How will you distinguish between ethylamine and diethylamine ?

How will you distinguish between aniline and ethylamine ?

Distinguish between benzylamine and aniline.

How will you distinguish between 2-pentanone and 3-pentanone.

How will you distinguish between formaldehyde and acetaldehyde.

How would you distinguish between (i) methyl alcohol and ethyl alcohol (ii) benzyl alcohol and phenol (iii) ethyl alcohol and benzyl alcohol

Distinguish between particle and wave.

Distinguish between speed and velocity.

How would you distinguish between baking powder and washing soda by heating ?

How will you distinguish between the following pairs of terms : Tetrahedral and octahedral voids. Crystal lattice and unit cell.