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

Ye hopeless hone ka time nhi he. Subah se hi haloalkane/arenes ke sare imp conversions kr lo 1 hours ke, alcohol phenols ke 2 hours , aldehyde ketone ke 2 hours , amines ke 1 hours, than 1 hour for last 3 chapters and take a sleep of 6 hours and wake up early morning at 2.00 am and revise all conversions and iupac nomenclature and also all naming reactions..??

1Thank You

Ayush Verma 6 years, 1 month ago

This is not a time of worry...ok!! be positive nd think chemistry phod ke aenge... Do only important conversions of ncert only...imp.conversions only not all.

0Thank You

Manjay Jha 6 years, 1 month ago

No Varsha, i am weak at OC that's why!

0Thank You

Pushkar Gupta 6 years, 1 month ago

Yes i also pray for all people of cbse guide ??

1Thank You

Varsha Tripathy 6 years, 1 month ago

Ok nice Hope tumhar exam mst jaye

0Thank You

Pushkar Gupta 6 years, 1 month ago

2020 questions paper also done

1Thank You

Pushkar Gupta 6 years, 1 month ago

I was also completed the syllabus okk

1Thank You

Varsha Tripathy 6 years, 1 month ago

Waise i was telling to shruti not u usne pura ncert padh liya h

1Thank You

Varsha Tripathy 6 years, 1 month ago

To fir paper leak q kiye Lier

1Thank You

Pushkar Gupta 6 years, 1 month ago

Ha mera ho gya hai

1Thank You

Varsha Tripathy 6 years, 1 month ago

Bt tumne to padh liya h ncert to ho hi jayega

1Thank You

Manjay Jha 6 years, 1 month ago

Same here rey i am very tensed for OC just hope ho jaaye exam me.

1Thank You

Pushkar Gupta 6 years, 1 month ago

I love

1Thank You

ANSWER

Which compound is used to estimated hardness of water? - Coordinate Compound!

Posted by Manjay Jha 6 years, 1 month ago

CBSE > Class 12 > Chemistry

4 answers

Varsha Tripathy 6 years, 1 month ago

Thanks to u also for giving my doubt answer

1Thank You

Gursimran Singh 6 years, 1 month ago

Yes its right EDTA?

1Thank You

Manjay Jha 6 years, 1 month ago

Thanks a ton, Varsha!

0Thank You

Varsha Tripathy 6 years, 1 month ago

EDTA I hope its right ?

4Thank You

ANSWER

Shruti jha ji maine pblock nd dblock ke ncert ke intext and eg bna liye h Is it enough ? nd or physical me v yhi ki hu

Posted by Varsha Tripathy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

8 answers

Ayush Verma 6 years, 1 month ago

You should solve only ncert examples nd intext qtns for inorganic But i suggest you to solve only ncert book for whole portion b'coz ncert 'bhagwaan' he ??best of luck for ur xam??

0Thank You

Manjay Jha 6 years, 1 month ago

That's great.

0Thank You

Varsha Tripathy 6 years, 1 month ago

Im also from bihar but live in banaras

1Thank You

Manjay Jha 6 years, 1 month ago

I am from Bihar but live in Gujarat.

0Thank You

Varsha Tripathy 6 years, 1 month ago

Aap kha se ho shruti ji ?

0Thank You

Manjay Jha 6 years, 1 month ago

Suno to apne Dil ki ??

1Thank You

Varsha Tripathy 6 years, 1 month ago

Till now im confuse should i solve sample paper now Kya padhu smjh ni aa rha h kuch

2Thank You

Manjay Jha 6 years, 1 month ago

Yaya that's more than enough!

0Thank You

ANSWER

Yar physics me osswl ka kr ke gyi thi bt kuch ni match kiya to ab believe ni h sample paper pr isliye ni bna rhi hu ki fir khi time waste ni ho jaye iske chakkr me

Posted by Varsha Tripathy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

7 answers

Ayush Verma 6 years, 1 month ago

U r right. Dont trust on sample paper nd to solve sample paper is waste of time?? I can give the most most important topics of chem. which comes every year.

0Thank You

Manjay Jha 6 years, 1 month ago

Kuch kuch chapters line by line padhi hu baki jo highlighted lines padh daali. And don't worry everything will be fine. Rab meher kare!??

0Thank You

Varsha Tripathy 6 years, 1 month ago

Maine part 2ke last 3chapters ke ncert reading dali hu nd baki sbke imp intext nd ex ques.ki hu Fir v dar lg rha h

0Thank You

Varsha Tripathy 6 years, 1 month ago

Line by line padhi ho ?

0Thank You

Manjay Jha 6 years, 1 month ago

Haanji padh li hu except part 2 ke starting 4 chapters will do that kal.

