Phthalic anhydride is made by the
Oxidation of naphthalene
Oxidation of benzene
Dehydrogenation of ethyl benzene
None of these
- Viscose rayon
- Pick out the wrong statement.
- Carborundum consists mainly of
- Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
- __________ process is used for producing soda ash.
- __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
- Which of the following is an additional step in the manufacture of paper from bagasse as compared to…
- Good quality of edible salt is obtained from brine by the process of
- Zeolite is a/an
- Gun powder uses
- H2S is scrubbed from refinery gases by absorption using
- Phthalic anhydride is used
- Salt cake is chemically represented by
- Pick out the wrong statement.
- Pick out the wrong statement.
- Calcareous & argillaceous materials are used in the manufacture of
- Fire clay is __________ refractory material.
- Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is…
- Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic…
- Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt…
- Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from…
- The amount of benzene present in pure Benzol is about __________ percent.
- Which of the following is not an antibiotic?
- Fermentator temperature during production of alcohol from molasses is around __________ °C.
- Reverse osmosis is normally used for the
- Paper pulp produced by Kraft/sulphate process is
- Extraction of __________ employs an electrolytic process.
- Which of the following is an yellow pigment?
- Poly Vinyl Chloride (P.V.C.) is a __________ material.
- Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.