Q. In the reaction 2Ag+ + Zn → 2Ag + Zn^2+, which element is oxidized? (2020)
A.
Ag
B.
Zn
C.
O
D.
None of the above
Show solution
Solution
In this reaction, zinc (Zn) is oxidized as it loses electrons to form Zn^2+.
Correct Answer:
B
— Zn
Learn More →
Q. In the reaction 2Ag⁺ + Zn → 2Ag + Zn²⁺, which species is reduced? (2023)
A.
Ag⁺
B.
Zn
C.
Ag
D.
Zn²⁺
Show solution
Solution
In this reaction, Ag⁺ gains electrons to form Ag, thus it is reduced.
Correct Answer:
A
— Ag⁺
Learn More →
Q. In the reaction 2Fe2O3 + 3C → 4Fe + 3CO2, which species is oxidized? (2019)
A.
Fe2O3
B.
C
C.
Fe
D.
CO2
Show solution
Solution
In this reaction, carbon (C) is oxidized as it loses electrons to form CO2.
Correct Answer:
B
— C
Learn More →
Q. In the reaction 2Fe²⁺ + 2e⁻ → 2Fe, what is being reduced? (2021)
A.
Fe²⁺
B.
Fe
C.
e⁻
D.
None of the above
Show solution
Solution
In this reaction, Fe²⁺ is being reduced as it gains electrons to form Fe.
Correct Answer:
A
— Fe²⁺
Learn More →
Q. In the reaction 2Fe²⁺ + 2MnO4⁻ → 2Fe³⁺ + 2Mn²⁺, what is the oxidation state change for iron? (2021)
A.
+2 to +3
B.
+3 to +2
C.
0 to +2
D.
−2 to 0
Show solution
Solution
Iron changes its oxidation state from +2 to +3, indicating that it is oxidized.
Correct Answer:
A
— +2 to +3
Learn More →
Q. In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, what is being oxidized? (2021)
A.
Fe²⁺
B.
Cl2
C.
Fe³⁺
D.
Cl⁻
Show solution
Solution
In this reaction, Fe²⁺ is being oxidized to Fe³⁺ as it loses electrons.
Correct Answer:
A
— Fe²⁺
Learn More →
Q. In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)
Show solution
Solution
Iron (Fe) is oxidized from +2 to +3 oxidation state in this reaction.
Correct Answer:
A
— Fe
Learn More →
Q. In the reaction 2MnO4- + 5C2O4^2- + 16H+ → 2Mn^2+ + 10CO2 + 8H2O, what is being oxidized? (2019)
A.
MnO4-
B.
C2O4^2-
C.
H+
D.
CO2
Show solution
Solution
C2O4^2- (oxalate ion) is being oxidized to CO2 in this reaction.
Correct Answer:
B
— C2O4^2-
Learn More →
Q. In the reaction 2MnO4^- + 5C2O4^2- + 6H+ → 2Mn^2+ + 10CO2 + 3H2O, what is the role of MnO4^-? (2023)
A.
Oxidizing agent
B.
Reducing agent
C.
Neutral agent
D.
Catalyst
Show solution
Solution
MnO4^- acts as an oxidizing agent as it gains electrons and is reduced to Mn^2+.
Correct Answer:
A
— Oxidizing agent
Learn More →
Q. In the reaction 2MnO4⁻ + 5C2O4²⁻ + 16H⁺ → 2Mn²⁺ + 10CO2 + 8H2O, which species is reduced? (2019)
A.
MnO4⁻
B.
C2O4²⁻
C.
H⁺
D.
CO2
Show solution
Solution
In this reaction, MnO4⁻ is reduced to Mn²⁺ as it gains electrons.
Correct Answer:
A
— MnO4⁻
Learn More →
Q. In the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), if H2 is removed from the system, what will happen to the equilibrium? (2022)
A.
Shift to the right
B.
Shift to the left
C.
No change
D.
Increase in temperature
Show solution
Solution
Removing H2 will shift the equilibrium to the left to produce more H2, according to Le Chatelier's principle.
Correct Answer:
B
— Shift to the left
Learn More →
Q. In the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what is the effect of increasing the concentration of CO? (2023)
A.
