Q. What is the hybridization of the nitrogen atom in a primary amine?
A.
sp
B.
sp2
C.
sp3
D.
sp3d
Show solution
Solution
The nitrogen atom in a primary amine is sp3 hybridized.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in an amine?
A.
sp
B.
sp2
C.
sp3
D.
sp3d
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Solution
The nitrogen atom in amines is sp3 hybridized, having a tetrahedral geometry with one lone pair.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in NH3?
A.
sp
B.
sp2
C.
sp3
D.
dsp3
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Solution
In NH3, nitrogen has three bonds and one lone pair, leading to sp3 hybridization.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the phosphorus atom in PCl5?
A.
sp
B.
sp2
C.
sp3
D.
d2sp3
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Solution
In PCl5, phosphorus is surrounded by five chlorine atoms, indicating d2sp3 hybridization.
Correct Answer:
D
— d2sp3
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Q. What is the integrated rate law for a first-order reaction?
A.
ln[A] = -kt + ln[A]0
B.
[A] = [A]0 - kt
C.
[A] = [A]0e^(-kt)
D.
1/[A] = kt + 1/[A]0
Show solution
Solution
The integrated rate law for a first-order reaction is ln[A] = -kt + ln[A]0.
Correct Answer:
A
— ln[A] = -kt + ln[A]0
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Q. What is the isoelectric point (pI) of a protein?
A.
The pH at which the protein is positively charged
B.
The pH at which the protein is negatively charged
C.
The pH at which the protein has no net charge
D.
The pH at which the protein is denatured
Show solution
Solution
The isoelectric point (pI) of a protein is the pH at which the protein has no net charge, leading to minimal solubility.
Correct Answer:
C
— The pH at which the protein has no net charge
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Q. What is the isoelectric point of a protein?
A.
The pH at which the protein is positively charged
B.
The pH at which the protein is negatively charged
C.
The pH at which the protein has no net charge
D.
The pH at which the protein denatures
Show solution
Solution
The isoelectric point of a protein is the pH at which the protein has no net charge, leading to minimal solubility.
Correct Answer:
C
— The pH at which the protein has no net charge
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Q. What is the IUPAC name for CH3-CH2-CH=CH2?
A.
Butene
B.
Propene
C.
Butyne
D.
Pentene
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Solution
The IUPAC name for CH3-CH2-CH=CH2 is butene.
Correct Answer:
A
— Butene
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Q. What is the IUPAC name for CH3-CH2-CHO?
A.
Ethyl alcohol
B.
Propionaldehyde
C.
Acetaldehyde
D.
Butyraldehyde
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Solution
The IUPAC name for CH3-CH2-CHO is acetaldehyde.
Correct Answer:
C
— Acetaldehyde
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Q. What is the IUPAC name for the compound C2H5-CHO?
A.
Ethanal
B.
Propanoic acid
C.
Acetaldehyde
D.
Butanal
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Solution
The compound is an aldehyde with two carbons, hence the name is Ethanal.
Correct Answer:
A
— Ethanal
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Q. What is the IUPAC name for the compound C2H5-CO-CH3?
A.
2-Pentanone
B.
3-Pentanone
C.
Butan-2-one
D.
Butan-3-one
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Solution
The compound is a ketone with four carbons, and the carbonyl group is on the second carbon, hence Butan-2-one.
Correct Answer:
C
— Butan-2-one
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Q. What is the IUPAC name for the compound C2H5OH?
A.
Ethanol
B.
Ethylene
C.
Ethane
D.
Acetaldehyde
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Solution
C2H5OH is ethanol, which is an alcohol with two carbon atoms.
Correct Answer:
A
— Ethanol
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Q. What is the IUPAC name for the compound C3H6O?
A.
Propylene oxide
B.
Acetone
C.
Propanal
D.
Cyclopropanol
Show solution
Solution
C3H6O is an aldehyde with three carbons, named Propanal.
Correct Answer:
C
— Propanal
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Q. What is the IUPAC name for the compound C3H7-CO-CH3?
A.
2-Pentanone
B.
3-Pentanone
C.
Butan-2-one
D.
Butan-3-one
Show solution
Solution
The compound is a ketone with a four-carbon chain, and the carbonyl group is on the second carbon, hence it is Butan-2-one.
Correct Answer:
C
— Butan-2-one
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Q. What is the IUPAC name for the compound C6H12O?
A.
Hexanal
B.
Hexan-1-ol
C.
Cyclohexanol
D.
2-Hexanol
Show solution
Solution
The compound is a cyclic alcohol with six carbons, hence it is named Cyclohexanol.
Correct Answer:
C
— Cyclohexanol
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Q. What is the IUPAC name for the compound C6H5-CH(CH3)-OH?
A.
Benzyl alcohol
B.
Phenylpropan-2-ol
C.
2-Phenylpropan-1-ol
D.
