Materials and Construction Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Dilute HCI None of these Concentrated H₂SO₄ Acetic acid Dilute HCI None of these Concentrated H₂SO₄ Acetic acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (l/20th of ordinary metals)? Chromel Alumel Constantan Invar Chromel Alumel Constantan Invar ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Vessels made of __________ can be used to store dry chlorine. Nickel Steel or iron None of these Thermoplastic materials Nickel Steel or iron None of these Thermoplastic materials ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The process of heating the cold pressed metallic powder is called __________ in powder metallurgy. Fusion Precipitation Agglomeration Sintering Fusion Precipitation Agglomeration Sintering ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The presence of impurities in iron Increases its melting point Decreases its melting point Does not affect its melting point Makes it malleable Increases its melting point Decreases its melting point Does not affect its melting point Makes it malleable ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A bearing metal should not have Enough plasticity High toughness Low co-efficient of friction Low thermal conductivity Enough plasticity High toughness Low co-efficient of friction Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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