Do not misrepresent, lie, ect ect. Read the forms carefully and answer honestly. Otherwise there's always the risk of it haunting you later in life.
Recently, IRB squashed a woman's appeal to an exclusion. She didn't mention her sister in a spousal sponsorship application, namely part of her PR app. The sister who she didn't mention, made a refugee claim. Some 3rd party tipped IRCC about the misrepresentation. End result deportation.
You can read the decision here:
https://www.canlii.org/en/ca/irb/doc/2018/2018canlii129883/2018canlii129883.html?searchUrlHash=AAAAAQAWTWlzcmVwcmVzZW50ZWQgc2libGluZwAAAAAB&resultIndex=19
Lesson is, don't lie and double check you're telling the truth.