Q. What is the main product when ethene reacts with water in the presence of an acid? (2023)
A.
Ethanol
B.
Ethane
C.
Acetic acid
D.
Ethylene glycol
Show solution
Solution
The reaction of ethene with water in the presence of an acid yields ethanol.
Correct Answer:
A
— Ethanol
Learn More →
Q. What is the main product when hydrogen reacts with oxygen? (2019)
A.
Water
B.
Hydrogen peroxide
C.
Ozone
D.
Hydroxide
Show solution
Solution
When hydrogen reacts with oxygen, the main product formed is water (H2O).
Correct Answer:
A
— Water
Learn More →
Q. What is the main product when propan-2-one is treated with sodium borohydride? (2023)
A.
Propan-1-ol
B.
Propan-2-ol
C.
Propan-3-ol
D.
No reaction
Show solution
Solution
Sodium borohydride reduces propan-2-one to propan-2-ol, which is a secondary alcohol.
Correct Answer:
B
— Propan-2-ol
Learn More →
Q. What is the main product when propanal is treated with sodium bisulfite? (2019)
A.
Sodium propanoate
B.
Propyl sulfonate
C.
Propane-1,2-diol
D.
A bisulfite adduct
Show solution
Solution
Propanal reacts with sodium bisulfite to form a bisulfite adduct, which is a characteristic reaction of aldehydes.
Correct Answer:
D
— A bisulfite adduct
Learn More →
Q. What is the main purpose of a choke in an AC circuit? (2022)
A.
To increase current
B.
To decrease current
C.
To store energy
D.
To convert AC to DC
Show solution
Solution
A choke is used to decrease current in an AC circuit by providing inductive reactance.
Correct Answer:
B
— To decrease current
Learn More →
Q. What is the main purpose of a Punnett square? (2020)
A.
To determine the phenotype
B.
To predict genetic variation
C.
To identify alleles
D.
To analyze pedigrees
Show solution
Solution
A Punnett square is used to predict the genetic variation and possible genotypes of offspring from a genetic cross.
Correct Answer:
B
— To predict genetic variation
Learn More →
Q. What is the main purpose of amniotic fluid? (2022)
A.
Protection of the fetus
B.
Nourishment of the fetus
C.
Gas exchange
D.
Hormonal regulation
Show solution
Solution
Amniotic fluid serves to protect the fetus by cushioning it from physical shocks and providing a stable environment.
Correct Answer:
A
— Protection of the fetus
Learn More →
Q. What is the main purpose of classification in biology? (2019)
A.
To identify organisms
B.
To understand evolutionary relationships
C.
To simplify the study of organisms
D.
All of the above
Show solution
Solution
The main purpose of classification in biology is to identify organisms, understand evolutionary relationships, and simplify the study of organisms.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the main purpose of family planning? (2021)
A.
To increase population growth
B.
To allow couples to decide the number and spacing of children
C.
To promote early childbirth
D.
To discourage contraceptive use
Show solution
Solution
Family planning enables couples to make informed decisions about the number and spacing of their children.
Correct Answer:
B
— To allow couples to decide the number and spacing of children
Learn More →
Q. What is the main purpose of reproduction in organisms? (2020)
A.
To maintain homeostasis
B.
To produce energy
C.
To ensure species survival
D.
To grow and develop
Show solution
Solution
The main purpose of reproduction is to ensure the survival of a species by producing new individuals.
Correct Answer:
C
— To ensure species survival
Learn More →
Q. What is the main purpose of respiration in plants? (2023)
A.
To produce glucose
B.
To release energy
C.
To absorb water
D.
To synthesize proteins
Show solution
Solution
The main purpose of respiration in plants is to release energy from glucose, which is essential for various cellular processes.
Correct Answer:
B
— To release energy
Learn More →
Q. What is the main purpose of sexual reproduction? (2020)
A.
To produce more offspring
B.
To create genetic diversity
C.
To ensure survival of the species
D.
To reduce competition
Show solution
Solution
The main purpose of sexual reproduction is to create genetic diversity, which can improve adaptability.
Correct Answer:
B
— To create genetic diversity
Learn More →
Q. What is the main purpose of the acrosome in sperm? (2022)
A.
To provide energy
B.
To penetrate the egg
C.
To store genetic material
D.
To aid in motility
Show solution
Solution
The acrosome contains enzymes that help the sperm penetrate the outer layers of the egg during fertilization.
Correct Answer:
B
— To penetrate the egg
Learn More →
Q. What is the main purpose of the amniotic fluid? (2023)
A.
Protection of the fetus
B.
Nourishment of the fetus
C.
Gas exchange
D.
Hormonal regulation
Show solution
Solution
The main purpose of the amniotic fluid is to protect the fetus by cushioning it from physical shocks.
Correct Answer:
A
— Protection of the fetus
Learn More →
Q. What is the main purpose of the G1 phase in the cell cycle? (2022)
A.
DNA replication
B.
Cell growth and preparation for DNA synthesis
C.
Chromosome separation
D.
Cell division
Show solution
Solution
The G1 phase is primarily for cell growth and preparation for DNA synthesis.