0Thank You

Varsha Tripathy 6 years, 1 month ago

Aapne pura ncert padh liya kya shruti ji?

1Thank You

Manjay Jha 6 years, 1 month ago

The only thing i know is Ncert of chemistry is BIBLE. Vo padhlo to sab ho jayega!

0Thank You

ANSWER

Define Invert sugar

Posted by Pushkar Gupta 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Pushkar Gupta 5 years, 11 months ago

I love u both

1Thank You

Varsha Tripathy 6 years, 1 month ago

Mix. Of fructose nd glucose obtained by splitting of sucrose

1Thank You

Manjay Jha 6 years, 1 month ago

Hydrolysis of sucrose changes the sign of rotation from dextro to laevo thus the product formed is named as Invert Sugar!

1Thank You

ANSWER

Ab time ni h ncert oc me padhne ka i think so bcz oc kuch smjh ata ni so i m thinking that ab jitna pade h usko kl bs revise kr lu ek bari

Posted by Varsha Tripathy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Ayush Verma 6 years, 1 month ago

And if you only learn the all naming reactions of oc than u will be able to gain 15+marks

0Thank You

Ayush Verma 6 years, 1 month ago

No...never leave oc!!!...it contains 28marks There's a youtube channel genius learning. You should visit it and analyze that which type of qts Comes from oc and it also tick important qts in ncert. You can do that qts and able to gain 20+ marks in oc

0Thank You

Manjay Jha 6 years, 1 month ago

Do it!

0Thank You

ANSWER

Kitno ne osswal ka sample paper preffer kr rhe ho ?Is it good ?

Posted by Varsha Tripathy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Ayush Verma 6 years, 1 month ago

Thats all are waste Do only latest cbse sample papers and last 5 years qts papers. Pta he na physics me kya hua tha??

0Thank You

Manjay Jha 6 years, 1 month ago

No, i didn't!

0Thank You

Sanchari Roy 6 years, 1 month ago

Yes

0Thank You

ANSWER

Should i study ncert now bcz mai sare chapters ka imp book tick mark padh li hu which was prffered by vedantu nd kuch extra ni padhi hu To kya itna kafi h ache marks ke liye

Posted by Varsha Tripathy 6 years, 1 month ago

CBSE > Class 12 > Chemistry

7 answers

Manjay Jha 6 years, 1 month ago

Ayush, i am done with OC thora tension h bas aur to i am well prepared!

0Thank You

Ayush Verma 6 years, 1 month ago

Able to achieve only 45+ marks

0Thank You

Manjay Jha 6 years, 1 month ago

Biomolecules polymers chemistry in everyday life p block d f block metallury cuz' direct questions aate h isliye thought to make these chapters strong than physical cuz' my organic part is very weak??

0Thank You

Rajput Boy 6 years, 1 month ago

Sample paper kr lo

1Thank You

Varsha Tripathy 6 years, 1 month ago

Or kya padh li h konse chapter pr jyada focus krna chahiye

0Thank You

Manjay Jha 6 years, 1 month ago

Reading ncert at this point will be time consuming for sure. And you don't have sufficient time but if can read ncert then it's all up to you! All the best??

1Thank You

Hasan Azam 6 years, 1 month ago

Mujhe bhi yhi lg rha tha ki itna sufficient hai ki nhi isiliye maine or bhi prep kr li hai iske alawa.

1Thank You

ANSWER

what is the reason for stability of colloidal sols in easy language ?

Posted by Ujjwal Jaguri 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 6 years, 1 month ago

Brownian movement is the reason for stability of colloid. It is a zig zag movement of colloidal particles.

0Thank You

ANSWER

Hello laddosss!!!! Which compound is used to estimate the hardness of water???

Posted by Manjay Jha 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Manjay Jha 6 years, 1 month ago

?The ques is from Coordinative Compound.

0Thank You

Kajal Kunwar 6 years, 1 month ago

Soap

0Thank You

ANSWER

An organic compound with formula C9H10 forms 2,4DNP derivative reduces tollen's reagent nd undergoes cannizzaro reaction on vigrous oxidation it gived 1,2benzene dicarboxilyic acid identify the compound

Posted by Pallvi Patel 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Nishant Kumar 6 years, 1 month ago

Pallavi patel C9H10 k sath O bhi hoga dekho... warna ques is wrong

0Thank You

Sarthak Vats 6 years, 1 month ago

Ques. M O to h hi nhi

1Thank You

ANSWER

Is in the chemistry in everyday life there is any question on the structures

Posted by Añjálî Yådâv 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Riya Rana 6 years, 1 month ago

Aspirine

0Thank You

Ayush Verma 6 years, 1 month ago

Examiner can ask about the structure of Aspirine.

