Q. Which compound is primarily responsible for the sour taste of vinegar? (2019)
A.
Acetic acid
B.
Citric acid
C.
Lactic acid
D.
Formic acid
Show solution
Solution
Acetic acid is the main component of vinegar, giving it its characteristic sour taste.
Correct Answer:
A
— Acetic acid
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Q. Which gas is evolved when an acid reacts with a carbonate? (2022)
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Solution
When an acid reacts with a carbonate, carbon dioxide (CO2) gas is evolved.
Correct Answer:
C
— CO2
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Q. Which haloalkane is most likely to undergo elimination reactions? (2023)
A.
1-bromopropane
B.
2-bromobutane
C.
3-bromobutane
D.
Bromobenzene
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Solution
3-bromobutane is more likely to undergo elimination reactions due to the presence of a tertiary carbon.
Correct Answer:
C
— 3-bromobutane
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Q. Which isotope of hydrogen is also known as deuterium? (2021)
A.
Protium
B.
Tritium
C.
Hydrogen-1
D.
Hydrogen-2
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Solution
Deuterium is the isotope of hydrogen with one neutron, also referred to as Hydrogen-2.
Correct Answer:
D
— Hydrogen-2
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Q. Which isotope of hydrogen is also known as heavy hydrogen? (2020)
A.
Protium
B.
Deuterium
C.
Tritium
D.
Hydrogen-1
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Solution
Deuterium is known as heavy hydrogen because it has one neutron in addition to the single proton.
Correct Answer:
B
— Deuterium
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Q. Which of the following alcohols is most soluble in water? (2022)
A.
1-butanol
B.
2-butanol
C.
3-butanol
D.
Cyclohexanol
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Solution
2-butanol has a higher solubility in water due to its ability to form hydrogen bonds more effectively than the others.
Correct Answer:
B
— 2-butanol
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Q. Which of the following alkali metals is most reactive with water? (2023)
A.
Lithium
B.
Sodium
C.
Potassium
D.
Rubidium
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Solution
Potassium (K) is more reactive with water than Sodium (Na) and Lithium (Li).
Correct Answer:
C
— Potassium
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Q. Which of the following alkaline earth metals has the highest melting point? (2019)
A.
Beryllium
B.
Magnesium
C.
Calcium
D.
Strontium
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Solution
Beryllium has the highest melting point among the alkaline earth metals.
Correct Answer:
A
— Beryllium
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Q. Which of the following alkaline earth metals is most reactive? (2020)
A.
Beryllium
B.
Calcium
C.
Strontium
D.
Barium
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Solution
Barium is the most reactive alkaline earth metal due to its larger atomic size and lower ionization energy.
Correct Answer:
D
— Barium
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Q. Which of the following alkaline earth metals is the least reactive? (2022)
A.
Barium
B.
Calcium
C.
Magnesium
D.
Strontium
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Solution
Magnesium (Mg) is the least reactive among the alkaline earth metals due to its higher ionization energy compared to the others.
Correct Answer:
C
— Magnesium
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Q. Which of the following alkaline earth metals reacts vigorously with water? (2019)
A.
Beryllium
B.
Calcium
C.
Magnesium
D.
Strontium
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Solution
Calcium reacts vigorously with water to form calcium hydroxide and hydrogen gas.
Correct Answer:
B
— Calcium
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Q. Which of the following amino acids is essential? (2023)
A.
Glycine
B.
Alanine
C.
Leucine
D.
Serine
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Solution
Leucine is an essential amino acid that must be obtained through diet.
Correct Answer:
C
— Leucine
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Q. Which of the following best describes the behavior of gas particles? (2019)
A.
They are tightly packed and vibrate in place.
B.
They are loosely packed and can slide past each other.
C.
They are far apart and move freely.
D.
They are in a fixed position.
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Solution
Gas particles are far apart and move freely, allowing them to fill the container they are in.
Correct Answer:
C
— They are far apart and move freely.
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Q. Which of the following best describes the behavior of gases according to the kinetic molecular theory? (2019)
A.
Particles are tightly packed
B.
Particles are in fixed positions
C.
Particles are in constant random motion
D.
Particles have strong intermolecular forces
Show solution
Solution
According to the kinetic molecular theory, gas particles are in constant random motion.
Correct Answer:
C
— Particles are in constant random motion
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Q. Which of the following biomolecules is primarily responsible for genetic information? (2021)
A.
Proteins
B.
Carbohydrates
C.
Nucleic acids
D.
Lipids
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Solution
Nucleic acids, such as DNA and RNA, carry genetic information.
Correct Answer:
C
— Nucleic acids
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Q. Which of the following carboxylic acids has a pungent odor? (2022)
A.
Acetic acid
B.
Butanoic acid
C.
Formic acid
D.
Propanoic acid
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Solution
Butanoic acid has a pungent odor, often described as rancid butter.
Correct Answer:
B
— Butanoic acid
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Q. Which of the following carboxylic acids has the highest boiling point? (2020)
A.
Formic acid
B.
Acetic acid
C.
Propanoic acid
D.
Butanoic acid
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Solution
Butanoic acid has the highest boiling point due to its longer carbon chain and greater molecular weight.
Correct Answer:
D
— Butanoic acid
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Q. Which of the following changes will increase the yield of products in an endothermic reaction at equilibrium? (2023)
A.
Increase temperature
B.
Decrease pressure
C.
Increase concentration of products
D.
Add a catalyst
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Solution
Increasing the temperature for an endothermic reaction shifts the equilibrium to the right, favoring the formation of products.
