If you want to watch the question - and the expected seven or eight minutes of "supplementaries" - it is available live (and for a month thereafter) on http://www.parliamentlive.tv/Main/Home.aspx
The usual practice is that the person asking the question stands up and says
“My Lords, I beg leave to ask the question standing in my name on
the order paper.”
A representative of the Government (Unlike the House of Commons questions are directed to the Government, not an individual Department), usually the Minister for the Department felt most appropriate to answer, gives an answer of no more than 75 words. The original questioner asks a supplementary - and other Peers can ask relevant supplementaries for approximately 7 minutes.