Q. What is the effect of high protein intake on urea production? (2022)
A.
Decreases urea production
B.
Increases urea production
C.
No effect on urea production
D.
Increases ammonia production
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Solution
High protein intake increases the production of urea as more amino acids are metabolized.
Correct Answer:
B
— Increases urea production
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Q. What is the effect of increasing pressure on a gas at constant temperature? (2014)
A.
Volume increases
B.
Volume decreases
C.
No effect on volume
D.
Gas becomes a liquid
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Solution
According to Boyle's Law, increasing pressure on a gas at constant temperature results in a decrease in volume.
Correct Answer:
B
— Volume decreases
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Q. What is the effect of increasing pressure on the equilibrium of the reaction: 2N2(g) + 3H2(g) ⇌ 2NH3(g)? (2021)
A.
Shift to the left
B.
Shift to the right
C.
No effect
D.
Increase in temperature
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Solution
Increasing pressure shifts the equilibrium towards the side with fewer moles of gas. In this case, it shifts to the right, producing more NH3.
Correct Answer:
B
— Shift to the right
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Q. What is the effect of increasing resistance in a series RLC circuit at resonance? (2023)
A.
Increases current
B.
Decreases current
C.
No effect on current
D.
Increases voltage
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Solution
Increasing resistance in a series RLC circuit at resonance will decrease the current, as the impedance increases.
Correct Answer:
B
— Decreases current
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Q. What is the effect of increasing temperature on chemisorption? (2022)
A.
Increases adsorption
B.
Decreases adsorption
C.
No effect
D.
Depends on the gas
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Solution
Chemisorption is an exothermic process, and increasing temperature generally decreases the extent of chemisorption.
Correct Answer:
B
— Decreases adsorption
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Q. What is the effect of increasing temperature on the conductivity of an electrolyte solution? (2019)
A.
Increases conductivity
B.
Decreases conductivity
C.
No effect
D.
Depends on the electrolyte
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Solution
Increasing temperature generally increases the conductivity of an electrolyte solution due to increased ion mobility.
Correct Answer:
A
— Increases conductivity
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Q. What is the effect of increasing temperature on the kinetic energy of particles in a solid? (2023)
A.
Decreases kinetic energy
B.
Increases kinetic energy
C.
No effect
D.
Causes phase change
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Solution
Increasing temperature increases the kinetic energy of particles, leading to potential phase change.
Correct Answer:
B
— Increases kinetic energy
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Q. What is the effect of increasing temperature on the viscosity of liquids? (2019)
A.
Increases viscosity
B.
Decreases viscosity
C.
No effect
D.
Depends on the liquid
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Solution
Increasing temperature generally decreases the viscosity of liquids, allowing them to flow more easily.
Correct Answer:
B
— Decreases viscosity
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Q. What is the effect of increasing temperature on the volume of a gas at constant pressure?
A.
Volume decreases
B.
Volume increases
C.
Volume remains constant
D.
Volume fluctuates
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Solution
According to Charles's Law, increasing the temperature of a gas at constant pressure increases its volume.
Correct Answer:
B
— Volume increases
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Q. What is the effect of increasing the area of the plates of a capacitor on its capacitance? (2022)
A.
Increases capacitance
B.
Decreases capacitance
C.
No effect
D.
Capacitance becomes zero
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Solution
Increasing the area A of the plates increases the capacitance, as C = εA/d.
Correct Answer:
A
— Increases capacitance
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Q. What is the effect of increasing the capacitance in a capacitive AC circuit on the current? (2022)
A.
Increases current
B.
Decreases current
C.
No effect
D.
Current becomes zero
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Solution
Increasing capacitance increases the current in a capacitive AC circuit, as current I = V/Xc.
Correct Answer:
A
— Increases current
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Q. What is the effect of increasing the capacitance in a capacitive AC circuit? (2023)
A.
Increases current
B.
Decreases current
C.
No effect on current
D.
Increases voltage
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Solution
In a capacitive AC circuit, increasing the capacitance decreases the capacitive reactance (X_C), which increases the current (I = V/X_C).
Correct Answer:
A
— Increases current
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Q. What is the effect of increasing the capacitance in an AC circuit? (2019)
A.
Increases inductive reactance
B.
Decreases capacitive reactance
C.
Increases total impedance
D.
Decreases total current
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Solution
Increasing the capacitance decreases the capacitive reactance (X_C = 1/(2πfC)), which can lead to an increase in current.
Correct Answer:
B
— Decreases capacitive reactance
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Q. What is the effect of increasing the concentration of reactants on the rate of reaction? (2023)
A.
Increases the rate
B.
Decreases the rate
C.
No effect
D.
Depends on the reaction
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Solution
Increasing the concentration of reactants generally increases the rate of reaction due to more frequent collisions.
