SSC JE Mechanical Engineering 2017 Set 4 Paper

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Question : 55 of 200
 
Marks: +1, -0
Consider the following pairs:
NameFormula(1)Propan−2−olCH3CH2CH2CH2CHO(2)1−Bromo−2,2−dimethylopropane(CH3)CCH2Br(3)MethanalHCHO(4)PentanalCH3–CH(OH)–CH3
Which of the above pairs are correctly matched?
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