datavorous/entrance-exam-dataset huggingface dataset:
Which of the following base-pairing rules is correct?

Options:
A Adenine with guanine and thymine with cytosine
B DNA base pairing is non-specific
C Adenine with cytosine and guanine with thymine
D Adenine with thymine and guanine with cytosine

The correct answer is:
Adenine with thymine and guanine with cytosine

Solution:
According to Chargaff's base pairing rule, in a double stranded DNA a double ringed purine always pairs with single ringed pyrimidine. Adenine pairs with Thymine by 2 hydrogen bonds and Guanine pairs with cytosine by 3 hydrogen bonds.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following bases is not present in DNA?

Options:
A Adenine
B Uracil
C Cytosine
D Guanine

The correct answer is:
Uracil

Solution:
The bases present in DNA are: Adenine, Guanine, Cytosine and Thymine. Hence Uracil is not present in D.N.A. Uracil is present in R.N.A.

Topic: Chemistry, Biomolecules, NEET
Which of the following bases is unique to RNA and not found in DNA?

Options:
A Adenine (
A)
B Guanine (G)
C Cytosine (
C)
D Uracil (U)

The correct answer is:
Uracil (U)

Solution:
Uracil is a base that is unique to RNA and is not found in DNA.

Topic: Chemistry, Biomolecules, NEET
Which of the following belongs to Rhodophyta?

Options:
A Polysiphonia
B Sphagnum
C Polytrichum
D Dictyota

The correct answer is:
Polysiphonia

Solution:
Polysiphonia is a species of red algae. Sphagnum includes members known as peat mosses. Polytrichum is a genus of the mosses which contain members commonly known as the hair mosses. Funaria are mosses belonging to the family Funariaceae.

Topic: Biology, Plant Kingdom, NEET
Which of the following best defines a polygenic trait?

Options:
A A trait controlled by a single gene
B A trait with distinct alternate forms
C A trait controlled by multiple genes
D A trait that is not affected by the environment

The correct answer is:
A trait controlled by multiple genes

Solution:
A polygenic trait is a trait that is controlled by multiple genes.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following best describes a spontaneous process in a closed system?

Options:
A A process that always occurs rapidly.
B A process that occurs without any change in energy.
C A process that occurs without the assistance of an external agency and tends to increase the system's entropy.
D A process that can be reversed by some external agency.

The correct answer is:
A process that occurs without the assistance of an external agency and tends to increase the system's entropy.

Solution:
A spontaneous process in a closed system occurs without the need for external assistance and tends to increase the system's entropy, making it less predictable and more disordered.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following best describes an ionic bond?

Options:
A A bond formed when two atoms share electrons equally.
B A bond formed when two atoms share electrons unequally.
C A bond formed when two atoms transfer electrons from one to another.
D A bond formed when two atoms do not share electrons.

The correct answer is:
A bond formed when two atoms transfer electrons from one to another.

Solution:
Correct Option is : (C)
A bond formed when two atoms transfer electrons from one to another.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following best describes how Aristotle divided animals?

Options:
A By size
B By habitat
C By the presence of red blood
D By their ability to fly

The correct answer is:
By the presence of red blood

Solution:
Aristotle divided animals into two groups based on whether they had red blood or not.

Topic: Biology, Biological Classification, NEET
Which of the following best describes Mendel's approach to explaining biological phenomena?

Options:
A He used mathematics to explain biological phenomena
B He relied on microscopy to explain biological phenomena
C He used experimentation to explain biological phenomena
D He used qualitative descriptions to explain biological phenomena

The correct answer is:
He used mathematics to explain biological phenomena

Solution:
Mendel's approach of using mathematics to explain biological phenomena was new and unacceptable to many biologists of his time.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following best describes the action of the wooden block on the floor before and after the floor yields when an iron cylinder of mass 25 kg is placed on top of the block, causing them to go down with an acceleration of 0.1 m/s²?

Options:
A The block exerts an upward force on the floor before yielding and a downward force on the floor after yielding.
B The block exerts a downward force on the floor before yielding and no force on the floor after yielding.
C The block exerts no force on the floor before yielding and a downward force on the floor after yielding.
D The block exerts an upward force on the floor before yielding and no force on the floor after yielding.

