For the formation of terylene, the number of moles of ethylene glycol required per mole of terephthalic acid is
1
3
2
4
The synthetic polymer which resembles natural rubber is
Neoprene
Chloroprene
Glyptal
Nylon
Which of the following does not reduce Fehling's solution?
Benzaldehyde
Formic acid
Glucose
Fructose
Which polymer is used for coating cookware to make them non-sticky?
PET
PAN
Teflon
Perlon
Which of the following is not a synthetic rubber?
SBR
Thiokol
Orlon
Which of the following is not a polymer?
RNA
Oxytocin
Cholesterol
Amylose
When condensation product of hexamethylenediamine and adipic acid is heated to 553 K (80o) in an atmosphere of nitrogen for about 4-5 h, the product obtained is
Solid polymer of nylon - 66
Liquid polymer of nylon- 66
Gaseous polymer of nylon-66
Liquid polymer of nylon - 6
Neoprene is
A monomer of rubber
Synthetic rubber
Natural rubber
Vulcanised rubber
Which of the following is a chain growth polymer?
Starch
Nucleic acid
Polystryene
Protein
Natural rubber is not used in making footwear for polar regions because
Natural rubber becomes soft at temperature lower than 10oC
Natural rubber becomes brittle at temperature lower than 10oC.
Natural rubber melts at temperature lower than 10oC.
Natural rubber becomes stronger at temperature lower than 10oC.
