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

The reaction which take place in the presence of electrophile are called electrophilic substitution .and the reaction which take place in presence of nucleophile are called nucleophilic substitution

0Thank You

ANSWER

Is the conductibility of ionic solids due to the presence of ions

Posted by Puja Malik 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Mohit Sepat 7 years, 3 months ago

Yes conductivity is due to ions .more the ions,more is the conductivity

0Thank You

G K 7 years, 3 months ago

in solid state ionic compounds do not conduct electricity. ..... in fused state, it conduct electricity....

0Thank You

ANSWER

What is carbon bond

Posted by Muskan Koundal 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Mohit Sepat 7 years, 3 months ago

Bond of carbon atom to other elements like hydrogen

0Thank You

Arslaan Panwar 7 years, 3 months ago

Bond of carbon

0Thank You

ANSWER

Bhai chemistry me first term ka chapterwise weightage kitna hai

Posted by Ayush Anand 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Two elements A and B form compound having molecular formula a b 2 and a before when dissolved in 90 gram of benzene 1 gram of a b to lower the freezing point by 2.3 Kelvin where where is 1.0 gram of a b followers it by 1.3 Kelvin the molar depression constant for benzene is 5.1 kg calculate atomic mass of a and b

Posted by Utkarsh Mishra 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Account for lanthanoid contraction

Posted by Shreya Ganesh 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Deepak Jindal 7 years, 3 months ago

The regular decrease in size of elements of lantanoid series on moving left to right...

0Thank You

ANSWER

Account for the following 1.lanthanoid contraction

Posted by Shreya Ganesh 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What r the important topics in p block elements

Posted by Mohit Sepat 7 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Mohit Sepat 7 years, 3 months ago

Thanks

1Thank You

Aditi _Chouhan_ 7 years, 3 months ago

May this help u

0Thank You

Aditi _Chouhan_ 7 years, 3 months ago

P-block : Physical properties of each group (Atomic & ionic radii, Ionization enthalpy, Electronegativity, boiling point, etc) Chemical properties such as oxidation states, covalency, etc of elements of each group in general

0Thank You

ANSWER

What are the important topics in coordination compound

Posted by Mohit Sepat 7 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Mohit Sepat 7 years, 3 months ago

Thanku

0Thank You

Aditi _Chouhan_ 7 years, 3 months ago

May this answer help u

1Thank You

Aditi _Chouhan_ 7 years, 3 months ago

The most important concepts in coordination compounds are names and denticity of different ligands, VBT, CFT, Nomenclature, and Isomerism. But I advice you to study the whole chapter and not only the imp. concepts because this topic has variety of questions and concepts which were witnessed in the previous examinations.

1Thank You

ANSWER

Why AgBr shows both frenkel and shottkey defect????????

Posted by Prashant Bhardwaj 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Mohit Sepat 7 years, 3 months ago

Schootky defect due to missing of ions from their lattice point.and frenkel defect occupy when missing ions occupy interstitial sites

2Thank You

Aditi _Chouhan_ 5 years, 8 months ago

I don't khow????? ??

2Thank You

ANSWER

White translucent waxy solid A exist in different allotropic form. A on reacts with concentrated NaOH gives a Rotten fish smell toxic gas B on passed through aqueous CuSO4 gives compound C which on hydrolysis gives back B. A on reacts with excess Cl2 gives a chlorinating agent D which on hydrolysis gives white fume E. Identify A, B, C, D, E write the equation involved.

Posted by Sunanda Naik 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is haloalkanes

Posted by Maruf Ansari 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Vikrant Nehwal 7 years, 3 months ago

Haloalkanes are the halogen derivative hydrocarbons having general formula CnH2nX.

0Thank You

Yogita Ingle 7 years, 3 months ago

Halo alkanes are the compounds containing halogen atom attached to the sp³ hybridized carbon atom of an alkyl group.
For example C₂H₅X (monohydro alkane)

0Thank You

ANSWER

Oxygen can also burn with fire???? Then

Posted by Anu Deepshikha 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Tushar Jaryal 7 years, 3 months ago

oxygen can't be burn any way as it is an oxidising agent and help other substance to burn by oxidizing them......

