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!
Q. What is the phenomenon called when electrons are emitted from a metal surface when it is exposed to light?
A.
Photoelectric effect
B.
Compton effect
C.
Rayleigh scattering
D.
Black body radiation
Show solution
Solution
The emission of electrons from a metal surface when exposed to light is known as the photoelectric effect.
Correct Answer:
A
— Photoelectric effect
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Q. What is the phenomenon called when light bends as it passes from one medium to another? (2020)
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Dispersion
Show solution
Solution
Refraction is the bending of light as it passes from one medium to another due to a change in its speed.
Correct Answer:
B
— Refraction
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Q. What is the phenomenon called when light waves are restricted to vibrate in a single plane?
A.
Refraction
B.
Diffraction
C.
Polarization
D.
Interference
Show solution
Solution
The phenomenon of light waves being restricted to vibrate in a single plane is called polarization.
Correct Answer:
C
— Polarization
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Q. What is the phenomenon called when light waves bend around the edges of an obstacle?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Interference
Show solution
Solution
The bending of light waves around the edges of an obstacle is known as diffraction.
Correct Answer:
C
— Diffraction
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Q. What is the phenomenon called when one gene affects the expression of another gene? (2022)
A.
Epistasis
B.
Pleiotropy
C.
Codominance
D.
Incomplete dominance
Show solution
Solution
The phenomenon where one gene affects the expression of another gene is called epistasis.
Correct Answer:
A
— Epistasis
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Q. What is the phenomenon called when sound waves bend around obstacles?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Interference
Show solution
Solution
The bending of sound waves around obstacles is known as diffraction.
Correct Answer:
C
— Diffraction
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Q. What is the phenomenon called when sound waves bounce off a surface? (2021)
A.
Refraction
B.
Reflection
C.
Diffraction
D.
Interference
Show solution
Solution
The bouncing back of sound waves from a surface is called reflection.
Correct Answer:
B
— Reflection
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Q. What is the phenomenon of bending of light called? (2023)
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Dispersion
Show solution
Solution
The bending of light as it passes from one medium to another is called refraction.
Correct Answer:
B
— Refraction
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Q. What is the phenomenon of bending of light when it passes from one medium to another called? (2015)
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Dispersion
Show solution
Solution
The bending of light when it passes from one medium to another is called refraction.
Correct Answer:
B
— Refraction
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Q. What is the phenomenon of diffraction primarily associated with?
A.
Reflection of light
B.
Bending of waves around obstacles
C.
Interference of waves
D.
Polarization of light
Show solution
Solution
Diffraction is the bending of waves around obstacles and the spreading of waves when they pass through small openings.
Correct Answer:
B
— Bending of waves around obstacles
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Q. What is the phenomenon of diffraction primarily responsible for?
A.
Bending of light around obstacles
B.
Reflection of light
C.
Refraction of light
D.
Polarization of light
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Solution
Diffraction is the bending of waves around obstacles and the spreading of waves when they pass through small openings.
Correct Answer:
A
— Bending of light around obstacles
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Q. What is the phenomenon of electromagnetic induction?
A.
The generation of electric current by a changing magnetic field
B.
The generation of magnetic field by a changing electric current
C.
The interaction between electric and magnetic fields
D.
The conversion of mechanical energy into electrical energy
Show solution
Solution
Electromagnetic induction refers to the generation of electric current in a conductor due to a changing magnetic field.
Correct Answer:
A
— The generation of electric current by a changing magnetic field
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Q. What is the phenomenon of polarization in light?
A.
The splitting of light into different colors
B.
The alignment of light waves in a particular direction
C.
The reflection of light off a surface
D.
The bending of light as it passes through a medium
Show solution
Solution
Polarization refers to the orientation of the oscillations of light waves in a particular direction.
Correct Answer:
B
— The alignment of light waves in a particular direction
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Q. What is the photoelectric effect primarily used for in technology?
A.
Solar panels
B.
LEDs
C.
Lasers
D.
Television screens
Show solution
Solution
The photoelectric effect is primarily used in solar panels to convert light energy into electrical energy.
Correct Answer:
A
— Solar panels
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Q. What is the photoelectric effect?
A.
Emission of electrons from a metal surface when light shines on it
B.
Absorption of light by a metal surface
C.
Reflection of light from a metal surface
D.
Transmission of light through a metal surface
Show solution
Solution
The photoelectric effect is the phenomenon where electrons are emitted from a metal surface when it is exposed to light of sufficient frequency.
Correct Answer:
A
— Emission of electrons from a metal surface when light shines on it
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Q. What is the pKa of acetic acid?
