Explain any two types of expansions of solids with relavant equations. Write the SI uni of Co-efficient of expansion of solid.

Define coefficient of volume expansion of solids.

Define coefficient of linear expansion of solids

Define coefficient of superficial (aerial) expansion of solids.

A brass wire 1.8 m long at 27 ^(@) C is held taut with little tension between two rigid supports. If the wire is cooled to a temperature of - 39 ^(@) C . what is the tension developed in the wire, if its diameter is 2.0 mm ? Co-efficient of tear expansion of brass = 2.0 xx 10^(-5) K^(-1) , Young's modulus of brass = 0.91 xx 10^(11) Pa.

Write any two postulates of werner theory of Co-ordination compounds.

Write any two postulates of Werner's theory of co-ordination compounds.

(a) Write any two anomalous properties of fluorine. (b) Give an equation for the reaction of chlorine with hydrogen sulphide.

(i) Mention any two reasons for the anomalous behaviour of oxygen. (ii) Write the balanced chemical equation for the action of concentrated sulphuric acid on copper metal.

Write any two uses of Na_(2) CO_(3) (sodium carbonate)