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Chemistry 1488 MCQs [All-Courses]

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

All Topics  1488

Ideal gasses have all the following characteristics except ?
A Absence of intermolecular forces
B Collisions among the molecules of an ideal gas are perfectly elastic
C The molecules occupy no space
D All of the above are correct
Correct Answer: The molecules occupy no space
Which of the following is not considered as an intermolecular force between molecules ?
A Coordinate covalent bonds
B Hydrogen bonds
C Debye forces
D London dispersion forces
Correct Answer: Coordinate covalent bonds
What is the relative rate of effusion of CO and CO2 ?
A CO is 1.25 times faster than CO2
B CO is 3.75 times faster than CO2
C CO is 1.25 times faster than CO
D Both diffuse at the same rate
Correct Answer: CO is 1.25 times faster than CO2
on sp3 hybridization ________________?
A All p-orbitals are involved
B One s and 3 p-orbitals are involved
C one p-orbital is involved
D four p-orbitals are involved
Correct Answer: One s and 3 p-orbitals are involved
Product of charge and distance is called__________________?
A Pressure
B Bond length
C Work
D Dipole moment
Correct Answer: Dipole moment
Unpaired electron in a molecule gives ______________ character ?
A Ferromagnetic
B Paramagnetic
C Diamagnetism
D Both A & B
Correct Answer: Paramagnetic
According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________?
A Triangular
B Square planner
C Trigonal bipyramidal
D Octahedral
Correct Answer: Octahedral
Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?
A 3 bond pair one lone pair
B 2 bond pair 2 lone pair
C 1 bond pair 3 lone pair
D 3 lone pair 1 bond pair
Correct Answer: 3 bond pair one lone pair
Orbitals of same energy produced after mixing of orbitals of different energy are called __________________?
A Degenerate orbitals
B Generate orbitals
C Hybrid orbitals
D Zeeman orbitals
Correct Answer: Degenerate orbitals
Sharing of 1 electron pair by one specie forms_________________?
A Single covalent bond
B Hydrogen bond
C Double covalent bond
D Coordinate covalent bond
Correct Answer: Coordinate covalent bond
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