That would be a bit difficult in the context of the census, but it would be possible as part of a survey. That type of question was asked during the Longitudinal Survey of Immigrants to Canada.
On April 27th, 2010. See this statement in context.
On April 27th, 2010. See this statement in context.
Chief Specialist, Language Statistics Section, Statistics Canada
That would be a bit difficult in the context of the census, but it would be possible as part of a survey. That type of question was asked during the Longitudinal Survey of Immigrants to Canada.
See context to find out what was said next.