0Thank You

Varsha Tripathy 6 years, 1 month ago

0Thank You

ANSWER

How ozone is estimated quantitatively (1) kmno4

Posted by Moriya Footwear 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Sarthak Vats 6 years, 1 month ago

By reacting with excess pottasium iodide solution buffered with borate buffer. i2 liberated is then titrated against standard soln of sodium thiosulphate

1Thank You

Manjay Jha 6 years, 1 month ago

With the help of potassium iodide

0Thank You

ANSWER

What is delta formation ..??

Posted by Shivam Dubey 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Riya Rana 6 years, 1 month ago

River water contains clay which is a colloid and when it combines with the sea water which contains various salts or electrolytes in this case like nacl or mgcl2 they coagulate and delta is formed...

0Thank You

Shivam Dubey 6 years, 1 month ago

Bhaii chem. Me

0Thank You

Ujjwal Jaguri 6 years, 1 month ago

A hard triangular land mass which get formed at the junction of sea and river ... This occurs due to coagulation....

0Thank You

ANSWER

What is the entropy change for an ideal solution?... 1.positive 2.negative 3. Zero ??

Posted by Sarthak Vats 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Sarthak Vats 6 years, 1 month ago

∆H=0 , ∆S=0... So it implies ∆G=0... Is it true then?

0Thank You

... .. 6 years, 1 month ago

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ANSWER

Kya 2020 m chemistry ke paper m bhi objective qution aayege?

Posted by Annu Sharma 6 years, 1 month ago

CBSE > Class 12 > Chemistry

5 answers

Riya Rana 6 years, 1 month ago

Good morning.

0Thank You

Ayush Verma 6 years, 1 month ago

Behen tu 12th me hi he na..??

0Thank You

Kajal Kunwar 6 years, 1 month ago

Yaaa

0Thank You

Arsheen Kaur 6 years, 1 month ago

yess it will come

0Thank You

Ďãřşháñăã Yadav ? ? ? 6 years, 1 month ago

g objectives bhi ayenge aur assertion and reasoning bhi

1Thank You

ANSWER

Any body wrote phy 55/3/3 how was it answer me immideately

Posted by Mahesh M 6 years, 1 month ago

CBSE > Class 12 > Chemistry

6 answers

Riya Rana 6 years, 1 month ago

Set 2

0Thank You

Varsha Tripathy 6 years, 1 month ago

Mera set 2,

0Thank You

Meghna Shrivastav? 6 years, 1 month ago

Mera set 3

0Thank You

Pushkar Gupta 6 years, 1 month ago

Mera 55/1/2

0Thank You

Pooja Rawat 6 years, 1 month ago

Mera b

0Thank You

Neha Choudhary 6 years, 1 month ago

Mera set 2 tha

1Thank You

ANSWER

Important reaction of organic

Posted by Naresh Jaglan 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Awantika Deora 6 years, 1 month ago

Riemar tiemann Hoffman Bromomide degradation rxn Diazonium salt rxns Gabriel Pthalamide synthesis Organic isn't small topic or 1 chapter there are several important rxns and yess the conversions are most important atleast one Q is fixed

0Thank You

ANSWER

Galena is the ore of which metal???

Posted by Asna Khan 6 years, 1 month ago

CBSE > Class 12 > Chemistry

6 answers

Rajat Barwar 6 years, 1 month ago

It's lead. Antiferous galena is of silver.

1Thank You

Neha Choudhary 6 years, 1 month ago

Lead

0Thank You

Sanchari Roy 6 years, 1 month ago

Sorry its lead.

0Thank You

Abhie Mandal 6 years, 1 month ago

Lead (pb)

0Thank You

Xyz Abc 6 years, 1 month ago

No...lead

0Thank You

Sanchari Roy 6 years, 1 month ago

Silver.

0Thank You

ANSWER

Define denaturation give example

Posted by Neeraj Kumar Agrawal 6 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Sukraj Subba 6 years, 1 month ago

Globules unfold and helix uncoiled and protein loses their biological activity called denaturation of protein

0Thank You

Sanchari Roy 6 years, 1 month ago

Removing a specific property of a substance by addition of poison or impurity or under external conditions such as change in temperature or pH is termed denaturation. Examples--- denaturation of alcohols, denaturation of proteins. Alcohol is denatured by adding CuSo4 or pyridine which makes it unfit for drinking. Sec. & Tert. structures of proteins get destroyed under external stresses and lossing biological activity.

2Thank You

Tamanna Sharma 6 years, 1 month ago

Coagulation of protein eg boiled egg

0Thank You

ANSWER

Define zwitter ion with example

Posted by Neeraj Kumar Agrawal 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Xyz Abc 6 years, 1 month ago

Ion having positive as well as negative charge is called zwitter ion...

