Find Only Non Null Value from Multiple Row

Question

I have a database structure like this:

 

Ans     Qid

Null       1

8           1

Null       1

Null       1

 

 

I want to find only non null value 8 based on qid,rather than both null and non null value on bais of qid.

 

 i.e my output shouid be like this:

 

Ans   Qid

8         1

 

Please suggest me some sql server query to achieve this