1Thank You

ANSWER

How to know the value of log 5*10^3/4

Posted by Sunanda Naik 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Srishti Khare 7 years, 3 months ago

First apply the property of log(m/n ) = logm-logn that will be equal to Log (5*1000) - log4 Apply log (mn) = logm + logn Log5+log 1000 - log4 Log 5+ log 10^3 - log 2^2 Apply log ( m^n) =nlogm Log5 +3log10 - 2 log 2 #log10 = 1 as base is also 10 Log5 +3 - 2log2 0.69 +3 -2(0.30) 0.7 +3 -0.6 3+0.1 =3.01

2Thank You

Amir Suhail 7 years, 3 months ago

3.096

1Thank You

ANSWER

How many types of unit cell in solid ?

Posted by Abhinav Tiwari 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Sangam Singh 7 years, 3 months ago

5 unit cell in solid

0Thank You

Rajat Dhull 7 years, 3 months ago

5 types:- FCC , BCC, Simple cubic, HCP, Edge centred.

0Thank You

ANSWER

Why ph value increases of aquous solution if acetic acid when we addea a animal charcoal ?

Posted by Manju Verma 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How will u differentiate b/w sols and emulsions?

Posted by Abrar Hameed 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohit Sepat 7 years, 3 months ago

Sols are dispersion of solid in liquid and emulsions are dispersion of liquid in liquid. Sols are quite stable and emulsions are less stable ..

1Thank You

ANSWER

What is meant by lanthanoid and actinoid contraction ?

Posted by Mohammad Kaleem 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

how many sigma bond 4 -methyl pheno.

Posted by Tarun Khan 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Nishant Dixit 7 years, 3 months ago

2Thank You

ANSWER

write mechanism of acid dehydration of propanol to propene.

Posted by Tarun Khan 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Diffrence between primary secondary tertarity alchol on the basis of oxodation and reduction with copper

Posted by Danish Iqbal 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Faraday law

Posted by R J 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Manoj Shukla 7 years, 3 months ago

Refer ncert

0Thank You

ANSWER

Kohrausch law

Posted by R J 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Aastha Sharma 7 years, 3 months ago

The limiting molar conductivity at infinite value is equal to the sum of molar conductivity of cation and anion in the solution

1Thank You

ANSWER

Which type of defect shown in AgCl when CaCl2 impurities are added in this

Posted by Shivanshu Rathour 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Bharvi Dani 7 years, 3 months ago

Impurity defect

0Thank You

ANSWER

Why nitrogen doesn't formed Pentahalides? Explain.

Posted by Arti Vishwakarma 7 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Ujjawal Priyadarshi 7 years, 3 months ago

In absence of d- orbital nitrogen cannot expand their octate so, it cannot accept more than 3 electron hence it can only form trioxide while other element of this group have d-orbital

2Thank You

ANSWER

HCL does not give an acidic solution in benzene ? Why

Posted by Aastha Sharma 7 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

G K 7 years, 3 months ago

0Thank You

Tushar Jaryal 7 years, 3 months ago

a solution is acidic when it has H+ ions ......since benzene is a nonpolar solvent ....so it do not form H+ so it do not have acidic properties and will not form of acidic solution......

2Thank You

ANSWER

What is the mechanism of sn2 reaction

Posted by Aditya Pratap Singh 7 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Please I has no go I want to make gf here please if any girl want to be my gf please answer me I will contact him and we chat friendly

Posted by Albert Einstein 7 years, 3 months ago

CBSE > Class 12 > Chemistry

6 answers

Tushar Jaryal 7 years, 3 months ago

Eyebrow style * ........ Einstein.... I love his theories (sorry for earlier msg)

0Thank You

Tushar Jaryal 7 years, 3 months ago

eyebrow style is my favourite scientist of his general as well as special theory of relativity.....

0Thank You

Amandeep Kumar 7 years, 3 months ago

Well said megha yadav

0Thank You

Akash Rounit 7 years, 3 months ago

Megha u r appsltly correct ,I salute your thinking,??????????

0Thank You

Princesses Kaur 7 years, 3 months ago

?????

1Thank You

G K 7 years, 3 months ago

Kiu Albert Einstein ka name khrab kr rhe ho......friends bnane h to facebook pe jau...yha kiyo sar maar rhe ho....this is study app...not a gf making app.....?

3Thank You

ANSWER

Method of nitration of benzene

Posted by Shivam Singh 7 years, 3 months ago

CBSE > Class 12 > Chemistry