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Question
The processes which do use catalysts are:
The processes which do use catalysts are:
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Solution
The correct options are
B contact process
C ostwald's process
D haber's process
A)contact process, modern industrial method of producing sulfuric acid; it has largely replaced the chamber, or lead-chamber, process. sulfur dioxide and oxygen, passed over a hot catalyst, unite to form sulfur trioxide, which in turn combines with water to make sulfuric acid. catalyst is used.
B) Thermite process is very useful for the welding of broken metal parts. When Aluminum powder reacts with iron oxide or chromium oxide, a large amount of heat is released and about a temperature of 3500oC is obtained which is enough to weld broken metallic parts. No catalyst is used.
C) he Ostwald process is a chemical process for making nitric acid (HNO3). Wilhelm Ostwald developed the process, and he patented it in 1902. The Ostwald process is a mainstay of the modern chemical industry, and it provides the main raw material for the most common type of fertilizer production in the presence of a catalyst such as platinum with 10% rhodium.catalyst is used.
D) The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron. Catalyst is used.
Hence options A,C & D are correct.
B contact process
C ostwald's process
D haber's process
A)contact process, modern industrial method of producing sulfuric acid; it has largely replaced the chamber, or lead-chamber, process. sulfur dioxide and oxygen, passed over a hot catalyst, unite to form sulfur trioxide, which in turn combines with water to make sulfuric acid. catalyst is used.
B) Thermite process is very useful for the welding of broken metal parts. When Aluminum powder reacts with iron oxide or chromium oxide, a large amount of heat is released and about a temperature of 3500oC is obtained which is enough to weld broken metallic parts. No catalyst is used.
C) he Ostwald process is a chemical process for making nitric acid (HNO3). Wilhelm Ostwald developed the process, and he patented it in 1902. The Ostwald process is a mainstay of the modern chemical industry, and it provides the main raw material for the most common type of fertilizer production in the presence of a catalyst such as platinum with 10% rhodium.catalyst is used.
D) The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron. Catalyst is used.
Hence options A,C & D are correct.
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