Question

1).give name for a molten metal that catches fire in chlorine gas and gives off white fumes?<br />2).give name for a metal that forms two types of oxides and rusts in moisture; write their formulae also. <br />3).name two metal which can displace hydrogen from dilute HCI.<br />4).Which metals do not corrode easily?<br />5).What are alloys?<br />6).Give name for a metal used in hot water systems? <br />7).Metals replace hydrogen from acid, whereas non-metals do not. why? <br />8).Are metals electronegative or electropositive?<br />9).Give name for a metal used in long distance cables wires. <br />10).Give name for a metal added to gold to harden it? <br />11).Name the metal which occurs below copper in the reactivity series.also name the metal that lies just above hydrogen in the reactivity series. <br />12).Name a metal used in structural engineering. <br />13).Name a metal used as fuse wire<br />14).Name a brittle metal, which is used to galvanize iron. <br />15).Name a non-metal which is hard and has high melting point.<br />16).name a metal whose chloride and sulphate salts are both insoluble. ​

Answer 1

Explanation:

2. The molten metal that catches fire in chlorine gas and gives off white fumes is sodium. The metal that forms two types of oxides and rusts in moisture is iron. The formulas of its oxides are: FeO; FeO3