Class 12th

Get insights from 12k questions on Class 12th, answered by students, alumni, and experts. You may also ask and answer any question you like about Class 12th

Follow Ask Question
12k

Questions

0

Discussions

59

Active Users

0

Followers

New question posted

7 months ago

0 Follower 4 Views

New answer posted

7 months ago

0 Follower 3 Views

S
Sanjana Dixit

Contributor-Level 10

Yes, PW Institute of Innovation, Lucknow accepts Class 12 marks for admission. The college offers BTech, BBA, and BVoc programmes at the UG levels. Candidates looking for course admission must complete the basic educational qualification, i.e., Class 12. The application process at the PW Institute of Innovation, Lucknow, is conducted online. 

New answer posted

7 months ago

0 Follower 14 Views

A
alok kumar singh

Contributor-Level 10

Resonating structures of phenoxide are-

In structure I and V negative charge is on E.N. Oxygen, in other cases, it is on Less E.N Carbon hence they contribute less towards stability. And the negative charge is localized.

Resonating structures of carboxylic acid-

Both the structures have –ve charge on oxygen and electron are delocalised too hence, the carboxylic acid is more stable and acidic than phenol.

 

 

New answer posted

7 months ago

0 Follower 16 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution:

 

 

New answer posted

7 months ago

0 Follower 58 Views

A
alok kumar singh

Contributor-Level 10

1. Cyclohexanone forms cyanohydrin in good yield because the ketonic group has very less steric hindrance at both the ortho position but 2,2,6 tri methyl cyclohexanone have high steric hindrance which reduces the attack from CN nucleophile.

2. Only one Amino group is involved in the resonance structure of semicarbazide hence e- density on NH2 group decreases & it can't act as a nucleophile. But another NH2 group can attack as a nucleophile to form semicarbazones.
3. It is the reversible reaction hence if we don't remove the water or ester the reaction may proceed in backward direction, for that It is essential the water or

...more

New answer posted

7 months ago

0 Follower 52 Views

A
alok kumar singh

Contributor-Level 10

1. When 1- phenyl ethane is oxidized with a strong oxidizing agent like KMnO4, it forms a benzoic acid ion.

2. When phthalic acid is treated with SoCl2 it chlorinates both carboxyl group to form ptthaloyl chloride.
3. When benzaldehyde is treated with semicarbazide to form benzaldehyde semicarbazone.

4. When benzene is mixed with benzoyl chloride in presence of Anhyd.AlCl3 to give benzophenone.

5. When 4-oxocyclohexanecarbeldehyde is treated with tollens reagent it gets oxidized to carboxylate anion  as it is aldehyde it reduces tollens reagent.

6. When 2-formyl benzoic acid is treated with NaCN it produces 2-[1-hydroxycyanom

...more

New question posted

7 months ago

0 Follower 37 Views

New question posted

7 months ago

0 Follower 3 Views

New answer posted

7 months ago

0 Follower 104 Views

A
alok kumar singh

Contributor-Level 10

1. Acetylation refers to the process of introducing an acetyl group (resulting in an acetoxy group) into a compound, namely the substitution of an acetyl group for an active hydrogen atom. A reaction involving the replacement of the hydrogen atom of a hydroxyl group with an acetyl group (CH3CO) yields a specific ester, the acetate. Acetic anhydride is commonly used as an acetylating agent reacting with free hydroxyl groups., this reaction is usually carried out in the presence of base like pyridine.

2. Aldeydes having no α-H undergo the disproportion reaction in the presence of Strong alkali, it is a chemical reacti

...more

New answer posted

7 months ago

0 Follower 178 Views

A
alok kumar singh

Contributor-Level 10

1. When propanone reacts with NaBH4 it will form propan-2-ol.This alcohol is dehydrated to form propene.

2. When benzoic acid is treated with SOCl2 it chlorinates the acid. After controlled hydrogenation it forms benzaldehyde

3. When ethanol is treated with Cu at 573 k, it will oxidize to ethanal. When ethanal is treated with Dil.NaOH it will form 3-Hydroxy butanal

4. After frieadal craft acylation of benzene it will convert into acyl benzene. And further treating with nitrating mixture it forms m-nitroaceto phenone .

5. When benzaldehyde is oxidized with dichromate and treated with calcium carbonate it forms calcium salt. And after dry di

...more

Get authentic answers from experts, students and alumni that you won't find anywhere else

Sign Up on Shiksha

On Shiksha, get access to

  • 66k Colleges
  • 1.2k Exams
  • 684k Reviews
  • 1800k Answers

Share Your College Life Experience

×
×

This website uses Cookies and related technologies for the site to function correctly and securely, improve & personalise your browsing experience, analyse traffic, and support our marketing efforts and serve the Core Purpose. By continuing to browse the site, you agree to Privacy Policy and Cookie Policy.