Q. What fraction of the total sales does Product C represent in the pie chart?
A.
1/4
B.
1/3
C.
1/2
D.
1/5
Show solution
Solution
Product C represents 1/3 of the total sales in the pie chart.
Correct Answer:
B
— 1/3
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Q. What fraction of the total sales does Product D represent in the pie chart?
A.
1/4
B.
1/3
C.
1/2
D.
1/5
Show solution
Solution
Product D represents 1/4 of the total sales as shown in the pie chart.
Correct Answer:
A
— 1/4
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Q. What happens during telophase of mitosis? (2019)
A.
Chromosomes condense
B.
Nuclear envelope re-forms
C.
Spindle fibers disappear
D.
Both B and C
Show solution
Solution
During telophase, the nuclear envelope re-forms around the separated chromosomes, and spindle fibers disappear.
Correct Answer:
D
— Both B and C
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Q. What happens to a paper with a circular cut-out when it is folded in half? (2021)
A.
Circle
B.
Ellipse
C.
Two circles
D.
No shape
Show solution
Solution
Folding the paper will create two halves of the circular cut-out.
Correct Answer:
C
— Two circles
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Q. What happens to the acceleration of an object if the net force acting on it is doubled while its mass remains constant?
A.
It doubles
B.
It halves
C.
It remains the same
D.
It quadruples
Show solution
Solution
According to F = ma, if the force is doubled, the acceleration also doubles.
Correct Answer:
A
— It doubles
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Q. What happens to the average kinetic energy of gas molecules if the temperature is increased?
A.
It decreases.
B.
It remains constant.
C.
It increases.
D.
It becomes zero.
Show solution
Solution
The average kinetic energy of gas molecules is directly proportional to the absolute temperature. Therefore, increasing the temperature increases the average kinetic energy.
Correct Answer:
C
— It increases.
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Q. What happens to the average speed of gas molecules if the temperature is increased?
A.
It decreases
B.
It remains constant
C.
It increases
D.
It becomes zero
Show solution
Solution
As the temperature of a gas increases, the average speed of gas molecules also increases due to the increase in kinetic energy.
Correct Answer:
C
— It increases
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Q. What happens to the balancing length if the emf of the cell is increased while keeping the potentiometer wire constant?
A.
Balancing length increases
B.
Balancing length decreases
C.
No change in balancing length
D.
Balancing length becomes zero
Show solution
Solution
Increasing the emf of the cell increases the balancing length, as it requires a longer length to balance the higher voltage.
Correct Answer:
A
— Balancing length increases
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Q. What happens to the boiling point of a liquid when the atmospheric pressure decreases?
A.
It increases.
B.
It decreases.
C.
It remains the same.
D.
It becomes unpredictable.
Show solution
Solution
The boiling point of a liquid decreases with a decrease in atmospheric pressure.
Correct Answer:
B
— It decreases.
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Q. What happens to the boiling point of a solvent when a non-volatile solute is added?
A.
It decreases
B.
It remains the same
C.
It increases
D.
It becomes zero
Show solution
Solution
The boiling point of a solvent increases when a non-volatile solute is added due to boiling point elevation.
Correct Answer:
C
— It increases
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Q. What happens to the buoyant force when the density of the fluid increases? (2022)
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
The buoyant force increases with the density of the fluid, as it is directly proportional to the fluid's density.
Correct Answer:
B
— It increases
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Q. What happens to the capacitance of a capacitor if a dielectric material is inserted between its plates? (2022)
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
Inserting a dielectric material increases the capacitance of the capacitor by a factor equal to the dielectric constant of the material.
Correct Answer:
B
— It increases
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Q. What happens to the capacitance of a capacitor if a dielectric material is inserted? (2021)
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
Inserting a dielectric material between the plates of a capacitor increases its capacitance due to the material's ability to reduce the electric field.
Correct Answer:
A
— It increases
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Q. What happens to the capacitance of a capacitor if a dielectric material is introduced between its plates? (2021)
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
The capacitance increases when a dielectric material is introduced, as it reduces the electric field between the plates.
Correct Answer:
A
— Increases
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Q. What happens to the capacitance of a capacitor if the dielectric constant is doubled?
A.
It doubles
B.
It halves
C.
It remains the same
D.
It quadruples
Show solution
Solution
The capacitance C of a capacitor is directly proportional to the dielectric constant k. If k is doubled, C also doubles.
Correct Answer:
A
— It doubles
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Q. What happens to the capacitance of a parallel plate capacitor if the distance between the plates is halved?
