What is the correct answer?


Annealing of cast iron

A. Softens it to facilitate machining

B. Decreases the free carbon

C. Increases the strength

D. None of these

Correct Answer :

A. Softens it to facilitate machining

Related Questions

The difference between gross & net calorific values of fuel is due to… Flue gases pass through the following boiler accessories in a high pressure… In Imperial Smelting Process for extraction of zinc, zinc vapour thus… Which of the following is an unconventional source of energy? Methyl orange indicator turns For a first order chemical reaction, the concentration of the reactant… The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by Boiler draught of 10 mm water column is equivalent to Mho's scale of hardness, which consists of 10 standard minerals is used… __________ has the highest melting point out of the following. Minimum thermal efficiency of a steam boiler may be around __________… Which of the following is not an ore of copper? Alcohols are not suitable as diesel engine fuel because the cetane number… Brittleness induced due to the presence of sulphur in steel can be reduced… Ferromagnetic materials owe their properties to __________ inner sub-shells. In inventory control theory, the economic order quantity (EOQ) is the Steel produced from phosphatic iron is __________ in nature. In the Bayer's process, bauxite is digested under pressure using A fluid is termed as the Newtonian fluid, when the shear stress is __________… The difference in one unit of Rockwell hardness number corresponds to… A dummy activity is used in PERT network to describe the Brass parts with high residual tensile stress at the surface are susceptible… Which one is neutral in character? Pick out the wrong statement. Pick out the wrong statement. Addition of __________ to steel does not impart hardness. Though tin occurs lower than iron in the electrochemical series, yet it… Hydrogen in liquid steels is dissolved The cathode in an electrochemical cell always carries In a drilling process, the metal is removed by both shearing & extrusion.…