Q. What is the bond order of the CO molecule?
Show solution
Solution
CO has a bond order of 3, calculated as (10 bonding - 3 antibonding)/2.
Correct Answer:
C
— 3
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Q. What is the bond order of the ion O2-?
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Solution
O2- has a bond order of 1, calculated as (10 bonding electrons - 7 antibonding electrons)/2 = 1.
Correct Answer:
B
— 2
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Q. What is the bond order of the molecule B2 according to molecular orbital theory?
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Solution
B2 has a bond order of 1, calculated as (2 bonding - 0 antibonding)/2.
Correct Answer:
B
— 1
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Q. What is the bond order of the molecule B2?
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Solution
B2 has a bond order of 1, calculated from its molecular orbital configuration.
Correct Answer:
A
— 1
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Q. What is the bond order of the molecule CO?
Show solution
Solution
CO has a bond order of 3, calculated as (10 bonding electrons - 2 antibonding electrons)/2 = 3.
Correct Answer:
C
— 3
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Q. What is the bond order of the molecule He2?
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Solution
He2 has a bond order of 0, as it has no net bonding electrons.
Correct Answer:
A
— 0
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Q. What is the bond order of the N2 molecule?
Show solution
Solution
N2 has a bond order of 3, calculated as (10 bonding - 0 antibonding)/2 = 3.
Correct Answer:
C
— 3
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Q. What is the bond order of the O2 molecule according to Molecular Orbital Theory?
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Solution
O2 has 12 total electrons, leading to a bond order of (10 bonding - 6 antibonding)/2 = 1.
Correct Answer:
B
— 2
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Q. What is the Brewster's angle for a medium with a refractive index of 1.5?
A.
30 degrees
B.
45 degrees
C.
60 degrees
D.
53 degrees
Show solution
Solution
Brewster's angle can be calculated using the formula tan(θ_B) = n, where n is the refractive index. For n = 1.5, θ_B = arctan(1.5) ≈ 53 degrees.
Correct Answer:
D
— 53 degrees
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Q. What is the Brewster's angle for light entering a medium with a refractive index of 1.5?
A.
30 degrees
B.
45 degrees
C.
60 degrees
D.
53 degrees
Show solution
Solution
Brewster's angle can be calculated using the formula tan(θ_B) = n, where n is the refractive index. For n = 1.5, θ_B = arctan(1.5) ≈ 53 degrees.
Correct Answer:
D
— 53 degrees
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Q. What is the Brewster's angle for light in air (n=1) reflecting off glass (n=1.5)?
A.
30 degrees
B.
45 degrees
C.
60 degrees
D.
53 degrees
Show solution
Solution
Brewster's angle can be calculated using the formula tan(θ_B) = n2/n1, which gives approximately 53 degrees.
Correct Answer:
D
— 53 degrees
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Q. What is the Brewster's angle for light traveling from air (n1 = 1) to glass (n2 = 1.5)?
A.
30 degrees
B.
45 degrees
C.
60 degrees
D.
53 degrees
Show solution
Solution
Brewster's angle θ_B can be calculated using θ_B = arctan(n2/n1) = arctan(1.5) ≈ 56.31 degrees.
Correct Answer:
D
— 53 degrees
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Q. What is the Brewster's angle?
A.
The angle at which light is completely absorbed
B.
The angle at which light is reflected with maximum polarization
C.
The angle at which light refracts without any reflection
D.
The angle at which light intensity is halved
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Solution
Brewster's angle is the angle of incidence at which light is reflected with maximum polarization.
Correct Answer:
B
— The angle at which light is reflected with maximum polarization
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Q. What is the bulk modulus of a material if a pressure increase of 1000 kPa causes a volume decrease of 0.01 m³ in a 1 m³ sample? (2022)
A.
10000 kPa
B.
1000 kPa
C.
100 kPa
D.
100 kPa
Show solution
Solution
Bulk modulus (K) = -ΔP / (ΔV/V) = 1000 kPa / (0.01 m³ / 1 m³) = 100000 kPa = 10000 kPa.
Correct Answer:
A
— 10000 kPa
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Q. What is the bulk modulus of a material if a pressure increase of 1000 kPa results in a volume decrease of 0.01 m³ for a volume of 1 m³? (2022)
A.
10000 kPa
B.
1000 kPa
C.
100 kPa
D.
100000 kPa
Show solution
Solution
Bulk modulus (K) = -ΔP / (ΔV/V) = 1000 kPa / (0.01 m³ / 1 m³) = 100000 kPa.
Correct Answer:
A
— 10000 kPa
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Q. What is the bulk modulus of a material if a pressure increase of 1000 kPa results in a volume decrease of 0.5%? (2022)
A.
200000 kPa
B.
500000 kPa
C.
1000000 kPa
D.
250000 kPa
Show solution
Solution
Bulk modulus (K) = -ΔP / (ΔV/V) = 1000 kPa / 0.005 = 200000 kPa.
Correct Answer:
B
— 500000 kPa
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Q. What is the bulk modulus of a material if a pressure increase of 50 MPa results in a volume decrease of 0.02 m³ for a volume of 1 m³? (2022)
A.
2500 MPa
B.
500 MPa
C.
1000 MPa
D.
2000 MPa
Show solution
Solution
Bulk modulus (K) = -ΔP / (ΔV/V) = 50 MPa / (0.02 m³ / 1 m³) = 2500 MPa.
Correct Answer:
A
— 2500 MPa
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Q. What is the bulk modulus of a material if a pressure increase of 50 MPa results in a volume decrease of 0.002 m³ for a volume of 1 m³? (2022)
A.
