Q. In an RLC circuit, if the resistance is increased, what happens to the quality factor (Q)? (2021)
-
A.
Increases
-
B.
Decreases
-
C.
Remains the same
-
D.
Becomes zero
Solution
The quality factor Q is inversely proportional to resistance. Increasing resistance decreases Q.
Correct Answer:
B
— Decreases
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Q. In an RLC circuit, what does the term 'resonance' refer to? (2019)
-
A.
Maximum current at a specific frequency
-
B.
Minimum current at any frequency
-
C.
Constant voltage
-
D.
Zero inductance
Solution
Resonance in an RLC circuit occurs when the inductive reactance equals the capacitive reactance, resulting in maximum current at a specific frequency.
Correct Answer:
A
— Maximum current at a specific frequency
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Q. In an RLC circuit, what happens to the impedance at resonance? (2023)
-
A.
Minimum
-
B.
Maximum
-
C.
Zero
-
D.
Infinite
Solution
At resonance, the impedance in an RLC circuit is at a minimum.
Correct Answer:
A
— Minimum
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Q. In an RLC circuit, what happens to the impedance when the circuit is at resonance? (2023)
-
A.
Minimum
-
B.
Maximum
-
C.
Zero
-
D.
Infinite
Solution
At resonance, the impedance of an RLC circuit is at its minimum.
Correct Answer:
A
— Minimum
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Q. In an RLC series circuit, if the inductive reactance is greater than the capacitive reactance, the circuit is said to be: (2022)
-
A.
Resonant
-
B.
Inductive
-
C.
Capacitive
-
D.
Purely resistive
Solution
If the inductive reactance (XL) is greater than the capacitive reactance (XC), the circuit is inductive.
Correct Answer:
B
— Inductive
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Q. In an RLC series circuit, if the resistance is 10 Ω, inductance is 0.1 H, and capacitance is 100 μF, what is the resonant frequency? (2023)
-
A.
50 Hz
-
B.
100 Hz
-
C.
159 Hz
-
D.
200 Hz
Solution
The resonant frequency f0 = 1/(2π√(LC)) = 1/(2π√(0.1 * 100e-6)) = 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the resistance is 10 Ω, the inductance is 0.1 H, and the capacitance is 100 μF, what is the resonant frequency? (2023)
-
A.
50 Hz
-
B.
100 Hz
-
C.
159 Hz
-
D.
200 Hz
Solution
The resonant frequency f0 = 1/(2π√(LC)) = 1/(2π√(0.1 * 100e-6)) = 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the resistance is 10Ω, the inductance is 0.1H, and the capacitance is 100μF, what is the resonant frequency? (2020)
-
A.
50 Hz
-
B.
100 Hz
-
C.
159 Hz
-
D.
200 Hz
Solution
Using f = 1/(2π√(LC)), we find f = 1/(2π√(0.1 * 100e-6)) ≈ 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the total impedance is 20Ω and the resistance is 15Ω, what is the inductive reactance? (2022)
-
A.
5Ω
-
B.
10Ω
-
C.
15Ω
-
D.
20Ω
Solution
Using Z = √(R² + (XL)²), solve for XL.
Correct Answer:
A
— 5Ω
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Q. In an RLC series circuit, if the total impedance is 20Ω and the resistance is 15Ω, what is the reactance? (2022)
-
A.
5Ω
-
B.
10Ω
-
C.
15Ω
-
D.
20Ω
Solution
Using Z = √(R² + X²), we find X = √(Z² - R²). Here, Z = 20Ω, R = 15Ω.
Correct Answer:
A
— 5Ω
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Q. In an RLC series circuit, if the total impedance is 50 ohms and the resistance is 30 ohms, what is the reactance? (2020)
-
A.
40 ohms
-
B.
30 ohms
-
C.
20 ohms
-
D.
10 ohms
Solution
Using Z = √(R² + X²), we find X = √(Z² - R²) = √(50² - 30²) = √(2500 - 900) = √1600 = 40 ohms.
Correct Answer:
A
— 40 ohms
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Q. In an RLC series circuit, what happens to the impedance at resonance? (2020)
-
A.
It is minimum
-
B.
It is maximum
-
C.
It is zero
-
D.
It is equal to resistance
Solution
At resonance in an RLC series circuit, the impedance is equal to the resistance.
Correct Answer:
D
— It is equal to resistance
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Q. In angiosperms, the ovary develops into which of the following structures? (2023)
-
A.
Seed
-
B.
Fruit
-
C.
Flower
-
D.
Leaf
Solution
In angiosperms, the ovary develops into a fruit, which contains the seeds.
Correct Answer:
B
— Fruit
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Q. In ecological succession, what is the term for the first species to colonize a barren environment? (2022)
-
A.
Pioneer species
-
B.
Climax community
-
C.
Keystone species
-
D.
Invasive species
Solution
Pioneer species are the first organisms to colonize previously uninhabited or disturbed environments.
