Suppose copper was high up in the reactivity series. Would it still have been such a useful metal? Give reasons.

Which substance is used for making pencil lead? (a) Sulphur (b) Silicon (c) Graphite (d) Aluminium

Gold normally occurs in nature (a) in a free state. (b) as carbonate ore. (c) as sulphate ore. (d) as sulphide ore.

Metal oxides are (a) neutral (b) basic (c) acidic (d) all of these

Metal A dipped in a salt of metal B displaces B from the solution. This shows that (a) A is more reactive than B. (b) B is more reactive than A. (c) both A and B are equally reactive. (d) no such conclusion can be drawn

In displacement reactions (a) a more reactive metal displaces a less reactive metal. (b) a less reactive metal displaces a more reactive metal. (c) both (a) and (b) (d) none of these

The metal which is liquid at room temperature is (a) sodium (b) bromine (c) calcium (d) mercury

Which one of the following alloys is light and strong? (a) brass (b) stainless steel (c) duralium (d) bronze

Arrange the following metals in the sequence of more reactive to less reactive.Iron, Zinc, Magnesium, Copper

Non-metals are: (a) generally liquids(b) generally gases (c) generally solids and gases(d) generally gases and liquids.

Which Of The Following Non-Metals Reacts And Catches Fire On Exposure To Air? [A]. Phosphorus [B]. Nitrogen [C]. Sulphur [D]. Hydrogen

Which non-metal is used in making glass? (a) Graphite (b) Sulphur (c) Silica (d) None of these