The correct answer is:
The block exerts an upward force on the floor before yielding and a downward force on the floor after yielding.

Solution:
Correct Option is : (A)
The block exerts an upward force on the floor before yielding and a downward force on the floor after yielding.

Topic: Chemistry, Laws of Motion, NEET
Which of the following best describes the behavior of euglenoids in the absence of sunlight?

Options:
A They continue to photosynthesize
B They behave like heterotrophs and predate on other organisms
C They die
D They become dormant

The correct answer is:
They behave like heterotrophs and predate on other organisms

Solution:
Euglenoids are photosynthetic in the presence of sunlight, but when deprived of it, they switch to a heterotrophic mode of survival and predate on other smaller organisms. This adaptation allows them to survive in environments where sunlight is scarce.

Topic: Biology, Biological Classification, NEET
Which of the following best describes the change in magnetic behavior when alkali metal solutions in liquid ammonia go from paramagnetic to diamagnetic?

Options:
A They become more magnetic.
B They become less magnetic.
C They become non-magnetic.
D They become ferromagnetic.

The correct answer is:
They become less magnetic.

Solution:
The change in magnetic behavior when alkali metal solutions in liquid ammonia go from paramagnetic to diamagnetic means they become less magnetic.

Topic: Chemistry, s Block Elements, NEET
Which of the following best describes the difference between ideal and non-ideal solutions in the context of forces of interaction between molecules in liquid solutions?

Options:
A Ideal solutions exhibit weaker A-B interactions compared to A-A and B-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have stronger A-A and B-B interactions than A-B interactions, resulting in negative deviations from Raoult's law.
B Ideal solutions exhibit weaker A-A and B-B interactions compared to A-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have stronger A-B interactions than A-A and B-B interactions, resulting in negative deviations from Raoult's law.
C Ideal solutions exhibit stronger A-A and B-B interactions compared to A-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have weaker A-B interactions than A-A and B-B interactions, resulting in negative deviations from Raoult's law.
D Ideal solutions exhibit stronger A-B interactions compared to A-A and B-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have weaker A-A and B-B interactions than A-B interactions, resulting in negative deviations from Raoult's law.

The correct answer is:
Ideal solutions exhibit weaker A-A and B-B interactions compared to A-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have stronger A-B interactions than A-A and B-B interactions, resulting in negative deviations from Raoult's law.

Solution:
Correct Option is : (B)
Ideal solutions exhibit weaker A-A and B-B interactions compared to A-B interactions, leading to positive deviations from Raoult's law, whereas non-ideal solutions have stronger A-B interactions than A-A and B-B interactions, resulting in negative deviations from Raoult's law.

Topic: Chemistry, Solutions, NEET
Which of the following best describes the direction and magnitude of the net force on the pebble when it is momentarily at rest at its highest point?

Options:
A The net force is upward and equal to zero.
B The net force is upward and greater than zero.
C The net force is downward and greater than zero.
D The net force is downward and equal to zero.

The correct answer is:
The net force is downward and greater than zero.

Solution:
Correct Option is : (C)
The net force is downward and greater than zero.

Topic: Chemistry, Laws of Motion, NEET
Which of the following best describes the limitation of the Two Kingdom system of classification?

Options:
A It only classifies multicellular organisms
B It only classifies photosynthetic organisms
C It does not distinguish between eukaryotes and prokaryotes, unicellular and multicellular organisms, and photosynthetic and non-photosynthetic organisms
D It only classifies non-photosynthetic organisms

The correct answer is:
It does not distinguish between eukaryotes and prokaryotes, unicellular and multicellular organisms, and photosynthetic and non-photosynthetic organisms

Solution:
The Two Kingdom system of classification did not make distinctions between different types of organisms, such as eukaryotes and prokaryotes, unicellular and multicellular organisms, and photosynthetic and non-photosynthetic organisms.

Topic: Biology, Biological Classification, NEET
Which of the following best describes the magnitude and direction of the net force acting on a stone of mass 0.1 kg just after it is dropped from the window of a train accelerating with 1 m/s²?

