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Why do amines react as nuceophiles?

Posted by Vhaawana Lwaghoon 6 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Ashish Kr. Yadav 6 years, 2 months ago

Because it has loan pair on N atom

0Thank You

Yogita Ingle 6 years, 2 months ago

A nucleophile is a compound which donates electron pair to electron deficient species.
Nitrogen in amines have a lone pair of electrons which they can donate , that is why they act as nucleophile.

1Thank You

Vivek Shekhawat 6 years, 2 months ago

Because nitrogen have a lone pair present in it

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ANSWER

Which type questions arise in viva plz batao

Posted by Rajnish Chauhan 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Dev Gurjar 6 years, 2 months ago

Acidic and baseic

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Abhishek Kishan 6 years, 2 months ago

From inside the book and also from the experiment you have done in lab

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ANSWER

Which chapter is good for viva

Posted by Subham Sahu 6 years, 2 months ago

CBSE > Class 12 > Chemistry

5 answers

Nirmal Nithish 6 years, 2 months ago

Surface chemistry

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Akriti Trivedi 6 years, 2 months ago

General isoation, surface chemistry, biomolecules and polymers like theoretical chapters. Try to study it from ncert book of chemistry.

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Râhūl ;-),?? 6 years, 2 months ago

Prepare kinetics

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Subham Sahu 6 years, 2 months ago

What

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A A 6 years, 2 months ago

It is that series of sports in which one team finally wins and rest lose the matches

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ANSWER

P-block me seh questions kha se or kis type me put hota h exam me.?

Posted by Râhūl ;-),?? 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Shivani Thakur 6 years, 2 months ago

On the reactivity... Acidic strength...and other chemical properties....mostly...

4Thank You

ANSWER

Is group15 from p-block remove?????

Posted by Abhay Mishra 6 years, 2 months ago

CBSE > Class 12 > Chemistry

5 answers

Ashish Kr. Yadav 6 years, 2 months ago

Ji Haaa

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Abhishek Kishan 6 years, 2 months ago

Yes

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Kriti Sharma 6 years, 2 months ago

Yes

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Shivani Thakur 6 years, 2 months ago

Yuup

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Rishabh Gupta 6 years, 2 months ago

Yes

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ANSWER

can anyone give me ans of chemistry lab manual project observation table ans -study of digestion of starch by salivary amylase and effect of ph and temp on it

Posted by Sahil Kumar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Density of water

Posted by Ankita Khatri 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Shivani Thakur 6 years, 2 months ago

Ysss..1g/cm3

1Thank You

Yogita Ingle 6 years, 2 months ago

It is the weight of the water per its unit volume, which depends on the temperature of the water.

The density of water is around approximately about 1 gram/ cubic centimetre (1 g/cm³).

2Thank You

ANSWER

The density of water vapour at 327.6atm and 776.4k is 133.2gm/dm³ determined the molar volume vm of water and The compression

Posted by Surbhi Shreya Singh 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Justify the role of tert-butyl peroxide in the polymerization of ethene.

Posted by Mahroo Naziri 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Vinay Gautam 6 years, 2 months ago

Act as catslyst

1Thank You

Ankita Khatri 6 years, 2 months ago

Act as catalyst

1Thank You

ANSWER

Can you please explain CFT theory in short which i can easily get understand?

Posted by Mahroo Naziri 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Anshu Dwivedi 6 years, 2 months ago

It determine the weak and atrong field ligand with their crystal field spilliting energy of octahedral and tetrahedral complexes

1Thank You

ANSWER

Physiorption decrease with increase intepertaure while chemisorption increase?Give reason

Posted by khuh****@***** 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Sukirti Sharma 6 years, 2 months ago

in physiosorption the molecules are bonded with weak vanderwaal forces so the increase in temperature leads to the breakage of bonds so physiosorption decrease with increase in temperature whereas in chemisorption there are chemical bonds so the energy gain by increase in temperature is first utilised in forming the bonds further increase in temperature,the kinetic energy increases nd molecules start leaving the surface so chemisorption first decrease nd then increase with increase in temperature

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During adsorption enthalpy and entropy decrease?Why?

Posted by khuh****@***** 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ankita Khatri 6 years, 2 months ago

Enthalpy decreases because there is loss of surface energy and entropy decreases because now the absorbent particles are not so free and random state decares

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During adsorption ∆H is always negetive?why

Posted by khuh****@***** 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What could be the possible marks distribution of units in chemistry ??

Posted by Gungun Goyal 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is difference between order and molecularity

Posted by Shailendra Kumar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

4 answers

Vinay Gautam 6 years, 2 months ago

Yeh u r right

0Thank You

Raunak Kumar 6 years, 2 months ago

Order is an experimental concept and molecularity is a theoretical concept

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Shivani Thakur 6 years, 2 months ago

Noooops.,........molecularity is the no.of reacting species!!!

