Can you say that salt is a liquid on the basis of change in its shape? Justify your answer. Take a sponge. Observe its shape.

When acidulated water (dil. H_(2)SO_(4) solution) is electrolysed,w ill the pH of the solution be affected ? Justify your answer.

What can you say about the position of the points (5,4) (8,4) (3,4), (0,4), (-4,4), (-2,4)? Locate the points on a graph sheet. Justify your answer.

Let ** be the binary operation on the set {1,2,3,4,5} defined a"*" b = H.C.F of a and b Is the operation ** same as the operation ** defined in Exercise 4 above ? Justify your answer .

Every surd is an irrational, but every irrational need not be a surd. Justify your answer.

Is ** defined on the set {1,2,3,4,5} by a"*"b = L.C.M. of a and b a binary operation ? Justify your answer.

Let A = {-1,0,1,2},B= {-4,-2,0,2}and f , g , A to B be functions defined by f (x) =x ^(2) - x, x in A and g (x) =2 |x - (1)/(2) |-1, x in A Are f and g equal ? Justify your answer.

What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer.

What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer.

Do you expect the carbon hydrides of the type C_n H_(2n+2) to act as .Lewis. acid or base ? Justify your answer.