Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex ?
A. Ammonium alum
B. Potassium alum
C. Both A. & B.
D. Neither A. nor B.
A. Ammonium alum
B. Potassium alum
C. Both A. & B.
D. Neither A. nor B.
A. Harder
B. More abrasion resistant
C. Having higher melting point
D. None of these
Nylon-6 as compared to nylon-66 is_________________? Read More »
Polymer Technology A. Harder
B. Stronger
C. Lighter
D. All A., B. and C.
Polypropylene compared to polythene is___________________? Read More »
Polymer Technology A. Produces high density polythene
B. Uses no catalyst
C. Produces low density polythene
D. Employs very high pressure
Zeigler process________________? Read More »
Polymer Technology A. Chloroethane
B. Chloroprene
C. Isoprene
D. None of these
A. An amorphous polymer
B. A natural polymeric fibre
C. Polyacrylonitrile
D. Poly-methyl-methacrylate (PMMA)
Orlan fibre which is used as a wool substitute is __________________? Read More »
Polymer Technology A. Phenol formaldehyde
B. An inorganic polymer
C. Polytetrafluroethylene (PTFE)
D. A monomer
Teflon is__________________? Read More »
Polymer Technology A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skimming agent in paint
D. None of these
The main use of butadiene is____________________? Read More »
Polymer Technology A. Polythene
B. PVC
C. Rayon
D. Polyvinyl acetate
A. Cellulose acetate
B. Cellulose nitrate
C. PVC
D. High density polythene
Automobile steering wheels are normally made of__________________? Read More »
Polymer Technology