datavorous/entrance-exam-dataset huggingface dataset:
Which one of the following statements is true?

Options:
A Head of humerus bone articulates with acetabulum of pectoral girdle.
B Head of humerus bone articulates with glenoid cavity of pectoral girdle.
C Head of humerus bone articulates with a cavity called acetabulum of pelvic girdle.
D Head of humerus bone articulates with a glenoid cavity of pelvic girdle.

The correct answer is:
Head of humerus bone articulates with glenoid cavity of pectoral girdle.

Solution:
At the point where the superior and lateral borders of the scapula meet, there is the lateral angle which presents a shallow articular surface termed as glenoid cavity into which the head of the humerus articulates.

Topic: Biology, Locomotion and Movement, NEET
Which one of the following statements is true?

Options:
A Both light and sound waves can travel in vacuum
B Both light and sound waves in air are transverse
C The sound waves in air are longitudinal while the light waves are transverse
D Both light and sound waves in air are longitudinal

The correct answer is:
The sound waves in air are longitudinal while the light waves are transverse

Solution:
The sound waves in air are longitudinal while the light waves are transverse.

Topic: Physics, Waves and Sound, NEET, NEET 2006
Which one of the following statements is true for the speed $v$ and the acceleration $a$ of particle executing simple harmonic motion?

Options:
A When $v$ is maximum, $a$ is maximum
B Value of $a$ is zero, whatever may be value of $v$
C When $v$ is zero, $a$ is zero
D When $v$ is maximum $a$ is zero

The correct answer is:
When $v$ is maximum $a$ is zero

Solution:
In SHM
$\text {Velocity }=A \omega \sin \left(\omega t+\frac{\pi}{2}\right)$
Acceleration $= A \omega^2 \sin (\omega t+\pi)$
This shows that $V$ is max then $a=0$

Topic: Physics, Oscillations, NEET, NEET 2004
Which one of the following statements is true, in respect of the usual quantities represented by âQ, âU and âW.

Options:
A ∆U and ∆W are path dependent
B ∆Q and ∆U are path dependent
C ∆U does not depends upon path.
D ∆Q does not depends upon path

The correct answer is:
∆U does not depends upon path.

Solution:
Internal energy (∆U) does not depends upon path. It depends only on initial and final states

Topic: Physics, Thermodynamics, NEET
Which one of the following statements is true regarding digestion and absorption of food in humans?

Options:
A Oxyntic cells in our stomach secrete the proenzyme pepsinogen
B About 60% of starch is hydrolyzed by salivary amylase in our mouth
C Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
D Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+

The correct answer is:
Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+

Solution:
Stomach consists of many gastric glands which contain many groups of cells. Peptic cells or chief cells that secrete inactive pepsinogen, Oxyntic cells or Parietal cells that secrete HCl and intrinsic factor, Mucous cells that secrete mucus are different groups of cells. Digestion of carbohydrates begin in the mouth. 30% starch is digested and converted into maltose by salivary amylase enzyme. Absorption of digested food takes place through intestine. Absorprion of fatty acids and glycerol do not directly enter the blood stream and these are insoluble in water. These first enter the lacteals and then the blood stream. When these are getting absorbed from intestinal lumen, into mucosa layer micelle formation takes place. Later fat globules Chylomicrons help them to get absorbed from mucosa into the lacteals. Fructose are amino acids are directly absorbed with the help of carrier ions Na+

Topic: Biology, Digestion and Absorption, NEET
Which one of the following statements is wrong?

Options:
A Water potential is the chemical potential of the water
B Solute potential is always negative
C Pressure potential is zero in a flaccid cell
D Water potential equals solute potential in a fully turgid cell

The correct answer is:
Water potential equals solute potential in a fully turgid cell

Solution:
Water potential is the difference in the free energy or chemical potential per unit molal volume of water in a system and that of pure water at the same temperature and pressure. It is represented by greek letter Î¨ (psi) or more accurately Î¨w
Water potential or Î¨w is the sum total of Î¨s and Î¨p.
Î¨w = Î¨s + Î¨p
where Î¨sâ solute potential
Î¨pâ pressure potential

Topic: Biology, Transport in Plants, NEET
Which one of the following statements is wrong?

