Unsaturated hydrocabons contains multiple bonds between the two C-atoms and show addition reaction. Give the test to distinguish ethane from ethene.

Give one test to distinguish between ethene and ethyne.

Give one chemical test to distinguish between C_2H_5Br and C_6H_5Br .

If the reaction between A and B to give C shows first order kinetics in A and Second order in B, the rate equation can be writen as :

A copper atom consists of copper nucleus surrounded by 29 electrons. The atomic weight of copper is 63.5mol e^(-1) . Let us now take two pieces of copper each weighing 10g. Let us trandfer one elcetron from one piece to another for every 100 atoms in that piece. What will be the Coulomb force between the two pieces after the trandfer of electrons, if they are 1cm apart? Avogadro number= 6xx10^(23) mol e^(-1) , charge on an electron =- 1.6xx10^(-19)C.

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion: Electric field intensity at a point in between two parallel opposite charged infinite sheets depends on surface charged denstiy sigma . Reason:Electric field intensity at a point is the force experinced by a unit positive test charge place at that point.

Give simple chemical tests to distinguish between the following pairs of compounds Ethanal and propanal

Give simple chemical tests to distinguish between the following pairs of compounds Ethanal and propanal

Consider ‘postulate’ given below. Given any two distinct points A and B, there exists a third point C which is between A and B. Do this postulate contains any undefined term ? Is this postulate consistent ? Do they follow from Euclid’s postulate ? Explain.

Give simple chemical tests to distinguish between the following pairs of compounds. Ethanal and Propanal