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

Due to metal excess defect anionic vacancies are formed inside the solid, these vacancies are filled out by isolated metal electron(removed during formation of compound) and come to be known as F- Center. F center contribute colour to the solid.

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What is oxidation number of ethane-1,2-diamine ?

Posted by Arpita Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Tarun Goswami 7 years, 2 months ago

0 Bcs it is a neutral ligand

3Thank You

Lakshmi Kumari 7 years, 2 months ago

Oxidation no. Of ethane-1,2-diamine is 0

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Write electrolysis of aqueous AgBr using Silver electrode and what is at Anode and Cathode and in the solution write them.

Posted by Amir Suhail 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

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When red phosphorus is prepared by white phosphorus then why doesn't it glows in dark ??

Posted by Neha Gupta 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the effect of PH on chromate and dichromate ion ????

Posted by Neha Yadav 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Shreya Bhardwaaj 7 years, 2 months ago

Chromate ion turns orange while adding acid in it and dichromate with base changes to yellow

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ANSWER

Kya exam mai log table sheet milti hai kya

Posted by Shobha??? Kumari 5 years, 8 months ago

CBSE > Class 12 > Chemistry

5 answers

E S 7 years, 1 month ago

It depend on school to school.so to be on safe side we should take our own log table sheet in the exam

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Tarun Goswami 7 years, 2 months ago

Haa milti hai 1room k liye ek

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Rahul Sehlangia 7 years, 2 months ago

Sorry we can use log table

2Thank You

Rahul Sehlangia 7 years, 2 months ago

[Tanx+1+√2tanx]+c

0Thank You

Anshika Dhaka 7 years, 2 months ago

Log value is given with question...

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ANSWER

How to learn P-block reactions ? Is it necessary to learn all reactions ?

Posted by Md. Umar 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Tarun Goswami 7 years, 2 months ago

Yes Rxns 5-6 marks dila dengi

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Shreya Bhardwaaj 7 years, 2 months ago

Obviously it is

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ANSWER

How to learn reactions of P block? Is it necessary to learn all reactions??

Posted by Nawed Saqlaini 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

why can't oxygen form tetrafluoro halides?

Posted by Arya Ranjith 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why sodium lauryl sulphate is harmful for us??????

Posted by Anu Deepshikha 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What you are taking after class 12 which branch

Posted by Ayush Parija 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Acetylation ofaniline reduces its activating effect.Give reason.

Posted by Dayaram Gupta 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ayush Parija 7 years, 2 months ago

Because lone pair in nitrogen is involved in resonance co group

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Prove huckel rule by mot and also state hybridization of ph3

Posted by Ayush Parija 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

G K 7 years, 2 months ago

Oh sorry vo drago's rule h na ki dragon.... ??‍♀️...... Acc. to ths rule atoms below O2 nd N2 in their gps (S, Se, Te, Po...nd... P, As, Si, Bi) when get bonded with another atom whose Electro-vity < 2.5...... , then these molecles involve “NO” hybridisation....... H2S is anothr ex. of no hybridisiton.....

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G K 5 years, 8 months ago

Huckle rule... mot????‍♀️....... ..... PH3 ka hybridisation sp3 hona chahiye but hota ni h.... Koi hybridisation ni hota isme...... Kuch kuch yaad rha h...... I think kuch dragon rule ki vajah se.......1 min me abhi check jrke btati hu 11th ne likhvaya tha khi.......

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-I effect series between aldehyde ketone and carboxyllic acid

Posted by Kajal Chauhan 7 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the total volume of atom present in a face center cubic unit cell of a metal of radius R is

Posted by Shivam Tiwari 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Aisha Gupta 7 years, 2 months ago

Volume of atom is a const term i.e 4/3πr³ the thing which varies is packing efficiency depend upon the type of crystal lattice.

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ANSWER

Basicity order of amenes.

Posted by Aditya Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Shobha??? Kumari 7 years, 2 months ago

24.3

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ANSWER

Why the orbital angular momentum is quenched ? {reference page no.221 on part 1 chemistry }

Posted by Rajan Pathak 7 years, 2 months ago

CBSE > Class 12 > Chemistry

4 answers

Shreya Bhardwaaj 7 years, 2 months ago

Due to crystal field theroy d orbital split into two energy level t2g and eg so due to quenching their angular moment is 1

1Thank You

Shreya Bhardwaaj 7 years, 2 months ago

Wait i will tell u

0Thank You

Rajan Pathak 7 years, 2 months ago

In chapter d and f blocks On page no.221 in part 1 chemistry class 12

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Shreya Bhardwaaj 7 years, 2 months ago

Where it is

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Difference between ferromagnetic and antiferromagnetic

Posted by Prince Goyal 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Sejal Vichare 7 years, 2 months ago

Ferromagnetic means having the magnetic properties and antiferromagnetic does'nt having the magnetic properties

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Shreya Bhardwaaj 7 years, 2 months ago

It is a major difference

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Shreya Bhardwaaj 7 years, 2 months ago

Ferro they can be found in material having magnetic domains in the same direction and in anti it will be in opposite direction

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ANSWER

What is the role of tert butyl peroxide in polymetisation

Posted by Abhishek Sharma 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Shreya Bhardwaaj 7 years, 2 months ago

It act as a catalyst to initiate the reaction

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ANSWER

What is covalent nature

Posted by Himanshi Malik 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Shreya Bhardwaaj 7 years, 2 months ago

No worry

1Thank You

Himanshi Malik 7 years, 2 months ago

Ok..... thanks

1Thank You

Shreya Bhardwaaj 7 years, 2 months ago

Sharing of electrons between atom

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The susceptibility of a magnetic substance is -2×10 the power-6 . Name the magnetism present in it

Posted by Neha Prasad 7 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Amandeep Kumar 7 years, 2 months ago

Daimagnetic in nature

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Anjali Yadav 7 years, 2 months ago

Susceptibility >0 diamagnetism

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ANSWER

Law of mass action

Posted by Malaya Malaya 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohd Anas 7 years, 2 months ago

E=mc°

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Can you store copper sulphate solution in a zinc pot

Posted by Sunil Meena 7 years, 2 months ago

CBSE > Class 12 > Chemistry

4 answers

Shreya Bhardwaaj 7 years, 2 months ago

No becoz it show reaction with it

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Mohit Sepat 7 years, 2 months ago

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Rohit Baneta 7 years, 2 months ago

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Shobha??? Kumari 7 years, 2 months ago

Sulphate can react with zinc

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Which is more basic ethane, ethene, ethyne

Posted by Ritu Yadav 7 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Ritu Yadav 7 years, 2 months ago

Yr ethyne more acidic h

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Shobha??? Kumari 7 years, 2 months ago

Sorry basic

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Shobha??? Kumari 7 years, 2 months ago

Ethyne is more badic

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Phenol to alcohol

Posted by Dharmesh Verma 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

G K 7 years, 2 months ago

Phenol kudh ek alcohol h bro.....

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Why is CO the strongest field ligand?

Posted by Atharva Adsule 7 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 7 years, 2 months ago

According to Ligand field theory ; the π-acceptor ligands are the stronger ligand and the π-donating ligand is a weak field ligand. here, we know that NH₃ is a π-donor in comparison to the CO which is a π-acceptor ligand.
The field created by the Ligand CO is stronger than the ligand NH₃. Consequently the splitting of d-orbital created by CO is larger than the NH3. Hence CO is more stronger ligand than the NH₃.

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How to convert ethane nitrite to ethanol

Posted by Omprakash Singh 7 years, 2 months ago

CBSE > Class 12 > Chemistry