Correct Answer:
A
— Increases the rate
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Q. What is the effect of increasing the current in a coil on the magnetic field produced? (2022)
A.
Increases the magnetic field
B.
Decreases the magnetic field
C.
No effect
D.
Reverses the magnetic field
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Solution
Increasing the current in a coil increases the magnetic field produced by the coil.
Correct Answer:
A
— Increases the magnetic field
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Q. What is the effect of increasing the current in a solenoid on its magnetic field strength? (2021)
A.
Increases
B.
Decreases
C.
No effect
D.
Reverses direction
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Solution
Increasing the current in a solenoid increases its magnetic field strength, as the magnetic field is directly proportional to the current.
Correct Answer:
A
— Increases
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Q. What is the effect of increasing the distance between the plates of a capacitor on its capacitance? (2022)
A.
Increases capacitance
B.
Decreases capacitance
C.
No effect
D.
Doubles capacitance
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Solution
Increasing the distance between the plates of a capacitor decreases its capacitance, as capacitance is inversely proportional to the distance.
Correct Answer:
B
— Decreases capacitance
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Q. What is the effect of increasing the frequency of AC on the inductive reactance? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
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Solution
Inductive reactance increases with the frequency of AC.
Correct Answer:
A
— Increases
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Q. What is the effect of increasing the frequency of an AC source on the inductive reactance? (2023)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
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Solution
Increasing the frequency of an AC source increases the inductive reactance.
Correct Answer:
A
— Increases
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Q. What is the effect of increasing the frequency of the AC supply on the inductive reactance? (2020)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
Inductive reactance increases with frequency, as X_L = 2πfL.
Correct Answer:
A
— Increases
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Q. What is the effect of increasing the frequency on the capacitive reactance in an AC circuit? (2022)
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
Capacitive reactance Xc = 1/(2πfC), so increasing frequency decreases Xc.
Correct Answer:
B
— Decreases
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Q. What is the effect of increasing the frequency on the impedance of a capacitor in an AC circuit? (2020)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes infinite
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Solution
The capacitive reactance decreases with increasing frequency, thus decreasing the impedance.
Correct Answer:
B
— Decreases
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Q. What is the effect of increasing the frequency on the impedance of a capacitor? (2023)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes infinite
Show solution
Solution
The impedance of a capacitor decreases with increasing frequency.
Correct Answer:
B
— Decreases
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Q. What is the effect of increasing the frequency on the inductive reactance in an AC circuit? (2022)
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
Inductive reactance Xl = ωL increases with frequency since Xl = 2πfL.
Correct Answer:
A
— Increases
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Q. What is the effect of increasing the frequency on the total impedance of an RLC circuit? (2020)
A.
It always increases
B.
It always decreases
C.
It can increase or decrease
D.
It remains constant
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Solution
The total impedance can increase or decrease depending on the relationship between R, XL, and XC as frequency changes.
Correct Answer:
C
— It can increase or decrease
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Q. What is the effect of increasing the number of turns in a coil on its inductance? (2023)
A.
Increases inductance
B.
Decreases inductance
C.
No effect
D.
Depends on the material
Show solution
Solution
Increasing the number of turns in a coil increases its inductance.
Correct Answer:
A
— Increases inductance
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Q. What is the effect of increasing the number of turns in a coil on the magnetic field strength produced by it? (2022)
A.
Increases the field strength
B.
Decreases the field strength
C.
No effect
D.
Reverses the field direction
Show solution
Solution
Increasing the number of turns in a coil increases the magnetic field strength produced by it, as the field strength is directly proportional to the number of turns.
Correct Answer:
A
— Increases the field strength
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Q. What is the effect of increasing the number of turns in a solenoid on its magnetic field strength? (2022)
A.
Decreases the field strength
B.
Increases the field strength
C.
No effect
D.
Reverses the field direction
Show solution
Solution
Increasing the number of turns (n) in a solenoid increases the magnetic field strength, as B = μ₀nI.
Correct Answer:
B
— Increases the field strength
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Q. What is the effect of increasing the plate area of a parallel plate capacitor on its capacitance? (2022)
A.
Increases capacitance
B.
Decreases capacitance
C.
No effect
D.
Capacitance becomes zero
Show solution
Solution
Increasing the plate area A of a parallel plate capacitor increases its capacitance, as C = ε₀A/d.
Correct Answer:
A
— Increases capacitance
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Q. What is the effect of increasing the resistance in a circuit while keeping the voltage constant? (2019)
A.
Current increases
B.
Current decreases
C.
Current remains the same
D.
Voltage increases
Show solution
Solution
According to Ohm's law, if resistance increases while voltage remains constant, current decreases.
Correct Answer:
B
— Current decreases
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