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What is a chiral centre

Posted by Rohit Bhowmick 7 years, 8 months ago

2 answers

Rishabh Sahu 7 years, 8 months ago

Chiral centre is a centre ( atom or ion) about which interchange of 2 or more groups' positions gives stereoisomers which are different or have different sterochemistry and stereochemical properties.

0Thank You

Siddharth Khandelwal 7 years, 8 months ago

Chiral centre is the carbon atom whose all 4 valencies are fulfilled by 4 different atoms or compounds

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If the density of copper metal is 8.95 and radius is 127.8 .Is this unit cell simple cubic ,bcc ir fcc

Posted by Pritam Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

updated sullybus if class 12 and 11 che

Posted by Aaditya Verma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the use of agar agar jelly or gelatin in a salt bridge in a galvanic cell??

Posted by Rameswary Behera 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

The freezing Point depression of 0.1 molal solution of acetic acid in benzene is 5.12k kg /mol. What conclusion can you draw about the molecular state of acetic acid in benzene

Posted by Rekha Kumari 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

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A sample of drinking water was found to be severely contaminated with chloroform supposed to be a carcinogen.The level of contaminant was 15ppm (by mass) (1) express this in percent by mass (2) determine the molarity of chloroform in the water sample

Posted by Vikram Singh Maurya 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is coordination number

Posted by Muskan Srivastave 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Shubham Mamgain 7 years, 8 months ago

the number of atoms or ions immediately surrounding a central atom in a complex or crystal

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Kalas Sahu 7 years, 8 months ago

Coordination number is the nearest neighbour of a particle

2Thank You

Mehandi Saini 7 years, 8 months ago

The maximum number of atoms which can touch an atom

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How do substance like Carbon dioxide and water move in and out of the cell? Discuss

Posted by Vatsala Rai 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is polyvinylchloride

Posted by Krishna Chauhan 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

Polymer of monomer unit vinyl chloride. Cl-CH2=CH2-Cl

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ANSWER

Bio molecular

Posted by Keshav Raj 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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A well known mineral fluoride is chemically calcium chloride.It is known in 1 unit cell of this mineral there are 4 ca2+ ion and 8 F- ion and that ca2+ are arranged in fcc lattice.The F- ions filled all tetrahedral holes in the fcc of cu2+ ions. The edge length 5.46 x 10-8cm.density is 3.18g/cm3 . Use this to calculate NA

Posted by Aayushi Singh 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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A compound is formed by two elements X and Y Atoms of the element Y (as anions) make ccp and those of element X (as cations) occupy all the octahedral voids. What is the formula of the compound

Posted by Pushpendra Singh 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohd Khan 7 years, 8 months ago

X:Y

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Why quard glass are amorphous solid

Posted by Gaurav Rathore 7 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansee Saini 7 years, 8 months ago

Because their constitutes particles are irregular fashion

0Thank You

Kunal Malik 7 years, 8 months ago

Because it show supercooled/pseudosolid property therefore quard glass melt/flow from one part to another part and show irregular arrangements of particles and which is shown by amorphous solid

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What weight of Na2Co3 of 95%purity would be required to neutralise 45.6 ml of 0.235N acid

Posted by Vishnu Tiwari 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

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Difference bw tetrahedral & octahedral voids.

Posted by Niharika Srivastav 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Soni Mahto 7 years, 8 months ago

The void is formed by 4 spheres 3 in 1 layer and the 4th in the next layer is known as tetrahedral void Andthe void is formed by six spheres 3 in one layer and other in next layer

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ANSWER

Aap log Mai se koi cgpet de rahahai Kya??

Posted by Aditi Shukla 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Aap log Mai se koi jee Diya Hai kya

Posted by Aditi Shukla 7 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Aditi Shukla 7 years, 8 months ago

Sorry but why?

1Thank You

Vishnu Tiwari 7 years, 8 months ago

Write the question again

2Thank You

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Plz tell me why N doesn't form N2O5???

