Answer / nihar ranjan

Dross is a mass of solid impurities, which forms during smelting of low-melting point metals viz, Aluminium, Tin, Lead . As metal is melted, it oxidizes, forming a layer of scum and impurities which float to the surface as the metal heats up.

Scaling is mainly due to the presence of calcium and magnesium salts (carbonates or sulphates), which are less soluble hot than cold, or to the presence of too high concentration of silica.

Causes of F.O. Purifier abnormal flow?

0 Answers   RRB,

---

Enumerate the parts of Main Switchboard

0 Answers   RRB,

---

whats the coloring code of a air to open or a air to close valve?

0 Answers  

---

what are the evidence required for checking when pay money in backdoor job process

0 Answers  

---

function of clutch?

3 Answers  

---

can i get interview pattern of bharath electronics limited ,

1 Answers   BEL, BHL,

---

can someone explain tolerances on bolts what the symbols mean

0 Answers  

---

Types & function of Boiler ?

3 Answers   Bhel,

---

Pls tell me the diff bw impulse turbine and reaction turbine

0 Answers   Essar,

---

what is the difrrence between qa & qc

4 Answers  

---

Define weber number and its significance?

0 Answers   John Deere,

---

Metals, in general are of low strength and do not possess required physio-chemical and technological properties for a definite purpose. Alloys are therefore more than metals alone. Discuss the arrangement of atoms and structures of alloys.

0 Answers  

---