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Polymer syllabus for 2019-20

Posted by Himanshu K 6 years ago

CBSE > Class 12 > Chemistry

3 answers

Kriti Sharma 6 years ago

From polymers...... you must know that Polymers are very high molecular mass substances ......and process of formation of polymers known as polymerization....... two types of polymerization...... addition ......condensation....... based on molecular forces they are divided as elastomers .....fibres....... thermoplastic and thermosetting...... you must know the difference between thermoplastic and thermosetting polymers..... one of the most important is ...free radical mechanism ....and structure of polythene ......natural rubber..... polypropene .....polystyrene .....polyvinyl chloride ....Teflon .....nylon 66 ....nylon 6 .....dacron .....bakelite .....glyptal..... urea formaldehyde resin .....biodegradable polymers .......you should know about all the monomeric units of the following Polymers for example the monomeric units .....of nylon 66 are hexa methyl diamine and adipic acid..... nylon 6 is caprolactam .....dacron is ethylene glycol and telepathlic acid..... bakelite is phenol and formaldehyde..... glyptal is ethylene glycol and pathalic acid......?

Nishant Kumar 6 years ago

shruti jha...are topics bfore Co polymerisation hv been removed?

Manjay Jha 6 years ago

From copolymerisation. You can check it from mycbseguide.com itself!

ANSWER

In the Arrhenius equation, what does the factor e‒Ea/RT corresponds to?

Posted by Rajput Boy 6 years ago

CBSE > Class 12 > Chemistry

4 answers

Shefu ??????? 6 years ago

Boltzman factor

Ashwini Chaurasiya 6 years ago

Correspond to the fraction molecules that have kinetic energy greater than Ea (activation energy .

Pushkar Gupta 6 years ago

Logk = log A_ Ea/2.303RT

Manjay Jha 6 years ago

I think Ea/ 2.303 RT. I am not sure!

ANSWER

Define rate of reaction.

Posted by Pooja Singh 6 years ago

CBSE > Class 12 > Chemistry

2 answers

Manjay Jha 6 years ago

Rate of reaction is the change in concentration of reactant and product in unit time!

Pushkar Gupta 6 years ago

It is defined as change in concentration of reactant or product in unit time . SI unit is atm/s or mol.L-1 s-1

ANSWER

Why superpowers need to make alliances with small countrys

Posted by Kenny Singh 6 years ago

CBSE > Class 12 > Political Science

1 answers

Deveshi Sharma 6 years ago

1. Location: example usa using pakistan' location 2. Territory 3. Resources 4. Financial help

ANSWER

Yar conversion ka kya krenge mujhe conversion ata hi ni h mtlb dont know oc ? ??

Posted by Varsha Tripathy 6 years ago

CBSE > Class 12 > Chemistry

17 answers

Varsha Tripathy 6 years ago

Yar give names of imp conversion

Ankan Rastogi 6 years ago

Just practice it once..

Ayush Verma 6 years ago

Rest is waste.....behen kuch achieve krna he to mehnat krni pdegi Or behen ap bohat acha score krogi?? !!!☺️BEST OF LUCK☺️!!!

Manjay Jha 6 years ago

Thanks a ton, Ayush!

Ayush Verma 6 years ago

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..??

Ayush Verma 6 years 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.

Manjay Jha 6 years ago

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

Pushkar Gupta 6 years ago

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

Varsha Tripathy 6 years ago

Ok nice Hope tumhar exam mst jaye

Pushkar Gupta 6 years ago

2020 questions paper also done

Pushkar Gupta 6 years ago

I was also completed the syllabus okk

Varsha Tripathy 6 years ago

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

Varsha Tripathy 6 years ago

To fir paper leak q kiye Lier

Pushkar Gupta 6 years ago

Ha mera ho gya hai

Varsha Tripathy 6 years ago

Bt tumne to padh liya h ncert to ho hi jayega

Manjay Jha 6 years ago

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

Pushkar Gupta 6 years ago

I love

ANSWER

What is organic farming?