Options:
A The net force is 0 N, acting upward.
B The net force is 0.1 N, acting downward.
C The net force is 0.1 N, acting upward.
D The net force is 1.1 N, acting downward.

The correct answer is:
The net force is 0.1 N, acting downward.

Solution:
Correct Option is : (B)
The net force is 0.1 N, acting downward.

Topic: Chemistry, Laws of Motion, NEET
Which of the following best describes the metabolism of bacteria as a group?

Options:
A Autotrophic
B Heterotrophic
C Both A) and B)
D Neither A) nor B)

The correct answer is:
Both A) and B)

Solution:
Compared to many other organisms, bacteria as a group show the most extensive metabolic diversity. Some of the bacteria are autotrophic, meaning they can synthesize their own food from inorganic substrates. They may be photosynthetic autotrophic or chemosynthetic autotrophic. However, the vast majority of bacteria are heterotrophic, meaning they depend on other organisms or on dead organic matter for food.

Topic: Biology, Biological Classification, NEET
Which of the following best describes the motion represented by the graph, where the velocity decreases from a positive value to a negative value and at an instant its value decreases suddenly?

Options:
A A ball thrown upward and then caught at its highest point.
B A ball rolling down a slope and coming to a stop.
C A ball falling from a height and rebounding back after hitting the ground.
D A ball moving with a constant velocity.

The correct answer is:
A ball falling from a height and rebounding back after hitting the ground.

Solution:
Correct Option is : (C)
A ball falling from a height and rebounding back after hitting the ground.

Topic: Chemistry, Motion In One Dimension, NEET
Which of the following best describes the position of the image when an object is placed at a distance of 10 cm in front of a concave mirror with a radius of curvature of 15 cm?

Options:
A 5 cm
B 15 cm
C -20 cm
D -30 cm

The correct answer is:
-30 cm

Solution:
Correct Option is : (D)
-30 cm

Topic: Chemistry, Ray Optics, NEET
Which of the following best describes the process of Zone Refining?

Options:
A It involves the purification of substances through the use of high temperatures.
B It is a method used to separate mixtures based on the differences in their boiling points.
C Zone refining is a technique for purifying materials by passing a molten zone along a solid material.
D This process involves the extraction of metals from their ores using chemical reactions.

The correct answer is:
Zone refining is a technique for purifying materials by passing a molten zone along a solid material.

Solution:
Correct Option is : (C)
Zone refining is a technique for purifying materials by passing a molten zone along a solid material.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following best describes the purpose of nomenclature in Coordination Chemistry?

Options:
A To add complexity to formulas
B To simplify chemical reactions
C To facilitate systematic naming and identification
D To promote random naming conventions

The correct answer is:
To facilitate systematic naming and identification

Solution:
Nomenclature in Coordination Chemistry aims to provide a systematic way of naming compounds for easy identification.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following best describes the relationship between chromosomes and genes?

Options:
A Chromosomes are made up of genes
B Chromosomes and genes are unrelated
C Chromosomes and genes occur in pairs
D Chromosomes control the expression of traits, while genes determine physical characteristics

The correct answer is:
Chromosomes and genes occur in pairs

Solution:
Chromosomes and genes occur in pairs, with the two alleles of a gene pair located on homologous sites on homologous chromosomes.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following best describes the role of a depressant in the froth flotation process?

Options:
A Increase the solubility of minerals in water.
B Enhance the frothing property of the solution.
C Suppress the flotation of unwanted minerals.
D Accelerate the settling of froth.

The correct answer is:
Suppress the flotation of unwanted minerals.

Solution:
Correct Option is : (C)
Suppress the flotation of unwanted minerals.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following best describes the sign (positive or negative) of the work done by friction on a body sliding down an inclined plane?

Options:
A Positive
B Negative
C Zero
D It depends on the direction of motion

The correct answer is:
Negative

Solution:
Correct Option is : (B)
Negative

Topic: Chemistry, Work Power Energy, NEET
Which of the following best describes the significance/applications of dipole moment?