Options:
A Algin and carrageen are products of algae
B Agar-agar is obtained from Gelidium and Gracilaria
C Chlorella and Spirulina and used a space food
D Mannitol is stored food in Rhodophyceae

The correct answer is:
Mannitol is stored food in Rhodophyceae

Solution:
Seaweeds contain carrageenan and alginate. Because of their water-holding properties, carrageenan and alginate are extracted from seaweeds and used to thicken a variety of foods, including soy milk, chocolate milk, etc.
Agar or agar-agar, is a jelly-like substance, obtained from red algae Gelidium and Gracilaria. Agar can be used as a laxative, an appetite suppressant, a vegetarian substitute for gelatin, a thickener for soups, etc.
Chlorella and Spirulina are forms of alga and highly rich in nutrients. They are used as a food supplement by space travellers and athletes.
Mannitol is the stored food in Phaophyceae (brown algae) In Rhodophyceae stored food is floridean starch.

Topic: Biology, Plant Kingdom, NEET, NEET 2015 (Phase 1)
Which one of the following statements is wrong?

Options:
A Cyanobacteria are also called blue - green algae
B Golden algae are also called desmids
C Eubacteria are also called false bacteria
D Phycomycetes are also called algal fungi

The correct answer is:
Eubacteria are also called false bacteria

Solution:
Eubacteria are the true bacteria, which lack a nucleus and membrane-bound organelles like mitochondria, chloroplast, etc. Bacteria are cosmopolitan. They can survive almost everywhere, including the bottom of oceans, our month, acidic and alkaline environment, hot springs, puddles, on glaciers, surface water, soil, foodstuffs, petroleum, rubbish, manure, the surface of plants, the surface of animals, body cavities, intestinal tracts of animals, etc.

Topic: Biology, Biological Classification, NEET, NEET 2016 (Phase 1)
Which one of the following statements is wrong?

Options:
A Sucrose is a disaccharide
B Cellulose is a polysaccharide
C Uracil is a pyrimidine
D Glycine is a sulphur-containing amino acid

The correct answer is:
Glycine is a sulphur-containing amino acid

Solution:
Glycine is the simplest, neutral amino acid that is devoid of sulphur content.

Sucrose is made up of glucose and fructose. Cellulose is a polymer of glucose. Uracil is a pyrimidine of RNA.

Topic: Biology, Biomolecules (B), NEET, NEET 2016 (Phase 1)
Which one of the following statements is wrong?

Options:
A Algae increase the level of dissolved oxygen in the immediate environment
B Algin is obtained from red algae, and carrageenan from brown algae
C Agar - agar is obtained from Gelidium and Gracilaria
D Laminaria and Sargassum are used as food

The correct answer is:
Algin is obtained from red algae, and carrageenan from brown algae

Solution:
Algin chemical is taken from brown seaweeds. It is used to make medicine and carrageenan from red algae a substance extracted from red and purple seaweeds, consisting of a mixture of polysaccharides. It is used as a thickening or emulsifying agent in food products.

Topic: Biology, Plant Kingdom, NEET, NEET 2016 (Phase 2)
Which one of the following statements is wrong?

Options:
A de-Broglie's wavelength is given by λ=hmv , were m=mass of the particle,v=group velocity of the particle.
B The uncertainty principle is ΔE×Δt≥h4π.
C Half-filled and fully-filled orbitals have greater stability due to the greater exchange energy, greater symmetry and more balanced arrangement.
D The energy of 2s orbital is less than the energy of 2p orbital in case of hydrogen-like atoms.

The correct answer is:
The energy of 2s orbital is less than the energy of 2p orbital in case of hydrogen-like atoms.

Solution:
(i) λ=hp=hmv
(ii) Δx.Δp=h4π
Δx×Δp×dtΔt≥h4π ∴ΔpΔt=f
fΔx    Δt≥h4π, fΔx=ΔE
ΔE.Δt≥h4π
(iii) 3rd statement is true.
(iv) The energy of 2s-orbital and 2p-orbital in case of hydrogen like atoms is equal because they are single electron species.

Topic: Chemistry, Structure of Atom, NEET, NEET 2017
Which one of the following statements is wrong about zinc blende type structure?

