Q. What is the product of the hydrolysis of ethyl acetate in the presence of a strong acid?
A.
Ethanol and Acetic Acid
B.
Ethylene and Water
C.
Acetic Anhydride
D.
Ethyl Alcohol
Show solution
Solution
Hydrolysis of ethyl acetate in acid gives ethanol and acetic acid.
Correct Answer:
A
— Ethanol and Acetic Acid
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Q. What is the product of the oxidation of a primary alcohol?
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alkane
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Solution
The oxidation of a primary alcohol results in the formation of an aldehyde.
Correct Answer:
A
— Aldehyde
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Q. What is the product of the ozonolysis of 1-pentene?
A.
Pentanal
B.
Acetaldehyde
C.
Butan-2-one
D.
Propanoic acid
Show solution
Solution
Ozonolysis of 1-pentene yields pentanal as one of the products.
Correct Answer:
A
— Pentanal
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Q. What is the product of the reaction between 1-bromopropane and sodium ethoxide?
A.
Ethyl propyl ether
B.
Propyl ethyl ether
C.
1-bromo-2-ethylpropane
D.
No reaction
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Solution
The reaction of 1-bromopropane with sodium ethoxide leads to the formation of ethyl propyl ether through nucleophilic substitution.
Correct Answer:
A
— Ethyl propyl ether
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Q. What is the product of the reaction between 1-butyne and HBr?
A.
1-bromobutane
B.
2-bromobutane
C.
butane
D.
butyne
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Solution
The reaction of 1-butyne with HBr leads to the formation of 2-bromobutane due to Markovnikov's rule.
Correct Answer:
B
— 2-bromobutane
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Q. What is the product of the reaction between 1-chlorobutane and potassium cyanide?
A.
1-cyanobutane
B.
2-cyanobutane
C.
butane
D.
no reaction
Show solution
Solution
1-cyanobutane is formed through nucleophilic substitution where the cyanide ion acts as a nucleophile.
Correct Answer:
A
— 1-cyanobutane
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Q. What is the product of the reaction between a carboxylic acid and an alcohol?
A.
Amide
B.
Ester
C.
Aldehyde
D.
Ketone
Show solution
Solution
The reaction between a carboxylic acid and an alcohol produces an ester.
Correct Answer:
B
— Ester
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Q. What is the product of the reaction between acetic acid and sodium bicarbonate?
A.
Sodium acetate
B.
Carbon dioxide
C.
Water
D.
All of the above
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Solution
The reaction produces sodium acetate, carbon dioxide, and water, making 'All of the above' the correct answer.
Correct Answer:
D
— All of the above
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Q. What is the product of the reaction between acetone and iodine in the presence of a base?
A.
Iodoacetone
B.
Iodoform
C.
Bromoacetone
D.
Chloroacetone
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Solution
The product is Iodoform, formed from the reaction of acetone with iodine in the presence of a base.
Correct Answer:
B
— Iodoform
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Q. What is the product of the reaction between an alcohol and a carboxylic acid?
A.
Ester
B.
Ether
C.
Aldehyde
D.
Ketone
Show solution
Solution
The reaction between an alcohol and a carboxylic acid produces an ester through a process called esterification.
Correct Answer:
A
— Ester
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Q. What is the product of the reaction between an aldehyde and a Grignard reagent?
A.
Alcohol
B.
Ketone
C.
Carboxylic acid
D.
Alkane
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Solution
The reaction between an aldehyde and a Grignard reagent produces a secondary alcohol after hydrolysis.
Correct Answer:
A
— Alcohol
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Q. What is the product of the reaction between an aldehyde and a primary amine?
A.
Imine
B.
Amide
C.
Amino acid
D.
Alcohol
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Solution
The reaction between an aldehyde and a primary amine produces an imine.
Correct Answer:
A
— Imine
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Q. What is the product of the reaction between an amine and an acyl chloride?
A.
Amide
B.
Ester
C.
Carboxylic acid
D.
Alcohol
Show solution
Solution
Amines react with acyl chlorides to form amides through a nucleophilic acyl substitution reaction.
Correct Answer:
A
— Amide
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Q. What is the product of the reaction between benzene and bromine in the presence of FeBr3?
A.
Bromobenzene
B.
Benzyl bromide
C.
