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Bakelite:
It is thermosetting plastics which are most widely used and the most important plastics.
Preparation:
It is formed by condensation reaction of phenol and formaldehyde.
Properties:
1. It possesses outstanding electrical and mechanical properties.
2. It is resistant to heat, water and many chemicals.
3. It decomposes by concentrated caustic alkalis, sulphuric acid and nitric acid.
Uses:
1. Uses for making switch boards, aircraft accessories, automobile and telephone.
2. Asbestos is added to increase resistance to heat and chemicals. Moulded sheets having many uses are made by impregnating paper sheets in resins.
Neoprene (GR: or Polychloroprene or Dupe) Preparation: Neoprene is prepared by the free radical polymerisation of chloroprene in an emulsion system. Starting materials are ac
COMPOUNDS A AND B CONTAIN COPPER AND SULPHUR.EACH CONTAINS 20% AND 33.33% EACH BY MASS OF SULPHUR RESPECTIVELY.FIND THE RATIO OF THE ELEMENTS USING THE THIRD LAW OF CHEMICAL COMBIN
LIGAND FIELD THEORY The five d orbitals with distinct values of the magnetic quantum number (m) have the similar energy in a free atom or ion. In any compound they interact
conductometric determination of hydrolysis constant of conjugate base of weak acid experiment?
. Types of salt and what happens when expose to the atmosphere
Why is ATP considered an endothermic reaction ?
Problem 1: What do you meant by Gas Chromatography? Show the quantitative applications of gas chromatography. Definition of Gas Chromatography Briefly explain about Q
Be 2+ is isoelectronic with: (1) Mg 2+ (2) Na + (3) Li + (4) H + Ans: Li +
what is chemistry
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