Correct Answer:
A
— Increase temperature
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Q. Which of the following changes will shift the equilibrium to the right for the reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g)? (2022)
A.
Increase in SO2
B.
Increase in temperature
C.
Decrease in pressure
D.
Increase in O2
Show solution
Solution
According to Le Chatelier's principle, increasing the concentration of a reactant (O2 in this case) will shift the equilibrium to the right, favoring the formation of products.
Correct Answer:
D
— Increase in O2
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Q. Which of the following compounds can be classified as a secondary amine? (2022)
A.
Methylamine
B.
Dimethylamine
C.
Ethylamine
D.
Aniline
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Solution
Dimethylamine is a secondary amine as it has two alkyl groups attached to the nitrogen atom.
Correct Answer:
B
— Dimethylamine
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Q. Which of the following compounds can be oxidized to form a ketone? (2022)
A.
2-Propanol
B.
Ethanol
C.
Methanol
D.
Butanoic acid
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Solution
2-Propanol can be oxidized to form acetone, which is a ketone.
Correct Answer:
A
— 2-Propanol
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Q. Which of the following compounds can be prepared by the reduction of nitrobenzene? (2022)
A.
Aniline
B.
Benzylamine
C.
Ethylamine
D.
Methylamine
Show solution
Solution
Nitrobenzene can be reduced to aniline using reducing agents like Sn/HCl.
Correct Answer:
A
— Aniline
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Q. Which of the following compounds can be used to distinguish between primary, secondary, and tertiary amines? (2023)
A.
Bromine water
B.
Nitrous acid
C.
Sodium hydroxide
D.
Hydrochloric acid
Show solution
Solution
Nitrous acid can be used to distinguish between primary, secondary, and tertiary amines, as it reacts differently with each type.
Correct Answer:
B
— Nitrous acid
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Q. Which of the following compounds contains a carboxylic acid functional group? (2021)
A.
C2H5OH
B.
C3H6O
C.
C2H4COOH
D.
C4H10
Show solution
Solution
C2H4COOH (acetic acid) contains the carboxylic acid functional group (-COOH).
Correct Answer:
C
— C2H4COOH
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Q. Which of the following compounds contains a coordinate bond? (2023)
A.
NH3
B.
H2O
C.
CO
D.
NaCl
Show solution
Solution
Carbon monoxide (CO) contains a coordinate bond between carbon and oxygen.
Correct Answer:
C
— CO
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Q. Which of the following compounds contains a p-block element in its highest oxidation state? (2023)
A.
SO2
B.
PCl5
C.
Na2O
D.
MgCl2
Show solution
Solution
In PCl5, phosphorus is in its highest oxidation state of +5.
Correct Answer:
B
— PCl5
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Q. Which of the following compounds contains hydrogen in a negative oxidation state? (2021)
A.
HCl
B.
NaH
C.
H2O
D.
NH3
Show solution
Solution
In sodium hydride (NaH), hydrogen has an oxidation state of -1.
Correct Answer:
B
— NaH
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Q. Which of the following compounds has a triple bond? (2022)
A.
Ethylene
B.
Acetylene
C.
Propylene
D.
Butane
Show solution
Solution
Acetylene (C2H2) contains a triple bond between the two carbon atoms.
Correct Answer:
B
— Acetylene
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Q. Which of the following compounds is a branched alkane? (2022)
A.
C5H12
B.
C4H10
C.
C3H8
D.
C2H6
Show solution
Solution
C5H12 can exist as both straight-chain (pentane) and branched (isopentane) forms.
Correct Answer:
A
— C5H12
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Q. Which of the following compounds is a common oxidation state of vanadium? (2022)
A.
V2O5
B.
VO
C.
V2O3
D.
All of the above
Show solution
Solution
All the listed compounds represent common oxidation states of vanadium: +5 in V2O5, +2 in VO, and +3 in V2O3.
Correct Answer:
D
— All of the above
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Showing 361 to 390 of 626 (21 Pages)
Chemistry (NEET) MCQ & Objective Questions
Chemistry is a crucial subject for students preparing for NEET and other competitive exams in India. Mastering Chemistry (NEET) is essential not only for scoring well but also for building a strong foundation in scientific concepts. Practicing MCQs and objective questions can significantly enhance your exam preparation, allowing you to tackle important questions with confidence.
What You Will Practise Here
Fundamental concepts of Physical Chemistry
Organic Chemistry reactions and mechanisms
Inorganic Chemistry periodic table trends
Stoichiometry and chemical calculations
Equilibrium and thermodynamics principles
Important definitions and key formulas
Diagrams related to chemical structures and reactions
Exam Relevance
Chemistry is a significant part of the syllabus for CBSE, State Boards, NEET, and JEE. In these exams, questions often focus on conceptual understanding and application of theories. You can expect a mix of direct questions, application-based problems, and conceptual MCQs that test your knowledge of key topics. Familiarity with common question patterns will help you navigate the exam more effectively.
Common Mistakes Students Make
Overlooking the importance of units in calculations
Confusing similar concepts in Organic Chemistry
Neglecting to balance chemical equations correctly
Misinterpreting questions that involve multiple steps
Failing to memorize essential definitions and formulas
FAQs
Question: What are the best ways to prepare for Chemistry (NEET) MCQs?Answer: Regular practice of MCQs, understanding core concepts, and revising key formulas are effective strategies.
Question: How can I improve my speed in solving Chemistry (NEET) objective questions?Answer: Time yourself while practicing and focus on familiarizing yourself with common question types.
Start solving practice MCQs today to test your understanding and boost your confidence in Chemistry (NEET). Remember, consistent practice is the key to success!