to form interstitial compounds. Why

Posted by Shubhangi Kulshreshtha 8 years ago

CBSE > Class 12 > Chemistry

9 answers

Shivam Kaushal 8 years ago

Because small atoms like C,H,N are trapped at interstitial sites due to this they have high melting and boiling pt.

0Thank You

Go Pi 8 years ago

Yeah dude. I said right. They said the same. you're RIGHT

0Thank You

Anurag Yadav 8 years ago

I have checked the same ans which I gave is given on net

0Thank You

Go Pi 8 years ago

Your answer I Correct anyway.

0Thank You

Go Pi 8 years ago

I just said it. Ill check It too.

0Thank You

Go Pi 8 years ago

Anurag you need to write what I've said I guess. Because i gave a similar answer as you said, my mama just stricken it off. Check in net na.

0Thank You

Anurag Yadav 8 years ago

Is my ans wrong????

1Thank You

Go Pi 8 years ago

They are brittle. They conduct (good conductors). They have high M.P and B.P. Chemically inert

1Thank You

Anurag Yadav 8 years ago

Transition metals react with elements such as hydrogen, carbon, nitrogen, boron etc. to form interstitial compounds. As vacant spaces of the transition metals are filled up by small atoms, these compounds are hard and rigid. ... Steel and cast iron are the interstitial compounds of iron which are formed with carbon.

2Thank You

ANSWER

Why I.E 1 <I.E 2in gp. 15 elements

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why I.E 1<I.E 2 in gp. 15 elements

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Chemistry

7 answers

Go Pi 8 years ago

Leave it then. aSK In answrr section itself

0Thank You

Ramanjit Kaur 8 years ago

Phir show nhi ho rha

0Thank You

Anurag Yadav 8 years ago

Uninstall karke dobara install kr lo

0Thank You

Ramanjit Kaur 8 years ago

Anurag mujhe bta I.E1<I.E2 gp.15 elements mein kyu hoti hai??

0Thank You

Ramanjit Kaur 8 years ago

Maine question likha tha 2 times pr pta nhi kyu show nhi ho rha

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Ramanjit Kaur 8 years ago

Pta nhi show nhi ho rha

0Thank You

Anurag Yadav 8 years ago

What's this ramanjit no que. Is there???~

1Thank You

ANSWER

If I failed in one sub then what will happen

Posted by Ajay Kewat 8 years ago

CBSE > Class 12 > Chemistry

6 answers

Anurag Yadav 8 years ago

Nhi

0Thank You

Ramanjit Kaur 8 years ago

Mera question show kyu nhi ho rha tum logo ko show ho rha hai my question??

0Thank You

Anurag Yadav 8 years ago

Cool down ,chill nd prepare for next exam bhai.....

1Thank You

Go Pi 8 years ago

You have to go for compartment exam. Or repper next year. go aND Google na please.

0Thank You

Go Pi 8 years ago

I request not to spread negativity. You CAn rely on Google. iN Quora they give every single details . Please don't do like this

0Thank You

Anurag Yadav 8 years ago

No idea bro!!!

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ANSWER

Which cell is used for hearing aids?

Posted by Nikhil Thakur 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Anurag Yadav 8 years ago

Mercury cell

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Go Pi 8 years ago

Mercury cell

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ANSWER

I am prepare from ncert& all of you prefere which book

Posted by Yaduvanshi Yaduvanshi 8 years ago

CBSE > Class 12 > Chemistry

3 answers

Go Pi 8 years ago

Ncert. And nothing else.

0Thank You

Anurag Yadav 8 years ago

ABC of modern chemistry as a reference. And ncert is above alllll

0Thank You

Ramanjit Kaur 8 years ago

All in one

1Thank You

ANSWER

How is the presence of SO2 detected

Posted by Deepak Goyal 8 years ago

CBSE > Class 12 > Chemistry

6 answers

Anurag Yadav 8 years ago

Ya u have given

1Thank You

Go Pi 8 years ago

My first answer are wrong. I reffered the book. See I'd given th reference

2Thank You

Anurag Yadav 8 years ago

K gopika I think we should give a qualitative idea when these type of questions r asked because it is asked for detection....h n

0Thank You

Go Pi 8 years ago

It decolourises KMnO4 PG 188. Last

0Thank You

Anurag Yadav 8 years ago

By adding it into KMNO4 ......KMNO4 turns colourless ..

1Thank You

Go Pi 8 years ago

Sulphorous acid is former when this is passed through water

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ANSWER

I m from Delhi In 12th class science.So if I learn last learn last year paper .then should learn all India quest. Paper or Delhi question paper

Posted by Mr Fardeen Ahmed 8 years ago

CBSE > Class 12 > Chemistry

10 answers

Anurag Yadav 8 years ago

They were gud because they were easy??