A.
It doubles
B.
It halves
C.
It quadruples
D.
It remains the same
Show solution
Solution
Capacitance, C = ε₀ * A / d. If d is halved, C doubles.
Correct Answer:
A
— It doubles
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Q. What happens to the capacitance of a parallel plate capacitor if the distance between the plates is doubled?
A.
It doubles
B.
It halves
C.
It remains the same
D.
It quadruples
Show solution
Solution
Capacitance C = ε₀A/d; if d is doubled, C is halved.
Correct Answer:
B
— It halves
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Q. What happens to the capacitance of a parallel plate capacitor if the distance between the plates is increased? (2020)
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
The capacitance (C) of a parallel plate capacitor is inversely proportional to the distance (d) between the plates. If d increases, C decreases.
Correct Answer:
B
— It decreases
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Q. What happens to the compass needle when you move towards the North Pole? (2019)
A.
It points straight down
B.
It points straight up
C.
It spins randomly
D.
It points towards the South
Show solution
Solution
As you approach the North Pole, the compass needle starts to point downwards due to the magnetic field lines converging.
Correct Answer:
A
— It points straight down
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Q. What happens to the conductivity of a semiconductor as temperature increases?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
The conductivity of a semiconductor increases with temperature due to the increased thermal energy that frees more charge carriers.
Correct Answer:
A
— Increases
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Q. What happens to the current in a circuit if the resistance is increased while the voltage remains constant?
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
According to Ohm's Law, if resistance increases while voltage remains constant, the current decreases.
Correct Answer:
B
— It decreases
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Q. What happens to the current in a circuit if the voltage is increased while keeping the resistance constant? (2023)
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
According to Ohm's Law, if the voltage increases while resistance remains constant, the current will also increase.
Correct Answer:
B
— It increases
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Q. What happens to the current in a circuit if the voltage is increased while the resistance remains constant? (2021)
A.
The current decreases
B.
The current increases
C.
The current remains the same
D.
The current becomes zero
Show solution
Solution
According to Ohm's Law, if the voltage (V) increases while resistance (R) remains constant, the current (I) will increase.
Correct Answer:
B
— The current increases
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Q. What happens to the current in a circuit if the voltage is tripled and the resistance remains constant?
A.
It triples
B.
It doubles
C.
It halves
D.
It remains the same
Show solution
Solution
According to Ohm's Law, if voltage (V) is tripled and resistance (R) remains constant, the current (I) will also triple: I = V / R.
Correct Answer:
A
— It triples
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Q. What happens to the current in a circuit if the voltage is tripled while the resistance remains constant? (2023)
A.
It triples.
B.
It halves.
C.
It remains the same.
D.
It increases by a factor of nine.
Show solution
Solution
According to Ohm's Law, if the voltage (V) is tripled and resistance (R) remains constant, the current (I) will also triple (I = V/R).
Correct Answer:
A
— It triples.
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Q. What happens to the current in a parallel circuit if one branch is removed? (2019)
A.
Current increases
B.
Current decreases
C.
Current remains the same
D.
Current stops
Show solution
Solution
In a parallel circuit, removing one branch does not affect the current in the other branches.
Correct Answer:
C
— Current remains the same
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Q. What happens to the current in a series circuit if one of the components fails? (2019)
A.
Current increases
B.
Current decreases
C.
Current stops
D.
Current remains the same
Show solution
Solution
In a series circuit, if one component fails, the current stops flowing through the entire circuit.
Correct Answer:
C
— Current stops
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Q. What happens to the current in the galvanometer when the Wheatstone bridge is balanced?
A.
Increases
B.
Decreases
C.
Becomes zero
D.
Fluctuates
Show solution
Solution
When the Wheatstone bridge is balanced, the current in the galvanometer becomes zero.
Correct Answer:
C
— Becomes zero
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Q. What happens to the current through the galvanometer when the bridge is balanced?
A.
It increases.
B.
It decreases.
C.
It becomes zero.
D.
It becomes maximum.
Show solution
Solution
When the bridge is balanced, the current through the galvanometer becomes zero.
Correct Answer:
C
— It becomes zero.
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Q. What happens to the current through the galvanometer when the Wheatstone bridge is balanced?
A.
It increases
B.
It decreases
C.
It becomes zero
D.
It becomes infinite
Show solution
Solution
When the Wheatstone bridge is balanced, the potential difference across the galvanometer is zero, resulting in zero current through it.
Correct Answer:
C
— It becomes zero
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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!
