D) 250°C Date04-12-201 This property of metals which permits no permanent distortion before breaking is called asa)fusibilityb) strengthd) brittlenessc) toughness2The fusibility, tin melts at what temperaturea)100°Cb) 223°Cc) 232°C3 A copper is of which colora)dark redb) light redc) distinctive red d) nick color4The following is one physical property of metalsa)conductivity b) graphitec)irond) steel5 Weight is of which quantitya) upper quantity: b) vector quantity c) scalar quantityd)none of these6 The relation of mass & volume is calleda)densityb)volumec)unitd)force7 In solid, the cast iron specific gravitya)7.82b) 0.84c) 0.75d) 7.28 It is force with which a body is attracted by the earth towards its center is calleda)electric fieldb)weightc)densityd) force9 The melting point of nickel isa)1450°Cb) 3370°Cc) 3380°Cd)457°C10 Which of following 'one' is fundamental units of basic quantitiesa) Forceb) massc) volumed) area111 metric ton =a) 0.98 tonb) 100 tonc) 1000 tond) 110 ton12 The basic unit symbol of light intensity.a) Clb)CLd)LI13The unit of power.aljouleb)wattc)newtond)cmb) CB​