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Can anyone tell me Amine notes link for neet preparation

Posted by Khushi Singh Ladwal 3 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Anuj Mishra 3 years, 3 months ago

I can

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If a current of 0.5ampere flows through a metallic wire for 2 hours.then how many electrons would flow through the wire

Posted by Bindika Rai 3 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 3 years, 3 months ago

We know that current = 0.5 ampere , time= 2h

Q (coulomb) = 1 (ampere) {tex} \times {/tex} t (sec)
= 0.5 ampere {tex} \times 2 \times 60 \times 60{/tex}
= 3600 C
A flow of 1 F, i.e. 96500 C is equivalent to flow of 1 mole of electrons
i.e. {tex}6.023 \times {10^{23}}{/tex} electrons
3600 C is equivalent to flow of electrons {tex} = \frac{{6.02 \times {{10}^{23}}}}{{96500}} \times 3600 = 3.246 \times {10^{22}}{/tex}electrons

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Choudhary_Ankush_Sehal_7077 Jaat 3 years, 2 months ago

I=0.5 t=2h=2×60×60=7200 I=q/t Where Q=ne So I=ne/t 0.5=n×1.6×10*-19/7200 3600×10*22/16 2.25×10*22

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Ch2cl2.. common name ?? It should be methylidene chloride but in ncert book it is methylene chloride

Posted by Riya Soni 3 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

⠀ 3 years, 3 months ago

Methyl is a single carbon atom chain, and thus it makes no difference to use methylidene and methylene. As a common name, we call it methylene mostly.

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Suggest a metal that can be used for cathodic protection of iron against rusting

Posted by Chuesha Marak 3 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Sakshi Jonwal 3 years, 2 months ago

Zinc this method is called sacrificitial as zinc sacrifice for iron to protect from rusting .

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Ankit Sharma 3 years, 3 months ago

A metal which is more electropositive than iron such as Al , Zn , Mg can be used in cathodic protection of iron against rusting.

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What is square close packing

Posted by Narinder Kumar 3 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Narinder Kumar 3 years, 3 months ago

What are tetrahedral and octa hedral voids

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Alcohols are weaker acids than water. Why?

Posted by Yash Raj 3 years, 3 months ago

CBSE > Class 12 > Chemistry

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A Galvanic cell consist of a metallic zinc plate emerged in 0.1 M zinc nitrate solution and a lead plate in 0.02 M lead nitrate solution calculate the EMF of cell at 25 degree Celsius

Posted by Vivek Yadav 3 years, 3 months ago

CBSE > Class 12 > Chemistry

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Give some good and interesting topics for chemistry investigatory project for class 12.

Posted by Aditi Chauhan 3 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Khushi Singh Ladwal 3 years, 3 months ago

Amines, colloids and biomolecules

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The rate of formation of nitric oxide in the following reaction is 3.6 mol l_1 s_1 4NH3+5O 2 _ 4No + 6H2O

Posted by Vandana Kumari 3 years, 3 months ago

CBSE > Class 12 > Chemistry

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A solution of sucrose (molar mass is 342 kg )is prepared by dissolving 68.4 of its per litre of solution what is the osmotic pressure at 300k

Posted by Sehaj Singh 3 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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Ch2ch3 compound name

Posted by Raghul S 3 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Ganesh Chinna 3 years, 3 months ago

Ethyl (incomplete chain)

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Aseem Mahajan 3 years, 3 months ago

Ethyl [Incomplete chain]

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Why we do not use synthetic fuels like hydrazine to make electricity instead of thermal power plants??

Posted by Aseem Mahajan 3 years, 3 months ago

CBSE > Class 12 > Chemistry

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Convert ethane to 2,4-Dinitrophenylhydrazone

Posted by Aseem Mahajan 3 years, 3 months ago

CBSE > Class 12 > Chemistry

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Name the iupac name of ch3-c-br-ch2ch2ch3-ch2ch3

Posted by Harman Singh 3 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Samiullah Shaikh 3 years, 3 months ago

3- Bromo- 3- methyl- hexane

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Calculate the osmotic pressure of 0.1 molar of k4fecn6 at 27 degree Celsius assuming that k4fecn6 is 50 % dissociated

Posted by Jay Prakash 3 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

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What is osmotic pressure in detail explain

Posted by Anish Malik 3 years, 4 months ago

CBSE > Class 12 > Chemistry

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How would you determine the standard electrode potential of the system Mg2+|Mg

Posted by Upendra Bhandari 3 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Kunal Thakur 3 years, 4 months ago

Combined it with standard hydrogen electrode(SHE).Because of Ecell * for SHE is zero.

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a compound from hexagonal close packed the structure what is the total number of words in 0.5 mole of it how many of these are tetrahedral void

Posted by Nitin Goyal 3 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Jay Prakash 3 years, 4 months ago

Tetra hedral void =avogadro no.

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Jay Prakash 3 years, 4 months ago

Total no of voids = 9.033* 10^23

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Nitin Goyal 3 years, 4 months ago

Voids not words

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What is electrophilic aromatic substitution reaction

Posted by Anushka Joshi 3 years, 4 months ago

CBSE > Class 12 > Chemistry

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Mallikarjuna Appa 3 years, 4 months ago

Electrophilic aromatic substitution is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by an electrophile.

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An Organic compound (A) with molecular formula C,H,NO on heating with Br₂ and KOH forms a compound (B). Compound (B) on heating with CHCI, and alcoholic KOH produces a foul smelling compound (C) and on reacting with C.H.SO₂Cl forms a compound (D) which is soluble in alkali. Write the structures of (A), (B), (C) and (D).

Posted by Virendra Bankey 3 years, 4 months ago

CBSE > Class 12 > Chemistry