Q. Hydrogen in liquid steels is dissolved

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Q. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

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Q. Which of the following metals can not be hot worked at room temperature ?

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Q. Primary designation of steel is based on its

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Q. Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

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Q. Superheating of steam is done at constant

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Q. Dry saturated steam can be converted into superheated steam by

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Q. Pick out the wrong statement.

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Q. Increasing sulphur content in pig iron tends to make it

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Q. Oxyacetylene reducing flame is used while carrying out welding on

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Q. M₁₀ index of coke indicates its

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Q. Baffles provided on the shell side of a shell and tube heat exchanger are meant for

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Q. When an isolated thermodynamic system executes a process,

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Q. Brittleness induced due to the presence of sulphur in steel can be reduced by adding

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Q. Atomic __________ of an element is a whole number.

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Q. The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

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Q. A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

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Q. The surface tension of a liquid, at critical temperature is

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Q. Large scale fire on fuel gas line is normally extinguished by

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Q. Brazing is the joining of metals

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