Q. Presence of manganese in alloy steel improves its

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Q. Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with

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Q. A material is called 'ductile', if it can be

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Q. A chemical change takes place when iron

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Q. Evaporator used for concentrating tomato juice is made of

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Q. High carbon steel contains more than __________ percent carbon.

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Q. The main constituent of carborundum is __________ carbide.

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Q. Ammonium chloride solution is stored/ treated in __________ vessels/pipes.

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Q. Nickel and copper are the basic constituents of

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Q. Copper has very low

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Q. Hardest material so far found is

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Q. Most suitable material of construction for the storage of concentrated nitric acid is

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Q. Soap kettle used in the production of laundry soap is made of

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Q. Nickel made/clad equipments are suitable for handling

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Q. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of

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Q. In hot wire aneomometer used for gas flow measurement, the wire is normally made of

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Q. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is

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Q. Carbon percentage is the same in cast iron and

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Q. Pick out the wrong statement.

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Q. In order to be called steel, an alloy should have iron percentage greater than

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