Which of the following is used in vulcanization rubber?
SF6
CF4
CI2F2
C2F2
Which of the following is not a polymer?
RNA
Oxytocin
Cholesterol
Amylose
2- methyl propene
styrene
propylene
ethene
In elastomers, intermolecular forces are
nil
weaker
strong
very strong
Teflon is a polymer of
Vinyl chloride
tetrachloro ethylene
tetrafluro ethylene
buta - 1,3- diene
Which of the following does not reduce Fehling's solution?
Benzaldehyde
Formic acid
Glucose
Fructose
Which of the following is a biodegradable polymer?
Cellulose
Polythene
Polyvinyl chloride
Nylon - 6
Which of the following is not a synthetic rubber?
Neoprene
SBR
Thiokol
Orlon
Which of the following is not a thermoplastic?
Polystyrene
Teflon
Nylon- 66
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.