0Thank You

ANSWER

If I want to score 40 out of 70 which chapters should I prefer to do

Posted by Zafarul Hasan 6 years, 1 month ago

CBSE > Class 12 > Chemistry

7 answers

Zafarul Hasan 6 years, 1 month ago

Thnx kriti itna to mera tutn teacher nhi kiya mere liye???

1Thank You

Lakshya ? 6 years, 1 month ago

Bhai OC kr l and.. Baki jo bhi easy chapter ho ske wo krle

0Thank You

Lakshya ? 6 years, 1 month ago

Kriti yrr tum kuch jayda hi bhawna m beh jati ho...

0Thank You

Ďãřşháñăã Yadav ? ? ? 6 years, 1 month ago

organic(amines, alcohol phenol and ethers aur aldehyde wale chapters se test pdh lena bus) kr lo but make sure conversion and p, d, f block coordination aur elctro, aur CK.

1Thank You

Tamanna Sharma 6 years, 1 month ago

Kriti yrr tumne sari chemistry cover kar di ,khud hi dekh lo kuch nahi choda tumne

4Thank You

Kriti Sharma 6 years, 1 month ago

If you want to score 40 out of 70 .....then I suggest you to do chapters like ....chemistry in everyday life.... Polymers .....biomolecules.... solutions ...organic chemistry...... for Organic Chemistry do watch the video of '''''vedantu board sprint of organic chemistry'''''' on YouTube it is really helpful and will help you get with some basic concepts do chapter of metallurgy .....surface chemistry...... these are easy.... checkout notes of chapter ,,,,P block,,,, and ,,,,d and f block elements ,,,,these are chapters based on limited concepts..... check previous year questions of these chapters ''''''''yaad rako. jo karna wo achhe se karna warna kuch bhi nahin hoga''''''''..... do daniel cell , as it is important ,study nerst equation ,,,,valence bond theory , crystal field theory, okkkk...study basic nature of amines , acidic comparison of alcohols, sn1 and sn2 reaction ...adsorption isotherm curve okkkkk....?

7Thank You

Saad Saifi 6 years, 1 month ago

Then you should focus only on part 1 chemistry hope it helps❣️

0Thank You

ANSWER

What is structure of Butan-1-ol

Posted by Tushar Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Deepan Balachandar 6 years, 1 month ago

CH3-CH2- CH2-CH2-OH

0Thank You

Sharli Irissssss 6 years, 1 month ago

CH3-CH2 -CH2 -CH2-OH

1Thank You

ANSWER

Wht type of bonding helps in stabilizing the alpha helix structure of protiens?

Posted by Neeraj Kumar Agrawal 6 years, 1 month ago

CBSE > Class 12 > Chemistry

5 answers

Riya Rana 6 years, 1 month ago

It is intramolecular H-bonding for sure

0Thank You

Neeraj Kumar Agrawal 6 years, 1 month ago

Pls give me in details

0Thank You

Anubha K 6 years, 1 month ago

Intramolecular hydrogen bonding

1Thank You

Neeraj Kumar Agrawal 6 years, 1 month ago

Its wrng

0Thank You

Pavan Adi 6 years, 1 month ago

Disulphide bond vander walls force electrostatic force hydrogen bonds force. Crt me if I am wrong.

1Thank You

ANSWER

Is a diet consisting mainly of rice an adequate diet? Why or why not

Posted by Neeraj Kumar Agrawal 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Neha Choudhary 6 years, 1 month ago

No baki sb bhe shi amount me hona chaiye ,,

0Thank You

ANSWER

Why NA + water is highly exothermic reaction

Posted by Tushar Kalra 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 1 month ago

The reaction of sodium with water is highly exothermic. However, the rate of the reaction can be lowered by making an amalgam. When sodium amalgam is formed, the rate of reaction with water is lowered because the surface area of sodium that can come in contact with water decreases.

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ANSWER

Formula of sulphuric acid

Posted by Anshika Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

4 answers

Varun Chawla 6 years, 1 month ago

H2SO4

1Thank You

Sharli Irissssss 6 years, 1 month ago

H2SO4

1Thank You

Aakarsh Sharma 6 years, 1 month ago

Really

0Thank You

Aryaman Singh 6 years, 1 month ago

H2SO4

1Thank You

ANSWER

Why cr2o3 known as acidic hydride

Posted by Ajay Singh 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Abc ?⏳ 6 years, 1 month ago

An acid anhydride is a compound obtained by the removal of water from 2 moles of an acid(generally carboxylic acids). CrO3 (chromium trioxide) is called an acidic anhydride because: CrO3+H2O→H2CrO4 i.e. the compound on gaining a water molecule becomes an acid (chromic acid here). ... Thus CrO3 is acidic in nature.

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ANSWER

Important questions for exams passing marks

Posted by Abhi Gupta 6 years, 1 month ago

CBSE > Class 12 > Chemistry