Q. Which of the following is not an ore of iron ?

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Q. Which is the most lethal weapon ?

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Q. Reynolds number of a fluid flowing in a circular pipe is 10000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?

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Q. An example of unsteady non uniform flow is the flow of liquid under pressure through a

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Q. Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

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Q. Holes for rivetting purposes should be preferably made by

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Q. One of the methods of purification of leach liquor is ion exchange, which involves

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Q. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities.
For minimum heat transfer to take place

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Q. Large diameter shafts are manufactured by

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Q. Common salt is produced from sea water in India generally by the __________ method.

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Q. Killed steels

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Q. Which of the following phenomenon/ phenomena is/are diffusion controlled ?

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Q. Joule-Thomson co-efficient is the ratio of

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Q. Expansion device used in a window air-conditioner is a/an

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Q. The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.

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Q. Work study deals with the __________ study.

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Q. Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.

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Q. Knocking tendency in a petrol engine decreases with increasing

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Q. Hooke's law

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Q. A colloidal system, in which a liquid is dispersed in gas is called a/an

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