Chemical & Petrochemical Sector

61. Which chemical is commonly used as a food coloring agent?
a) Titanium dioxide
b) Carmine
c) Indigo carmine
d) Curcumin

62. Which petrochemical is used in the production of ethylene glycol?
a) Ethylene
b) Propylene
c) Butadiene
d) Benzene

63. Which chemical is commonly used as a rust remover?
a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
d) Acetic acid

64. Which Indian company is the largest producer of sulfuric acid?
a) Tata Chemicals
b) Gujarat State Fertilizers & Chemicals Ltd.
c) Rashtriya Chemicals and Fertilizers Limited (RCF)
d) Hindustan Zinc Limited

65. Which chemical is commonly used as a pH regulator in swimming pools?
a) Sodium carbonate
b) Sodium bicarbonate
c) Sodium hydroxide
d) Hydrochloric acid