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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#57 If l = 4, the total values of "m" will be:
A) 9
B) 10
C) 6
D) 4
#58 The number of mole of pi bonding electrons in 0.5 mole of CO2 is ?
A) 1 mole
B) 2 mole
C) 1.5 mole
D) 4 mole
#59 The series of hydrogen spectrum in the ultraviolet region is:
A) Lyman series
B) Balmer series
C) Paschen series
D) Brackett series
#60 The bond angle in a methane (CH4) molecule is:
A) 120 degrees
B) 109.5 degrees
C) 90 degrees
D) 180 degrees
#61 Which one has no paired "p" electrons?
A) 6C
B) 8O
C) 11Na
D) 12Mg
#62 Which of the following statements is FALSE for the chemical equation given below in which nitrogen gas reacts with hydrogen gas to form ammonia gas assuming the reaction goes to completion?
N2 + 3H2 → 2NH3
A) The reaction of one mole of H2 will produce 2/3 moles of NH3
B) One mole of N2 will produce two moles of NH3
C) One moleculeof nitrogen requires three molecules of hydrogen for complete reaction
D) The reaction of three moles of hydrogen gas will produce 17g of ammonia
#63 The principal quantum number n primarily indicates the orbital:
A) Shape
B) Orientation
C) Size and energy level
D) Spin
#64 The molecular geometry of a water (H2O) molecule is:
A) Linear
B) Bent
C) Tetrahedral
D) Trigonal planar
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