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How is work a manifestation of energy

Posted by Shivam Gupta 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is the use of chromatography

Posted by Ankita Pal 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

~Vihaan ~ 7 years, 2 months ago

Chromatography is used to figure out the relation of different mixtures with one another. It is very effective technique to test the purity of the sample. The amount of mixture present in a sample can be calculated by using chromatography. Chiral compounds which are very similar in molecular weight, elemental composition, and physical properties and differ only in optical isomers can be separated using chromatography. It is used for the separation of mixture of compounds. Paper chromatography is particularly very effective in detection and separation of mixture of compounds.

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Structure of 2 -2 dimethlyhexane

Posted by Sahil Khan 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Pragati Gola 7 years, 2 months ago

THE STRUCTURE IS: CH3 CH3CH2CH2CH2-C-CH3 CH3

0Thank You

Pragati Gola 7 years, 2 months ago

CH3 | CH3-CH2-CH2-CH2-C-CH3 | CH3

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How to get full marks in chem !!???

Posted by Rohit Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Mahi Mahajan 7 years, 2 months ago

Just only by self study and practicing

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<font colour="red" size="6">Can i get imp question on thermo?</font>

Posted by Luv Kapoor 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Nancy Rajput 7 years, 2 months ago

yes take it from google or in this app given

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ANSWER

Mention the cause of formation of H–Bond

Posted by Divya Tripathy 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Abhishek Goyal 7 years, 2 months ago

Attraction between hydrogen and other more electronegative elements like flourine , sulphur,oxygen

1Thank You

Ushashi Chowdhury 7 years, 2 months ago

Due ti dipole

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Which element of s block doesn't react with water

Posted by Shruti Gupta 7 years, 2 months ago

CBSE > Class 11 > Chemistry

3 answers

Vicky Kumar 7 years, 2 months ago

Beryllium (Be) is the only alkaline earth metal that does not react with water. This is due to its small size and high ionization energy in relation to the other elements in the group.

5Thank You

Mamta Agrahari 7 years, 2 months ago

Magnesium

3Thank You

Praveen Kumar 7 years, 2 months ago

Litum

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How much corse will come in final exam of 11

Posted by Sachin Gurjar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Aman Kumar 7 years, 2 months ago

Whole syllabus

3Thank You

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What is emphirical formula

Posted by Rajat Marya 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Utsav Kumar Shukla 7 years, 2 months ago

It is the simplest whole number ratio of each type of atom in a compound.

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One litre of a sample of hard water contains 1mg of CaCl2 and 1 mg of MgCl2 . Find the total hardness in terms of parts of CaCO3 per 10^6 parts of water by weight.

Posted by Vicky Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is Syneresis and Occlusion

Posted by Vicky Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

For the reversible isothermal expansion of one mole of an ideal gas at 300 k from a volume of 10l to 20l find the value of ∆h is

Posted by Vikas Garg 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

is syallabus for 12th nxt year reducing??

Posted by Luv Kapoor 7 years, 2 months ago

CBSE > Class 11 > Chemistry

3 answers

Kavita Verma 7 years, 2 months ago

Really

0Thank You

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 2 months ago

yeah because some chapters are reduce from 12th nd added in 11th.

1Thank You

Aman Kumar 7 years, 2 months ago

Yeah,... I think so

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ANSWER

Maginta

Posted by Abhishek Kumar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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the degree of ionization of a 0.1M bromoacity acid soluton is 0.132 . calculate the pH of the solution and the PKa BROMOCITY ACID

Posted by Lalit Sonkar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the normal condition of temperature & Pressure?

Posted by Vijay Tripathi 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Mahi Mahajan 7 years, 2 months ago

Pressure =1atm and temperature =293k

3Thank You

ANSWER

Hydrogen bond is weaker or stronger than vanderwaals force

Posted by Sapna Sharma 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Anmol Yadav 7 years, 2 months ago

Stronger even it is the strongest

1Thank You

Sakshi Kharra 7 years, 2 months ago

It is stronger than van der waals force

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ANSWER

Unlike In+, Tl+ is more stable with respect to disproportionation. Explain

Posted by Aman Dahal 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

suppose two elements x and y combine to form two compounds x y 2 and x2y3. when 0.1 mole of XY2 weighs 10g and 0.09 mole of X3Y2 weighs 9g the atomic weights are

Posted by Ananya Shukla 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

what is inductive effect??

Posted by Gagan Aditya 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is the weight of 1 molecule of H^2

Posted by Manasvi Agrawal 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is the new syllabus of chemistry

Posted by Abhishek Pandey 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Sahil Srivastava 7 years, 2 months ago

solid state is also added Pandey ?

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What is electrolytic cell

Posted by Piyush Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Vijay Tripathi 7 years, 2 months ago

Electrolytic cell is the cell which convert the electrical energy to chemical energy.

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ANSWER

What is a electrolysis

Posted by Piyush Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Vijay Tripathi 7 years, 2 months ago

It is a process through which water molecule are separated in O2 and H+ ion.

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ANSWER

Why electon not fall in nucleus ?

Posted by Siddhant Gurjar 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Sajid Ali 7 years, 2 months ago

If electron fall into the nucleus then it will destroy. But it is does not happen

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Nikhil Dwivedi 7 years, 2 months ago

BcZ there is repulsion Btwn proton and electron which make it to not fall in nucleus

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ANSWER

What is electrolyte

Posted by Piyush Singh 7 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Aman Kumar 7 years, 2 months ago

Electrolyte is a substance which produces the electrically conducting solution when get dissolved in polar solvent such as water.... Examples :- Na, Mg, Ca,... etc..

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How to identify whether an reaction is electrophilic substitution /nucleophilic substitution and electrophilic addition/nucleophilic addition ?

Posted by Santosh Tammagol 7 years, 2 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Why do the C-C bonds rather than the C-H bonds break during the pyrolysis of alkanes?

Posted by Riya Pawaria 7 years, 2 months ago

CBSE > Class 11 > Chemistry

2 answers

Shivshant Upadhyay 7 years, 2 months ago

Yes this is right.

1Thank You

Ishu Miglani 7 years, 2 months ago

C-H. It is because the bond length between Carbon and Hydrogen is smaller (Hydrogen radii is smaller that's why) than between Carbon and Carbon, so more energy is needed for atomization as the effective nuclear charge on the bonded pair of electrons will be greater

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Who us the father of chemistry

Posted by Faizan Khan?? 7 years, 2 months ago

CBSE > Class 11 > Chemistry