Permanent hardness of water can be removed by
Addition of soda ash to it
Treating it with zeolites
Passing it through sodium hexametaphosphate
All (A), (B), and (C)
- Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium…
- Cation exchanger is regenerated usually with
- Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled…
- Neoprene is a
- Phenolic antiseptics are added in the __________ soap.
- Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent.
- __________ acid is an unsaturated fatty acid.
- Which of the following is not an insecticide?
- Coagulant is used __________ filtration.
- Which of the following is not a food additive?
- Which of the following contains least amount of N2?
- Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
- Pick out the wrong statement. Iodine value of an oil or fat is
- Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
- Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen…
- Raw materials for 'Solvay Process' for manufacture of the soda ash are
- Which one of the following is not an elastomer?
- Which of the following is used as a coagulant in treating turbid water?
- Which of the following is a constituent of vinegar?
- Starting material for the production of butadiene in India is
- Process conditions in fermentator used for production of penicillin is
- Polyvinyl chloride (PVC) is
- Phthalic anhydride is made by the
- Fumigant insecticides
- Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving)…
- Bakelite is chemically known as
- Use of chlorine in the treatment of sewage
- Main constituents of natural rubber is
- Roasting of metallurgical ores is done mainly to
- Dacron is a/an