Options:
A Measures the polarity of a molecule in chemistry.
B Determines the size of a dipole in mathematics.
C Measures the pressure in fluid dynamics.
D Calculates the velocity of a moving object in physics.

The correct answer is:
Measures the polarity of a molecule in chemistry.

Solution:
Correct Option is : (A)
Measures the polarity of a molecule in chemistry.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following best describes why Mendel's work was not recognised until 1900?

Options:
A Communication was not easy in those days
B Mendel's work was not accepted by his contemporaries
C Mendel could not provide any physical proof for the existence of factors
D All of the above

The correct answer is:
All of the above

Solution:
Mendel's work was not widely publicised due to communication difficulties, his concept of genes and alleles was not accepted by his contemporaries, and he could not provide physical proof for the existence of factors (genes).

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following best explains the difference in behavior between PH3 and NH3 when introduced slowly into water?

Options:
A PH3and NH3have similar molecular structures, so they both dissolve in water.
B PH3and NH3 both form hydrogen bonds with water, causing them to dissolve.
C NH3forms hydrogen bonds with water, making it soluble, while PH3cannot form hydrogen bonds and escapes as a gas.
D PH3forms hydrogen bonds with water, making it soluble, while NH3cannot form hydrogen bonds and escapes as a gas.

The correct answer is:
NH3forms hydrogen bonds with water, making it soluble, while PH3cannot form hydrogen bonds and escapes as a gas.

Solution:
Correct Option is : (C)
NH3forms hydrogen bonds with water, making it soluble, while PH3cannot form hydrogen bonds and escapes as a gas.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following best explains the phenomenon observed when a suction pump is removed from a U-tube containing mercury with a small pressure difference, causing the column of mercury in the U-tube to execute simple harmonic motion?

Options:
A The U-tube undergoes random vibrations due to the sudden pressure change.
B The mercury column collapses and stops moving.
C The mercury column oscillates back and forth as a result of restoring forces.
D The mercury column immediately settles at its new equilibrium position.

The correct answer is:
The mercury column oscillates back and forth as a result of restoring forces.

Solution:
Correct Option is : (C)
The mercury column oscillates back and forth as a result of restoring forces.

Topic: Chemistry, Oscillations, NEET
Which of the following best explains the role of cryolite in the metallurgy of aluminium?

Options:
A Cryolite acts as a reducing agent.
B Cryolite increases the electrical conductivity of the electrolyte.
C Cryolite lowers the melting point of alumina.
D Cryolite prevents the formation of impurities during the electrolytic process.

The correct answer is:
Cryolite lowers the melting point of alumina.

Solution:
Correct Option is : (C)
Cryolite lowers the melting point of alumina.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following best explains the strong reducing power of lithium in aqueous solution?

Options:
A High ionization energy
B High enthalpy of hydration
C Small atomic size
D High oxidation state

The correct answer is:
High enthalpy of hydration

Solution:
Correct Option is : (B)
High enthalpy of hydration

Topic: Chemistry, s Block Elements, NEET
Which of the following best explains why SF6is known but SCl6is not?

Options:
A SF6has a smaller sulfur atom surrounded by six smaller fluorine ions, allowing for greater accommodation.
B SF6is more stable due to the electronegativity of fluorine.
C SCl6is unstable because sulfur and chlorine have similar atomic sizes.
D SCl6has a smaller sulfur atom surrounded by six smaller chlorine ions, leading to increased interionic repulsion.

The correct answer is:
SCl6has a smaller sulfur atom surrounded by six smaller chlorine ions, leading to increased interionic repulsion.

Solution:
Correct Option is : (D)
SCl6has a smaller sulfur atom surrounded by six smaller chlorine ions, leading to increased interionic repulsion.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following best explains why the pH of a 10–8mol dm–3solution of HCl is observed to be less than 7.0, even though pH = – log [H+] suggests it should be 8?

Options:
A The solution is contaminated with impurities, causing a decrease in pH.
B HCl undergoes partial dissociation in the solution, resulting in a higher concentration of H+ions.
C The pH scale is not applicable to such dilute solutions, as the contribution of H3O+from water is significant.
D There is a measurement error in determining the pH of the solution.

