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

When the mixture of two different aldehyde compounds react with dil. NaoH solution to form four possible product is called cross aldol condensation reaction.

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Sachin Gupta 4 years, 7 months ago

Two different aldehyde having alpha hydrogen gose for condensation form four different products....

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ANSWER

IUPAC name for CHCH3Cl2

Posted by Dharshini Rathinavel 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Shagun Singh 4 years, 6 months ago

1- chloro -3 - methybutane

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Sachin Gupta 4 years, 7 months ago

1,1-dichloroethane

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ANSWER

Please explain CANNIZZARO REACTION?

Posted by Sanu ? 4 years, 7 months ago

CBSE > Class 12 > Chemistry

3 answers

Sachin Gupta 4 years, 7 months ago

Aldehyde having no alpha hydrogen goes for disproportion reaction in presence of conc NaOH ( self oxidise and reduce) to form alcohal and sodium salt of carboxylic acid. Exp. HCHO and C6H5CHO

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Sibani Dash 4 years, 7 months ago

When 2 molecules of formaldehyde react with conc. NaoH solution which self oxidation as well as reduction to form methyl alcohol & sodium formate.

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Sanu ? 4 years, 7 months ago

Please jaldi batao kal mera paper hai

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ANSWER

Ethenal + propenal .cross aldol conversation

Posted by Kusum Rajwade 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the meaning of picking in a crystal and what are the types?

Posted by Sibani Dash 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How does 2-butanone reacts with Sodium hypochlorite

Posted by Lalit Patil 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Dr P.Jothi 4 years, 6 months ago

Cu/cu2+(0.25M)//Fe3+(0.05)/Fe2+(0.1)/pt.find emf of the cell

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Rahul Rawat 4 years, 7 months ago

2 butanonesodiumhypochlorite

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ANSWER

Resistance of a conductivity cell filled with 0.1M KCl solution is 100 ohm . If the resistance of the same cell when filled with 0.02 M of KCL solution is 520 ohm calculate the conductivity and molar conductivity of 0.02 M KCL solution the conductivity of 0.1 M KCL solution is 1.29S/m.

Posted by Megha . 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

When a coordination compound nicl2.6h2O

Posted by Anuj Kumar 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Cell

Posted by Anita Chaurasia 4 years, 7 months ago

CBSE > Class 12 > Chemistry

3 answers

Anita Chaurasia 4 years, 2 months ago

What is playing

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Vivek Chaurasia 4 years, 7 months ago

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Prabh Jot 4 years, 7 months ago

Structural and functional unit of life

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ANSWER

What is biomolecules?

Posted by Nandan Kumar 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Sourabh Golhani 4 years, 7 months ago

A biomolecule is a chemical compound found in living organisms. These include chemicals that are composed of mainly carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. Biomolecules are the building blocks of life and perform important functions in living organisms.

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Nishant Pandey 4 years, 7 months ago

Bio -living, molecules - molecule @ a molecule that is produced by living cells and helps them in sustaining their lives on earth.

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ANSWER

Highest dipole moment in which of these 1-CH2CL2 2-CHCL3 3-CCL4

Posted by Mr. Aryaa 4 years, 7 months ago

CBSE > Class 12 > Chemistry

4 answers

Muhammad Abuzar 4 years, 7 months ago

1>2>3

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Sachin Gupta 4 years, 7 months ago

CH2Cl2

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Mr. Aryaa 4 years, 7 months ago

Which 2 or 1

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Tarun Kumar 4 years, 7 months ago

2 one

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ANSWER

Is solid state , chapter 1st of chemistry deleted or not for board ?

Posted by Anita Bishnoi 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Tarun Kumar 4 years, 7 months ago

No only magnetic properties are deleted....

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Mr. Aryaa 4 years, 7 months ago

(Not whole chapter ) only some topics of chapter deleted

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ANSWER

What happens when methyl bromide is treated with sodium in the presence of dry ether?

Posted by Shreya Rajput 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Tarun Kumar 4 years, 7 months ago

Entane +NaBr

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Shweta Denis 4 years, 7 months ago

Ethane +NaBr is formed

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ANSWER

Which gas is harm due to the first world war. The soldiers have to roll their eyes ..

Posted by Ram Asheesh 4 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Âryãñ Pàñdêy Pandey 4 years, 7 months ago

Amonia

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ANSWER

In the compound of type pox³, p atom show multiple bonding of the type

Posted by Anshul Sharma 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

NF3 is weaker ligand than N(CH3)3 why?

Posted by Zahid Anwar 4 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Anubhav Sharma 4 years, 7 months ago

Because fluorine is much smaller in size and it accepts the electron to complete octate.

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ANSWER

How do you explain the absence of aldehyde group in the pentaacetate of D- glucose?

