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ram najar kushwaha


{ City } lucknow
< Country > india
* Profession *
User No # 26023
Total Questions Posted # 2
Total Answers Posted # 12

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Total Views for My Questions # 56915

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Questions / { ram najar kushwaha }
Questions Answers Category Views Company eMail

What is difference between Base and Nucleophile?

 8 Organic Chemistry 30527

What is more polar hexane or cyclohexane. Why?

 4 Organic Chemistry 26388



Answers / { ram najar kushwaha }

Question { Dr Reddys, 25365 }

what is lithipone?


Answer

Lithipone- white pigment
- mixture of (BaSO4&ZnS)

Is This Answer Correct ?    21 Yes 3 No

Question { PH.D Interview, 20470 }

Mention the factors affecting solubility of compounds?


Answer

polarity,Temperature,lattice energy,etc.

Is This Answer Correct ?    2 Yes 1 No


Question { PH.D Interview, 20470 }

Mention the factors affecting solubility of compounds?


Answer

Lattice energy,
solvation energy,
polarity,
temperature

Is This Answer Correct ?    2 Yes 1 No

Question { Cipla, 38392 }

The Name Benzene was Proposed By?


Answer

Eilhard Mitscherlich (7 January 1794 – 28 August 1863)

Is This Answer Correct ?    3 Yes 4 No

Question { Cipla, 28405 }

Number of Sigma Bonds Present in Benzene are same as ..?


Answer

No. of Sigma bonds present in Benzene are same as Borazine
(inorganic Benzene).

no. of sigma bonds in Benzene= 12 (C6H6)
no. of sigma bonds in Borazine= 12 (B3N3H6)

Is This Answer Correct ?    34 Yes 2 No

Question { Bluepin, 18765 }

Trimethylamine is a pyramidal molecule. What is the
hybridization at nitrogen?


Answer

N atom have 3 sigma bonds + one lone pair electron.
Hence hybridisation at N atom - sp3.

Is This Answer Correct ?    20 Yes 4 No

Question { 11482 }

What kind of bonds link amino acids?


Answer

Peptide bonds

Is This Answer Correct ?    3 Yes 1 No

Question { 6352 }

What is a semi-benzene?


Answer

Cyclic Compounds which are not benzene but show some
characters of benzene like aromaticity etc, are called semi-
benzene.
e.g. Methylenehexadienes

Is This Answer Correct ?    9 Yes 0 No

Question { 18267 }

Is water a element or a compound?


Answer

compound;
In elements, same types of atoms are present.

Is This Answer Correct ?    4 Yes 2 No

Question { ChemBiotech, 10672 }

2+2 CYCLO ADDITION OPTICALLY ACTIVE OR THERMALLY ACTIVE.


Answer

2+2 cycloaddition -Photochemically allowed process

Is This Answer Correct ?    7 Yes 1 No

Question { 30527 }

What is difference between Base and Nucleophile?


Answer

*There are much more similarities between base and
nucleophile.Base attacks at more acidic protons while
nucleophile attaks at electron deficient carbon.
e.g. LDA--- Base
OH- Nucleophile as well as a base.

Nucleophile may also act as a base.

Is This Answer Correct ?    76 Yes 16 No

Question { 30527 }

What is difference between Base and Nucleophile?


Answer

Bases attack at more acidic protons while Nucleophiles
attack at electron deficient atoms.

Generally, stronger base acts as weaker nucleophile and
weaker base acts as strong nucleophile.
e.g.
LDA is strong base as well as weak nucleophile.

Is This Answer Correct ?    45 Yes 9 No