Options:
A Each Zn2+ ion is surrounded tetrahedrally by four S2- ions and each S2- ion by four Zn2+ ions
B S2- ions form fcc arrangement
C AgBr has zinc blende type structure
D Cuprous halides have zinc blende type structure

The correct answer is:
AgBr has zinc blende type structure

Solution:
Here statement C is incorrect as AgBr has rock-salt structure not zinc blende type structure. Rest other statements are correct as Each Zn2+ ion is surrounded tetrahedrally by four S2- ions and each S2- ion by four Zn2+ ions and S2- ions form fcc arrangement.

Topic: Chemistry, Solid State, NEET
Which one of the following statements is wrong in case Bhopal gas tragedy?

Options:
A Thousands of human beings died
B Radioactive fall out engulfed Bhopal
C It took place in the night of December $2 / 3$, 1984
D Methyl isocyanate gas leakage took place

The correct answer is:
Radioactive fall out engulfed Bhopal

Solution:
Bhopal gas gragedy (Bhopal disaster) the world's worst industrial catastrophes. It occurred on the night of December $2 / 3,1984$ at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh. A leak of methyl isocyanate gas and other chemicals from the plant resulted the exposure of hundreds of thousands of people. The official immediate death toll was 2,259 and the government of Madhya Pradesh has confirmed a total of 3,787 deaths related to the gas release. A government affidavit in 2006 stated the leak caused 5,58125 injuries.

Topic: Biology, Environmental Issues, NEET, NEET 2011 (Screening)
Which one of the following statements is wrong in case of Bhopal tragedy

Options:
A Methyl Isocyanate gas leakage took place
B Thousands of human beings died
C Radioactive fall out engulfed Bhopal
D It took place in the night of December 2/3 1984.

The correct answer is:
Radioactive fall out engulfed Bhopal

Solution:
The Bhopal gas tragedy occurred on the night of December 2-3, 1984 at the Union Carbide India Limited pesticide plant in Bhopal, Madhya Pradesh. A leak of methyl isocyanate gas and other chemicals from the plant resulted in the exposure of hundreds of thousands of people.

Topic: Biology, Environmental Issues, NEET
Which one of the following statements is wrong in the context of X-rays generated from an X-ray tube?

Options:
A Wavelength of characteristic X-rays decreases when the atomic number of the target increases
B Cut-off wavelength of the continuous X-rays depends on the atomic number of the target
C Intensity of the characteristic X-rays depends on the electrical power given to the X-ray tube
D Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube

The correct answer is:
Cut-off wavelength of the continuous X-rays depends on the atomic number of the target

Solution:
Cut-off wavelength depends on the applied voltage not on the atomic number of the target. Characteristic wavelengths depend on the atomic number of target.

Topic: Physics, Atomic Physics, NEET
Which one of the following statements is wrong?

Options:
A Archaebacteria differ from eubacteria have similar structured cell wall
B Mesosomes perform the function of mitochondria in bacteria
C Cyanobacteria are also called blue green algae.
D The structures that help some bacteria to attach to rocks and/or host tissues are fimbrae.

The correct answer is:
Archaebacteria differ from eubacteria have similar structured cell wall

Solution:
Archaebacteria differs from eubacteria in cell wall and cell membrane characteristics. Their cell wall lacks peptidoglycan and consists of complex non cellulosic polysaccharide. Cell membrane consists of branched lipids which decreases fluidity and increases thermal stability.

Topic: Biology, Biological Classification, NEET
Which one of the following statements pertaining to plant structure is correct?

Options:
A

The shoot apical meristem has a quiescent centre.

B

Cork lacks stomata but lenticels carry out transpiration

C

Passage cells help in transfer of food from cortex to phloem

D

Sieve tube elements possess cytoplasm but no nuclei.

The correct answer is:

Sieve tube elements possess cytoplasm but no nuclei.

Solution:
Sieve tube elements possess cytoplasm but lack nucleus at maturity. Its metabolic activities are regulated by the nucleus of closely associated cell called companion cell.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which one of the following statements pertaining to plant structure is correct?

Options:
A The sclerenchyma comprises of isodiametric cells and forms the major component with organs.
B Xylem parenchyma cells are dead and thin-walled with a cell wall made of pectin.
C Tracheids are elongated or tube-like cells with thick and lignified walls and no protoplasm.
D Parenchymatous cells provide mechanical support to the internal organs.

The correct answer is:
Tracheids are elongated or tube-like cells with thick and lignified walls and no protoplasm.

