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Why iodio benzene can prepared by adding cu2x2 and diazonium salt while bromide and chloride benzene not??

Posted by Shivani Dagar 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Pls explain the sipole movement of haloalkanes....? It should increase as the bond length increases while going down the group but its very different for haloalkanes...?

Posted by Nishtha Pandya 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Nishtha Pandya 8 years ago

Bcoz down the group electronegativity decreases so the polarisation . And so the dipole moment shld decrease but for CH3Cl the value is higher than CF3 as CF3 has small bond length therefore its dipole moment is slightly less then that of CH3Cl

Nishtha Pandya 8 years ago

Sorry not sipole it is dipole....!!!

ANSWER

In which one of two structures, NO2+and NO2-,the bond angle has a higher value?

Posted by Sunny Singh 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Desperately in need of help to prepare for CBSE class 12 Chemistry. I am a dummy student caught in an exasperating crisis. Please Help!

Posted by Eye Opener 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Zenil Mehta 8 years ago

ofc its illegal buddy..!!

Eye Opener 8 years ago

Is Dummy legal?

ANSWER

importance of 6 and 6,6 in polymer nylon 6 and nylon 6,6 ???

Posted by Riya Sharma 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Riya Sharma 8 years ago

thanks vansh

Vansh Luthra 8 years ago

It tells about the number of carbon atoms in its monomers

ANSWER

This year(2018) how many questions will be ask in chemistry exam of class 12 the??

Posted by Nitish Singh 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Riya Tripathi 8 years ago

Nearly 26!!

ANSWER

what is racemic mixture and racemisation?

Posted by Muskan Chauhan 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Sharvistha Githala 8 years ago

A mixture contaning two enentiomers in equal proportions will have zero optical rotation , as the rotation due to one Isomer will be cancelled by rotation of other isomer such a mixture is called recemic mixture and the process of formation of recemic mixture is known as racemisation

ANSWER

Formula of siderite?

Posted by Lalit Maan 8 years ago

CBSE > Class 12 > Chemistry

4 answers

Lalit Maan 8 years ago

State and drive Rochie effect of attraction ? ??

Lalit Maan 8 years ago

What is Rochie ?in chemistry ??

Vedita Chaturvedi 8 years ago

FeCO3

Lalit Maan 8 years ago

Siderite = ???

ANSWER

Learn only ncert to score 60 in chemistry

Posted by Arya Thakur 8 years ago

CBSE > Class 12 > Chemistry

8 answers

Shruti Agarwal 8 years ago

So what's a big deal to get 60 marks in chemistry.

Abhijeet Khandelwal 8 years ago

Do intex & exercise questions

Vedita Chaturvedi 8 years ago

But how

Abhijeet Khandelwal 8 years ago

I m telling seriously

Abhijeet Khandelwal 8 years ago

Ya i m seriously

Vedita Chaturvedi 8 years ago

How u r so confident

Vedita Chaturvedi 8 years ago

Seriously

Abhijeet Khandelwal 8 years ago

Ya

ANSWER

Use of lime stone

Posted by Tanu Shukla 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Shivani Dagar 8 years ago

Depends where u r using

ANSWER

Ncert intext ques.15 on page 21

Posted by Sweety Sharma 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Sample paper of class 12

Posted by Manjeet Prasad 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Chemistry me NCERT hi aata hai bs

Posted by Daksh Chilkoti 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Packing efficiency is imp????

Posted by Aashifa Siddiqui 8 years ago

CBSE > Class 12 > Chemistry

4 answers

Shivani Dagar 8 years ago

Should be revised

Abhijeet Khandelwal 8 years ago

Yes

Ramanjit Kaur 8 years ago

Pta ni

Aashifa Siddiqui 8 years ago

Btao n koi

ANSWER

What are enantiomers??

Posted by Sruthi Sks 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Ronak Goyal 8 years ago

Enantiomers are the molecules which are non super imposible mirror images

ANSWER

Aniline does not undergo friedal craft rxn

Posted by Kapil Meena 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Lalit Yadav 8 years ago

Due to salt formation with AlCl3

ANSWER

W

Posted by Vaishnavi Sharma 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

draw the structure of 4 -bromo- 4-methylpentane _2-ene

Posted by Arpan Pawar 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Honey Sharma 8 years ago

Very easy..

ANSWER

What is ionisation energy

Posted by Vaishnavi Sharma 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Abhishek Singh 8 years ago

Ionisation Energy is the amount of energy required for the removal of one electron from the outermost orbit of an isolated gaseous atom..

ANSWER

From where to start preparing for exam

Posted by Kanishk Aggarwal 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Ramanjit Kaur 8 years ago

1st chapter se shuru kro aur theory pdho

Pratik Patra 8 years ago

NCERT exercise and intext questions

ANSWER

A translucent white waxy solid (A) on heating in an inert atmosphere is converted to it's allotropic from (B). Allotrope (A) on reaction with very dilute aqueous KOH liberates a highly poisonous gas (C) having rotten fish smell. With excess of chlorine it forms (D) which hydrolyses to compound (E). Identify compounds (A) to (E)

Posted by Sweety Priya 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is electolytic cell&electrolysis??

Posted by Menaga Gunasekaran 8 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Chemistry main good marks k liye Kaise prepare karoon? Kahan se padhon, ncert se ki reference ,ya last year paper solve karo plz tell me..

Posted by Annu Parween 8 years ago

CBSE > Class 12 > Chemistry

4 answers

Pratik Patra 8 years ago

NCERT exercise n intext questions are sufficient...

Pooja Bora 8 years ago

Only ncert

Honey Sharma 8 years ago

Ncert bhut h bhai..

Ajay Singh 8 years ago

Ncert ki theory pado

ANSWER

Write one similarity between physisorption and chemisorption

Posted by Vishesh Dixit 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Menaga Gunasekaran 8 years ago

Depends on nature of gas&surface area

ANSWER

What type semicondutor is obtained when silicon is doped with arsenic semiconductors ??

Posted by Komal Panwar 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Namamee Shukla 8 years ago

N type

ANSWER

Why frankel defect are not found in alkali metal halide ??

Posted by Komal Panwar 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Eati Srinivasa Rao 8 years ago

Alkali metal halides have high lattice enthalpy so the atoms cannot dislocate easily

Nikhil Khandal 8 years ago

As the size of action in alkali metal is large

ANSWER

What are Natural polymers?

Posted by Atul Kumar 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Menaga Gunasekaran 8 years ago

Polymer which are obtained naturally like rubber

ANSWER

Refractibe index of a solid is observed to have the same value along all direction. Comment on the nature of solid

Posted by Vaibhav Bhasin 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Nikhil Khandal 8 years ago

Amorphous solid as they are isotropic in nature

ANSWER

What would be the nature of solid if there is no energy gap between valence band and conduction band ?

Posted by Nishant Singh Singh 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Menaga Gunasekaran 8 years ago

Conductor

ANSWER

Is there any difference between 1 chloloethene and chloloethene?

Posted by Shivani Dagar 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Diya Joshi 8 years ago

No...as it have only two molecules...wherever the Cl molecule is attached counting starts from there

ANSWER

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