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

Aniline doesn't undergo friedel craft rxn becoz the reagent AlCl3 bring electron deficient act as a Lewis base & attack on the lone pair of nitrogen present in aniline to form an insoluble complex which precipitate out & and rxn doesn't proceed

3Thank You

ANSWER

Give the significance of lattice pint.

Posted by Chetan Balundagi 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Chetan Balundagi 8 years, 2 months ago

Thanks bro

0Thank You

Chinkee Jaatrana 8 years, 2 months ago

Each lattice poinnt represent one constitutent particle. Particle of a solid may b an atom, a molecule or an ion

1Thank You

ANSWER

Is benzoic acid is amorphous or crystalline.

Posted by Chetan Balundagi 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Rohan Rathore 8 years, 2 months ago

it is a white crystalline solid.

0Thank You

Chinkee Jaatrana 8 years, 2 months ago

Crystalline

0Thank You

ANSWER

Hybridisation of no3-

Posted by Syed Sharay Iqbal 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Aarna Jain 8 years, 2 months ago

Sp 2

1Thank You

ANSWER

What is the difference between ambidentate ligand & bidentate ligand??

Posted by Sanket Sarkar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Mohit Gupta 8 years, 2 months ago

Ambidentate ligand are those ligand which have two different atom to donate electron pair e.g,NO2 But in didentate ligand are those ligand which two same atom to donate electron pair e.g, ethane 1-2 diamine

2Thank You

Rachit Goyal 8 years, 2 months ago

Ambident ligands are those ligands which will form coordinate bond from any one side from two choices e.g. :CN, in it C can donate it's e-'s pair or also N can. . . But bidentate ligands will definitely form two coordinate bonds e.g. en ( ethylene diamine )

1Thank You

ANSWER

How can possible 4s1 3d10 electronic configuration?

Posted by Prince Yadav 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Rachit Goyal 8 years, 2 months ago

E.g in Cu (29) , e.c. is 4s2 3d9 but as we know half- filled and fully- filled d-orbital is more stable that's why we will give one of the s electron to d and electronic configuration (e.c.) will be 4s1 3d10

0Thank You

Sakshi Rai 8 years, 2 months ago

D ki jegeh SCell.m electron pehle bhare jate h.☺☺☺☺

0Thank You

ANSWER

How can possible ns1 3d20 electronic configuration

Posted by Prince Yadav 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

I have not studied organic chemistry nicely and I am not able to remember the named reactions. Please suggest me how can I learn it to remember till the examination.

Posted by Annapurna Mishra 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Pankaj Sihag 8 years, 2 months ago

Soory not lage but page ??

0Thank You

Pankaj Sihag 8 years, 2 months ago

Write all the reaction on a lage and revise it daily or you can paste in front wall of your study table

0Thank You

ANSWER

I have not Studied or

Posted by Annapurna Mishra 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Conversion Benzyl chloride to 2-phenyl ethanamine

Posted by Shalini Tiwari 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Pankaj Sihag 8 years, 2 months ago

bezyl chloride on reaction with kcn gives bezylcynide and further reaction with LiAlH4 gives 2 phenylethylamine. C6h5ch2cl+ KCN =C6H5CH2CN+LiAlH4= C6H5CH2CH2NH3

2Thank You

ANSWER

What is difference between adsorption and absorption.

Posted by Pankaj Sihag 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Gehma Anand 8 years, 2 months ago

Adsorption is a surface phenomena such that the substance (adsorbate) is adsorbed on another substance (adsorbent). The adsorbate remains on the surface only. Eg: chalk adsorbs water Absorption is a bulk phenomena. The entire body absorbs another substance. Eg: sponge absorbs water.

2Thank You

ANSWER

What is ortho effects?

Posted by Anamik Rawat 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Annapurna Mishra 8 years, 2 months ago

Ortho effect is the effect in which the compound forms major product.

1Thank You

ANSWER

Is anyone's here

Posted by Sweety Yadav 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

In practicals is calculation write on blank and lining both pages

Posted by Sweety Yadav 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Annapurna Mishra 8 years, 2 months ago

You have to write on lining page only.

1Thank You

ANSWER

How to predict the order and molecularity of the reaction .

Posted by Aastha Agarwal 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Explain how the phenomenon of adsorption finds application in each of the following processes: 1- production of vccum

Posted by Krishna Nayak 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Which isomer of c5h11cl has higher boiling point

Posted by Md Parwez 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Balschiemann reaction

Posted by Md Parwez 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Transition metals have high enthalpies of atomisation.

Posted by Aman Shrivastava 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Naivedya Jain 8 years, 2 months ago

Bcz it has d orbital unpaired electron

1Thank You

ANSWER

Why alkali metals does not show Frankel defect

Posted by Aashutosh Pandit 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Aashutosh Pandit 8 years, 2 months ago

Because they are closely packed hence no vacancy can be created

1Thank You

ANSWER

What is the formula of laughing gas?

Posted by Bhavi Jain 8 years, 2 months ago

CBSE > Class 12 > Chemistry

5 answers

Aman Shrivastava 8 years, 2 months ago

N2o

1Thank You

Sakshi Rai 8 years, 2 months ago

N2o

1Thank You

Vedant Gupta 8 years, 2 months ago

N2O

3Thank You

Akshita Gupta 8 years, 2 months ago

N2O

4Thank You

Aashutosh Pandit 8 years, 2 months ago

NO2

0Thank You

ANSWER

Why transition elements show variable oxidation state and colour

Posted by Anjali Kumari 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Bhavi Jain 8 years, 2 months ago

Transition elements show variable oxidation state because the energy gap between ns and (n-1)d orbital is small hence along with ns (n-1)d orbital also participate in bonding and form strong mettalic bonds hence show variable oxidation states

3Thank You

Akshita Gupta 8 years, 2 months ago

Transition elements show variable state oxidation in their compounds. Reason of variable oxidation state is that there is a very small energy difference in between (n-1)d and ns orbitals. As a result ,electrons of (n-1)d orbitals as well as ns-orbitals take part in bond formation.

4Thank You

ANSWER

Trick For conversion in organic chemistry

Posted by Chinmoy Ch 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Sandesh Verma 8 years, 2 months ago

All the naming reactions

0Thank You

Aman Shrivastava 8 years, 2 months ago

Learning important reactions

0Thank You

ANSWER

Which one has higher bp alcokal and carboxylic acid and why

Posted by Nitin Yaduvanshi 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Apoorva Asati 8 years, 2 months ago

Carboxylic acid. Given on page no.371 ncert part 2 chemistry----first paragraph

0Thank You

ANSWER

What is native protein

Posted by Mahesh Gautam 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Aastha Agarwal 8 years, 2 months ago

Protien found in a biological system with a unique three dimensional structure and biological activity is called native protien . Means we can say that protien in its original state before denaturation

1Thank You

ANSWER

Why should test for unsaturated compound in practical file

Posted by Akash Gujjar 8 years, 2 months ago

CBSE > Class 12 > Chemistry