Materials and Construction As the impurities are oxidised, the melting point of iron May increase or decrease ; unpredictable Remains unchanged Decreases Increases May increase or decrease ; unpredictable Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Lead lined equipments & vessels are suitable for handling Hydrochloric acid (10%) Sulphuric acid upto 60°C Nitric acid All of these Hydrochloric acid (10%) Sulphuric acid upto 60°C Nitric acid All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Coke oven regenerators are made of __________ bricks. Low thermal conductivity High electrical conductivity Fire clay Silica Low thermal conductivity High electrical conductivity Fire clay Silica ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The increase in hardness of metal due to its cold working is termed as the __________ hardening. Age Flame Work Induction Age Flame Work Induction ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Softening of hardned steel is done by its Tempering Normalising Annealing Carburising Tempering Normalising Annealing Carburising ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction High resistance electrical heating elements/wire are not made of Nimonic alloys Nichrome Marageing steel Kanthal wire Nimonic alloys Nichrome Marageing steel Kanthal wire ANSWER DOWNLOAD EXAMIANS APP
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