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. Which of the following is the longest river in the world? (2019)
A.
Amazon River
B.
Nile River
C.
Yangtze River
D.
Mississippi River
Show solution
Solution
The Nile River is traditionally considered the longest river in the world, measuring about 6,650 kilometers.
Correct Answer:
B
— Nile River
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Q. Which of the following is the main component of plasma? (2022)
A.
Water
B.
Proteins
C.
Electrolytes
D.
Nutrients
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Solution
Plasma is composed of approximately 90% water, with proteins, electrolytes, and nutrients making up the remaining 10%.
Correct Answer:
A
— Water
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Q. Which of the following is the molecular formula for butane?
A.
C3H8
B.
C4H10
C.
C5H12
D.
C6H14
Show solution
Solution
Butane has the molecular formula C4H10.
Correct Answer:
B
— C4H10
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Q. Which of the following is the most abundant alkaline earth metal in the Earth's crust? (2019)
A.
Beryllium
B.
Calcium
C.
Magnesium
D.
Strontium
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Solution
Calcium (Ca) is the most abundant alkaline earth metal in the Earth's crust.
Correct Answer:
B
— Calcium
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Q. Which of the following is the most abundant element in the universe? (2020)
A.
Oxygen
B.
Hydrogen
C.
Carbon
D.
Helium
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Solution
Hydrogen is the most abundant element in the universe, making up about 75% of its elemental mass.
Correct Answer:
B
— Hydrogen
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Q. Which of the following is the most abundant isotope of hydrogen? (2023)
A.
Protium
B.
Deuterium
C.
Tritium
D.
Hydrogen-3
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Solution
Protium, which has no neutrons, is the most abundant isotope of hydrogen, making up about 99.98% of hydrogen found in nature.
Correct Answer:
A
— Protium
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Q. Which of the following is the most acidic among the following oxides? (2019)
A.
SO2
B.
P2O5
C.
CO2
D.
N2O5
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Solution
P2O5 is the most acidic oxide among the given options, as it forms phosphoric acid in water.
Correct Answer:
B
— P2O5
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Q. Which of the following is the most acidic oxide? (2022)
A.
P2O5
B.
SO2
C.
CO2
D.
SiO2
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Solution
P2O5 (phosphorus pentoxide) is the most acidic oxide among the given options.
Correct Answer:
A
— P2O5
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Q. Which of the following is the most electronegative element in the p-block?
A.
Fluorine
B.
Chlorine
C.
Oxygen
D.
Nitrogen
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Solution
Fluorine is the most electronegative element in the p-block.
Correct Answer:
A
— Fluorine
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Q. Which of the following is the most electronegative element? (2023)
A.
Fluorine
B.
Oxygen
C.
Nitrogen
D.
Chlorine
Show solution
Solution
Fluorine is the most electronegative element in the periodic table.
Correct Answer:
A
— Fluorine
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Q. Which of the following is the most electropositive element? (2021)
A.
Lithium
B.
Sodium
C.
Potassium
D.
Rubidium
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Solution
Rubidium (Rb) is the most electropositive element among the given options.
Correct Answer:
D
— Rubidium
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Q. Which of the following is the most reactive alkali metal? (2019)
A.
Lithium
B.
Sodium
C.
Potassium
D.
Rubidium
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Solution
Potassium (K) is more reactive than Sodium (Na) and Lithium (Li) due to its larger atomic size and lower ionization energy.
Correct Answer:
C
— Potassium
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Q. Which of the following is the most stable oxidation state of lead? (2019)
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Solution
Lead commonly exhibits a +4 oxidation state, although +2 is also stable, +4 is more stable in many compounds.
Correct Answer:
B
— +4
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Q. Which of the following is the most stable oxidation state of nitrogen? (2019)
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Solution
The most stable oxidation state of nitrogen is +5, as seen in compounds like nitric acid.
Correct Answer:
D
— +5
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Q. Which of the following is the next number in the sequence: 2, 4, 8, 16, ...?
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Solution
The sequence is a geometric progression where each term is multiplied by 2. The next number is 16 * 2 = 32.
Correct Answer:
C
— 32
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Q. Which of the following is the next number in the series: 1, 1, 2, 3, 5, 8, ? (2020)
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Solution
The series is the Fibonacci sequence where each number is the sum of the two preceding ones. Thus, 5 + 8 = 13.
Correct Answer:
B
— 11
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Q. Which of the following is the odd one out in the context of historical events? (2023)
A.
