Advertisements
Advertisements
प्रश्न
Write a note on aldol condensation.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
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 can you differentiate between addition and condensation polymerisation?
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?
Match the polymers given in Column I with their main applications given in Column II.
| Column I | Column II |
| (i) Bakelite | (a) Unbreakable crockery |
| (ii) Low-density polythene | (b) Non-stick cookwares |
| (iii) Melamine-formaldehyderesin | (c) Packaging material for shock absorbance |
| (iv) Nylon 6 | (d) Electrical switches |
| (v) Polytetrafluoroethane | (e) Squeeze bottles |
| (vi) Polystyrene | (f) Tyre, cords |
Acetic acid is added in the preparation of nylon-6 to
A raw material used in making nylon is
Nylon is a
Wash and wear clothes are manufactured using
Melamine is
Celanese silk is:-
Nylon – 6 is made from
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:
