86. Which petrochemical is used in the production of acrylic fibers?
a) Ethylene
b) Propylene
c) Acrylonitrile
d) Benzene
87. Which chemical is commonly used as a foaming agent in fire extinguishers?
a) Carbon dioxide
b) Water
c) AFFF (Aqueous Film-Forming Foam)
d) Dry chemical powder
88. Which Indian company is the largest producer of ammonia and urea?
a) National Fertilizers Limited (NFL)
b) Rashtriya Chemicals and Fertilizers Limited (RCF)
c) Gujarat State Fertilizers & Chemicals Ltd.
d) Krishak Bharati Cooperative Limited (KRIBHCO)
89. Which chemical is commonly used as an adhesive in woodworking?
a) Polyvinyl acetate (PVA)
b) Epoxy
c) Cyanoacrylate
d) Phenol formaldehyde
90. Which petrochemical is used in the production of synthetic fibers like polyester?
a) Ethylene
b) Propylene
c) Terephthalic acid (TPA)
d) Benzene