Solution:
Tracheids are elongated or tube-like cells with thick and lignified walls and tapering ends. These are dead and are without protoplasm.
Parenchyma forms the major component within organs. The cells of the parenchyma are generally isodiametric. They may be spherical, oval, round, polygonal or elongated in shape. The parenchyma performs various functions like photosynthesis, storage, secretion.
Sclerenchyma provides mechanical support to organs.
Xylem parenchyma cells are living and thin-walled, and their cell walls are made up of cellulose. They store food materials in the form of starch or fat, and other substances like tannins

Topic: Biology, Anatomy of Flowering Plants, NEET
Which one of the following statements pertaining to plant structure is correct?

Options:
A Cork lacks stomata, but lenticels carry out transpiration.
B Passage cells help in transfer of food from cortex to phloem.
C Sieve tube possess cytoplasm and nuclei.
D Shoot apical meristem has a vascular tissue.

The correct answer is:
Cork lacks stomata, but lenticels carry out transpiration.

Solution:
Cork is dead tissue that lacks stomata but lenticels present carries transpiration (0.1-1% only) also carries gaseous exchange. Passage cells are present in endodermis which regulates the unidirectional flow of water and minerals in roots. Sieve tube lacks nuclei and the nucleus of the companion cells regulates its functioning. Shoot apex consists of meristematic tissue only.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which one of the following statements regarding enzyme inhibition is correct?

Options:
A competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
B competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
C non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate
D non-competitive inhibitors often bind to the enzyme irreversibly.

The correct answer is:
competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme

Solution:
Competitive Inhibition occurs when the binding of the inhibitor to the active site on the enzyme prevents the binding of the substrate and vice versa. The binding of competitive inhibitors to enzymes are reversible. Non-competitive inhibition occurs when the inhibitor binds to the enzyme at a site away from the active site such that even on binding of the substrate, the enzyme functions less effectively. This type of inhibition is reversible and cannot be overcome by adding a large amount of substrate.
Related Theory
Enzyme inhibitors prevent the formation of an enzyme-substrate complex and hence prevent the formation of product. Inhibition of enzymes may be either reversible or irreversible depending on the specific effect of the inhibitor being used. Competitive inhibition involves a molecule, other than the substrate, binding to the enzyme's active site. The molecule (inhibitor) is structurally and chemically similar to the substrate and hence able to bind to the active site. The competitive inhibitor blocks the active site and thus prevents substrate binding. As the inhibitor is in competition with the substrate, its effects can be reduced by increasing substrate concentration. Non-competitive inhibition involves a molecule binding to $a$ site other than the active site (an allosteric site). (Ref. to Fig. 27.3)

Topic: Biology, Biomolecules (B), NEET, NEET 2005
Which one of the following statements regarding enzyme inhibition is correct?

Options:
A Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein.
B Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme.
C Non-competitive inhibition of an enzyme can be overcome by adding a large amount of substrate.
D Non-competitive inhibitors bind at the active site on the enzyme surface.

The correct answer is:
Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme.

Solution:
Competitive inhibition is a reversible inhibition where inhibitor competes with the substrate for the active site of an enzyme. A competitive inhibitor is usually chemically similar to the substrate and therefore, fits into the active site of an enzyme and binds with it. The inhibition is thus due to substrate analogue. The enzyme, now cannot act upon the substrate and reaction products are not formed. Hence, the action of an enzyme may be reduced or inhibited. Since a competitive inhibitor occupies the site only temporarily, the enzyme action is not permanently affected. The activity of succinate dehydrogenase is inhibited by malonate and is the most common example of competitive inhibition.

Topic: Chemistry, Biomolecules, NEET
Which one of the following statements regarding helium is incorrect?

Options:
A It is used to produce and sustain powerful superconducting magnets
B It is used to fill gas balloons instead of hydrogen because it is lighter and non–inflammable
C It is used as a cryogenic agent for carrying out experiments at low temperatures
D It is used in gas–cooled nuclear reactors.

The correct answer is:
It is used to produce and sustain powerful superconducting magnets

Solution:
Helium is not used to produce and sustain powerful superconducting magnets. All others are the uses of helium.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which one of the following statements regarding Henry's law is not correct?