Shift to the right
B.
Shift to the left
C.
No change
D.
Increase in Kp
Show solution
Solution
Increasing the concentration of CO will shift the equilibrium to the right, favoring the formation of CH3OH.
Correct Answer:
A
— Shift to the right
Learn More →
Q. In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, which element is oxidized? (2022)
A.
Zn
B.
Cu²⁺
C.
Zn²⁺
D.
Cu
Show solution
Solution
Zinc (Zn) is oxidized as it loses electrons to form Zn²⁺.
Correct Answer:
A
— Zn
Learn More →
Q. In thermodynamics, the term 'adiabatic' refers to a process that: (2019)
A.
Occurs at constant temperature
B.
Occurs without heat transfer
C.
Occurs at constant pressure
D.
Occurs at constant volume
Show solution
Solution
An adiabatic process is one in which no heat is transferred to or from the system, meaning it occurs without heat exchange.
Correct Answer:
B
— Occurs without heat transfer
Learn More →
Q. In thermodynamics, the term 'enthalpy' is defined as: (2022)
A.
The total energy of a system
B.
The heat content of a system at constant pressure
C.
The work done by a system
D.
The change in internal energy
Show solution
Solution
Enthalpy is defined as the heat content of a system at constant pressure, represented as H = U + PV.
Correct Answer:
B
— The heat content of a system at constant pressure
Learn More →
Q. In thermodynamics, the term 'system' refers to: (2022)
A.
The surroundings
B.
The part of the universe under study
C.
The entire universe
D.
None of the above
Show solution
Solution
In thermodynamics, the 'system' refers to the part of the universe that is being studied, while the surroundings are everything else.
Correct Answer:
B
— The part of the universe under study
Learn More →
Q. In thermodynamics, what does the term 'enthalpy' (H) represent? (2020)
A.
Total energy of the system
B.
Energy required to break bonds
C.
Heat content of the system at constant pressure
D.
Work done by the system
Show solution
Solution
Enthalpy (H) represents the heat content of the system at constant pressure, defined as H = U + PV.
Correct Answer:
C
— Heat content of the system at constant pressure
Learn More →
Q. In thin film interference, which of the following will not affect the interference pattern? (2022)
A.
Thickness of the film
B.
Wavelength of light
C.
Angle of incidence
D.
Color of the light source
Show solution
Solution
While thickness, wavelength, and angle of incidence affect the interference pattern, the color of the light source does not directly affect the pattern itself.
Correct Answer:
D
— Color of the light source
Learn More →
Q. In which case does total internal reflection occur? (2022)
A.
When light travels from a denser to a rarer medium
B.
When light travels from a rarer to a denser medium
C.
At the critical angle
D.
None of the above
Show solution
Solution
Total internal reflection occurs when light travels from a denser medium to a rarer medium at an angle greater than the critical angle.
Correct Answer:
A
— When light travels from a denser to a rarer medium
Learn More →
Q. In which direction does the magnetic field point inside a solenoid carrying current? (2023)
A.
From south to north
B.
From north to south
C.
Perpendicular to the axis
D.
It is zero
Show solution
Solution
Inside a solenoid, the magnetic field lines run from the north pole to the south pole, similar to a bar magnet.
Correct Answer:
B
— From north to south
Learn More →
Q. In which group of plants do we find true roots, stems, and leaves? (2021)
A.
Bryophytes
B.
Pteridophytes
C.
Algae
D.
Fungi
Show solution
Solution
Pteridophytes possess true roots, stems, and leaves, distinguishing them from bryophytes.
Correct Answer:
B
— Pteridophytes
Learn More →
Q. In which group of plants do you find the presence of true leaves, stems, and roots? (2020)
A.
Bryophytes
B.
Pteridophytes
C.
Gymnosperms
D.
Algae
Show solution
Solution
Pteridophytes are the first group of plants that possess true leaves, stems, and roots.
Correct Answer:
B
— Pteridophytes
Learn More →
Q. In which group of plants do you find the presence of xylem and phloem? (2020)
A.
Algae
B.
Mosses
C.
Ferns
D.
All of the above
Show solution
Solution
Ferns are the first group of plants that possess both xylem and phloem, which are essential for transport.