The correct answer is:
The pH scale is not applicable to such dilute solutions, as the contribution of H3O+from water is significant.

Solution:
Correct Option is : (C)
The pH scale is not applicable to such dilute solutions, as the contribution of H3O+from water is significant.

Topic: Chemistry, Ionic Equilibrium, NEET
Which of the following best represents the acceleration of the stone at t = 11 s after it is dropped from a person standing on top of a truck that starts from rest and accelerates uniformly at 2.0 m/s²?

Options:
A 2.0 m/s²
B 9.8 m/s²
C 7.8 m/s²
D 0.0 m/s²

The correct answer is:
9.8 m/s²

Solution:
Correct Option is : (B)
9.8 m/s²

Topic: Chemistry, Laws of Motion, NEET
Which of the following best represents the declination at point Q, the intersection of the geographical and magnetic equators, within the plane S formed by the dipole axis and the axis of the earth?

Options:
A 11.3°
B 12.5°
C 10.2°
D 13.8°

The correct answer is:
11.3°

Solution:
Correct Option is : (A)
11.3°

Topic: Chemistry, Magnetic Properties of Matter, NEET
Which of the following best represents the excess pressure inside a soap bubble with a radius of 5.00 mm at a temperature of 20 °C, given that the surface tension of the soap solution is 2.50 × ${{10}^{-2}}$ N${{m}^{-1}}$? If an air bubble of the same size is formed at a depth of 40.0 cm inside a container containing the soap solution (with a relative density of 1.20), what would be the pressure inside the air bubble, in units of atmospheric pressure (1 atmospheric pressure is 1.01 × ${{10}^{5}}$ Pa)?

Options:
A 1.06×${{10}^{5}}$ Pa
B 1.20×${{10}^{5}}$ Pa
C 1.35×${{10}^{5}}$ Pa
D 1.50×${{10}^{5}}$ Pa

The correct answer is:
1.06×${{10}^{5}}$ Pa

Solution:
Correct Option is : (A)
1.06×${{10}^{5}}$ Pa

Topic: Chemistry, Mechanical Properties of Fluids, NEET
Which of the following best summarizes the valence bond theory of covalent bond formation, using the example of hydrogen, and explains the interpretation of energy changes during dihydrogen formation?

Options:
A The valence bond theory involves the sharing of electrons between hydrogen atoms, leading to the formation of a covalent bond. Energy is released during dihydrogen formation due to the stabilization of the system.
B The valence bond theory suggests that hydrogen atoms exchange electrons to create a covalent bond. Energy is absorbed during dihydrogen formation as electrons move to higher energy states.
C The valence bond theory proposes that hydrogen atoms attract each other electrostatically, resulting in a covalent bond. Energy is released during dihydrogen formation due to increased atomic stability.
D The valence bond theory describes hydrogen atoms repelling each other, causing the formation of a covalent bond. Energy is absorbed during dihydrogen formation due to electron repulsion.

The correct answer is:
The valence bond theory involves the sharing of electrons between hydrogen atoms, leading to the formation of a covalent bond. Energy is released during dihydrogen formation due to the stabilization of the system.

Solution:
Correct Option is : (A)
The valence bond theory involves the sharing of electrons between hydrogen atoms, leading to the formation of a covalent bond. Energy is released during dihydrogen formation due to the stabilization of the system.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following biodiversity hotspots covers India's exceptionally high biodiversity regions?

Options:
A Western Ghats and Sri Lanka
B Indo:Burma
C Himalaya
D All of the above

The correct answer is:
All of the above

Solution:
Western Ghats and Sri Lanka, Indo:Burma, and Himalaya are three of the biodiversity hotspots that cover India's exceptionally high biodiversity regions.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following biological phenomenon involves a bacteriophage?

Options:
A Transformation
B Conjugation
C Translocation
D Transduction

The correct answer is:
Transduction

Solution:
Transfer of a segment of DNA from one bacteria to another by a virus or a bacteriophage is called transduction, it is a primitive method of gene transfer observed in bacteria.

Topic: Biology, Biological Classification, NEET