Javascript remoting – Explicit

2. What is apex test execution?
 
Exectuing apex test classes

3. What is meant by email services in salesforce?

http://infallibletechie.blogspot.com/2012/12/inbound-email-creating-record-using.html

5. How can we know few time based workflows has been fired and some more are still need to fire?

http://infallibletechie.blogspot.com/2013/05/how-can-we-track-which-time-based.html

6. In an apex invocation how many methods that we can write as future annotations?

10

7. How can we track which time based wf’s are fired and which are in the queue?

http://infallibletechie.blogspot.com/2013/05/how-can-we-track-which-time-based.html