Rohatgi refuted allegations on the timing of the notification to make NJAC Act operational by saying that it was absolutely proper for the government to come out with the notification.
He said the central government is answerable to Parliament and if Parliament has passed the law, it cannot be put in limbo indefinitely.
He said the will of Parliament and ratification by 20 state assemblies has to be given effect and the notification has come at an appropriate time.
Rohatgi also opposed the stand of SCAORA on recusal to Justice Dave, saying that it is a well known fact that judges fulfil more than one role. They have been a part of earlier collegium also and while continuing to discharge judicial function, they were involved in administrative measures too.
"So, they can be a part of new judicial commission apart from doing judicial functions," the AG said, adding that for hundred years it has been seen that administrative decisions of full court are often challenged on judicial side and same judges of full court decide them, "so that there is no conflict of interest".
Rohatgi said if there was any objection on Justice Dave heading the bench, it would have come on day one, but the petitioners including SCAORA took their chance before the three-judge bench before the matter was referred to the Constitution Bench.
"No such contention was raised by SCAORA and if this contention is correct, then a large number of judges cannot hear the case," he said.
Besides Justice Dave, others in the five-judge bench, constituted by the Chief Justice, were Justices J Chelameswar, Madan B lokur, Kurian Joseph and Adarsh Kumar Goel.
A three-judge bench of the apex court had on April 7 referred to a five-judge Constitution Bench a batch of petitions challenging the validity of NJAC Act to replace the collegium system of appointing judges to higher judiciary.
The court had refused to stay the implementation of law with the observation that all the issues arising out of the petitions would be decided by the Constitution Bench.