Correct Answer:
B
— Cell growth and preparation for DNA synthesis
Learn More →
Q. What is the main purpose of the menstrual cycle? (2023)
A.
To prepare the body for pregnancy
B.
To produce sperm
C.
To regulate hormone levels
D.
To eliminate waste
Show solution
Solution
The main purpose of the menstrual cycle is to prepare the female body for potential pregnancy each month.
Correct Answer:
A
— To prepare the body for pregnancy
Learn More →
Q. What is the main purpose of the S phase in the cell cycle? (2022)
A.
Cell growth
B.
DNA replication
C.
Cell division
D.
Protein synthesis
Show solution
Solution
The S phase is specifically for DNA replication, ensuring that each daughter cell receives a complete set of chromosomes.
Correct Answer:
B
— DNA replication
Learn More →
Q. What is the main purpose of using biopesticides in agriculture? (2023)
A.
Increase crop yield
B.
Reduce chemical pesticide use
C.
Enhance soil fertility
D.
Improve water retention
Show solution
Solution
Biopesticides are used to reduce the reliance on chemical pesticides, promoting a more sustainable approach to pest management.
Correct Answer:
B
— Reduce chemical pesticide use
Learn More →
Q. What is the main purpose of using bioreactors in biotechnology? (2023)
A.
To produce energy
B.
To grow microorganisms or cells
C.
To purify proteins
D.
To store genetic material
Show solution
Solution
Bioreactors are designed to provide a controlled environment for the growth of microorganisms or cells for the production of bioproducts.
Correct Answer:
B
— To grow microorganisms or cells
Learn More →
Q. What is the main purpose of using genetically modified crops? (2023)
A.
To produce more flowers
B.
To enhance flavor
C.
To improve resistance to diseases
D.
To reduce labor costs
Show solution
Solution
Genetically modified crops are primarily developed to improve resistance to diseases, pests, and environmental conditions.
Correct Answer:
C
— To improve resistance to diseases
Learn More →
Q. What is the main purpose of using significant figures in measurements? (2019)
A.
To increase the number of digits
B.
To indicate precision
C.
To simplify calculations
D.
To convert units
Show solution
Solution
Significant figures indicate the precision of a measurement, reflecting the certainty of the digits.
Correct Answer:
B
— To indicate precision
Learn More →
Q. What is the main reason for the stability of the electron in an atom? (2019)
A.
Electrostatic attraction to the nucleus
B.
High energy levels
C.
Quantum tunneling
D.
Magnetic forces
Show solution
Solution
The stability of the electron in an atom is primarily due to the electrostatic attraction between the negatively charged electrons and the positively charged nucleus.
Correct Answer:
A
— Electrostatic attraction to the nucleus
Learn More →
Q. What is the main reason for the stability of the electron orbits in an atom according to the Bohr model? (2019)
A.
Electrons are stationary.
B.
Electrons are attracted to the nucleus.
C.
Electrons have quantized energy levels.
D.
Electrons are repelled by each other.
Show solution
Solution
In the Bohr model, electrons occupy quantized energy levels, which leads to stable orbits around the nucleus.
Correct Answer:
C
— Electrons have quantized energy levels.
Learn More →
Q. What is the main reproductive structure of angiosperms? (2021)
A.
Cone
B.
Flower
C.
Sporangium
D.
Thallus
Show solution
Solution
The main reproductive structure of angiosperms is the flower, which facilitates reproduction through pollination.
Correct Answer:
B
— Flower
Learn More →
Q. What is the main role of dietary fiber in human health? (2021)
A.
Increase cholesterol
B.
Aid digestion
C.
Provide energy
D.
Enhance taste
Show solution
Solution
Dietary fiber aids digestion by promoting regular bowel movements and preventing constipation.
Correct Answer:
B
— Aid digestion
Learn More →
Q. What is the main site of nutrient absorption in the digestive system? (2020)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
The small intestine is the main site for the absorption of nutrients.
Correct Answer:
C
— Small intestine
Learn More →
Q. What is the main site of protein digestion in the digestive system? (2021)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
Protein digestion primarily occurs in the stomach, where pepsin breaks down proteins into peptides.
Correct Answer:
B
— Stomach
Learn More →
Q. What is the main site of protein digestion? (2021)
A.
Mouth
B.
Stomach
C.
Small intestine
D.
Large intestine
Show solution
Solution
Protein digestion begins in the stomach, where pepsin breaks down proteins into peptides.
Correct Answer:
B
— Stomach
Learn More →
Q. What is the main source of omega-3 fatty acids? (2021)
A.
Fish oil
B.
Butter
C.
Coconut oil
D.
Olive oil
Show solution
Solution
Fish oil is a rich source of omega-3 fatty acids, which are important for heart health and brain function.
Correct Answer:
A
— Fish oil
Learn More →
Q. What is the main source of ozone depletion? (2021)
A.
Carbon dioxide
B.
Chlorofluorocarbons (CFCs)
C.
Methane
D.
Nitrous oxide
Show solution
Solution
Chlorofluorocarbons (CFCs) are the primary substances responsible for ozone layer depletion.
Correct Answer:
B
— Chlorofluorocarbons (CFCs)
Learn More →
Showing 1111 to 1140 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.