Posted by Praneet Kaur 6 years ago

CBSE > Class 12 > Economics

2 answers

Chintoo Sharma 6 years ago

Organic ? is an eco friendly which produce by natural sources not ❌pesticides or chemicals

Heaven 2Hell 6 years ago

Organic farming is an eco friendly technique of growing crop, which promote sustainable development

ANSWER

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

Posted by Manjay Jha 6 years ago

CBSE > Class 12 > Chemistry

4 answers

Varsha Tripathy 6 years ago

Thanks to u also for giving my doubt answer

Gursimran Singh 6 years ago

Yes its right EDTA?

Manjay Jha 6 years ago

Thanks a ton, Varsha!

Varsha Tripathy 6 years ago

EDTA I hope its right ?

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 ago

CBSE > Class 12 > Chemistry

8 answers

Ayush Verma 6 years 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??

Manjay Jha 6 years ago

That's great.

Varsha Tripathy 6 years ago

Im also from bihar but live in banaras

Manjay Jha 6 years ago

I am from Bihar but live in Gujarat.

Varsha Tripathy 6 years ago

Aap kha se ho shruti ji ?

Manjay Jha 6 years ago

Suno to apne Dil ki ??

Varsha Tripathy 6 years ago

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

Manjay Jha 6 years ago

Yaya that's more than enough!

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 ago

CBSE > Class 12 > Chemistry

7 answers

Ayush Verma 6 years 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.

Manjay Jha 6 years 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!??

Varsha Tripathy 6 years 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

Varsha Tripathy 6 years ago

Line by line padhi ho ?

Manjay Jha 6 years ago

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

Varsha Tripathy 6 years ago

Aapne pura ncert padh liya kya shruti ji?

Manjay Jha 6 years ago

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

ANSWER

Define Invert sugar

Posted by Pushkar Gupta 6 years ago

CBSE > Class 12 > Chemistry

3 answers

Pushkar Gupta 5 years, 11 months ago

I love u both

Varsha Tripathy 6 years ago

Mix. Of fructose nd glucose obtained by splitting of sucrose

Manjay Jha 6 years ago

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

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 ago

CBSE > Class 12 > Chemistry

3 answers

Ayush Verma 6 years ago

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

Ayush Verma 6 years 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

Manjay Jha 6 years ago

Do it!

ANSWER

6 marks ke important her chapter ke questions

Posted by Rabia Khatun 6 years ago

CBSE > Class 12 > राजनीति विज्ञान

0 answers

ANSWER

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

Posted by Varsha Tripathy 6 years ago

CBSE > Class 12 > Chemistry

3 answers

Ayush Verma 6 years 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??

Manjay Jha 6 years ago

No, i didn't!

Sanchari Roy 6 years ago

Yes

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 ago

CBSE > Class 12 > Chemistry

7 answers

Manjay Jha 6 years ago

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

Ayush Verma 6 years ago

Able to achieve only 45+ marks

Manjay Jha 6 years 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??

Rajput Boy 6 years ago

Sample paper kr lo

Varsha Tripathy 6 years ago

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

Manjay Jha 6 years 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??

Hasan Azam 6 years ago

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

ANSWER

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

Posted by Ujjwal Jaguri 6 years ago

CBSE > Class 12 > Chemistry

1 answers

Riya Rana 6 years ago

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

ANSWER

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

Posted by Manjay Jha 6 years ago

CBSE > Class 12 > Chemistry

2 answers

Manjay Jha 6 years ago

?The ques is from Coordinative Compound.

Kajal Kunwar 6 years ago

Soap

ANSWER

Why india dindnt sign CTBT

Posted by Harsh Sejwal 6 years ago

CBSE > Class 12 > Political Science

1 answers

Deveshi Sharma 6 years ago

Because india finds it controversial

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 ago

CBSE > Class 12 > Chemistry

2 answers

Nishant Kumar 6 years ago

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

Sarthak Vats 6 years ago

Ques. M O to h hi nhi

ANSWER

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

Posted by Añjálî Yådâv 6 years ago

CBSE > Class 12 > Chemistry

3 answers

Riya Rana 6 years ago

Aspirine

Ayush Verma 6 years ago

Examiner can ask about the structure of Aspirine.