World War I
B.
World War II
C.
The Great Depression
D.
The Renaissance
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Solution
The Renaissance was a cultural movement, while the others are significant historical events related to conflict and economic turmoil.
Correct Answer:
D
— The Renaissance
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Q. Which of the following is the odd one out: 3, 6, 9, 12, 15?
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Solution
All numbers except 12 are odd multiples of 3. 12 is even.
Correct Answer:
D
— 12
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Q. Which of the following is the odd one out? (2021)
A.
Copper
B.
Aluminum
C.
Iron
D.
Plastic
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Solution
Plastic is a polymer, while the others are metals.
Correct Answer:
D
— Plastic
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Q. Which of the following is the outermost layer of the Earth? (2022)
A.
Mantle
B.
Crust
C.
Outer Core
D.
Inner Core
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Solution
The Crust is the outermost layer of the Earth, lying above the mantle.
Correct Answer:
B
— Crust
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Q. Which of the following is the output of the expression NOT (A AND B) when A = 1 and B = 1?
A.
0
B.
1
C.
2
D.
Undefined
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Solution
First, evaluate A AND B which is 1 AND 1 = 1. Then NOT 1 = 0.
Correct Answer:
A
— 0
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Q. Which of the following is the oxidizing agent in the reaction: 2MnO4⁻ + 5C2O4²⁻ + 6H⁺ → 2Mn²⁺ + 10CO2 + 3H2O? (2022)
A.
MnO4⁻
B.
C2O4²⁻
C.
H⁺
D.
CO2
Show solution
Solution
In this reaction, MnO4⁻ is reduced to Mn²⁺, thus it acts as the oxidizing agent.
Correct Answer:
A
— MnO4⁻
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Q. Which of the following is the primary cause of the greenhouse effect?
A.
Deforestation
B.
Industrial emissions
C.
Agricultural practices
D.
All of the above
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Solution
The greenhouse effect is primarily caused by a combination of deforestation, industrial emissions, and agricultural practices that increase greenhouse gases in the atmosphere.
Correct Answer:
D
— All of the above
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Q. Which of the following is the primary muscle responsible for the flexion of the elbow joint? (2021)
A.
Biceps brachii
B.
Triceps brachii
C.
Brachialis
D.
Deltoid
Show solution
Solution
The biceps brachii is the primary muscle responsible for flexing the elbow joint.
Correct Answer:
A
— Biceps brachii
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Q. Which of the following is the primary muscle responsible for the movement of the arm at the shoulder joint? (2021)
A.
Biceps Brachii
B.
Triceps Brachii
C.
Deltoid
D.
Pectoralis Major
Show solution
Solution
The deltoid muscle is the primary muscle responsible for the abduction of the arm at the shoulder joint.
Correct Answer:
C
— Deltoid
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Q. Which of the following is the range of the function f(x) = x^2 - 4?
A.
(-∞, -4]
B.
[-4, ∞)
C.
(-4, ∞)
D.
[0, ∞)
Show solution
Solution
The minimum value of f(x) is -4 when x=0, so the range is [-4, ∞).
Correct Answer:
B
— [-4, ∞)
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Q. Which of the following is the range of the function f(x) = x^2?
A.
All real numbers
B.
All positive real numbers
C.
All non-negative real numbers
D.
All integers
Show solution
Solution
The function f(x) = x^2 is non-negative for all real x, hence the range is all non-negative real numbers.
Correct Answer:
C
— All non-negative real numbers
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Q. Which of the following is the range of the function f(x) = |x - 1|?
A.
(-∞, 1)
B.
[0, ∞)
C.
(-1, 1)
D.
[1, ∞)
Show solution
Solution
The minimum value of |x - 1| is 0 when x = 1, so the range is [0, ∞).
Correct Answer:
B
— [0, ∞)
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Q. Which of the following is the result of (2^3)^2?
A.
2^5
B.
2^6
C.
2^7
D.
2^8
Show solution
Solution
Using the power of a power property, (a^m)^n = a^(m*n), we get (2^3)^2 = 2^(3*2) = 2^6.
Correct Answer:
B
— 2^6
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Q. Which of the following is the result of (x^2y^3)^2?
A.
x^4y^6
B.
x^2y^3
C.
x^2y^6
D.
x^4y^3
Show solution
Solution
Using the power of a power property, we multiply the exponents: (x^2)^2 = x^4 and (y^3)^2 = y^6.
Correct Answer:
A
— x^4y^6
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