Chemistry Questions

Ionic compounds ______.

I. have high boiling point

II. have high melting point

III. conduct electricity in solution

___ is the number of shells for elements of the 3rd period.

Elements having same atomic numbers but different mass number are called ______.

Which of the following is NOT a waste material removed from blood in the kidney?

In a combination reaction there can be ______.

I. two or more than two reactants

II. two or more than two products

III. only one product

Brass gets discoloured in air because of the presence of which of the following gases in air  ?

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

Which of the following statements are CORRECT?

I. Oxides of metals are generally basic.

II. Oxides of non-metals are generally acidic.

III. Non-metals are generally electro positive.