Chemistry Questions

Which of the following statements is/are true or false?

Statements :

A) H2S burns in air to give H2O and SO2

B) The decomposition of Ferrous Sulphate into Fe2O3, SO2 and SO3 occurs in the presence of heat.

Fill in the blank with the most appropriate option.

Ethanol is denatured to ___.

The movement of water molecules through the plasma membrane is called ______.

Isotopes have ______.

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

Which of the following group does NOT follow Newlands Law of Octaves?

Washing soda is used ______.

I. for removing permanent hardness of water

II. for disinfecting drinking water

III. as a cleaning agent for domestic purpose

Apart from proposing atomic theory, what did John Dalton researched on?

Mass number is always equal to ______.