Permanent hardness of water can be removed by
Simply boiling
Adding alum
Passing it through cation & anion exchangers
All (A), (B) and (C)
- Which of the following is used as a binding material in soap to improve soap texture?
- Vanillin is a type of
- Low purity oxygen is used for
- Neon gas is
- Fusion of limestone and __________ produces high alumina cement.
- Coke oven gas consists mainly of
- Pick out the wrong statement.
- Esterification reaction
- Gun powder uses
- Fusel oil is a/an
- Salt cake is chemically represented by
- Ca(OH)2 is called
- BHC (Benzene hexachloride) is made by the chlorination of benzene
- Graphite is a/an
- Which of the following is not responsible for causing permanent hardness of water?
- __________ acid is an unsaturated fatty acid.
- What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in…
- In primitive days, __________ was being manufactured by Leblanc Process.
- Pick out the false statement pertaining to water treatment.
- Viscose rayon is chemically
- Hydrolysis of sugar is called
- Vegetable oils and fats basically differ in their
- Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving)…
- The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
- Chemical name of 'alum' is
- CO & H2 are the constituents of
- Phthalic anhydride is produced by the oxidation of
- Calcareous & argillaceous materials are used in the manufacture of
- Solvent extracted oil
- Fats as compared to oils have