हिंदी

Write a Note on Aldol Condensation. - Chemistry

Advertisements
Advertisements

प्रश्न

Write a note on aldol condensation.

उत्तर

Aldol Condensation : -

When aldehyde or ketone containing α -hydrogen atom is warmed with dilute alkali like dil. NaOH then condensation reaction takes place, a β -hydroxy aldehyde or β -hydroxyl ketones is obtained and the reaction is called as Aldol condensation.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2013-2014 (March)

APPEARS IN

संबंधित प्रश्न

Write the names and structure of the monomers of the following polymers: Nylon-6, 6


Which of the following is a fibre? Nylon, neoprene, PVC


Write the names of monomers of the following polymers.


Write the names of monomers of the following polymers:


Write the names of monomer of the following polymer:


How is dacron obtained from ethylene glycol and terephthalic acid?


How are the following polymers prepared?

Orlon


What are thermoplastic polymers?

 


Name the monomers and the type of polymerization in each of the following polymers:

Bakelite


What is the significance of number of 6,6 in the polymer nylon-6,6?


Write the name of the monomer of the following polymer:

Bakelite


Write the structures of monomers used the following polymers: 
Nylon - 6, 6


Which of the following polymers can have strong intermolecular forces?

(i) Nylon

(ii) Polystyrene

(iii) Rubber

(iv) Polyesters


Which factor imparts crystalline nature to a polymer like nylon?


Assertion: Polyamides are best used as fibres because of high tensile strength.

Reason: Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character, hence, provide high tensile strength to polymers


Acetic acid is added in the preparation of nylon-6 to


A raw material used in making nylon is


Perion is 


Nylon is a


Wash and wear clothes are manufactured using


Melamine is


Celanese silk is:-


Nylon – 6 is made from


The polymer formed on heating Novolac with formaldehyde is ______.


The polymer containing strong intermolecular forces, e.g., hydrogen bonding, is ______.


Match List - I with List - II:

  List - I
(Polymer)
  List - II
(used for items)
(A) Nylon 6, 6 (I) Buckets
(B) Low density polythene (II) Non-stick utensils
(C) High density polythene (III) Bristles of brushes
(D) Teflon (IV) Toys

Choose the correct answer from the options given below:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×