Bromocyclohexane
D.
Phenol
Show solution
Solution
The reaction of benzene with bromine in the presence of a Lewis acid like FeBr3 leads to the formation of bromobenzene.
Correct Answer:
A
— Bromobenzene
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Q. What is the product of the reaction between chlorobenzene and sodium hydroxide at high temperature?
A.
Phenol
B.
Benzyl alcohol
C.
Chlorobenzene
D.
Sodium phenoxide
Show solution
Solution
Chlorobenzene reacts with sodium hydroxide in the presence of heat to form phenol via nucleophilic substitution.
Correct Answer:
A
— Phenol
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Q. What is the product of the reaction between phenol and bromine water?
A.
Bromobenzene
B.
2,4,6-tribromophenol
C.
Bromophenol
D.
Bromobutane
Show solution
Solution
Phenol reacts with bromine water to form 2,4,6-tribromophenol, a white precipitate.
Correct Answer:
B
— 2,4,6-tribromophenol
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Q. What is the product of the reaction between phenol and bromine?
A.
Bromobenzene
B.
Bromophenol
C.
Bromobutane
D.
No reaction
Show solution
Solution
Phenol reacts with bromine to form bromophenol, which is a substitution reaction.
Correct Answer:
B
— Bromophenol
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Q. What is the product of the reaction of 1-butyne with HBr?
A.
1-bromobutane
B.
2-bromobutane
C.
Butane
D.
Butyne
Show solution
Solution
The reaction of 1-butyne with HBr leads to the formation of 2-bromobutane due to Markovnikov's rule.
Correct Answer:
B
— 2-bromobutane
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Q. What is the product of the reaction of an alcohol with a carboxylic acid?
A.
Ester
B.
Ether
C.
Aldehyde
D.
Ketone
Show solution
Solution
The reaction of an alcohol with a carboxylic acid produces an ester through a process called esterification.
Correct Answer:
A
— Ester
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Q. What is the product of the reaction of chlorobenzene with sodium hydroxide at high temperature?
A.
Phenol
B.
Benzene
C.
Chlorobenzene
D.
Sodium chloride
Show solution
Solution
The reaction of chlorobenzene with sodium hydroxide at high temperature leads to the formation of phenol through nucleophilic aromatic substitution.
Correct Answer:
A
— Phenol
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Q. What is the product of the reaction of ethylene with chlorine?
A.
Ethyl chloride
B.
1,2-dichloroethane
C.
Chloroethane
D.
Ethylene dichloride
Show solution
Solution
The reaction of ethylene with chlorine results in the formation of 1,2-dichloroethane through an electrophilic addition mechanism.
Correct Answer:
B
— 1,2-dichloroethane
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Q. What is the product of the reaction of propene with HBr?
A.
1-Bromopropane
B.
2-Bromopropane
C.
Propyl bromide
D.
Bromopropene
Show solution
Solution
The reaction follows Markovnikov's rule, leading to the formation of 2-Bromopropane.
Correct Answer:
B
— 2-Bromopropane
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Q. What is the product when propan-2-one reacts with iodine in the presence of a base?
A.
Iodoform
B.
Bromoform
C.
Chloroform
D.
No reaction
Show solution
Solution
Propan-2-one reacts with iodine in the presence of a base to form iodoform (CHI3).
Correct Answer:
A
— Iodoform
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Q. What is the rate law expression for a reaction with the rate equation rate = k[A]^2[B]?
A.
rate = k[A][B]
B.
rate = k[A]^2
C.
rate = k[A]^2[B]
D.
rate = k[B]
Show solution
Solution
The rate law expression is derived directly from the rate equation, which is given as rate = k[A]^2[B].
Correct Answer:
C
— rate = k[A]^2[B]
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Q. What is the reducing agent in the reaction 2MnO4- + 5C2O4^2- + 6H+ → 2Mn^2+ + 10CO2 + 3H2O?
A.
MnO4-
B.
C2O4^2-
C.
H+
D.
CO2
Show solution
Solution
C2O4^2- is the reducing agent as it donates electrons.
Correct Answer:
B
— C2O4^2-
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Q. What is the reducing agent in the reaction Zn + CuSO4 → ZnSO4 + Cu?
A.
Zn
B.
Cu
C.
CuSO4
D.
