Define the terms,with examples.
(i) Brittle
(ii)Ductile
(iii)Maleable
(iv) Elastomer
(v) Explain elastic hysteresis.

Define the terms : (i) Uniform circular motion (ii)Radius vector (iii) period (iv) Angular speed (v) Centripetal acceleration (vi) Centripetal force.

Define the terms : (i) projectile (ii) Velocity of projection (iii) Angle of projection (iv) Trajectory of projectile.

Define the following terms. (i) Resting potential (ii) Action potential (iii) Threshold stimulus / potential

Explain the terms malleable and ductile with examples.

Define and explain. (i) Elastic collision.

Which are mixture and pure substances from the followings? (i) sea water (ii)gasoline (iii) skin (iv) a rusty nail (v) a page of the textbook. (vi) diamond

Define and explain the term molecularity of a reaction. Give examples.

Classify the following as eleemnt and compound. (i) mercuric oxide (ii) helium gas (iii) water (iv) table salt (v) iodine (vi) mercury (vii) oxygen (viii) nitrogen

Draw the structures of the following compounds the carbonyl C are same and classify them on the basis of C-O single bond and C = O double bond present in them: (i) Ethyl alcohol (ii) acetaldehyde (iii) o-nitrophenol (iv) Diethyl ether (v) isopropyl alcohol (vi) acetone.

Explain the terms. (i) Acceleration (ii) average acceleration (iii) instantaneous acceleration