The boiling point of liquids vary as
1). pressure varies
2). temperature varies
3). volume varies
4). density varies
3. The inexpensive and commonly used variety of glass is called soda glass. It is called so because
4. In which of the following ions , the colour is not due to d-d transition ?
5. The amount of chlorine available in water after disinfection is: called as
8. A change in which a substance undergoes a change in its physical properties is called _____________.