Q. Which of the following is a primary alcohol?
A.
1-butanol
B.
2-butanol
C.
tert-butanol
D.
cyclohexanol
Show solution
Solution
1-butanol has the hydroxyl group attached to a primary carbon atom.
Correct Answer:
A
— 1-butanol
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Q. Which of the following is a primary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(C2H5)3N
D.
C6H5NH2
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Solution
CH3NH2 is a primary amine as it has one alkyl group attached to the nitrogen atom.
Correct Answer:
A
— CH3NH2
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Q. Which of the following is a primary cell?
A.
Lead-acid battery
B.
Nickel-cadmium battery
C.
Zinc-carbon battery
D.
Lithium-ion battery
Show solution
Solution
The zinc-carbon battery is a primary cell, while the others are secondary cells.
Correct Answer:
C
— Zinc-carbon battery
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Q. Which of the following is a primary haloalkane?
A.
1-bromobutane
B.
2-bromobutane
C.
3-bromobutane
D.
Bromobenzene
Show solution
Solution
1-bromobutane is a primary haloalkane as the carbon attached to the halogen is bonded to only one other carbon.
Correct Answer:
A
— 1-bromobutane
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Q. Which of the following is a primary structure of proteins?
A.
Sequence of amino acids
B.
Alpha-helix structure
C.
Beta-pleated sheet
D.
Quaternary structure
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Solution
The primary structure of proteins refers to the linear sequence of amino acids linked by peptide bonds.
Correct Answer:
A
— Sequence of amino acids
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Q. Which of the following is a property of alkali metals?
A.
They are good conductors of electricity
B.
They are non-metals
C.
They have high electronegativity
D.
They are found in nature as free elements
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Solution
Alkali metals are good conductors of electricity due to their free-moving electrons.
Correct Answer:
A
— They are good conductors of electricity
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Q. Which of the following is a property of alkaline earth metals?
A.
They are highly reactive with water
B.
They have a higher density than alkali metals
C.
They form acidic oxides
D.
They have a full outer shell
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Solution
Alkaline earth metals have a higher density than alkali metals.
Correct Answer:
B
— They have a higher density than alkali metals
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Q. Which of the following is a property of alkanes?
A.
They are polar
B.
They are soluble in water
C.
They are non-polar
D.
They have high reactivity
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Solution
Alkanes are non-polar molecules and are generally insoluble in water.
Correct Answer:
C
— They are non-polar
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Q. Which of the following is a property of alkenes?
A.
Saturated
B.
Unsaturated
C.
Non-polar
D.
Inert
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Solution
Alkenes are unsaturated hydrocarbons due to the presence of at least one double bond.
Correct Answer:
B
— Unsaturated
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Q. Which of the following is a property of alkynes?
A.
They are saturated
B.
They contain a triple bond
C.
They are less reactive than alkenes
D.
They have the formula CnH2n
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Solution
Alkynes contain at least one triple bond between carbon atoms.
Correct Answer:
B
— They contain a triple bond
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Q. Which of the following is a property of aromatic compounds?
A.
High reactivity
B.
Planar structure
C.
Non-polar nature
D.
All of the above
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Solution
Aromatic compounds are characterized by a planar structure and exhibit unique stability due to resonance, but they are generally less reactive than alkenes.
Correct Answer:
B
— Planar structure
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Q. Which of the following is a property of aromatic hydrocarbons?
A.
They are always saturated
B.
They have a pleasant smell
C.
They contain a benzene ring
D.
They are non-polar
Show solution
Solution
Aromatic hydrocarbons contain a benzene ring.
Correct Answer:
C
— They contain a benzene ring
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Q. Which of the following is a property of carboxylic acids?
A.
They are basic
B.
They have high boiling points
C.
They are insoluble in water
D.
They do not form hydrogen bonds
Show solution
Solution
Carboxylic acids have high boiling points due to hydrogen bonding.
Correct Answer:
B
— They have high boiling points
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Q. Which of the following is a property of cycloalkanes?
A.
They are always aromatic
B.
They have a ring structure
C.
They are unsaturated
D.
They contain only single bonds
Show solution
Solution
Cycloalkanes have a ring structure and can be saturated or unsaturated depending on the number of hydrogen atoms.
Correct Answer:
B
— They have a ring structure
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Q. Which of the following is a property of diatomic hydrogen (H2)?
A.
It is a liquid at room temperature
B.
It is highly flammable
C.
It has a high density
D.
It is a good conductor of electricity
Show solution
Solution
Diatomic hydrogen (H2) is highly flammable and can easily ignite in the presence of oxygen.
