Difference between LINQ Queries & Lambda expression

Question

Why to use lambda expression when we have LINQ queries just to shorten the length of code , increase the speed of development or is there any other reason which can only be

Answer 1

any other reason which can only be achieved by Lambda expression & not by LINQ queries.

There are some LINQ extension methods which do not have counterparts in LINQ query expressions, and will require the use of Lambda Expressions. A good example is Enumerable.ToLookup - if you want to create an ILookup, you need to use lambdas to generate this.