Options:
A The value of KH changes with function of the nature of the gas.
B Higher the value of KH at a given pressure, higher is the solubility of the gas in the liquids
C The partial pressure of the gas in vapour phase is proportional to the mole fraction of of the gas in the solution.
D Different gases have different KH (Henry's law constant) value at a same temperature.

The correct answer is:
Higher the value of KH at a given pressure, higher is the solubility of the gas in the liquids

Solution:
Liquid solution P gas  =  K H  ×  X gas as K H ∝ 1 X gas
So, more is K H less is solubility. Solubility of gases is less at higher temperature. So more is the temperature more is the KH as KH∝1solubility∝ temperature

Topic: Chemistry, Solutions, NEET
Which one of the following statements regarding Henry's law is not correct?

Options:
A The value of KH increases with function of the nature of the gas.
B Higher the value of KH at a given pressure, higher is the solubility of the gas in the liquids
C The partial pressure of the gas in vapour phase is proportional to the mole fraction of of the gas in the solution.
D Different gases have different KH (Henry's law constant) value at the same temperature.

The correct answer is:
Higher the value of KH at a given pressure, higher is the solubility of the gas in the liquids

Solution:
Liquid solution
Pgas=KH×XgasasKH∝1Xgas
So, more is KH less is solubility. Solubility of gases is less at higher temperature. So more is the temperature more is the KH as KH∝1solubility∝ temperature.

Topic: Chemistry, Solutions, NEET
Which one of the following statements regarding photochemical smog is not correct?

Options:
A Carbon monoxide does not play any role in photochemical smog formation
B Photochemical smog is an oxidising agent in character
C Photochemical smog is formed through photochemical reaction involving solar energy
D Photochemical smog does not cause irritation in eyes and throat

The correct answer is:
Photochemical smog does not cause irritation in eyes and throat

Solution:
Photochemical smog is formed in warm and sunny climate during day time by the action of sunlight on primary pollutants. It contains nitrogen oxides, ozone, PAN etc., which are oxidising in nature. So, photochemical smog is an oxidising agent in character. It causes irritation in eyes and throat.

Topic: Chemistry, Environmental Chemistry, NEET, NEET 2012 (Screening)
Which one of the following statements regarding photochemical smog is not correct?

Options:
A Carbon monoxide does not play any role in photochemical smog formation
B Photochemical smog is an oxidising agent in character
C Photochemical smog is formed through photochemical reaction involving solar energy
D Photochemical smog does not cause irritation in eyes and throat

The correct answer is:
Photochemical smog does not cause irritation in eyes and throat

Solution:
As Photochemical smog causes irritation in eyes and throat so option (D) is incorrect.
Options, A, B and C are correct facts about photochemical smog.

Topic: Chemistry, Environmental Chemistry, NEET
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?

Options:
A Ovary develops into fruit
B Zygote develops into embryo
C Central cell develops into endosperm
D Ovules develop into embryo sac

The correct answer is:
Ovules develop into embryo sac

Solution:
The following changes are seen post-fertilisation in plants:

The ovary develops into fruit.

The ovules develop into seeds.

The central cell develops into endosperm.

The zygote during embryogenesis, develops into an embryo.

The antipodal cells and synergids degenerate.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2019 (All India)
Which one of the following statements related to lanthanons is incorrect?

Options:
A Europium shows +2oxidation state.
B The basicity decreases as the ionic radius decreases from Pr to Lu.
C All the lanthanons are much more reactive than aluminium.
D Ce+4 solutions are widely used as oxidizing agent in volumetric analysis.

The correct answer is:
All the lanthanons are much more reactive than aluminium.

Solution:
All the lanthanons are not much more reactive than aluminium.

Topic: Chemistry, d and f Block Elements, NEET, NEET 2016 (Phase 2)
Which one of the following strongly threatens biodiversity?

Options:
A Destruction of natural habitats and vegetation and shifting cultivation
B Inaccessible habitats in the Himalayas
C Fragile ecosystems such as mangroves and wetland
D Creation of biosphere reserves

The correct answer is:
Destruction of natural habitats and vegetation and shifting cultivation

Solution:
Biodiversity means the variability among living organisms from all sources. Important factors that causes loss of biodiversity are habitat loss, habitat fragmentation, disturbance, over exploitation, intensive agriculture and forestry.

Topic: Biology, Biodiversity and its Conservation, NEET