Polymer Technology

Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?

Byadmin March 7, 2019August 25, 2021

Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?

A. Epoxy resin
B. Polyamide
C. Alkyd resin
D. Phenolic resin

Polymer Technology

Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are____________________?

Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are____________________?

A. 50°C and 3 – 4 kg/cm2
B. 50°C and 1 kgf/cm2
C. 250°C and 10 kgf/cm2
D. 250°C and 1 kgf/cm2

Read More Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are____________________?
Polymer Technology

Polystyrene is a ____________ plastic at room temperature?

Polystyrene is a ____________ plastic at room temperature?

A. Ductile
B. Brittle
C. Malleable
D. None of these

Read More Polystyrene is a ____________ plastic at room temperature?
Polymer Technology

Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?

Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?

A. Ni
B. V2O5
C. Fe
D. Aluminium triethyl combined with titanium tetrachloride

Read More Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?
Polymer Technology

Phthalic anhydride is used___________________?

Phthalic anhydride is used___________________?

A. In making PVC
B. As plasticisers
C. In insecticides manufacture
D. For making nylon-6

Read More Phthalic anhydride is used___________________?
Polymer Technology

Which of the following is an elastomer ?

Which of the following is an elastomer ?

A. Thiokol
B. Phenol formaldehyde
C. Urea formaldehyde
D. Polystyrene

Read More Which of the following is an elastomer ?
Polymer Technology

Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?

Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?

A. Carbon
B. Alkylated diphenyl amine
C. Thiokol
D. Magnesium

Read More Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?

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