Test Case:A test case is a document that describes an 
input, action, or event and an expected response, to 
determine if a feature of an application is working 
correctly.


Test Scenario:what r the main functionalities u r going to 
test.

Simply we can say test case is "how to test"
and test scenario is "what to test".

Example for a TestScenario: 

Check for a Textbox whether the user can able to numeric 
value or not.

Ex for Test cases;

From the above scenario, we can write the following 
testcases:

1. Check for a +ve number.
2. Check for a -ve Number in the text box.
3. Check for a alphanumeric/special characters in the 
textbox.
4. Check for a "zero" in the text box.

a)	Test scenarios nothing but describes a situation to 
prepare a test case to test a specific functionality.
b)	 In other words test scenarios are thread of 
operations.
c)	Test case is a description of what is to be tested.
d)	Test case is nothing but formal steps and 
instruction
e)	Test case is mainly describes a feature of an 
application is working correctly or not?
f)	Test case is nothing but set of inputs and outputs.

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My phone no is 09246540049
I am in hyderabad
My mail id is ndra_143@yahoo.co.in

a)	Test scenarios nothing but describes a situation to 
prepare a test case to test a specific functionality.
b)	 In other words test scenarios are thread of 
operations.
c)	Test case is a description of what is to be tested.
d)	Test case is nothing but formal steps and 
instruction
e)	Test case is mainly describes a feature of an 
application is working correctly or not?
f)	Test case is nothing but set of inputs and outputs.

Testcase is an action,input or event and expected result
Test scenario is an way of pasibulitys


Simply i can say one thing test case is a how to test 
test scenario is what to test

Test Scenario:

What you are going to test your application/System. It 
means what are things you are going to test like Look & 
Feel, Functionality, Security and Performance. It has 
description, Priority and status (BVT / BAT)

Test Case:

How you are going to test your application/system. It is a 
procedural way to test a application and it contains the 
steps, inputs, expected results, actual results and status.