Correct Answer:
B
— It is highly flammable
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Q. Which of the following is a property of elastomers?
A.
Brittle
B.
Rigid
C.
Elastic
D.
Insoluble
Show solution
Solution
Elastomers are known for their elastic properties, allowing them to stretch and return to their original shape.
Correct Answer:
C
— Elastic
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Q. Which of the following is a property of group 13 elements?
A.
Form anions
B.
Form covalent compounds
C.
High ionization energy
D.
High electronegativity
Show solution
Solution
Group 13 elements typically form covalent compounds due to their electron configuration.
Correct Answer:
B
— Form covalent compounds
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Q. Which of the following is a property of group 14 elements?
A.
Forming ionic bonds
B.
Forming covalent bonds
C.
High reactivity
D.
Low melting points
Show solution
Solution
Group 14 elements typically form covalent bonds due to their tetravalent nature.
Correct Answer:
B
— Forming covalent bonds
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Q. Which of the following is a property of group 14 p-block elements?
A.
Forming ionic bonds
B.
Forming covalent bonds
C.
High electronegativity
D.
Low melting points
Show solution
Solution
Group 14 p-block elements typically form covalent bonds due to their valence electron configuration.
Correct Answer:
B
— Forming covalent bonds
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Q. Which of the following is a property of group 15 elements?
A.
Forming diatomic molecules
B.
High ionization energies
C.
Forming ionic bonds
D.
Exist in multiple allotropes
Show solution
Solution
Group 15 elements, such as phosphorus, exist in multiple allotropes.
Correct Answer:
D
— Exist in multiple allotropes
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Q. Which of the following is a property of group 17 elements?
A.
They are all gases
B.
They are all metals
C.
They are highly electronegative
D.
They have low ionization energies
Show solution
Solution
Group 17 elements, also known as halogens, are highly electronegative.
Correct Answer:
C
— They are highly electronegative
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Q. Which of the following is a property of halogens?
A.
Good conductors of electricity
B.
Diatomic molecules
C.
High melting points
D.
All are gases at room temperature
Show solution
Solution
Halogens exist as diatomic molecules (e.g., Cl2, F2) in their elemental form.
Correct Answer:
B
— Diatomic molecules
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Q. Which of the following is a property of heavy water (D2O)?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
Show solution
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer:
B
— It has a higher boiling point than regular water
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Q. Which of the following is a property of heavy water?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
Show solution
Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer:
B
— It has a higher boiling point than regular water
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Q. Which of the following is a property of hydrogen chloride (HCl)?
A.
It is a gas at room temperature
B.
It is a strong base
C.
It is insoluble in water
D.
It has a high boiling point
Show solution
Solution
Hydrogen chloride (HCl) is a gas at room temperature and is highly soluble in water.
Correct Answer:
A
— It is a gas at room temperature
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Q. Which of the following is a property of hydrogen chloride gas?
A.
It is a strong base
B.
It is a colorless gas
C.
It is insoluble in water
D.
It is a non-polar molecule
Show solution
Solution
Hydrogen chloride (HCl) is a colorless gas that is soluble in water.
Correct Answer:
B
— It is a colorless gas
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Q. Which of the following is a property of hydrogen gas?
A.
It is a good conductor of electricity
B.
It is colorless and odorless
C.
It is denser than air
D.
It supports combustion
Show solution
Solution
Hydrogen gas is colorless and odorless.
Correct Answer:
B
— It is colorless and odorless
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Q. Which of the following is a property of hydrogen?
A.
It is a metal
B.
It is a non-metal
C.
It is a noble gas
D.
It is a liquid at room temperature
Show solution
Solution
Hydrogen is classified as a non-metal.
Correct Answer:
B
— It is a non-metal
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Q. Which of the following is a property of ionic compounds?
A.
They have low melting points.
B.
They conduct electricity in solid state.
C.
They are soluble in water.
D.
They are malleable.
Show solution
Solution
Ionic compounds are generally soluble in water due to the strong interactions between ions and water molecules.
Correct Answer:
C
— They are soluble in water.
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Q. Which of the following is a property of lanthanide contraction?
A.
Increase in atomic size
B.
Decrease in ionization energy
C.
Increase in electronegativity
D.
Decrease in atomic radius
Show solution
Solution
Lanthanide contraction refers to the decrease in atomic radius across the lanthanide series due to poor shielding of f-electrons.
Correct Answer:
D
— Decrease in atomic radius
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Showing 2221 to 2250 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!
