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 a property of halogens?
A.
Good conductors of electricity
B.
Diatomic molecules
C.
High melting points
D.
All are gases at room temperature
Show solution
Solution
Halogens exist as diatomic molecules (e.g., Cl2, F2) in their elemental form.
Correct Answer:
B
— Diatomic molecules
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Q. Which of the following is a property of halogens? (2021) 2021
A.
They are all metals
B.
They have low electronegativity
C.
They form diatomic molecules
D.
They are colorless gases
Show solution
Solution
Halogens exist as diatomic molecules (e.g., Cl2, F2).
Correct Answer:
C
— They form diatomic molecules
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Q. Which of the following is a property of heavy water (D2O)?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
Show solution
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer:
B
— It has a higher boiling point than regular water
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Q. Which of the following is a property of heavy water?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
Show solution
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer:
B
— It has a higher boiling point than regular water
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Q. Which of the following is a property of hydrogen chloride (HCl)?
A.
It is a gas at room temperature
B.
It is a strong base
C.
It is insoluble in water
D.
It has a high boiling point
Show solution
Solution
Hydrogen chloride (HCl) is a gas at room temperature and is highly soluble in water.
Correct Answer:
A
— It is a gas at room temperature
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Q. Which of the following is a property of hydrogen chloride gas?
A.
It is a strong base
B.
It is a colorless gas
C.
It is insoluble in water
D.
It is a non-polar molecule
Show solution
Solution
Hydrogen chloride (HCl) is a colorless gas that is soluble in water.
Correct Answer:
B
— It is a colorless gas
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Q. Which of the following is a property of hydrogen gas?
A.
It is a good conductor of electricity
B.
It is colorless and odorless
C.
It is denser than air
D.
It supports combustion
Show solution
Solution
Hydrogen gas is colorless and odorless.
Correct Answer:
B
— It is colorless and odorless
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Q. Which of the following is a property of hydrogen?
A.
It is a metal
B.
It is a non-metal
C.
It is a noble gas
D.
It is a liquid at room temperature
Show solution
Solution
Hydrogen is classified as a non-metal.
Correct Answer:
B
— It is a non-metal
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Q. Which of the following is a property of intrinsic semiconductors? (2023)
A.
Doped with impurities
B.
High conductivity
C.
Pure form
D.
Low melting point
Show solution
Solution
Intrinsic semiconductors are in their pure form without any doping.
Correct Answer:
C
— Pure form
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Q. Which of the following is a property of ionic compounds?
A.
They have low melting points.
B.
They conduct electricity in solid state.
C.
They are soluble in water.
D.
They are malleable.
Show solution
Solution
Ionic compounds are generally soluble in water due to the strong interactions between ions and water molecules.
Correct Answer:
C
— They are soluble in water.
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Q. Which of the following is a property of ketones? (2020)
A.
More reactive than aldehydes
B.
Less polar than aldehydes
C.
Higher boiling points than aldehydes
D.
None of the above
Show solution
Solution
Ketones are generally less polar than aldehydes due to the absence of a hydrogen atom attached to the carbonyl carbon.
Correct Answer:
B
— Less polar than aldehydes
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Q. Which of the following is a property of lanthanide contraction?
A.
Increase in atomic size
B.
Decrease in ionization energy
C.
Increase in electronegativity
D.
Decrease in atomic radius
Show solution
Solution
Lanthanide contraction refers to the decrease in atomic radius across the lanthanide series due to poor shielding of f-electrons.
Correct Answer:
D
— Decrease in atomic radius
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Q. Which of the following is a property of lanthanides?
A.
High density
B.
Low melting point
C.
Non-magnetic
D.
Colorless
Show solution
Solution
Lanthanides are known for their high density and are typically metallic in nature.
Correct Answer:
A
— High density
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Q. Which of the following is a property of metals?
A.
Brittle
B.
Good conductors of heat
C.
Poor conductors of electricity
D.
Dull appearance
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Solution
Metals are typically good conductors of heat and electricity and have a shiny appearance.
Correct Answer:
B
— Good conductors of heat
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Q. Which of the following is a property of noble gases?
A.
Highly reactive
B.
Colorless and odorless
C.
Form strong acids
D.
Good conductors of electricity
Show solution
Solution
Noble gases are colorless and odorless under standard conditions.
Correct Answer:
B
— Colorless and odorless
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Q. Which of the following is a property of non-metals?
A.
Good conductors of heat
B.
Malleable
C.
Brittle
D.
Ductile
Show solution
Solution
Non-metals are generally brittle in solid form and do not exhibit malleability or ductility.