A.
4.76
B.
5.76
C.
3.76
D.
6.76
Show solution
Solution
The pKa of acetic acid is approximately 4.76.
Correct Answer:
A
— 4.76
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Q. What is the pKa range of most carboxylic acids?
A.
0-1
B.
4-5
C.
8-9
D.
10-11
Show solution
Solution
Most carboxylic acids have a pKa range of about 4-5.
Correct Answer:
B
— 4-5
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Q. What is the pKa value of acetic acid?
A.
4.76
B.
7.00
C.
9.25
D.
2.00
Show solution
Solution
The pKa value of acetic acid is approximately 4.76.
Correct Answer:
A
— 4.76
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Q. What is the pKb value of a strong base?
A.
Less than 0
B.
Equal to 0
C.
Greater than 0
D.
Equal to 14
Show solution
Solution
A strong base has a pKb value less than 0, indicating high basicity.
Correct Answer:
A
— Less than 0
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Q. What is the pKb value of a weak base like aniline? (2020)
A.
Less than 5
B.
Around 9
C.
Around 14
D.
Greater than 15
Show solution
Solution
Aniline has a pKb value around 9, indicating it is a weak base.
Correct Answer:
B
— Around 9
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Q. What is the pKb value of a weak base like methylamine?
A.
Less than 7
B.
Equal to 7
C.
Greater than 7
D.
Undefined
Show solution
Solution
Methylamine is a weak base, so its pKb value is less than 7.
Correct Answer:
A
— Less than 7
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Q. What is the pKb value of a weak base?
A.
Less than 7
B.
Equal to 7
C.
Greater than 7
D.
None of the above
Show solution
Solution
A weak base has a pKb value greater than 7.
Correct Answer:
C
— Greater than 7
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Q. What is the plural form of 'cactus'?
A.
Cactuses
B.
Cacti
C.
Cactii
D.
Cactuses
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Solution
'Cacti' is the correct plural form of 'cactus'.
Correct Answer:
B
— Cacti
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Q. What is the plural form of 'child'? (2022)
A.
Childs
B.
Children
C.
Childes
D.
Childer
Show solution
Solution
The plural form of 'child' is 'children'.
Correct Answer:
B
— Children
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Q. What is the point of inflection for the function f(x) = x^3 - 6x^2 + 9x? (2023) 2023
A.
(1, 4)
B.
(2, 3)
C.
(3, 0)
D.
(0, 0)
Show solution
Solution
To find inflection points, set f''(x) = 0. f''(x) = 6x - 12 = 0, x = 2. f(2) = 4.
Correct Answer:
A
— (1, 4)
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Q. What is the point of intersection of the lines x + 2y = 5 and 2x - y = 1?
A.
(1, 2)
B.
(2, 1)
C.
(3, 0)
D.
(0, 5)
Show solution
Solution
Solving the equations simultaneously, we find the intersection point is (1, 2).
Correct Answer:
A
— (1, 2)
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Q. What is the point of intersection of the lines x + y = 5 and 2x - y = 1?
A.
(2, 3)
B.
(3, 2)
C.
(1, 4)
D.
(4, 1)
Show solution
Solution
Solving the equations simultaneously, we find x = 2 and y = 3. Thus, the point of intersection is (2, 3).
Correct Answer:
A
— (2, 3)
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Q. What is the point of intersection of the lines y = 2x + 1 and y = -x + 4?
A.
(1, 3)
B.
(2, 5)
C.
(3, 7)
D.
(0, 1)
Show solution
Solution
Setting 2x + 1 = -x + 4 gives 3x = 3, thus x = 1. Substituting back, y = 2(1) + 1 = 3. The intersection is (1, 3).
Correct Answer:
A
— (1, 3)
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Q. What is the point of intersection of the lines y = 3x + 1 and y = -x + 5?
A.
(1, 4)
B.
(2, 7)
C.
(3, 10)
D.
(4, 13)
Show solution
Solution
Setting 3x + 1 = -x + 5 gives 4x = 4, thus x = 1. Substituting x back gives y = 4. The intersection point is (1, 4).
Correct Answer:
A
— (1, 4)
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Q. What is the Poisson's ratio for a material if a longitudinal strain of 0.005 results in a lateral strain of 0.002? (2019)
A.
0.4
B.
0.5
C.
0.2
D.
0.1
Show solution
Solution
Poisson's ratio (ν) = Lateral strain / Longitudinal strain = 0.002 / 0.005 = 0.4.
Correct Answer:
A
— 0.4
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