Chemistry Top 100 Repeated MCQs
MDCAT · NUMS · FSc · Entry Test — most asked Chemistry questions with answers
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These Chemistry MCQs are picked from high-yield FSc chapters and mix sets — the kind of questions that appear again and again in MDCAT, NUMS, and board exams. Use page navigation below to practice all 100 MCQs, then try the Chemistry mock test.
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#49 The number of orbitals present in 6th orbit:
A) 36
B) 25
C) 15
D) 14
#50 How many moles of all atoms are there in 1.5 mole of H2SO4 ?
A) 7.6 mole
B) 8.5 mole
C) 10.5 mole
D) 12.8 mole
#51 Most of the volume of an atom is:
A) Empty space
B) Nucleus
C) Protons
D) Neutrons
#52 Which of the following molecules has a square planar geometry?
A) XeF4
B) SF6
C) NH3
D) H2O
#53 Which one can explain the size of orbit?
A) n
B) l
C) m
D) s
#54 How many mole of covalent bond are there in 0.5 mole of NH3 ?
A) 1.5 mole
B) 3 mole
C) 3.5 mole
D) 4 mole
#55 The visible lines of the hydrogen spectrum constitute the:
A) Lyman series
B) Balmer series
C) Paschen series
D) Pfund series
#56 Which hybridization is observed in the central atom of a carbon dioxide (CO2) molecule?
A) sp3
B) sp2
C) sp
D) sp3d
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