Arrange the following as per the instruction given in the brackets: [3](a) Al, K, Mg, Ca (decreasing order of its reactivity)(b) N, Be, O, C (increasing order of non-metallic character)(c) P, Si, F, Be (decreasing order of valence electrons)

Identify the alloy in each case from the given composition: [2](a) Aluminium, magnesium, manganese, copper(b) Iron, nickel, chromium, carbon

The following sketch illustrates the process of conversion of Alumina to Aluminium: [5]Study the diagram and answer the following:Name the constituent of the electrolyte mixture which has a divalent metal in it.Name the powdered substance ‘X’ sprinkled on the surface of the electrolyte mixture.What is the name of the process?Write the reactions taking place at the electrodes ‘Y’ (anode) and ‘Z’ (cathode) respectively.

Write one use of the following alloys: [2](a) Bronze(b) Fuse metal

The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is: [1]Fe(OH)2Cu(OH)2Ca(OH)2Fe(OH)3

In the laboratory preparation, HCl gas is dried by passing through: [1]Dilute nitric acidConcentrated sulphuric acidDilute sulphuric acidAcidified water

The nitrate which on thermal decomposition leaves behind a residue which is yellow when hot and white when cold: [1]Lead nitrateAmmonium nitrateCopper nitrateZinc nitrate

The acid which does not form acid salt by a basic radical: [1]H2CO3H3PO4H2SO4CH3COOH

An example of a cyclic organic compound is: [1]PropenePenteneButeneBenzene

The property exhibited by concentrated sulphuric acid when it is used to prepare hydrogen chloride gas from potassium chloride: [1]Dehydrating propertyDrying propertyOxidizing propertyNon-volatile acid property

The hydrocarbon formed when sodium propanoate and soda lime are heated together: [1]MethaneEthaneEthenePropane

The indicator which changes to pink colour in an alkaline solution is: [1]Blue LitmusMethyl OrangeRed LitmusPhenolphthalein