Varsha Tripathy 6 years ago

No

ANSWER

Marking according to chapter

Posted by Yash Jain 6 years ago

CBSE > Class 12 > Economics

1 answers

Khushi Varshney 6 years ago

YOU CAN CHECK HERE https://varshneyguru.blogspot.com/2020/03/economics-last-years-question-papers.html

ANSWER

How ozone is estimated quantitatively (1) kmno4

Posted by Moriya Footwear 6 years ago

CBSE > Class 12 > Chemistry

2 answers

Sarthak Vats 6 years ago

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

Manjay Jha 6 years ago

With the help of potassium iodide

ANSWER

What is delta formation ..??

Posted by Shivam Dubey 6 years ago

CBSE > Class 12 > Chemistry

3 answers

Riya Rana 6 years 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...

Shivam Dubey 6 years ago

Bhaii chem. Me

Ujjwal Jaguri 6 years ago

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

ANSWER

Set 2 mai 1 que...ka ans illegal vale ka kya tha

Posted by Love ..... . 6 years ago

CBSE > Class 12 > Accountancy

3 answers

Dimple Brar 6 years ago

Compulsory Dissolution....is the answer

Pranzil Sinhal 6 years ago

Means comes to be an end

Pranzil Sinhal 6 years ago

End ho jaega dissolution yeh answer h

ANSWER

Set 2 mai npo ka suplus approx kitna aaya tha...bhuut. Chota tha...4 marks vala

Posted by Love ..... . 6 years ago

CBSE > Class 12 > Accountancy

7 answers

Dimple Brar 6 years ago

2,20,000

Khushi Varshney 6 years ago

68700

Love ..... . 6 years ago

Tunhara glt ho skta h

Love ..... . 6 years ago

Ans jyada aaega

Praneet Kaur 6 years ago

76700

Love ..... . 6 years ago

Ni phr bhi

Pranzil Sinhal 6 years ago

Ab ky hoga phuchne se paper toh ho gya n

ANSWER

Agr cash flow mai operating part incorrect h to BOD milega kya usme?

Posted by Love ..... . 6 years ago

CBSE > Class 12 > Accountancy

1 answers

Himanshi Kumari 6 years ago

Maybe it can happen ?.....

ANSWER

Rathi Ltd. invited applications for issuing 1,00,000 shares of a premium of On Application 4 (including premium 10 each at 2 per share. Amount per share was payable as follows 1) On Allotment 4 (including premium 1) On First and Final Call Applications were received for 1,50,000 shares and allotment was made to the applicants as follows: Balance Applicants of 80,000 shares were allotted 60,000 shares. (i) (ii) (iii) No shares were allotted to the remaining applicants and their Applicants of 50,000 shares were allotted 40,000 shares. application money was returned. Yatin, who belonged to category (ii) and who had applied for 5,000 shares failed to pay the allotment and call money. His shares were forfeited, Later, half of Yatin's forfeited shares were reissued @ fully paid up. Pass the necessary journal entries to record the above transactions in the books of Rathi Ltd.

Posted by Meet Ravariya 1 year, 3 months ago

CBSE > Class 12 > Accountancy

1 answers

Jatin Lakhani 1 year, 3 months ago

8000 in capital reserve

ANSWER

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

Posted by Sarthak Vats 6 years ago

CBSE > Class 12 > Chemistry

2 answers

Sarthak Vats 6 years ago

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

... .. 6 years ago

0

ANSWER

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

Posted by Annu Sharma 6 years ago

CBSE > Class 12 > Chemistry

5 answers

Riya Rana 6 years ago

Good morning.

Ayush Verma 6 years ago

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

Kajal Kunwar 6 years ago

Yaaa

Arsheen Kaur 6 years ago

yess it will come

Ďãřşháñăã Yadav ? ? ? 6 years ago

g objectives bhi ayenge aur assertion and reasoning bhi

ANSWER

Evaluate integration from -1 to 1 log mod (2+3x)/(2-3x)

Posted by Jagdish Kumar 6 years ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What are demand deposits??

Posted by Ishikaa Jain 6 years ago

CBSE > Class 12 > Economics

2 answers

Rashmi Rawat 6 years ago

a deposit of money that can be withdrawn without prior notice, e.g. in a current account.

Gursimran Saini 6 years ago

The deposits which can be withdrawn by the depositor on his / her demand either through cash or cheques

ANSWER

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