Vapour pressure of water at 100°C is___________________?
A. 550 mm Hg
B. 760 mm Hg
C. 355 mm Hg
D. 1489 mm Hg
Submitted by :- Jamil Ahmed
CHEMISTRY
Prepare for your upcoming test with a comprehensive collection of Chemistry multiple-choice questions (MCQs), ranging from basic to advanced topics. These Chemistry MCQs cover various sections of the subject, providing you with valuable practice and boosting your chances of scoring well in the Chemistry portion of the test. Whether you’re a student or a job seeker preparing for exams, these MCQs will prove beneficial for your test preparation.
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When substance moves from a solid to a liquid state all of the following changes occur except__________________?
A. Molecules become more disordered
B. K.E of the molecules decreases
C. Intermolecular forces become weaker
D. Molecule become further separated
Submitted by :- Jamil Ahmed
Which of the following has strongest intermolecular forces of attraction ?
A. Hydrogen (H2)
B. Chlorine (Cl2)
C. lodine (I2)
D. Methane (CH4)
Submitted by :- Jamil Ahmed
________________ is study about energy of a chemical system ?
A. thermochemistry
B. thermodynamics
C. chemical kinetics
D. stoichiometry
Submitted by :- Jamil Ahmed
Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?
A. More strength of H-bonding
B. More strength of London forces
C. Less polarizability
D. All of the above
Submitted by :- Jamil Ahmed
Amorphous substances posses_________________?
A. No definite geometry
B. No definite heat of fusion
C. No sharp melting points
D. All of the above
Submitted by :- Jamil Ahmed
A solid may be made up of_________________?
A. Atoms
B. Ions
C. Molecules
D. A, B, and C
Submitted by :- Jamil Ahmed
If we provide very high amount of heat to a liquid its boiling point will__________________?
A. increase
B. remains constant
C. decrease
D. there will be no boiling
Submitted by :- Jamil Ahmed
Which one of the following has highest volatility_________________?
A. Diethyl ether
B. Ethyl alcohol
C. Water
D. Ethylene glycol
Submitted by :- Jamil Ahmed
During which process empty spaces between particles become minimum ?
A. ionization
B. condensation
C. fusion
D. evaporation
Submitted by :- Jamil Ahmed