Major Competitive Exams

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Major Competitive Exams

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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!

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Q. Which of the following is a characteristic of radioactive decay? (2019)

A. It is a random process
B. It occurs at a constant rate
C. It can be accelerated by external factors
D. It produces energy only

Solution

Radioactive decay is a random process, meaning that it cannot be predicted when a particular nucleus will decay.

Correct Answer: A — It is a random process

Q. Which of the following is a characteristic of s-block elements?

A. They have high ionization energies
B. They form covalent bonds
C. They are good conductors of electricity
D. They have low electronegativity

Solution

S-block elements have low electronegativity.

Correct Answer: D — They have low electronegativity

Q. Which of the following is a characteristic of saturated hydrocarbons?

A. They contain double bonds
B. They contain triple bonds
C. They are less stable than unsaturated hydrocarbons
D. They contain only single bonds

Solution

Saturated hydrocarbons contain only single bonds between carbon atoms.

Correct Answer: D — They contain only single bonds

Q. Which of the following is a characteristic of sexual reproduction in plants? (2019)

A. Produces genetically identical offspring
B. Involves gamete formation
C. Occurs only in flowering plants
D. Is faster than asexual reproduction

Solution

Sexual reproduction in plants involves the formation of gametes (male and female) and results in genetically diverse offspring.

Correct Answer: B — Involves gamete formation

Q. Which of the following is a characteristic of sexual reproduction? (2022)

A. Produces identical offspring
B. Involves two parents
C. Occurs in all organisms
D. Faster than asexual reproduction

Solution

Sexual reproduction typically involves two parents and results in offspring that are genetically diverse.

Correct Answer: B — Involves two parents

Q. Which of the following is a characteristic of solids?

A. They can flow
B. They have a definite shape
C. They are compressible
D. They have high kinetic energy

Solution

Solids have a definite shape and are not compressible; they do not flow like liquids or gases.

Correct Answer: B — They have a definite shape

Q. Which of the following is a characteristic of sound waves? (2023)

A. Transverse waves
B. Longitudinal waves
C. Electromagnetic waves
D. Static waves

Solution

Sound waves are longitudinal waves, where the particle displacement is parallel to the direction of wave propagation.

Correct Answer: B — Longitudinal waves

Q. Which of the following is a characteristic of starch?

A. Soluble in water
B. Linear structure
C. Branched structure
D. Sweet taste

Solution

Starch has a branched structure, which allows it to store energy efficiently.

Correct Answer: C — Branched structure

Q. Which of the following is a characteristic of structural isomers?

A. Same connectivity
B. Different connectivity
C. Same physical properties
D. Same optical activity

Solution

Structural isomers have different connectivity of atoms, leading to different compounds.

Correct Answer: B — Different connectivity

Q. Which of the following is a characteristic of synthetic fibers?

A. Biodegradable
B. Natural origin
C. Durable
D. Expensive

Solution

Synthetic fibers are known for their durability and are made from chemical processes, unlike natural fibers.

Correct Answer: C — Durable

Q. Which of the following is a characteristic of the +I effect?

A. Electron donation
B. Electron withdrawal
C. Resonance stabilization
D. Inductive withdrawal

Solution

The +I effect is characterized by electron donation through the inductive effect.

Correct Answer: A — Electron donation

Q. Which of the following is a characteristic of the +M effect?

A. Electron withdrawal
B. Electron donation
C. Increases acidity
D. Decreases stability

Solution

+M effect refers to the donation of electron density through resonance.

Correct Answer: B — Electron donation

Q. Which of the following is a characteristic of the decimal system?

A. It is a base-10 system.
B. It uses only odd numbers.
C. It is not used in everyday calculations.
D. It is less efficient than the binary system.

Solution

The decimal system is a base-10 system, which is widely used in everyday calculations.

Correct Answer: A — It is a base-10 system.

Q. Which of the following is a characteristic of the hexadecimal system?

A. It uses base 10.
B. It includes the digits 0-9 and letters A-F.
C. It is primarily used in human communication.
D. It is less compact than the binary system.

Solution

The hexadecimal system is a base-16 system that includes the digits 0-9 and letters A-F.

Correct Answer: B — It includes the digits 0-9 and letters A-F.

Q. Which of the following is a characteristic of the image formed by a concave mirror when the object is placed between the focal point and the mirror? (2019)

A. Real and inverted
B. Virtual and erect
C. Real and erect
D. Virtual and inverted

Solution

When the object is placed between the focal point and the mirror, the image formed by a concave mirror is virtual and erect.

Correct Answer: B — Virtual and erect

Q. Which of the following is a characteristic of the inductive effect?

A. It is a temporary effect.
B. It operates through pi bonds.
C. It decreases with distance.
D. It is stronger than the mesomeric effect.

