Q. Which of the following exercises most powerful influence on the mechanical properties of steel ?

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Q. Percentage of silver in German silver is

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Q. Balls in a ball mill are usually made of

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Q. Water gas generator is made of

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Q. The digester of a Gobar gas plant is a

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Q. The ability of a material to offer resistance to scratching or indentation is a measure of its

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Q. Brine (15% concentration) can be stored in a vessel made of

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Q. Acid proof stoneware

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Q. Diamagnetic materials are magnetised

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Q. High degree of toughness is a must for

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Q. 'Hypersil' is a __________ steel.

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Q. Generally __________ are subjected to galvanising (i.e., zinc coating).

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Q. A material no longer behaves elastically beyond

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Q. When the steel is subjected to normalising, its __________ decreases.

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Q. The most commonly used resin for making reinforced plastic is

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Q. Most suitable material for high pressure vessel operating at 500 atm. and 500° C is

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Q. Concentrated HCl at 30°C can be stored in a vessel made of

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Q. A magnetic material becomes __________ above the Curie temperature.

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Q. Which of the following is not a non-ferrous alloy ?

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Q. Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of

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