Materials and Construction A chemical change takes place when iron Rusts Melts Is heated None of these Rusts Melts Is heated None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The specific gravity of coal depends mainly on its __________ content. Volatile matter Moisture Ash Carbon Volatile matter Moisture Ash Carbon ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction In cold working of metal as compared to its hot working Ductility and impact strength improves Yield stress, hardness and fatigue strength is not at all affected Appreciable strain hardening is produced Cracks and blow holes are eliminated Ductility and impact strength improves Yield stress, hardness and fatigue strength is not at all affected Appreciable strain hardening is produced Cracks and blow holes are eliminated ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The temperature at which new grains are formed in the metal is called the __________ temperature. Recrystallisation Upper critical Eutectic Lower critical Recrystallisation Upper critical Eutectic Lower critical ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Interchain forces are the weakest in case of Both rubber & elastomers Elastomers Plastics Fibres Both rubber & elastomers Elastomers Plastics Fibres ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction 100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with Aluminium, tin and rubber Mild steel and stainless steel Teflon, glass and porcelain Cast iron and high silicon iron Aluminium, tin and rubber Mild steel and stainless steel Teflon, glass and porcelain Cast iron and high silicon iron ANSWER DOWNLOAD EXAMIANS APP
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