MDCAT ECAT Chemistry MCQs

Correct answer D. 14 g

Correct answer B. Propanenitrile

Correct answer A. 4.6 g

Correct answer B. 84.2%

Correct answer B. 4

Correct answer C. two species, the alkyl halide and the nucleophile, take part in the rate-determining step

Correct answer B. Butan-2-ol

Correct answer B. 2-Methylpropan-2-ol

Correct answer C. Concentrated HCl with anhydrous ZnCl₂

Correct answer C. 2-Methylbutan-2-ol

Correct answer C. Propanone

Correct answer A. Ethene

Correct answer D. Ethoxyethane

Correct answer D. Methoxyethane

Correct answer B. the C–X bond is polar, leaving the carbon with a partial positive charge

Correct answer A. R–I > R–Br > R–Cl > R–F

Correct answer A. It occurs in one step and causes inversion of configuration

Correct answer D. CH₃Br

Correct answer A. Formation of a carbocation intermediate in the slow step

Correct answer C. a racemic mixture