Give brief answers to the following questions:
 
1. Under which category of mixtures will you classify alloys and why?
2. A solution is always a liquid. Comment.
3. Can a solution be heterogeneous?
 
1. Alloys are mixtures since the constituting elements are uniformly mixed in an alloy.
 
2. The given statement is . The solution may also be a solution and  solutions.
 
3. , a solution is always a mixture of two or more substances.