MDCAT ECAT Chemistry MCQs

Correct answer D. 5.92 BM

Correct answer D. 1.73 BM

Correct answer A. Zn²⁺

Correct answer A. Neither the atom nor its only common ion, Zn²⁺, has a partially filled d subshell

Correct answer A. has no 3d electrons available for d-d transitions

Correct answer C. Cr³⁺

Correct answer B. CCl₄

Correct answer C. Silicon dioxide (hydrated) and hydrogen chloride

Correct answer C. Lead prefers the +2 state, so Pb(IV) readily gains electrons to become Pb(II)

Correct answer C. PbO

Correct answer C. 11.2 dm³

Correct answer A. [Ar]3d¹⁰4s¹

Correct answer C. [Ar]3d⁶

Correct answer C. sulphur has one pair of electrons in a 3p orbital, and their mutual repulsion makes one easier to remove

Correct answer B. Fluorine

Correct answer C. Chlorine

Correct answer D. p-block, group 15

Correct answer C. f-block

Correct answer D. Sodium hydroxide and hydrogen

Correct answer D. 1.12 dm³