Activated Charcoal is used to remove colouring matter from pure substances by:
Adsorption
The correct answer is: Adsorption. Activated charcoal removes colouring matter from pure substances through adsorption.
Which one of the following nitrogen oxides may dimerize?
Match List I with List II and select the answer using the code given below the Lists:
List I (Physical Quantity) List II (SI Unit)
A. Temperature 1. Kelvin
B. Weight 2. Kilogram
C. Mass 3. Pascal
D. Pressure 4. Newton
Which one of the following oxides is a neutral oxide?