0Thank You

Go Pi 8 years ago

Anurag I read Delhi papers along for physics also first chemistry(along with outside and foreign )yeah they were good

1Thank You

Lakshay Yadav 8 years ago

☺☺☺???

1Thank You

Anurag Yadav 8 years ago

But physics papers I found easier of delhi sets

0Thank You

Lakshay Yadav 8 years ago

Delhi cbse is hard then all india

0Thank You

Go Pi 8 years ago

Being outside delhi I generally prefer Delhi. They are of more standard I guess. Only a few question are similar. balance all are totally Different.

0Thank You

Anurag Yadav 8 years ago

It depends on u, if u r frm delhi then read delhi qp.,bt there is not much diff. Between both OD nd delhi sets......

0Thank You

Go Pi 8 years ago

I asked the same question. People were like read both. According to me try as much as yu can. bUt only after ncert. since You're from Delhi i suggest to Delhi papers

0Thank You

Lakshay Yadav 8 years ago

Delhi cbse

0Thank You

Ramanjit Kaur 8 years ago

Both

0Thank You

ANSWER

What r d main mechanisms in organic?

Posted by Benedict Sabu 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Go Pi 8 years ago

See pradeep sharmas you tube videos

0Thank You

Anurag Yadav 8 years ago

Read the chats below u will get it..

1Thank You

ANSWER

what happen when ch3 o ch3 is heated with hi

Posted by Vasu Bhatnagar 8 years ago

CBSE > Class 12 > Chemistry

10 answers

Go Pi 8 years ago

No issues :)

0Thank You

Anurag Yadav 8 years ago

Oh ya it's my mistake sorry ?

0Thank You

Go Pi 8 years ago

I said propanone anurag

0Thank You

Anurag Yadav 8 years ago

May be it's propane u r correct #k gopika

0Thank You

Benedict Sabu 8 years ago

CH3-OH & CH3-I

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Go Pi 8 years ago

Propanone*

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Go Pi 8 years ago

Anurag i think thats pronone!

2Thank You

Tamanna Yadav 8 years ago

Methyl iodide is formed

2Thank You

Anurag Yadav 8 years ago

Question is not clear plz clear it

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Go Pi 8 years ago

You'll get yellow ppt.

0Thank You

ANSWER

Cr^2+ is reducing but Mn^3+ id oxidizing although both have d4 configuration

Posted by Tamanna Yadav 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Go Pi 8 years ago

Mn2+ has extra stability due to d5 config. ~half filled d orbital.

2Thank You

ANSWER

Guys should we write I mean like will they ask for the structures and examples f that cation anion non ion detergents. If so said the answer na. Its too big

Posted by Go Pi 8 years ago

CBSE > Class 12 > Chemistry

8 answers

Anurag Yadav 8 years ago

U can also learn ..why should we take risk.?agar paper me aa gaya to

2Thank You

Anurag Yadav 8 years ago

Ya I have seen bt didn't found.bt I have learnt all the reactions.

1Thank You

Go Pi 8 years ago

*have you seen

0Thank You

Go Pi 8 years ago

Dude no. I asked like have een I previous year questions

0Thank You

Anurag Yadav 8 years ago

Don't be said .waise ye aata ni h exam me

0Thank You

Go Pi 8 years ago

Did they ask for examples too? Say the answer for all three no

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Go Pi 8 years ago

0Thank You

Anurag Yadav 8 years ago

But we have to write it.it is imp

0Thank You

ANSWER

What do u mean by carnallite??

Posted by Rajath Balaji 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Anurag Yadav 8 years ago

KCl .MgCl2.6 H2O

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ANSWER

Plss explain colour in coordination compounds..

Posted by Rashmi Shrivastava 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Go Pi 8 years ago

Presence of unpaired electrons. Excitation of them, when the come back they absorbed energy from visible region Colour complementary to the absorbed will be visible/emitted

2Thank You

ANSWER

Structures of xenon fluorides can't be explained by VB approach why??????

Posted by Anurag Yadav 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Go Pi 8 years ago

Bond

0Thank You

Go Pi 8 years ago

They already have octet configuration still they undergo broad formation

1Thank You

ANSWER

Define anionic detergents

Posted by Karan Jangra 8 years ago

CBSE > Class 12 > Chemistry

4 answers

Go Pi 8 years ago

****. Sorry i.messed up. I said for cation !_! S***

0Thank You

Sushmita Mishra 8 years ago

Aninoic detergents r the sodium salts of sulphonated long chain of alcohol or hydro carbon

0Thank You

Go Pi 8 years ago

Quaternary ammonium salts if famines with acetates,bromides,abd chlorides

0Thank You

Anurag Yadav 8 years ago

The molecule of an anionic-active synthetic detergent is a long carbon chain to which a sulfo group (−SO3) is attached, forming the negatively charged (anionic) part.

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ANSWER

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