Chemical Process Permanent hardness of water is due to the presence of calcium & magnesium None of these Carbonate Bi-carbonates Sulphates & chlorides None of these Carbonate Bi-carbonates Sulphates & chlorides ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Phosphate rock is a raw material for the manufacture of Phosphorous Superphosphates Phosphoric acid All of these Phosphorous Superphosphates Phosphoric acid All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Process The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is Dilute H₂SO₄ None of these Oleum Ultraviolet light Dilute H₂SO₄ None of these Oleum Ultraviolet light ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Gun powder, which is an explosive comprises of charcoal, sulphur and Glycerene Nitro glycerene Dynamite Salt petre Glycerene Nitro glycerene Dynamite Salt petre ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Pig iron is produced by blast furnaces in India using mostly the iron ore named Chalcopyrite Hematite Siderite Magnetite Chalcopyrite Hematite Siderite Magnetite ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Low purity oxygen is used for Medicinal purposes Cutting and welding of metals Chemical oxidation processes L.D. steel making Medicinal purposes Cutting and welding of metals Chemical oxidation processes L.D. steel making ANSWER DOWNLOAD EXAMIANS APP
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