Chemical Process - Study Mode

[#136] Hydrodenation of vegetable oils is a/an __________ reaction.
Correct Answer

(C) Exothermic

[#137] Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
Correct Answer

(B) < 10

[#138] Average sulphur content in Indian pyrites is about __________ percent.
Correct Answer

(B) 35

[#139] Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.
Correct Answer

(A) 15-30

[#140] Phthalic anhydride is produced by the oxidation of
Correct Answer

(A) Naphthalene

Explanation

Solution: Phthalic anhydride is industrially produced through the oxidation of naphthalene. This process involves the catalytic oxidation of naphthalene in the presence of air, yielding phthalic anhydride as a key product. Phthalic anhydride is an important chemical used in the production of plastics, resins, and dyes.