Sorry dear i have no idea about IR , rest preparing MCQS from Past papers has always been a cutting edge for those aspirants who secured good marks overall. Because 4-5 or you can say that sometime examiner shuffle and copy paste the MCQ portion from the past papers . Many aspirants have observed this examiner technique in papers like Islamiat and relevant optional papers . So it is beneficial to go for the past papers MCQS of every papers, it will definitely give you edge over other students

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Rabbana zalamna anfusana wa in-lam taghfir lana wa-tarhamna la-naku-nanna mina-al-khasireen