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 primary producer in a terrestrial ecosystem? (2019)
A.
Herbivores
B.
Carnivores
C.
Plants
D.
Decomposers
Show solution
Solution
Plants are the primary producers in terrestrial ecosystems as they convert sunlight into energy through photosynthesis.
Correct Answer:
C
— Plants
Learn More →
Q. What is the primary product formed when hydrogen reacts with oxygen?
A.
Water
B.
Hydrogen peroxide
C.
Ozone
D.
Hydroxyl radical
Show solution
Solution
The primary product of the reaction between hydrogen and oxygen is water (H2O).
Correct Answer:
A
— Water
Learn More →
Q. What is the primary product of a nuclear fusion reaction in stars?
A.
Helium
B.
Hydrogen
C.
Carbon
D.
Uranium
Show solution
Solution
The primary product of nuclear fusion reactions in stars is helium, formed from the fusion of hydrogen nuclei.
Correct Answer:
A
— Helium
Learn More →
Q. What is the primary product of nuclear fission? (2019)
A.
Energy
B.
Neutrons
C.
Protons
D.
Alpha particles
Show solution
Solution
The primary product of nuclear fission is energy, along with neutrons and smaller nuclei.
Correct Answer:
A
— Energy
Learn More →
Q. What is the primary product of nuclear fusion in stars like the Sun?
A.
Helium
B.
Hydrogen
C.
Carbon
D.
Oxygen
Show solution
Solution
The primary product of nuclear fusion in stars like the Sun is helium, formed from the fusion of hydrogen nuclei.
Correct Answer:
A
— Helium
Learn More →
Q. What is the primary product of the complete combustion of hydrocarbons?
A.
Carbon monoxide
B.
Carbon dioxide
C.
Water
D.
Oxygen
Show solution
Solution
The complete combustion of hydrocarbons primarily produces carbon dioxide and water.
Correct Answer:
B
— Carbon dioxide
Learn More →
Q. What is the primary product of the complete combustion of propane (C3H8)? (2020)
A.
Carbon monoxide
B.
Water
C.
Carbon dioxide
D.
Hydrogen
Show solution
Solution
The complete combustion of propane produces carbon dioxide (CO2) and water (H2O) as primary products.
Correct Answer:
C
— Carbon dioxide
Learn More →
Q. What is the primary product of the electrolysis of water? (2023)
A.
Hydrogen
B.
Oxygen
C.
Hydrogen Peroxide
D.
Ozone
Show solution
Solution
The primary products of the electrolysis of water are hydrogen and oxygen gases.
Correct Answer:
A
— Hydrogen
Learn More →
Q. What is the primary product of the fission of Uranium-235? (2019)
A.
Helium
B.
Neutrons
C.
Barium and Krypton
D.
Carbon
Show solution
Solution
The fission of Uranium-235 primarily produces Barium and Krypton along with additional neutrons.
Correct Answer:
C
— Barium and Krypton
Learn More →
Q. What is the primary product of the fusion of hydrogen nuclei in stars? (2022)
A.
Helium
B.
Carbon
C.
Oxygen
D.
Nitrogen
Show solution
Solution
The primary product of hydrogen fusion in stars is helium, which occurs through the proton-proton chain reaction.
Correct Answer:
A
— Helium
Learn More →
Q. What is the primary product of the fusion of hydrogen nuclei? (2022)
A.
Helium
B.
Carbon
C.
Oxygen
D.
Deuterium
Show solution
Solution
The primary product of the fusion of hydrogen nuclei (protons) is helium, along with the release of energy.
Correct Answer:
A
— Helium
Learn More →
Q. What is the primary product of the hydrolysis of an ester?
A.
Alcohol
B.
Carboxylic acid
C.
Both alcohol and carboxylic acid
D.
None of the above
Show solution
Solution
Hydrolysis of an ester produces both an alcohol and a carboxylic acid.
Correct Answer:
C
— Both alcohol and carboxylic acid
Learn More →
Q. What is the primary product of the reaction between 1-chlorobutane and potassium cyanide?
A.
1-cyanobutane
B.
2-cyanobutane
C.
Butyronitrile
D.
Butyl cyanide
Show solution
Solution
The reaction leads to the formation of 1-cyanobutane through nucleophilic substitution.
Correct Answer:
A
— 1-cyanobutane
Learn More →
Q. What is the primary product of the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst?
A.
Aldehyde
B.
Ester
C.
Ketone
D.
Amide
Show solution
Solution
The reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst produces an ester.
Correct Answer:
B
— Ester
Learn More →
Q. What is the primary product of the reaction between ethene and bromine?
A.
1,2-dibromoethane
B.
Bromoethane
C.
Ethane
D.
Bromobenzene
Show solution
Solution
Ethene reacts with bromine to form 1,2-dibromoethane through an electrophilic addition mechanism.
Correct Answer:
A
— 1,2-dibromoethane
Learn More →
Q. What is the primary product of the reaction between hydrogen and chlorine? (2019)
A.