ZnSO4
Show solution
Solution
Zinc (Zn) is the reducing agent as it donates electrons to copper.
Correct Answer:
A
— Zn
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Q. What is the reduction half-reaction for the conversion of MnO4- to Mn2+ in acidic medium?
A.
MnO4- + 8H+ + 5e- → Mn2+ + 4H2O
B.
MnO4- + 5e- → Mn2+ + 8H+ + 4H2O
C.
MnO4- + 4H2O + 5e- → Mn2+ + 8H+
D.
MnO4- + 5e- + 4H2O → Mn2+ + 8H+
Show solution
Solution
The correct reduction half-reaction in acidic medium is MnO4- + 8H+ + 5e- → Mn2+ + 4H2O.
Correct Answer:
A
— MnO4- + 8H+ + 5e- → Mn2+ + 4H2O
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Q. What is the reduction half-reaction for the reaction 2MnO4- + 16H+ + 10e- → 2Mn2+ + 8H2O?
A.
MnO4- + 8H2O + 10e- → Mn2+ + 16H+
B.
MnO4- + 10e- + 8H+ → Mn2+ + 4H2O
C.
MnO4- + 10e- → Mn2+ + 8H2O
D.
MnO4- + 16H+ → Mn2+ + 10e- + 8H2O
Show solution
Solution
The correct reduction half-reaction shows the gain of electrons and protons.
Correct Answer:
B
— MnO4- + 10e- + 8H+ → Mn2+ + 4H2O
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Q. What is the reduction half-reaction for the reaction of copper(II) ions with zinc?
A.
Cu^2+ + 2e^- → Cu
B.
Zn → Zn^2+ + 2e^-
C.
Cu → Cu^2+ + 2e^-
D.
Zn^2+ + 2e^- → Zn
Show solution
Solution
The reduction half-reaction is Cu^2+ + 2e^- → Cu.
Correct Answer:
A
— Cu^2+ + 2e^- → Cu
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Q. What is the reduction half-reaction for the reaction of MnO4- in acidic medium?
A.
MnO4- + 8H+ + 5e- → Mn2+ + 4H2O
B.
MnO4- + 3e- → MnO2 + 2H2O
C.
MnO4- + 2e- → MnO2 + 4H+
D.
MnO4- + 4e- + 8H+ → MnO2 + 4H2O
Show solution
Solution
In acidic medium, MnO4- is reduced to Mn2+.
Correct Answer:
A
— MnO4- + 8H+ + 5e- → Mn2+ + 4H2O
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Showing 1291 to 1320 of 2802 (94 Pages)
Chemistry Syllabus (JEE Main) MCQ & Objective Questions
The Chemistry Syllabus for JEE Main is crucial for students aiming to excel in their exams. Understanding this syllabus not only helps in grasping fundamental concepts but also enhances performance in objective questions and MCQs. Regular practice with these types of questions is essential for scoring better and mastering important topics.
What You Will Practise Here
Basic Concepts of Chemistry
Atomic Structure and Chemical Bonding
States of Matter: Gases and Liquids
Thermodynamics and Thermochemistry
Equilibrium: Chemical and Ionic
Redox Reactions and Electrochemistry
Hydrocarbons and Environmental Chemistry
Exam Relevance
The Chemistry syllabus is a significant part of CBSE, State Boards, NEET, and JEE exams. Questions from this syllabus often appear in various formats, including multiple-choice questions, assertion-reason type questions, and numerical problems. Familiarity with the common question patterns can greatly enhance your exam preparation and confidence.
Common Mistakes Students Make
Misunderstanding the periodic trends and their implications.
Confusing different types of chemical bonds and their properties.
Neglecting to balance redox reactions properly.
Overlooking the significance of units in thermodynamic calculations.
Failing to apply concepts of equilibrium in problem-solving.
FAQs
Question: What are the key topics I should focus on in the Chemistry syllabus for JEE Main?Answer: Focus on atomic structure, chemical bonding, thermodynamics, and equilibrium as they are frequently tested.
Question: How can I improve my performance in Chemistry MCQs?Answer: Regular practice with past papers and understanding concepts deeply will help you tackle MCQs effectively.
Start your journey towards mastering the Chemistry Syllabus (JEE Main) by solving practice MCQs today. Test your understanding and build confidence for your exams!