Correct Answer:
C
— Ferns
Learn More →
Q. In which group of plants do you find true roots, stems, and leaves? (2020)
A.
Bryophytes
B.
Pteridophytes
C.
Gymnosperms
D.
All of the above
Show solution
Solution
Gymnosperms and pteridophytes both have true roots, stems, and leaves, while bryophytes do not.
Correct Answer:
D
— All of the above
Learn More →
Q. In which kingdom would you classify mushrooms? (2022)
A.
Animalia
B.
Plantae
C.
Fungi
D.
Protista
Show solution
Solution
Mushrooms are classified in the kingdom Fungi, which includes all fungi, including yeasts and molds.
Correct Answer:
C
— Fungi
Learn More →
Q. In which of the following conditions does the entropy of a system increase? (2022)
A.
When a gas is compressed
B.
When a solid melts
C.
When a liquid freezes
D.
When a gas is cooled
Show solution
Solution
The entropy of a system increases when a solid melts into a liquid, as the disorder of the system increases.
Correct Answer:
B
— When a solid melts
Learn More →
Q. In which of the following does external fertilization occur? (2019)
A.
Frogs
B.
Humans
C.
Birds
D.
Reptiles
Show solution
Solution
Frogs typically exhibit external fertilization, where eggs and sperm are released into the water.
Correct Answer:
A
— Frogs
Learn More →
Q. In which of the following organisms does binary fission occur? (2019)
A.
Yeast
B.
Amoeba
C.
Hydra
D.
Starfish
Show solution
Solution
Binary fission is a form of asexual reproduction commonly seen in unicellular organisms like Amoeba.
Correct Answer:
B
— Amoeba
Learn More →
Q. In which of the following organisms does external fertilization occur? (2021)
A.
Frog
B.
Human
C.
Dog
D.
Cat
Show solution
Solution
Frogs exhibit external fertilization where eggs and sperm are released into the water.
Correct Answer:
A
— Frog
Learn More →
Q. In which of the following organisms does external fertilization typically occur? (2019)
A.
Humans
B.
Frogs
C.
Birds
D.
Reptiles
Show solution
Solution
Frogs typically exhibit external fertilization, where eggs and sperm are released into the water.
Correct Answer:
B
— Frogs
Learn More →
Showing 511 to 540 of 2984 (100 Pages)
NEET MCQ & Objective Questions
The National Eligibility cum Entrance Test (NEET) is a crucial examination for aspiring medical students in India. Scoring well in NEET can open doors to prestigious medical colleges, making it essential for students to prepare effectively. Practicing NEET MCQs and objective questions not only enhances understanding but also boosts confidence, ensuring you are well-prepared for the exam. Engaging with practice questions helps identify important topics and improves your ability to tackle various question formats.
What You Will Practise Here
Human Anatomy and Physiology
Biochemistry and Molecular Biology
Genetics and Evolution
Plant and Animal Physiology
Ecology and Environment
Physics Concepts Relevant to Biology
Important NEET questions on Chemical Bonding and Reactions
Exam Relevance
NEET is aligned with the syllabus of CBSE and various State Boards, ensuring that the topics covered are relevant for both school exams and competitive tests like JEE. Common question patterns include multiple-choice questions that assess conceptual understanding and application of knowledge. By focusing on NEET objective questions, students can familiarize themselves with the exam format and improve their time management skills during the actual test.
Common Mistakes Students Make
Misinterpreting questions due to lack of careful reading.
Overlooking the importance of diagrams and visual aids in biology.
Neglecting to review basic concepts that are foundational for advanced topics.
Confusing similar terms and definitions, especially in biochemistry.
FAQs
Question: How can I improve my NEET MCQ solving skills?Answer: Regular practice with NEET MCQ questions and reviewing explanations for both correct and incorrect answers can significantly enhance your skills.
Question: Are there specific topics I should focus on for NEET preparation?Answer: Yes, focus on high-weightage topics like Human Physiology, Genetics, and Ecology, as they frequently appear in exams.
Start your journey towards success by solving NEET practice MCQs today! Test your understanding, identify your strengths and weaknesses, and prepare effectively for your upcoming exams.
