56. Which Indian company is the largest producer of titanium dioxide?
a) National Aluminium Company Limited (NALCO)
b) Indian Rare Earths Limited (IREL)
c) Gujarat Mineral Development Corporation (GMDC)
d) Kerala Minerals and Metals Limited (KMML)
57. Which chemical is commonly used as a plasticizer in the production of flexible PVC?
a) Phthalates
b) Phosphates
c) Glycols
d) Amines
58. Which petrochemical is used in the production of polypropylene?
a) Ethylene
b) Propylene
c) Butadiene
d) Benzene
59. Which chemical is commonly used as a bleaching agent in the pulp and paper industry?
a) Hydrogen peroxide
b) Sodium hypochlorite
c) Chlorine dioxide
d) Potassium permanganate
60. Which Indian state is known for its production of pharmaceutical chemicals?
a) Gujarat
b) Karnataka
c) Maharashtra
d) Telangana