Correct Answer:
C
— Brittle
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Q. Which of the following is a property of p-block metals?
A.
High density
B.
Low melting point
C.
Good electrical conductivity
D.
Brittle
Show solution
Solution
P-block metals, such as Lead and Tin, are generally brittle.
Correct Answer:
D
— Brittle
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Q. Which of the following is a property of similar triangles?
A.
Their corresponding angles are equal.
B.
Their corresponding sides are equal.
C.
They have the same area.
D.
They are congruent.
Show solution
Solution
Similar triangles have equal corresponding angles, but their sides are in proportion, not necessarily equal.
Correct Answer:
A
— Their corresponding angles are equal.
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Q. Which of the following is a property of the p-block element carbon?
A.
Good conductor of electricity
B.
Forms strong ionic bonds
C.
Can form multiple bonds
D.
High density
Show solution
Solution
Carbon can form multiple bonds, such as double and triple bonds, due to its tetravalency.
Correct Answer:
C
— Can form multiple bonds
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Q. Which of the following is a property of transition metals?
A.
They have completely filled d-orbitals
B.
They form only ionic compounds
C.
They exhibit variable oxidation states
D.
They are all paramagnetic
Show solution
Solution
Transition metals exhibit variable oxidation states due to the involvement of d-electrons in bonding.
Correct Answer:
C
— They exhibit variable oxidation states
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Q. Which of the following is a purely imaginary number?
A.
2 + 3i
B.
0
C.
4
D.
0 + 5i
Show solution
Solution
A purely imaginary number has no real part, so 0 + 5i is purely imaginary.
Correct Answer:
D
— 0 + 5i
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Q. Which of the following is a purine? (2019)
A.
Cytosine
B.
Thymine
C.
Adenine
D.
Uracil
Show solution
Solution
Adenine is a purine, which is one of the two types of nitrogenous bases in nucleic acids.
Correct Answer:
C
— Adenine
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Q. Which of the following is a quadratic equation?
A.
x + 1 = 0
B.
x^2 - 4x + 4 = 0
C.
2x - 3 = 0
D.
3x + 2 = 0
Show solution
Solution
A quadratic equation is one that can be expressed in the form ax^2 + bx + c = 0, which is satisfied by x^2 - 4x + 4 = 0.
Correct Answer:
B
— x^2 - 4x + 4 = 0
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Q. Which of the following is a real-time operating system?
A.
Windows 10
B.
Linux
C.
RTOS
D.
macOS
Show solution
Solution
RTOS stands for Real-Time Operating System.
Correct Answer:
C
— RTOS
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Q. Which of the following is a redox reaction? (2019)
A.
2H2 + O2 → 2H2O
B.
NaCl → Na + Cl2
C.
H2 + Cl2 → 2HCl
D.
CaCO3 → CaO + CO2
Show solution
Solution
In the reaction 2H2 + O2 → 2H2O, hydrogen is oxidized and oxygen is reduced, making it a redox reaction.
Correct Answer:
A
— 2H2 + O2 → 2H2O
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Q. Which of the following is a reducing agent for aldehydes?
A.
H2
B.
KMnO4
C.
Na2Cr2O7
D.
HCl
Show solution
Solution
Hydrogen gas (H2) can act as a reducing agent for aldehydes, converting them to alcohols.
Correct Answer:
A
— H2
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Q. Which of the following is a reducing agent in the reaction 2CuO + C → 2Cu + CO2?
Show solution
Solution
C is the reducing agent as it donates electrons to reduce CuO to Cu.
Correct Answer:
B
— C
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Q. Which of the following is a reducing agent in the reaction 2MnO4- + 5C2O4^2- + 16H+ → 2Mn^2+ + 10CO2 + 8H2O? (2020)
A.
MnO4-
B.
C2O4^2-
C.
H+
D.
CO2
Show solution
Solution
C2O4^2- (oxalate ion) is oxidized to CO2, thus it acts as a reducing agent in this reaction.
Correct Answer:
B
— C2O4^2-
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Q. Which of the following is a reducing agent that can reduce ketones?
A.
H2/Pd
B.
KMnO4
C.
Na2Cr2O7
D.
AgNO3
Show solution
Solution
H2 in the presence of palladium (Pd) is a reducing agent that can reduce ketones to alcohols.
Correct Answer:
A
— H2/Pd
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Q. Which of the following is a reducing sugar?
A.
Fructose
B.
Sucrose
C.
Starch
D.
Cellulose
Show solution
Solution
Fructose is a reducing sugar, while sucrose, starch, and cellulose are not.
Correct Answer:
A
— Fructose
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