Engineering Entrance MCQ & Objective Questions
Preparing for Engineering Entrance exams is crucial for aspiring engineers in India. Mastering MCQs and objective questions not only enhances your understanding of key concepts but also boosts your confidence during exams. Regular practice with these questions helps identify important topics and improves your overall exam preparation.
What You Will Practise Here
Fundamental concepts of Physics and Mathematics
Key formulas and their applications in problem-solving
Important definitions and theorems relevant to engineering
Diagrams and graphical representations for better understanding
Conceptual questions that challenge your critical thinking
Previous years' question papers and their analysis
Time management strategies while solving MCQs
Exam Relevance
The Engineering Entrance syllabus is integral to various examinations like CBSE, State Boards, NEET, and JEE. Questions often focus on core subjects such as Physics, Chemistry, and Mathematics, with formats varying from direct MCQs to application-based problems. Understanding the common question patterns can significantly enhance your performance and help you tackle the exams with ease.
Common Mistakes Students Make
Overlooking the importance of units and dimensions in calculations
Misinterpreting questions due to lack of careful reading
Neglecting to review basic concepts before attempting advanced problems
Rushing through practice questions without thorough understanding
FAQs
Question: What are the best ways to prepare for Engineering Entrance MCQs?Answer: Focus on understanding concepts, practice regularly with objective questions, and review previous years' papers.
Question: How can I improve my speed in solving MCQs?Answer: Regular practice, time-bound mock tests, and familiarizing yourself with common question types can help improve your speed.
Start your journey towards success by solving Engineering Entrance MCQ questions today! Test your understanding and build a strong foundation for your exams.
Q. What is the length of the diagonal of a rectangle with vertices at (0, 0), (4, 0), (4, 3), and (0, 3)? (2021)
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Solution
Length of diagonal = √[(4-0)² + (3-0)²] = √[16 + 9] = √25 = 5.
Correct Answer:
A
— 5
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Q. What is the length of the diagonal of a rectangle with vertices at (1, 1), (1, 4), (5, 1), and (5, 4)? (2021)
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Solution
Diagonal length = √[(5-1)² + (4-1)²] = √[16 + 9] = √25 = 5.
Correct Answer:
B
— 5
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Q. What is the magnetic field at a distance r from a long straight wire carrying current I? (2020)
A.
μ₀I/(2πr)
B.
μ₀I/(4πr)
C.
μ₀I/(πr)
D.
μ₀I/(8πr)
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Solution
The magnetic field around a long straight wire is given by B = (μ₀I)/(2πr).
Correct Answer:
A
— μ₀I/(2πr)
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Q. What is the magnetic field at the center of a circular loop carrying current? (2022)
A.
Zero
B.
Directly proportional to current
C.
Inversely proportional to radius
D.
Both A and B
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Solution
The magnetic field at the center of a circular loop carrying current is directly proportional to the current and inversely proportional to the radius.
Correct Answer:
B
— Directly proportional to current
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Q. What is the magnetic field due to a straight current-carrying conductor at a distance 'r' from it? (2020)
A.
μ₀I/2πr
B.
μ₀I/4πr²
C.
μ₀I/2r
D.
μ₀I/πr
Show solution
Solution
The magnetic field due to a straight current-carrying conductor is given by B = μ₀I/2πr.
Correct Answer:
A
— μ₀I/2πr
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Q. What is the magnetic field inside a long solenoid when it carries a current? (2023)
A.
Zero
B.
Uniform and directed along the axis
C.
Varies with distance
D.
Depends on the temperature
Show solution
Solution
The magnetic field inside a long solenoid is uniform and directed along the axis of the solenoid when it carries a current.
Correct Answer:
B
— Uniform and directed along the axis
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Q. What is the magnetic field inside a long solenoid when the current is flowing through it? (2023)
A.
Zero
B.
Uniform and parallel
C.
Concentric circles
D.
Radial
Show solution
Solution
The magnetic field inside a long solenoid is uniform and parallel to the axis of the solenoid.
Correct Answer:
B
— Uniform and parallel
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Q. What is the magnetic field inside a long solenoid when the current is steady? (2023)
A.
Zero
B.
Uniform and parallel to the axis
C.
Varies with distance
D.
Depends on the temperature
Show solution
Solution
The magnetic field inside a long solenoid is uniform and parallel to the axis of the solenoid when the current is steady.
Correct Answer:
B
— Uniform and parallel to the axis
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Q. What is the magnetic field inside a long solenoid? (2023)
A.
Zero
B.
Uniform and parallel
C.
Concentric circles
D.
Decreasing
Show solution
Solution
The magnetic field inside a long solenoid is uniform and parallel to the axis of the solenoid.
Correct Answer:
B
— Uniform and parallel
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Q. What is the main characteristic of elastomers?
A.
Brittle
B.
Elastic
C.
Rigid
D.
Transparent
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Solution
Elastomers are characterized by their elastic properties, allowing them to stretch and return to their original shape.
Correct Answer:
B
— Elastic
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Q. What is the main component of a nuclear reactor that slows down neutrons? (2023)
A.
Control rods
B.
Moderator
C.
Coolant
D.
Shielding
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Solution
The moderator is the main component in a nuclear reactor that slows down neutrons to sustain the nuclear chain reaction.
Correct Answer:
B
— Moderator
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Q. What is the main component of natural rubber?
A.
Polyisoprene
B.
Polystyrene
C.
Polyethylene
D.
Polyvinyl acetate
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Solution
Natural rubber is primarily composed of polyisoprene, which is derived from latex.
Correct Answer:
A
— Polyisoprene
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Q. What is the main function of lipids in the body?
