Gun powder can be used as a propellant rather than powdered sugar and KNO3 depending on the application. Both are explosive, however gun powder is designed to ignite at much higher speeds.
Granulated sugar is just sugar. Powdered sugar has corn starch in it so that it will stay as a powder and not lump.
powdered sugar
No, powdered sugar is is just sugar finely ground.
powdered sugar :0 ?
That's not a good idea. Powdered sugar often contains corn starch which will affect the consistency of the muffin batter.
No
It depends on the powder. It is powdered sugar or powdered lead? One will be much much heavier than the other. You need to know the density of the powder to answer this question.
Caster sugarflouricing sugar / confectioners' sugar / powdered sugar
No, powdered sugar is best for the royal icing that goes on the cookie as decoration. For the actual cookie, use plain granulated sugar.
Yes
Powdered sugar
Powdered sugar is just ground up sucrose. Sucrose is C12H22O11.