0Thank You

Sumit Chandel 6 years, 2 months ago

Order is experimental where as molecularity is therotical

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ANSWER

Conversion of benzoic acid to phenol

Posted by Atul Singh Rajput 6 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Gaming Zone 6 years, 2 months ago

add LiAlH4 and it will directly convert into phenol

2Thank You

Shivani Thakur 6 years, 2 months ago

Here's- using a catalyst---c14h10cuo4 i.e copper benzoate....it could be done?☺

0Thank You

Harendra Singh 6 years, 2 months ago

1:- COOH + NH3 O=C-NH2 2:- 4Br2+ NaOh= aniline 3÷- sandmayer's se cholo benzene 4:- NaOh ke sath reaction at 600k and 300atm 5:- phenol is prepared

3Thank You

ANSWER

How much electricity is required to carry out the reduction of one mole of pbo2

Posted by Davinder Kaur 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What do you understand by double helix structure of DNA?

Posted by Niyati Dawar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Anshu Dwivedi 6 years, 2 months ago

It is a linearly structure. Which is taken in secoundry structure of protein. It is obtained by shape of polypeptide linkage.

1Thank You

ANSWER

basic structural difference between starch nd cellulose????

Posted by Sukirti Sharma 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Shivani Thakur 6 years, 2 months ago

Basic difference is due to branched nd linear structure,,,,,...!

3Thank You

Yogita Ingle 6 years, 2 months ago

Properties	Starch	Cellulose
Alpha/Beta	2 types of alpha glucose	1 type of beta glucose
Connection	By alpha linkage	By beta linkage
Digestion	Easily digested	Difficult to digest
Solubility	Dissolves in warm water	Does not dissolve in water
Strength	Weaker than cellulose	Strong
Crystalline	Less crystalline	More crystalline than starch
Consumption	Can be consumed by humans	Cannot be consumed by humans
Linkage	Starch has alpha 1,4 linkage	Cellulose has beta 1,4 linkage
Uses	Plants use starch to store energy	Plants use cellulose to support structure

4Thank You

ANSWER

To determine one cation and one anion in unknown salt of m - Experiment

Posted by Anshuman Raj 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Shivani Thakur 6 years, 2 months ago

U just go through the...radicles given in ur mpracticle mannual....nd usme ni to net pr mil jayenge ..sare acidic or basic radicle..

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ANSWER

Give a chemical test to distinguish between phenol and benzoic acid

Posted by Mohd Ali 6 years, 2 months ago

CBSE > Class 12 > Chemistry

4 answers

Shivani Thakur 6 years, 2 months ago

Phenol on mixing anhydrous fecl3...vl give a blue -back colour...bt not vth benzoic acid...

1Thank You

Atul Singh Rajput 6 years, 2 months ago

Coupling reaction Formation of orange dye in phenol

1Thank You

Yogita Ingle 6 years, 2 months ago

Phenol and benzoic acid can be distinguished by ferric chloride test.

Ferric chloride test:

Phenol reacts with neutral FeCl₃ to form an iron-phenol complex giving violet colouration.

6C₆H₅OH + FeCl₃ →[Fe(OC₆H₅)₆]^3- + 3H⁺ + 3 Cl^-

But benzoic acid reacts with neutral FeCl₃ to give a buff coloured ppt. of ferric benzoate.

3C₆H₅OH + FeCl₃ → (C₆H₅COO)₃Fe + 3 HCl

0Thank You

Sukirti Sharma 6 years, 2 months ago

ferric chloride test phenol give violet color ppt with FeCl3 whereas benzoic acid give buff color ppt with FeCl3

1Thank You

ANSWER

Imp rxns in ncert for chp aldehyd keton and carboxlic acid

Posted by Vishavpreet Singh 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Sukirti Sharma 6 years, 2 months ago

1)distinguish 2)conversions 3)naming reactions

1Thank You

ANSWER

Butanoic to 1-chloro propane conversion

Posted by Shivam Sharma 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the value of A in the debyhuckel onasagar eqation

Posted by Akash Modanwal 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Chirag Sharma 6 years, 2 months ago

A vary from electrolyte to electrolyte For ex A is same for NaCl and KCl because they are 1:1 electrolyte Similarly it is same for MgCl2 and CaCl2 But different for NaCl and MgCl2

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ANSWER

Salt analysis

Posted by Adarsh Kumar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Shivani Thakur 6 years, 2 months ago

Yaas...salt analysis is the identification of cation nd anion in given unknown salt....by some basic nd acidic radicals.....

0Thank You

Sukirti Sharma 6 years, 2 months ago

salt analysis is basically finding out the cation nd anion in given salt

1Thank You

ANSWER

Sir after a week chemistry practical is in help

Posted by Prince Kumar Das 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

what is the role of silica in metalargy

Posted by Prashant Mishra 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Yuvraj Singh 6 years, 2 months ago

If the sulphide ore of copper contains iron, then silica (SiO2) is added as flux before roasting. Then, FeO combines with silica to form iron silicate, FeSiO3(slag).

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CrCl3.4H2O precipitates 1 mole of AgCl with AgNO3 solution.What is its primary and secondary valency

Posted by Karan Gill 5 years, 11 months ago

CBSE > Class 12 > Chemistry