41. Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?
42. Dephosphorisation of molten pig iron is favoured by
43. Commonly used flux for brazing is
44. For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.
45. Air-petrol ratio in an automotive petrol engine is around
46. A balanced draught boiler furnace employs __________ draught fan.
47. The normal stress is the same in all directions at a point in a fluid, only when the fluid
48. Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50 wt% B is
49. __________ of test specimens is not involved in any hardness testing method.
50. The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
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- Chemical Engineering Basics - Section 13