Chemistry Questions

Which one of the following statements would be INCORRECT to use?

Plaster of Paris ______.

I. changes into gypsum on mixing with water

II. is CaSO4.2H2O

III. is used for decoration

Which statement(s) is/are CORRECT regarding Dalton’s Atomic theory?

I. All matters are made of very tiny particles.

II. Atoms of different elements have different masses and chemical properties.

III. The relative number of atoms is variable in any compound.

Charge on proton is equal to the charge on ______.

Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?

The most reactive of the following metals is

The vast amount of sea weeds present in oceans may produce an endless source of

 A mixture of sand and naphthalene can be separated by