Which of the following impurities in feed water for high pressure boiler is the most detrimental?
Silica
Dissolved oxygen
Suspended salt
Dissolved salt
- Presence of H2S in raw water (to be chlorinated) results in the
- Kaolin is a/an
- Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
- Na2CO3.10H2O is called
- Gypsum is chemically
- Sudden temperature fluctuation does not affect pyrex glass, because of its
- Pick out the wrong statement.
- Epoxy resin
- Permanent hardness of water is due to the presence of calcium & magnesium
- Paper grade bamboo contains about __________ percent cellulose.
- Carbon disulphide is mainly used in the production of
- Fusion of bauxite and __________ produces high alumina cement.
- Thermosetting plastic materials
- Bromine content in sea water may be around __________ ppm.
- How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical…
- Hydrazine is largely used
- With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur…
- Penicillin is made employing __________ fermentation process.
- Titanium dioxide is a/an __________ colour pigment.
- Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of
- Which of the following is a constituent of coffee?
- Hydrocyanic acid (HCN) is used as an insecticide for
- Enamels
- __________ is the major constituent of the Portland cement.
- Which of the following is used as a coagulant in treating turbid water?
- Trinitro-toluene (TNT) is
- Oxygen is produced by fractionation of air using __________ process.
- The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
- Which glass is usually used in optical work?
- Bromine is used in the preparation of