A.
Energy storage
B.
Genetic information
C.
Structural support
D.
Transport
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Solution
Lipids serve as a major form of energy storage in the body.
Correct Answer:
A
— Energy storage
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Q. What is the main product of the combustion of hydrocarbons? (2023) 2023
A.
Oxygen
B.
Water
C.
Carbon Dioxide
D.
Nitrogen
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Solution
The main products of the combustion of hydrocarbons are water (H2O) and carbon dioxide (CO2).
Correct Answer:
C
— Carbon Dioxide
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Q. What is the main product of the complete combustion of ethane (C2H6)? (2023)
A.
Carbon dioxide and water
B.
Carbon monoxide and water
C.
Soot and water
D.
Hydrogen gas
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Solution
The complete combustion of ethane produces carbon dioxide and water as the main products.
Correct Answer:
A
— Carbon dioxide and water
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Q. What is the main product of the complete combustion of methane? (2023)
A.
Carbon dioxide and water
B.
Carbon monoxide and water
C.
Carbon and hydrogen
D.
Oxygen and water
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Solution
The complete combustion of methane (CH4) produces carbon dioxide (CO2) and water (H2O).
Correct Answer:
A
— Carbon dioxide and water
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Q. What is the main product of the oxidation of ethanol?
A.
Acetic acid
B.
Formic acid
C.
Butanoic acid
D.
Propanoic acid
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Solution
The main product of the oxidation of ethanol is acetic acid.
Correct Answer:
A
— Acetic acid
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Q. What is the main product when 1-bromobutane reacts with sodium hydroxide in ethanol? (2021)
A.
Butanol
B.
Butene
C.
Sodium bromide
D.
Butyric acid
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Solution
The reaction of 1-bromobutane with sodium hydroxide in ethanol leads to elimination, forming butene as the main product.
Correct Answer:
B
— Butene
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Q. What is the main product when an amine reacts with an acyl chloride?
A.
Amide
B.
Ester
C.
Alcohol
D.
Aldehyde
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Solution
The reaction of an amine with an acyl chloride produces an amide.
Correct Answer:
A
— Amide
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Q. What is the main product when an amine reacts with an alkyl halide?
A.
Amide
B.
Quaternary ammonium salt
C.
Alcohol
D.
Ester
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Solution
The main product is a quaternary ammonium salt when an amine reacts with an alkyl halide, as the amine can be further alkylated.
Correct Answer:
B
— Quaternary ammonium salt
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Q. What is the main product when ethene reacts with bromine?
A.
Bromethane
B.
1,2-Dibromoethane
C.
Ethane
D.
Bromoethane
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Solution
The reaction of ethene with bromine results in the formation of 1,2-dibromoethane.
Correct Answer:
B
— 1,2-Dibromoethane
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Q. What is the main product when ethene reacts with hydrogen in the presence of a catalyst?
A.
Ethane
B.
Ethanol
C.
Ethyl chloride
D.
Acetylene
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Solution
The main product is ethane, formed by the hydrogenation of ethene.
Correct Answer:
A
— Ethane
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Q. What is the main product when phenol is treated with bromine?
A.
Bromobenzene
B.
Bromophenol
C.
Benzene
D.
Bromobutane
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Solution
Bromine reacts with phenol to form bromophenol, which is a substitution product.
Correct Answer:
B
— Bromophenol
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Q. What is the main product when phenol reacts with bromine? (2019)
A.
Bromobenzene
B.
Bromophenol
C.
Benzene
D.
No reaction
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Solution
Phenol reacts with bromine to form Bromophenol, which is a brominated derivative of phenol.
Correct Answer:
B
— Bromophenol
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Q. What is the main product when phenol reacts with sodium hydroxide?
A.
Sodium phenoxide
B.
Sodium benzoate
C.
Benzene
D.
Phenyl acetate
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Solution
Phenol reacts with sodium hydroxide to form sodium phenoxide, which is a salt of phenol.
Correct Answer:
A
— Sodium phenoxide
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Q. What is the main product when propan-2-one is treated with iodine in the presence of a base?
A.
Iodoform
B.
Acetone
C.
Bromoform
D.
Chloroform
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Solution
Propan-2-one (acetone) reacts with iodine in the presence of a base to form Iodoform.
Correct Answer:
A
— Iodoform
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Q. What is the main reaction of phenols with bromine water? (2020)
A.
No reaction
B.
Formation of brominated phenol
C.
Formation of phenyl ether
D.
Formation of phenol red
Show solution
Solution
Phenols react with bromine water to form brominated phenols, which are usually colorless or pale yellow.
Correct Answer:
B
— Formation of brominated phenol
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Q. What is the main reaction of phenols with sodium hydroxide? (2020)
A.
Formation of sodium phenoxide
B.
Formation of ether
C.
Formation of alcohol
D.
Formation of ketone
Show solution
Solution
Phenols react with sodium hydroxide to form sodium phenoxide, which is a salt of phenol.
Correct Answer:
A
— Formation of sodium phenoxide
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Q. What is the main type of reaction that haloalkanes undergo? (2020)
A.
Addition
B.
Substitution
C.
Elimination
D.
Redox
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Solution
Haloalkanes primarily undergo nucleophilic substitution reactions due to the presence of a good leaving group (halogen).
Correct Answer:
B
— Substitution
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Q. What is the main use of citric acid?
A.
Preservative
B.
Flavoring agent
C.
Cleaning agent
D.
All of the above
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Solution
Citric acid is used as a preservative, flavoring agent, and cleaning agent.
Correct Answer:
D
— All of the above
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