Phosphoric acid is prepared from
Cryolite
Chalcopyrite
Rock phosphate
None of these
- Pick out the wrong statement.
- Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
- In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations…
- Which of the following is a bleaching agent added in the detergents to facilitate removal of stains…
- Fusel oil is a/an
- Which of the following is the second major component of cement?
- Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
- Presence of H2S in raw water (to be chlorinated) results in the
- Vanillin is a type of
- Fourdrinier machine is used in the manufacture of
- The main use of HCl is in the
- High acid value of an oil or fat is an indication of
- Phenol formaldehyde resin is used as an adhesive in making
- Hydrogenation of oil does not
- Solvent used for extraction of oil is
- Cation exchanger is regenerated usually with
- Concentration of hydrogen peroxide is done by
- Percentage of glycerine present in the spent lye obtained during soap manufacture is about
- Alcohol content in freshly prepared natural and fortified wine may be respectively around __________…
- Which of the following is not produced commercially from sea water?
- Major component of flint glass is
- Production of one ton of cement requires about __________ tons of limestone.
- Isopropyl benzene produced by alkylation of benzene with propylene is known as
- Which form of sulphur is the most stable at room temperature?
- A unit operation is exemplified by the process of
- Which is the most suitable dye for synthetic fibres?
- Main constituents of Portland cement are calcium aluminate and
- The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold…
- Caprolactam (a raw material for nylon-6 manufacture) is produced from
- Which of the following is not present in bagasse fibre?