2-Phenylpropan-2-ol
Show solution
Solution
The compound has a phenyl group and a hydroxyl group on the second carbon of a three-carbon chain, hence it is Phenylpropan-2-ol.
Correct Answer:
B
— Phenylpropan-2-ol
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Q. What is the IUPAC name for the compound CH3-CH(CH3)-CH2-CH3?
A.
2-Methylbutane
B.
3-Methylbutane
C.
Butane
D.
Pentane
Show solution
Solution
The longest chain has four carbons, and there is a methyl group on the second carbon, making it 2-Methylbutane.
Correct Answer:
A
— 2-Methylbutane
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Q. What is the IUPAC name for the compound CH3-CH(CH3)-CH2-CHO?
A.
3-Methylbutanal
B.
2-Methylbutanal
C.
4-Methylbutanal
D.
Pentanal
Show solution
Solution
The longest chain has four carbons with an aldehyde group, and the methyl group is on the second carbon, making it 2-Methylbutanal.
Correct Answer:
B
— 2-Methylbutanal
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-COOH?
A.
Pentanoic acid
B.
Butanoic acid
C.
Hexanoic acid
D.
Heptanoic acid
Show solution
Solution
The longest carbon chain contains five carbons, and the functional group is a carboxylic acid, hence the name is Pentanoic acid.
Correct Answer:
A
— Pentanoic acid
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Q. What is the IUPAC name for the compound with the formula C2H5-CHO?
A.
Ethanal
B.
Propanoic acid
C.
Acetaldehyde
D.
Butanal
Show solution
Solution
The compound is an aldehyde with two carbons, which is named Acetaldehyde or Ethanal.
Correct Answer:
C
— Acetaldehyde
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Q. What is the IUPAC name for the compound with the formula C2H5-CO-CH3?
A.
2-Pentanone
B.
3-Pentanone
C.
Butan-2-one
D.
Butan-3-one
Show solution
Solution
The compound has a ketone functional group with 4 carbons, making it Butan-2-one.
Correct Answer:
C
— Butan-2-one
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Q. What is the IUPAC name for the compound with the formula C2H5OH?
A.
Ethanol
B.
Ethylene glycol
C.
Ethyl alcohol
D.
Dimethyl ether
Show solution
Solution
C2H5OH is an alcohol with 2 carbons, named Ethanol.
Correct Answer:
A
— Ethanol
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Q. What is the IUPAC name for the compound with the formula C3H6?
A.
Propene
B.
Cyclopropane
C.
Propyne
D.
Propane
Show solution
Solution
C3H6 is an alkene with three carbons, which is named Propene.
Correct Answer:
A
— Propene
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Q. What is the IUPAC name for the compound with the formula C3H7-CO-CH3?
A.
Butan-2-one
B.
Propan-2-one
C.
Pentanal
D.
Butanal
Show solution
Solution
The compound is a ketone with 4 carbons, and the carbonyl group is on the second carbon, making it Butan-2-one.
Correct Answer:
A
— Butan-2-one
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Q. What is the IUPAC name for the compound with the formula C3H7-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Isobutyric acid
Show solution
Solution
The compound is isobutyric acid, which is a branched-chain carboxylic acid with three carbons.
Correct Answer:
D
— Isobutyric acid
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Q. What is the IUPAC name for the compound with the formula C3H7OH?
A.
Propan-1-ol
B.
Propan-2-ol
C.
Butan-1-ol
D.
Methanol
Show solution
Solution
The compound is an alcohol with three carbons and the hydroxyl group on the second carbon, hence the name is Propan-2-ol.
Correct Answer:
B
— Propan-2-ol
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Q. What is the IUPAC name for the compound with the formula C3H8?
A.
Propene
B.
Propane
C.
Propyne
D.
Cyclopropane
Show solution
Solution
C3H8 is propane, which is an alkane.
Correct Answer:
B
— Propane
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Q. What is the IUPAC name for the compound with the formula C4H10O?
A.
Butanol
B.
Butanal
C.
Ethyl methyl ether
D.
Tert-butanol
Show solution
Solution
C4H10O can be identified as an alcohol with 4 carbons, which is named Butanol.
Correct Answer:
A
— Butanol
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Q. What is the IUPAC name for the compound with the formula C4H8O?
A.
Butanal
B.
Butan-2-ol
C.
Butan-1-ol
D.
Cyclobutanol
Show solution
Solution
C4H8O can correspond to butan-2-ol, which is a secondary alcohol.
Correct Answer:
B
— Butan-2-ol
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Q. What is the IUPAC name for the compound with the formula C4H9-CHO?
A.
Butanal
B.
Pentanal
C.
Propionaldehyde
D.
Isobutyraldehyde
Show solution
Solution
The compound has four carbons and an aldehyde functional group, making it Butanal.
Correct Answer:
A
— Butanal
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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!
