Q. Wave length of X-rays is about 1 angstron, however it can not pass through a sheet of

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Q. Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are

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Q. The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

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Q. The leaching solvent used in Baeyer's process for the purification of bauxite is

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Q. Austempering process results in the formation of __________ structure.

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Q. Upto the critical radius of insulation, added insulation, will

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Q. Limestone is added in the blast furnace (during pig iron manufacture) to

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Q. Cementite is in the lamellar form in the __________ phase of steel.

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Q. To improve the machinability of steel, it is generally subjected to

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Q. Silicon in steel

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Q. The noble metals

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Q. Which of the following is an example of cathodic protection of metals against corrosion ?

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Q. Thermal efficiency of an internal combustion engine is around __________ percent.

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Q. Pick out the correct combination about the role of various additives used in polymers.

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Q. The lightest non-inflammable gas is

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Q. Electrometallurgical methods of metal extraction is normally used for those metals

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Q. Lowering of recrystallisation temperature of metals can be achieved by its

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Q. An example of a buffer solution is

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Q. A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

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Q. Name the safety device used to protect the boiler, when the water level falls below a minimum level.

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