Q. Which of the following factors does NOT affect the adsorption capacity of a solid?
A.
Surface area
B.
Temperature
C.
Nature of the adsorbate
D.
Color of the adsorbent
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Solution
The color of the adsorbent does not affect its adsorption capacity; factors like surface area, temperature, and nature of the adsorbate do.
Correct Answer: D — Color of the adsorbent
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Q. Which of the following factors does NOT affect the adsorption of a gas on a solid?
A.
Temperature
B.
Pressure
C.
Surface area of the solid
D.
Color of the solid
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Solution
The color of the solid does not affect the adsorption of a gas; however, temperature, pressure, and surface area do.
Correct Answer: D — Color of the solid
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Q. Which of the following factors does NOT affect the adsorption of gases on solids?
A.
Temperature
B.
Pressure
C.
Surface area of adsorbent
D.
Color of the adsorbent
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Solution
The color of the adsorbent does not affect the adsorption process; however, temperature, pressure, and surface area do.
Correct Answer: D — Color of the adsorbent
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Q. Which of the following factors does NOT affect the adsorption process?
A.
Temperature
B.
Surface area of adsorbent
C.
Nature of adsorbate
D.
Color of adsorbent
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Solution
The color of the adsorbent does not affect the adsorption process; factors like temperature, surface area, and nature of adsorbate do.
Correct Answer: D — Color of adsorbent
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Q. Which of the following factors does NOT affect the application of Raoult's Law?
A.
Nature of the solute
B.
Temperature
C.
Mole fraction of the solvent
D.
Pressure of the system
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Solution
Raoult's Law is primarily affected by the nature of the solute, temperature, and mole fraction of the solvent, but not by the pressure of the system.
Correct Answer: D — Pressure of the system
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Q. Which of the following factors does NOT affect the enthalpy change of a reaction?
A.
Nature of reactants
B.
Temperature
C.
Pressure
D.
Pathway of the reaction
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Solution
The enthalpy change of a reaction is independent of the pathway taken, as it is a state function.
Correct Answer: D — Pathway of the reaction
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Q. Which of the following factors does NOT affect the entropy of a system?
A.
Temperature
B.
Volume
C.
Pressure
D.
Nature of the substance
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Solution
While temperature, volume, and the nature of the substance affect entropy, pressure does not directly affect the entropy of a system in a significant way.
Correct Answer: C — Pressure
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Q. Which of the following factors does NOT affect the equilibrium constant (K) of a reaction?
A.
Temperature
B.
Concentration of reactants
C.
Pressure
D.
Nature of reactants and products
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Solution
The equilibrium constant K is only affected by temperature. Changes in concentration or pressure will shift the position of equilibrium but not change the value of K.
Correct Answer: B — Concentration of reactants
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Q. Which of the following factors does NOT affect the equilibrium constant (K)?
A.
Temperature
B.
Concentration of reactants
C.
Pressure
D.
Nature of reactants and products
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Solution
The equilibrium constant K is only affected by temperature. Changes in concentration or pressure will shift the position of equilibrium but not change the value of K.
Correct Answer: B — Concentration of reactants
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Q. Which of the following factors does NOT affect the equilibrium constant of a reaction?
A.
Temperature
B.
Concentration of reactants
C.
Pressure
D.
Nature of reactants
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Solution
The equilibrium constant is only affected by temperature; changes in concentration or pressure do not affect it.
Correct Answer: B — Concentration of reactants
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Q. Which of the following factors does NOT affect the Gibbs Free Energy of a system?
A.
Temperature
B.
Pressure
C.
Concentration of reactants
D.
Nature of the solvent
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Solution
While temperature, pressure, and concentration of reactants affect Gibbs Free Energy, the nature of the solvent does not directly affect ΔG.
Correct Answer: D — Nature of the solvent
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Q. Which of the following factors does NOT affect the position of equilibrium?
A.
Concentration of reactants
B.
Temperature
C.
Pressure
D.
Catalyst
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Solution
A catalyst speeds up the rate of reaching equilibrium but does not affect the position of the equilibrium itself.
Correct Answer: D — Catalyst
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Q. Which of the following factors does NOT affect the pressure of a gas?
A.
Volume
B.
Temperature
C.
Number of moles
D.
Color of the gas
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Solution
The color of the gas does not affect its pressure; pressure is affected by volume, temperature, and number of moles.
Correct Answer: D — Color of the gas
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Q. Which of the following factors does NOT affect the rate of a chemical reaction?