25 GPa
B.
50 GPa
C.
100 GPa
D.
200 GPa
Show solution
Solution
Bulk modulus (K) = -ΔP / (ΔV/V) = -50 MPa / (-0.002 m³ / 1 m³) = 25000 MPa = 25 GPa.
Correct Answer:
B
— 50 GPa
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Q. What is the bulk modulus of a material?
A.
Resistance to shear deformation
B.
Resistance to volume change
C.
Resistance to bending
D.
Resistance to tensile stress
Show solution
Solution
The bulk modulus measures a material's resistance to uniform compression, indicating how much it resists volume change.
Correct Answer:
B
— Resistance to volume change
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Q. What is the caloric value of one gram of fat?
A.
4 calories
B.
7 calories
C.
9 calories
D.
12 calories
Show solution
Solution
One gram of fat provides approximately 9 calories, making it the most energy-dense macronutrient.
Correct Answer:
C
— 9 calories
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Q. What is the capacitance of a capacitor if it stores 6μC of charge at a potential difference of 3V? (2022)
A.
2μF
B.
3μF
C.
4μF
D.
5μF
Show solution
Solution
Using the formula C = Q/V, we have C = 6μC / 3V = 2μF.
Correct Answer:
A
— 2μF
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Q. What is the capacitance of a capacitor that stores 10 µC of charge at a potential difference of 5 V?
A.
2 µF
B.
5 µF
C.
10 µF
D.
20 µF
Show solution
Solution
C = Q/V = 10 × 10^-6 C / 5 V = 2 × 10^-6 F = 2 µF.
Correct Answer:
A
— 2 µF
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Q. What is the capacitance of a parallel plate capacitor with an area of 0.01 m² and a separation of 0.001 m, filled with a dielectric of relative permittivity 5?
A.
5.5 × 10^-11 F
B.
5.5 × 10^-10 F
C.
5.5 × 10^-9 F
D.
5.5 × 10^-8 F
Show solution
Solution
C = ε₀ * ε_r * A / d = (8.85 × 10^-12 F/m) * 5 * (0.01 m²) / (0.001 m) = 4.425 × 10^-10 F.
Correct Answer:
B
— 5.5 × 10^-10 F
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Q. What is the capacitance of a parallel plate capacitor with area 0.1 m² and separation 0.01 m filled with air (ε₀ = 8.85 × 10^-12 F/m)?
A.
8.85 × 10^-12 F
B.
8.85 × 10^-10 F
C.
8.85 × 10^-9 F
D.
8.85 × 10^-8 F
Show solution
Solution
Capacitance C = ε₀ * A / d = (8.85 × 10^-12 F/m) * (0.1 m²) / (0.01 m) = 8.85 × 10^-10 F.
Correct Answer:
B
— 8.85 × 10^-10 F
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Q. What is the capacitance of a parallel plate capacitor with area A and separation d?
A.
ε₀ * A / d
B.
A / (ε₀ * d)
C.
d / (ε₀ * A)
D.
ε₀ * d / A
Show solution
Solution
The capacitance C of a parallel plate capacitor is given by the formula C = ε₀ * A / d, where ε₀ is the permittivity of free space.
Correct Answer:
A
— ε₀ * A / d
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Q. What is the capacitance of a parallel plate capacitor with plate area A and separation d?
A.
ε₀A/d
B.
d/ε₀A
C.
A/ε₀d
D.
ε₀d/A
Show solution
Solution
The capacitance C of a parallel plate capacitor is given by the formula C = ε₀A/d, where ε₀ is the permittivity of free space.
Correct Answer:
A
— ε₀A/d
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Q. What is the capacitance of a spherical capacitor with inner radius a and outer radius b? (2023)
A.
4πε₀ab/(b-a)
B.
4πε₀/(1/a - 1/b)
C.
4πε₀/(a+b)
D.
4πε₀/(b-a)
Show solution
Solution
The capacitance of a spherical capacitor is given by C = 4πε₀ab/(b-a).
Correct Answer:
A
— 4πε₀ab/(b-a)
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Q. What is the capacitive reactance of a capacitor of 10μF at a frequency of 60 Hz? (2016)
A.
265.26Ω
B.
159.15Ω
C.
100Ω
D.
50Ω
Show solution
Solution
Capacitive reactance Xc = 1 / (2πfC) = 1 / (2π * 60 * 10e-6) = 265.26Ω.
Correct Answer:
A
— 265.26Ω
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Q. What is the capacitive reactance of a capacitor with a capacitance of 10μF at a frequency of 50Hz? (2020)
A.
318.31 ohms
B.
159.15 ohms
C.
31.83 ohms
D.
15.92 ohms
Show solution
Solution
Xc = 1 / (2πfC) = 1 / (2π × 50 × 10 × 10^-6) = 318.31 ohms.
Correct Answer:
A
— 318.31 ohms
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Q. What is the capital city of Australia? (2021)
A.
Sydney
B.
Canberra
C.
Melbourne
D.
Brisbane
Show solution
Solution
The capital city of Australia is Canberra.
Correct Answer:
B
— Canberra
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Showing 19231 to 19260 of 31669 (1056 Pages)
Major Competitive Exams MCQ & Objective Questions
Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.
What You Will Practise Here
Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams
Exam Relevance
The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.
Common Mistakes Students Make
Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam
FAQs
Question: How can I improve my performance in Major Competitive Exams?Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Question: What types of questions should I focus on for these exams?Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.
Question: Are there specific strategies for tackling objective questions?Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.
Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!