Posted by Sujata Murmu 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Megha . 4 years, 7 months ago

) Glucose reacts with hydroxylamine to form an oxine where as the penta acetate of glucose does not react with hydroxyl amine indicating the absence of free CHO group.

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Tapan Pandey 4 years, 7 months ago

Padh lo imp h??

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ANSWER

Glucose or socrose are soluble in water but cyclohexane or benzene ( simple six membered ring compound ) are insoluble in water. Explain.

Posted by Sujata Murmu 4 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Anubhav Sharma 4 years, 7 months ago

Cyclohexane and benzene are insoluble in water because they both are non-polar molecules and they do not form H-bond with water whereas water is highly polar group . Glucose and sucrose are soluble as they form H-bond with water.

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ANSWER

An aromatic compounds A on treatment with CHCl3 and KOH gives two compounds which gave the same product with Zn dust oxidation of B and C with molecular formula C7H6O2 Sodium Salt of gives D which may be obtained by distilling A

Posted by Manish Ghildiyal 4 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

In compounds like N-ethylamine .....what does N stands for

Posted by Drishty Kamboj 4 years, 7 months ago

CBSE > Class 12 > Chemistry

5 answers

Tapan Pandey 4 years, 7 months ago

Jetha bhai ethylamine ka mtlb hi yahi hota h jo aap bata rahe.

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Jetharam Prajapati 4 years, 7 months ago

N stands that ethyl group is attached with amine gro

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Tapan Pandey 4 years, 7 months ago

Oye! Answer:-. In N-ethylamine N stands for normal which means normal ethylamine.

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Tapan Pandey 4 years, 7 months ago

Oye dumbo ......kya bata rha tu ise

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P....... ........ 4 years, 7 months ago

In n-ethylamine compound n is amine group.

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ANSWER

Different between SN1 and SN2 reaction?

Posted by P....... ........ 4 years, 7 months ago

CBSE > Class 12 > Chemistry

5 answers

Tapan Pandey 4 years, 7 months ago

Aur ha miss kya h Mr. Bol

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Tapan Pandey 4 years, 7 months ago

Ha toh N mtlb normal ethylamine h ... N amine ki position represent krta h.

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P....... ........ 4 years, 7 months ago

Miss tp ji hamnee bhi to yahi bataya ki n amine group hai yaa usse amino group bolo aap

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Tapan Pandey 4 years, 7 months ago

Aur ha mechanism padh Lena confirm aati h

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Tapan Pandey 4 years, 7 months ago

In SN1 reaction formation of carbocation or carboanion takes place and in SN2 reaction substitution of anion or cation takes place.

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ANSWER

An element with molar mass 2.7×10-2 kg mol-1 forms a cubic unit cell with edge length 405 pm. If its density is 2.7×103 kg m-3, what is the nature of the cubic unit cell?

Posted by Prisha Rathore 4 years, 7 months ago

CBSE > Class 12 > Chemistry

3 answers

Prisha Rathore 4 years, 7 months ago

Its ok Tapan Pandey

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Tapan Pandey 4 years, 7 months ago

Mennu nii aata?

1Thank You

Nikhil Dwivedi 4 years, 7 months ago

d=ZM/a³Na. Z=da³Na/M. GIVEN,, a=405pm. a=4•05×10_¹⁰ M=2•7×10-² Na=6•023×10²³ d=2•7×10³ SOLUTION 2•7×10³×(4•05×10-¹⁰)³×6•023×10²³/ 2•7×10-² ANSWER=4.oo4.

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ANSWER

Last year question paper with answer

Posted by Pooja Pooja 4 years, 7 months ago

CBSE > Class 12 > Chemistry

2 answers

Tapan Pandey 4 years, 7 months ago

Because......Mai na type krne wala itna??

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Tapan Pandey 4 years, 7 months ago

See it on doodle

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ANSWER

Topic for project file class:12. Of chemistry.

Posted by Sanghavi Gangwar 4 years, 7 months ago

CBSE > Class 12 > Chemistry

3 answers

Nidhi Kashyap?? 4 years, 6 months ago

U will make project on Sn1, Sn1 reaction , naming rxn , colligative properties , solid state , colloid , or biomolecules etc.

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Prabh Jot 4 years, 7 months ago

Biomolecules

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Tapan Pandey 4 years, 7 months ago

Casin in types of milk is the best one.....

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ANSWER

Why is first ionisation enthalpy of Cu is higher than that of Na?

Posted by Mayur Handique 4 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Bharti Kaushik 4 years, 7 months ago

Because in case of sodium by losing electron , it acquires nobel gas configuration of neon but in case of copper after losing one electron, Cu achieves only fully filled d orbital. In case of copper nobel gas configuration not acquired. So, in case of sodium we have to provide lesser amount of energy as compared to copper.

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ANSWER

What happened when we iron reaction with Zn

Posted by P....... ........ 4 years, 7 months ago

CBSE > Class 12 > Chemistry