Hydrochloric acid
B.
Hydrogen chloride
C.
Chlorine gas
D.
Water
Show solution
Solution
The primary product of the reaction between hydrogen and chlorine is hydrogen chloride (HCl).
Correct Answer:
B
— Hydrogen chloride
Learn More →
Q. What is the primary product of the thermal decomposition of calcium carbonate? (2019)
A.
Calcium oxide
B.
Calcium hydroxide
C.
Calcium bicarbonate
D.
Calcium chloride
Show solution
Solution
The thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2).
Correct Answer:
A
— Calcium oxide
Learn More →
Q. What is the primary product when 1-bromo-2-methylpropane reacts with KOH in ethanol?
A.
2-methylpropene
B.
1-methylpropene
C.
2-bromopropane
D.
no reaction
Show solution
Solution
The reaction leads to the formation of 2-methylpropene through an elimination reaction.
Correct Answer:
A
— 2-methylpropene
Learn More →
Q. What is the primary product when 1-chloropropane reacts with potassium tert-butoxide?
A.
Propene
B.
2-methylpropane
C.
1-butene
D.
No reaction
Show solution
Solution
The reaction of 1-chloropropane with potassium tert-butoxide leads to the formation of propene via an elimination reaction.
Correct Answer:
A
— Propene
Learn More →
Q. What is the primary product when a carboxylic acid is reduced with lithium aluminum hydride (LiAlH4)?
A.
Alcohol
B.
Aldehyde
C.
Ketone
D.
Ester
Show solution
Solution
Lithium aluminum hydride reduces carboxylic acids to primary alcohols.
Correct Answer:
A
— Alcohol
Learn More →
Q. What is the primary product when a carboxylic acid reacts with thionyl chloride (SOCl2)?
A.
Acid chloride
B.
Ester
C.
Alcohol
D.
Aldehyde
Show solution
Solution
The primary product of the reaction between a carboxylic acid and thionyl chloride is an acid chloride.
Correct Answer:
A
— Acid chloride
Learn More →
Q. What is the primary product when aluminum reacts with hydrochloric acid? (2020)
A.
AlCl3
B.
H2
C.
Al(OH)3
D.
Al2Cl6
Show solution
Solution
When aluminum reacts with hydrochloric acid, hydrogen gas (H2) is produced along with aluminum chloride (AlCl3).
Correct Answer:
B
— H2
Learn More →
Q. What is the primary product when ammonia reacts with an alkyl halide?
A.
Amine
B.
Amide
C.
Alkane
D.
Alcohol
Show solution
Solution
The primary product of the reaction between ammonia and an alkyl halide is an amine.
Correct Answer:
A
— Amine
Learn More →
Q. What is the primary product when an acid reacts with a metal carbonate?
A.
Salt
B.
Water
C.
Carbon dioxide
D.
All of the above
Show solution
Solution
The reaction produces a salt, water, and carbon dioxide.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the primary product when an alcohol is oxidized?
A.
Alkane
B.
Aldehyde
C.
Ketone
D.
Carboxylic acid
Show solution
Solution
The primary product of the oxidation of a primary alcohol is an aldehyde.
Correct Answer:
B
— Aldehyde
Learn More →
Q. What is the primary product when calcium reacts with oxygen? (2022)
A.
Calcium oxide
B.
Calcium hydroxide
C.
Calcium carbonate
D.
Calcium peroxide
Show solution
Solution
Calcium reacts with oxygen to form calcium oxide (CaO).
Correct Answer:
A
— Calcium oxide
Learn More →
Q. What is the primary product when chlorobenzene is treated with sodium hydroxide at high temperature?
A.
Phenol
B.
Benzene
C.
Chlorobenzene
D.
Sodium chloride
Show solution
Solution
Chlorobenzene reacts with sodium hydroxide at high temperature to form phenol.
Correct Answer:
A
— Phenol
Learn More →
Q. What is the primary product when ethene reacts with water in the presence of an acid?
A.
Ethanol
B.
Ethane
C.
Ethanoic acid
D.
Ethylene glycol
Show solution
Solution
The reaction of ethene with water in the presence of an acid (hydration) produces ethanol.
Correct Answer:
A
— Ethanol
Learn More →
Q. What is the primary product when hydrogen reacts with oxygen?
A.
Water
B.
Hydrogen peroxide
C.
Ozone
D.
Hydroxyl radical
Show solution
Solution
The primary product of the reaction between hydrogen and oxygen is water (H2O).
Correct Answer:
A
— Water
Learn More →
Q. What is the primary product when lithium reacts with nitrogen? (2022)
A.
Lithium nitride
B.
Lithium oxide
C.
Lithium hydroxide
D.
Lithium carbonate
Show solution
Solution
Lithium reacts with nitrogen to form lithium nitride (Li3N).
Correct Answer:
A
— Lithium nitride
Learn More →
Showing 22831 to 22860 of 31669 (1056 Pages)