Solution

The inductive effect decreases with distance from the electronegative atom or group.

Correct Answer: C — It decreases with distance.

Q. Which of the following is a characteristic of the kingdom Animalia? (2021)

A. Cell walls
B. Autotrophic nutrition
C. Multicellular and heterotrophic
D. Chlorophyll

Solution

The kingdom Animalia consists of multicellular and heterotrophic organisms.

Correct Answer: C — Multicellular and heterotrophic

Q. Which of the following is a characteristic of the kingdom Archaea? (2023)

A. Presence of peptidoglycan in cell walls
B. Extreme environmental conditions
C. Eukaryotic cells
D. Photosynthetic

Solution

Archaea are known for thriving in extreme environmental conditions.

Correct Answer: B — Extreme environmental conditions

Q. Which of the following is a characteristic of the kingdom Monera? (2019)

A. Eukaryotic cells
B. Multicellular organisms
C. Prokaryotic cells
D. Chloroplasts

Solution

Monera consists of prokaryotic cells, which are unicellular and lack a defined nucleus.

Correct Answer: C — Prokaryotic cells

Q. Which of the following is a characteristic of the kingdom Plantae? (2022)

A. Heterotrophic
B. Cellulose in cell walls
C. Unicellular
D. Motile

Solution

Plants are characterized by having cellulose in their cell walls.

Correct Answer: B — Cellulose in cell walls

Q. Which of the following is a characteristic of the kingdom Protista?

A. All are multicellular
B. All are prokaryotic
C. Includes both autotrophic and heterotrophic organisms
D. Only unicellular organisms

Solution

The kingdom Protista includes both autotrophic and heterotrophic organisms.

Correct Answer: C — Includes both autotrophic and heterotrophic organisms

Q. Which of the following is a characteristic of the phylum Annelida? (2023)

A. Body is segmented
B. Presence of a shell
C. Radial symmetry
D. Exoskeleton

Solution

Annelida, or segmented worms, are characterized by their segmented bodies.

Correct Answer: A — Body is segmented

Q. Which of the following is a characteristic of the phylum Echinodermata? (2021)

A. Bilateral symmetry
B. Radial symmetry in adults
C. Exoskeleton made of chitin
D. Presence of a notochord

Solution

Echinoderms exhibit radial symmetry in their adult form, which is a defining characteristic of this phylum.

Correct Answer: B — Radial symmetry in adults

Q. Which of the following is a characteristic of the phylum Nematoda? (2022)

A. Segmented body
B. Presence of a true coelom
C. Body covered with a cuticle
D. Radial symmetry

Solution

Nematodes, or roundworms, are characterized by a body covered with a cuticle and are unsegmented.

Correct Answer: C — Body covered with a cuticle

Q. Which of the following is a characteristic of the phylum Porifera? (2019)

A. True tissues
B. Radial symmetry
C. Body with pores
D. Bilateral symmetry

Solution

Phylum Porifera, which includes sponges, is characterized by a porous body structure.

Correct Answer: C — Body with pores

Q. Which of the following is a characteristic of thermoplastic polymers?

A. They can be reshaped upon heating
B. They are rigid and brittle
C. They do not melt
D. They are cross-linked

Solution

Thermoplastic polymers can be reshaped upon heating, unlike thermosetting polymers.

Correct Answer: A — They can be reshaped upon heating

Q. Which of the following is a characteristic of thermosetting polymers?

A. They can be remolded upon heating
B. They are soluble in organic solvents
C. They do not melt upon heating
D. They are flexible

Solution

Thermosetting polymers do not melt upon heating; they harden permanently after being set.

Correct Answer: C — They do not melt upon heating

Q. Which of the following is a characteristic of threads?

A. Threads share the same memory space
B. Threads cannot communicate with each other
C. Threads are heavier than processes
D. Threads require separate memory allocation

Solution

Threads within the same process share the same memory space, allowing for efficient communication.

Correct Answer: A — Threads share the same memory space

Q. Which of the following is a characteristic of transition metals?

A. They have completely filled d-orbitals.
B. They form colored compounds.
C. They do not form complexes.
D. They have low melting points.

Solution

Transition metals are known for forming colored compounds due to d-d electron transitions.

Correct Answer: B — They form colored compounds.

Q. Which of the following is a characteristic of underdamped oscillations?

A. No oscillation occurs
B. Oscillations decay slowly
C. Oscillations decay rapidly
D. Oscillations are constant

Solution

Underdamped oscillations occur when the damping is weak, allowing the system to oscillate with a gradually decreasing amplitude.

Correct Answer: B — Oscillations decay slowly

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