Correct Answer:
A
— Pioneer species
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Q. In electrolysis, if 1 mole of electrons is transferred, how many grams of copper can be deposited from Cu²⁺?
-
A.
63.5 g
-
B.
31.75 g
-
C.
127 g
-
D.
159 g
Solution
1 mole of Cu²⁺ deposits 63.5 g of copper.
Correct Answer:
A
— 63.5 g
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Q. In electrolysis, if the current is 2 A and the time is 30 minutes, how many moles of electrons are transferred?
-
A.
0.1 mol
-
B.
0.2 mol
-
C.
0.3 mol
-
D.
0.4 mol
Solution
Using the formula: moles = (current × time) / (n × F), where n=1 for electrons and F=96500 C/mol.
Correct Answer:
B
— 0.2 mol
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Q. In electrolysis, the process of oxidation occurs at the: (2023)
-
A.
Anode
-
B.
Cathode
-
C.
Electrolyte
-
D.
None of the above
Solution
In electrolysis, oxidation occurs at the anode.
Correct Answer:
A
— Anode
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Q. In electrolysis, the process of oxidation occurs at the: (2023) 2023
-
A.
Anode
-
B.
Cathode
-
C.
Electrolyte
-
D.
None of the above
Solution
In electrolysis, oxidation occurs at the anode.
Correct Answer:
A
— Anode
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Q. In electrolysis, the process of oxidation occurs at which electrode? (2019)
-
A.
Anode
-
B.
Cathode
-
C.
Both electrodes
-
D.
None of the above
Solution
In electrolysis, oxidation occurs at the anode.
Correct Answer:
A
— Anode
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Q. In electrolysis, what is produced at the anode when NaCl solution is electrolyzed? (2022)
-
A.
Hydrogen gas
-
B.
Chlorine gas
-
C.
Sodium metal
-
D.
Oxygen gas
Solution
Chlorine gas is produced at the anode during the electrolysis of NaCl solution.
Correct Answer:
B
— Chlorine gas
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Q. In flowering plants, the male gamete is produced in which part? (2021)
-
A.
Ovary
-
B.
Anther
-
C.
Stigma
-
D.
Style
Solution
The male gamete is produced in the anther, which is part of the stamen in flowering plants.
Correct Answer:
B
— Anther
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Q. In flowering plants, the male gametes are produced in which part? (2022)
-
A.
Ovary
-
B.
Stigma
-
C.
Anther
-
D.
Style
Solution
The male gametes are produced in the anther, which is part of the stamen in flowering plants.
Correct Answer:
C
— Anther
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Q. In flowering plants, the ovary develops into which part after fertilization? (2023)
-
A.
Seed
-
B.
Fruit
-
C.
Flower
-
D.
Leaf
Solution
After fertilization, the ovary develops into a fruit, which contains the seeds.
Correct Answer:
B
— Fruit
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Q. In flowering plants, the ovary develops into which structure after fertilization? (2023)
-
A.
Seed
-
B.
Fruit
-
C.
Flower
-
D.
Leaf
Solution
After fertilization, the ovary develops into a fruit, which contains the seeds.
Correct Answer:
B
— Fruit
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Q. In flowering plants, the process of fusion of male and female gametes is known as? (2019)
-
A.
Pollination
-
B.
Fertilization
-
C.
Germination
-
D.
Seed dispersal
Solution
Fertilization is the process where the male gamete (pollen) fuses with the female gamete (ovule) to form a zygote.
Correct Answer:
B
— Fertilization
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Q. In flowering plants, the process of pollination involves the transfer of pollen from the ____ to the ____. (2019)
-
A.
Ovary, Stigma
-
B.
Anther, Stigma
-
C.
Stigma, Ovary
-
D.
Filament, Anther
Solution
Pollination is the transfer of pollen from the anther (male part) to the stigma (female part) of a flower.
Correct Answer:
B
— Anther, Stigma
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Q. In flowering plants, the process of pollination involves the transfer of pollen from the anther to the: (2021)
-
A.
Ovary
-
B.
Style
-
C.
Stigma
-
D.
Sepal
Solution
Pollination is the transfer of pollen from the anther to the stigma of a flower, which is essential for fertilization.
Correct Answer:
C
— Stigma
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Q. In fluid mechanics, what does the term 'streamline' refer to? (2020)
-
A.
Path of a fluid particle
-
B.
Layer of fluid
-
C.
Viscous flow
-
D.
Turbulent flow
Solution
A streamline refers to the path followed by a fluid particle in a steady flow.
Correct Answer:
A
— Path of a fluid particle
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Q. In how many ways can 3 different colored balls be arranged in a row? (2015)
Solution
The number of arrangements of 3 different colored balls is 3! = 6.
Correct Answer:
A
— 6
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Q. In how many ways can 3 different fruits be selected from a basket of 7 fruits? (2014)
Solution
The number of ways to select 3 from 7 is C(7, 3) = 35.
Correct Answer:
A
— 35
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