Organic Chemical Technology

prevent redeposition of soil on cleaned surface. ✘ act as optical brightening agent. ✘ inhibit corrosion in washing machines made of aluminium, ✘ none of these. ✔

do not soften on application of heat. ✘ are heavily branched molecules. ✘ are solvent insoluble. ✘ none of these. ✔

explosive ✘ rocket fuel ✘ detergents additive ✘ none of these ✔

greater resistance to corrosion by slags. ✘ less resistance to corrosion by slags. ✘ high spalling tendency. ✘ none of these. ✔

toluene ✘ ethyl alcohol ✘ naphthalene ✘ benzene ✔

acetylsalicylic acid ✘ nictonic acid ✘ calcium acetate ✘ methyl salicylate ✔

alcohol ✘ essential oil ✘ fatty acids ✘ massecuite ✔

polyvinyl chloride (PVC) ✘ polybutadiene ✘ phenol formaldehyde ✘ polyurathane ✔

endothermic ✘ exothermic ✘ irreversible ✘ both (b) and ✔

NaOH ✘ H2SO4 ✘ hydrazine ✘ alum solution ✔