GATE CS 2014 Set 3 — Question 2

MCQ+1 / -0.33EasyEnglish Grammar (Tenses, Articles, Prepositions, Conjunctions)Verbal AptitudeGeneral Aptitude

General Aptitude → Verbal Aptitude → English Grammar (Tenses, Articles, Prepositions, Conjunctions)

Last updated 5 September 2026

Question

If she_____________how to calibrate the instrument, she_____________ done the experiment.

Correct answer (C) had known, could have Solution This is a Type 3 conditional sentence (unreal past condition). The structure for a Type 3 conditional is: "If + past perfect, ... would/could/might + have + past participle". Option (C) follows this structure: "If she had known (past perfect) ..., she could have done (modal + have + past participle) ...". Other options do not follow the correct conditional grammar rules. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (C) had known, could have Solution This is a Type 3 conditional sentence (unreal past condition). The structure for a Type 3 conditional is: "If + past perfect, ... would/could/might + have + past participle". Option (C) follows this structure: "If she had known (past perfect) ..., she could have done (modal + have + past participle) ...". Other options do not follow the correct conditional grammar rules.

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