A.
Concentration of reactants
B.
Temperature
C.
Presence of a catalyst
D.
Color of the reactants
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Solution
The color of the reactants does not affect the rate of a chemical reaction.
Correct Answer: D — Color of the reactants
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Q. Which of the following factors does NOT affect the rate of adsorption?
A.
Surface area of adsorbent
B.
Temperature
C.
Pressure of gas
D.
Color of adsorbent
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Solution
The color of the adsorbent does not affect the rate of adsorption.
Correct Answer: D — Color of adsorbent
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Q. Which of the following factors does NOT affect the rate of diffusion of a gas?
A.
Molar mass
B.
Temperature
C.
Pressure
D.
Volume of the container
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Solution
The volume of the container does not affect the rate of diffusion of a gas; it is primarily affected by molar mass, temperature, and pressure.
Correct Answer: D — Volume of the container
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Q. Which of the following factors does NOT affect the solubility of a gas in a liquid?
A.
Temperature
B.
Pressure
C.
Nature of solute
D.
Volume of solvent
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Solution
The volume of solvent does not directly affect the solubility of a gas; pressure and temperature do.
Correct Answer: D — Volume of solvent
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Q. Which of the following factors does NOT affect the vapor pressure of a liquid?
A.
Temperature
B.
Nature of the liquid
C.
Surface area
D.
Presence of impurities
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Solution
Surface area does not significantly affect the vapor pressure of a liquid.
Correct Answer: C — Surface area
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Q. Which of the following factors does NOT affect the vapor pressure of a solution according to Raoult's Law?
A.
Nature of the solute
B.
Temperature
C.
Mole fraction of the solvent
D.
Pressure of the system
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Solution
Raoult's Law states that the vapor pressure is affected by the nature of the solute, temperature, and mole fraction of the solvent, but not by the pressure of the system.
Correct Answer: D — Pressure of the system
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Q. Which of the following factors does NOT affect the viscosity of a liquid?
A.
Temperature
B.
Molecular weight
C.
Pressure
D.
Surface area
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Solution
Surface area does not significantly affect the viscosity of a liquid.
Correct Answer: D — Surface area
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Q. Which of the following gases behaves most ideally under standard conditions?
A.
NH3
B.
CO2
C.
He
D.
H2O
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Solution
Helium (He) behaves most ideally under standard conditions due to its low intermolecular forces.
Correct Answer: C — He
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Q. Which of the following gases has the highest density at STP?
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Solution
CO2 has the highest density at STP among the given gases.
Correct Answer: D — CO2
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Q. Which of the following gases has the highest rate of diffusion at the same temperature?
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Solution
According to Graham's law, lighter gases diffuse faster; H2 has the lowest molar mass.
Correct Answer: D — H2
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Q. Which of the following gases is most likely to behave ideally?
A.
NH3
B.
H2O
C.
He
D.
CO2
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Solution
Helium (He) behaves most ideally due to its small size and weak intermolecular forces.
Correct Answer: C — He
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Q. Which of the following gases will diffuse the fastest under identical conditions?
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Solution
According to Graham's law of effusion, lighter gases diffuse faster; hence, He will diffuse the fastest.
Correct Answer: A — He
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Q. Which of the following gases will have the highest rate of diffusion at a given temperature?
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Solution
According to Graham's law of effusion, lighter gases diffuse faster; H2 has the lowest molar mass and will diffuse the fastest.
Correct Answer: D — H2
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Q. Which of the following gases will have the highest rate of diffusion at the same temperature?
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Solution
According to Graham's law, lighter gases diffuse faster. H2 has the lowest molar mass.
Correct Answer: D — H2
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Q. Which of the following gases would have the highest rate of diffusion at a given temperature?
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Solution
Hydrogen (H2) has the lowest molar mass and thus the highest rate of diffusion according to Graham's law.
Correct Answer: D — H2
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Q. Which of the following has a bent molecular geometry?
A.
CO2
B.
H2O
C.
CH4
D.
BF3
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Solution
H2O has two lone pairs and two bonding pairs, resulting in a bent geometry.
Correct Answer: B — H2O
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Q. Which of the following has a bond angle of approximately 120 degrees?
A.
H2O
B.
NH3
C.
BF3
D.
CH4
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Solution
BF3 has a trigonal planar geometry with bond angles of approximately 120 degrees.
Correct Answer: C — BF3
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