Posted by Aditi Shukla 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Aditi Shukla 7 years, 8 months ago

Thanks ?

1Thank You

Shubham Yadav 7 years, 8 months ago

Becuse it can't be stable if it can form n2o5

4Thank You

Aditi Shukla 7 years, 8 months ago

Plz help??

3Thank You

ANSWER

Why freezing point of solution is lower than that of solvent?

Posted by Preeti Chahar 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Kunal Malik 7 years, 8 months ago

It is due to property of depression in freezing point as when non volatile solute is added it is difficult for solvent particles to get attach for freezing because non volatile solute is present in them therefore to attain a dynamic equilibrium of solid liquid temperature decreases so freezing point decreases ?

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A compound of X and Y has equal mass of them,if their atomic weights are 30 and 20 respectively. Find Molecular formula of that compound

Posted by Kapil Dev Biswas 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

what is peptization?

Posted by Vineet Kumar Gupta 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Vineet Kumar Gupta 7 years, 8 months ago

hahaha ☺

0Thank You

Divya Sen 7 years, 8 months ago

Not actually..but so nice of you to say that vineet?

0Thank You

Divya Sen 7 years, 8 months ago

peptization it may be defined as a process of converting a precipitate into colloidal sol by shaking it with dispersion medium in the presence of small amount of electrolyte.

1Thank You

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what is secondary structure of protiens ?

Posted by Divya Sen 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Vineet Kumar Gupta 7 years, 8 months ago

No problem divya . always there for your help

0Thank You

Divya Sen 7 years, 8 months ago

Thanks vineet

0Thank You

Vineet Kumar Gupta 7 years, 8 months ago

alpha-helices Within the long protein chains there are regions in which the chains are organised into regular structures known as alpha-helixes and beta-pleated sheets. These are the secondary structures in proteins. These secondary structures are held together by hydrogen bonds.

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ANSWER

how to convert Methanol into ethanoic acid

Posted by Divya Sen 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Vineet Kumar Gupta 7 years, 8 months ago

mention not ☺

0Thank You

Divya Sen 7 years, 8 months ago

Oh thanks vineet☺

0Thank You

Vineet Kumar Gupta 7 years, 8 months ago

CH3OH (add HBr) -- CH3Br (ADD KCN ) -- CH3CN (HYDROLYSIS) - CH3CONH2 (OH- OR H+) -- CH3COOH

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ANSWER

what are imp characteristics of adsorbtion ?

Posted by Vineet Kumar Gupta 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Divya Sen 7 years, 8 months ago

You are welcome vineet

0Thank You

Vineet Kumar Gupta 7 years, 8 months ago

thank you divya

0Thank You

Divya Sen 7 years, 8 months ago

It's highly selective in nature,its a spontaneous process,it is exothermic

2Thank You

ANSWER

how to solve problems based on pka value ?

Posted by Vineet Kumar Gupta 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

Please specify the chapters which its related to ionic eqbm , electrochemistry or organic data comparison based.

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Why AgBr show both defects frenkel and Schottky defect?

Posted by Aanshu Kumar 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

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why we called amorphous solid as super cooled liquid?

Posted by Shaily Ameta 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Aastha Saini 7 years, 8 months ago

Because it has tendency to flow through very slowly

3Thank You

ANSWER

In CaF2 crystals, Cà2+ ions are present in FCC arrangement calculate the number of F- ions in unit cell.

Posted by Vaibhav Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

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1.25 gram of oil is dissolved in 95 gram of benzene with boiling point of 80.31 degree Celsius determine molecular weight of the component given KB is equal to 2.53 boiling point pure benzene is equal to 80.10 degree Celsius

Posted by Vikramjit Singh Dhillon 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How to make structure m-nitrophenol

Posted by Shristi Massey 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

Draw benzene ring ,add a nitro group , then add an OH group at its meta position ,both clockwise and anti clockwise acceptable. by meta it means next to next position.

1Thank You

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