Q. Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as

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Q. Which of the following commercial metals is most abundantly found in India ?

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Q. Tin vessels are corroded by

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Q. Out of the following, copper vessels are the most suitable for the storage of

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Q. Rotary driers are generally made of

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Q. Presence of high phosphorous in cast iron increases its

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Q. The phenomenon in which slow extension of material takes place with the time at constant load is called

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Q. A material capable of undergoing large permanent deformation, when subjected to compression is termed as

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Q. __________ is used for examining the macro-structure of a material.

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Q. Hydrochloric acid is __________ corrosive to common metals.

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Q. Tank furnace used for melting of glass is made of

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Q. Spray dryer for evaporating milk to produce milk powder is made of

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Q. Chromel (Nichrome) is an alloy of

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Q. Which of the following is not an alloy of nickel and chromium ?

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Q. Presence of high amount of silicon in cast iron

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Q. Rubber lined pumps can be used to pump

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Q. Titanium metal

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Q. Purity of electrical grade aluminium should be ≥ __________ percent.

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Q. Maximum consumption of zinc is in

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Q. Wrought iron is

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