Q. The refractory lining of the bottom in a basic electric arc furnace is made of

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Q. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is

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Q. Matte smelting is used in the extraction of

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Q. Percentage of differential pressure lost in a venturimeter with a tapering of 15° may be about

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Q. Compressed dry air is used as the cutting fluid, while machining

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Q. Which of the following materials has the least scrap value ?

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Q. Force between the molecules of the same substance is called __________ force.

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Q. Stresses encountered in the metal forming processes are less than the __________ of the material.

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Q. Which of the following is not a ferromagnetic material ?

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Q. Rain drops falling through atmospheric air attain limited terminal velocity, because of

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Q. Pick out the wrong statement.

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Q. Shampoos are commercially not available in the form of

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Q. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

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Q. Carbon is present in the form of __________ in grey cast iron.

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Q. In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

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Q. __________ remains constant during the adiabatic cooling of moist air.

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Q. __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

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Q. Out of the following, the alloy which has equal percentage of constituents, is

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Q. Steel is welded using the __________ flame.

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Q. Oxide layer formed on the non-ferrous metal surface after its annealing is

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