Chemical & Petrochemical Sector

91. Which chemical is commonly used as a thickening agent in food products?
a) Corn starch
b) Xanthan gum
c) Carrageenan
d) Guar gum

92. Which Indian state is known for its production of fine chemicals and pharmaceutical intermediates?
a) Maharashtra
b) Gujarat
c) Telangana
d) Tamil Nadu

93. Which chemical is commonly used as a cooling agent in refrigeration systems?
a) Ammonia
b) Carbon dioxide
c) Hydrochlorofluorocarbons (HCFCs)
d) Hydrofluorocarbons (HFCs)

94. Which petrochemical is used in the production of polyurethane foam?
a) Ethylene
b) Propylene
c) Toluene diisocyanate (TDI)
d) Benzene

95. Which chemical is commonly used as a descaling agent in household appliances?
a) Citric acid
b) Vinegar
c) Sulfuric acid
d) Hydrochloric acid