Q. On an average __________ fast neutrons are produced by nuclear fission of each atom of uranium-235.

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Q. In a titration involving weak acid and strong base, the preferred indicator is

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Q. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area ; in the casting)

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Q. Pick out the wrong statement.

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Q. Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.

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Q. Which of the following heat treatment processes is used for softening the hardened material ?

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Q. The type of water filter normally employed/ preferred for treating small quantities of water in railway stations and individual industries is the __________ filter.

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Q. The radioactive isotope of hydrogen is

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Q. Refrigerative cooling employed during long distance transportation of food stuffs is normally done by

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Q. Internal cracks in drawn bars are due to

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Q. Yield strength of a polycrystalline metal with an average grain size, d, is proportional to

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Q. Pick out the wrong statement:

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Q. The tensile strength of plastics ranges from __________ kg/mm².

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Q. Grain hardness is measured by the __________ hardness testing method.

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Q. The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.

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Q. During brazing, if the fluxes are entrapped, it results in the

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Q. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

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Q. All modes of heat transfer i.e., conduction, convection & radiation occur in case of the

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Q. The standard instrument used for calibrating the load applied by universal testing machine is called

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Q. The reductant used in the extraction of magnesium from calcined dolomite via Pidgeon's process is

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