Metals and Non - metals
Fill in the blanks: (a) Phosphorus is very _____ non-metal. (b) Metals are ____ conductors of heat and ____ . (c) Iron is ______ reactive than copper. (d) Metals react with acids to produce _____ gas.
Name the following metals: A metal which is unaffected by dilute or concentrated acids.
Metals like gold, silver and platinum are unaffected by dilute or concentrated acids but these are soluble in aqua regia. Hence they are used in making jewellery.
Fill in the blanks: (a) Phosphorus is very _____ non-metal. (b) Metals are ____ conductors of heat and ____ . (c) Iron is ______ reactive than copper. (d) Metals react with acids to produce _____ gas.
A metal M which is one of the best conductor of heat and electricity used in making electric wires is found in the nature as sulphide ore, $$M_2S$$. Name the metal M.
There are 3 unknown metals- A, B and C. C displaces B from its oxide while with oxide of A, there is no reaction. Give the reactivity order of A, B and C.
True or False. Alnico can also be called as magnetic steel.
True or False. Aeroplanes are made from alloys of Iron.
True or False. Cars are made from steel which is an alloy of carbon and aluminium.
Conceptual Questions How does a metal conduct heat?
The most durable metal plating on iron to protect against corrosion is :