Which one among the following is correct regarding 20Ne, 23Na+, 19F- and 24Mg2+?
During explosion of gunpowder, which of the following gases are evolved in the proportion of 1 : 3?
The metal constituent of chlorophyll is
The reaction that takes place in soap making is called saponification. Basically soap is sodium or potassium salts of
When a copper rod is dipped in aqueous silver nitrate solution, the colour of the solution changes to blue. This is because
The image formed by a convex mirror of a real object is larger than the object