datavorous/entrance-exam-dataset huggingface dataset:
Which type of voids may be covered by the spheres of the third layer in the stacking of layers?

Options:
A Octahedral voids
B Triangular voids
C Cubic voids
D Tetrahedral voids

The correct answer is:
Tetrahedral voids

Solution:
In the stacking of layers, the tetrahedral voids of the second layer may be covered by the spheres of the third layer.

Topic: Chemistry, Solid State, NEET
Which type of water has the greatest water potential?

Options:
A Pure water
B Water in liquid form
C Water in gaseous form
D Water in solid form

The correct answer is:
Pure water

Solution:
The pure water will have the greatest water potential, as the greater the concentration of water in a system, the greater its kinetic energy or water potential.

Topic: Biology, Transport in Plants, NEET
Which type of wave does the function y = 2 cos(3x) sin(10t) represent?

Options:
A Travelling wave
B Stationary wave
C None at all
D Both travelling and stationary waves

The correct answer is:
Stationary wave

Solution:
Correct Option is : (B)
Stationary wave

Topic: Chemistry, Waves and Sound, NEET
Which type of wave does the function y = 2$\sqrt{v-xt}$ represent?

Options:
A Travelling wave
B Stationary wave
C None at all
D Both travelling and stationary waves

The correct answer is:
None at all

Solution:
Correct Option is : (C)
None at all

Topic: Chemistry, Waves and Sound, NEET
Which type of wave does the function y = 3 sin (5x – 0.5t) + 4 cos (5x – 0.5t) represent?

Options:
A Travelling harmonic wave
B Stationary wave
C None at all
D Both travelling and stationary waves

The correct answer is:
Travelling harmonic wave

Solution:
Correct Option is : (A)
Travelling harmonic wave

Topic: Chemistry, Waves and Sound, NEET
Which type of wave does the function y = cos x sin t + cos 2x sin 2t represent?

Options:
A Travelling wave
B Superposition of two stationary waves.
C None at all
D Both travelling and stationary waves

The correct answer is:
Superposition of two stationary waves.

Solution:
Correct Option is : (B)
Superposition of two stationary waves.

Topic: Chemistry, Waves and Sound, NEET
Which type of wave motion best describes the motion of a kink in a longitudinal spring produced by displacing one end of the spring sideways?

Options:
A Transverse
B Longitudinal
C A combination of both
D None of the above

The correct answer is:
A combination of both

Solution:
Correct Option is : (C)
A combination of both

Topic: Chemistry, Waves and Sound, NEET
Which type of wave motion best describes ultrasonic waves in air produced by a vibrating quartz crystal?

Options:
A Transverse
B Longitudinal
C Combination of both
D Neither

The correct answer is:
Longitudinal

Solution:
Correct Option is : (B)
Longitudinal

Topic: Chemistry, Waves and Sound, NEET
Which type of wave motion is exhibited by waves produced by a motorboat sailing in water?

Options:
A Transverse
B Longitudinal
C Combination of both
D None of the above

The correct answer is:
Combination of both

Solution:
Correct Option is : (C)
Combination of both

Topic: Chemistry, Waves and Sound, NEET
Which type of wave motion is exhibited by waves produced in a cylinder containing a liquid by moving its piston back and forth?

Options:
A Transverse
B Longitudinal
C Combination of both
D None of the above

The correct answer is:
Longitudinal

Solution:
Correct Option is : (B)
Longitudinal

Topic: Chemistry, Waves and Sound, NEET
Which type of WBCs are involved in resisting infections and are associated with allergic reactions?

Options:
A Neutrophils
B Basophils
C Eosinophils
D Lymphocytes

The correct answer is:
Eosinophils

Solution:
Eosinophils (2-3%) resist infections and are also associated with allergic reactions.

Topic: Biology, Body Fluids and Circulation, NEET
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

Options:
A Neutrophils
B Basophils
C Eosinophils
D Monocytes

The correct answer is:
Basophils

Solution:
The basophils are probably like mast cells of connective tissue. They release heparin, histamine and serotonin. Their nucleus is usually three lobed and their granules take basic stain strongly.
Monocytes are largest of all types of leucocytes. Their mucleus is bean-shaped. They are motile and phagocytic in nature. They engulf bacteria and cellular debris. Generally, they will change into macrophages after entering tissue spaces. Eosinophils have two-lobed nucleus. They are non-phagocytic and help in dissolving blood clot. Their number increases in people with allergic conditions such as asthma or hay fever. Neutrophils are most numerous of all leucocytes. They eat harmful germs and are therefore, phagocytic in nature. Their nucleus is many lobed and stain weakly with both acid and basic stains.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2008 (Screening)
Which type of white blood cells are concerned with the release of histamine and the natural anti-coagulant heparin?

Options:
A

Neutrophils

B

Basophils

C

Eosinophils

D

Monocytes

The correct answer is:

Basophils

Solution:
Basophil is a type of white blood cell (leucocyte) that has a lobed nucleus surrounded by granular cytoplasm. Basophils are produced continually by stem cells in the red bone marrow & move about in an amoeboid fashion. Like, mast cells, they produce histamine and heparin as part of the body’s defences at the site of an infection or injury.

Topic: Biology, Human Health and Diseases, NEET
Which types of acids react with Cu by being reduced?

Options:
A Strong acids
B Weak acids
C Oxidizing acids
D Non-oxidizing acids

The correct answer is:
Oxidizing acids

Solution:
Only oxidizing acids (nitric and hot concentrated sulfuric) react with Cu, with the acids being reduced.

Topic: Chemistry, d and f Block Elements, NEET
Which types of compounds can act as nucleophiles in the addition reaction to the carbonyl group of aldehydes and ketones?

Options:
A Alcohols
B Amines
C Alkanes
D Halogens

The correct answer is:
Amines

Solution:
The paragraph mentions that nucleophiles such as ammonia and its derivatives (H2N-Z) can add to the carbonyl group of aldehydes and ketones. Amines fall into this category.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
Which types of compounds can ammonia form with acids?

Options:
A Oxides
B Salts
C Hydrocarbons
D Alloys

The correct answer is:
Salts

Solution:
The paragraph mentions that ammonia forms ammonium salts with acids.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which types of elements exhibit variable valence?

Options:
A Noble gases
B Alkali metals
C Transition elements and actinoids
D Halogens

The correct answer is:
Transition elements and actinoids

Solution:
There are many elements which exhibit variable valence. This is particularly characteristic of transition elements and actinoids.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which types of orbitals are present in the third period elements?

Options:
A Only s orbitals
B Only p orbitals
C s, p, and d orbitals
D s and p orbitals

The correct answer is:
s, p, and d orbitals

Solution:
The elements in the third period contain d orbitals in addition to s and p orbitals.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which types of soaps are soluble in water and used for cleaning purposes?

Options:
A Sodium and potassium soaps
B Calcium and magnesium soaps
C Iron and copper soaps
D Zinc and aluminum soaps

The correct answer is:
Sodium and potassium soaps

Solution:
Only sodium and potassium soaps are soluble in water and used for cleaning purposes.

Topic: Chemistry, Chemistry in Everyday Life, NEET
Which variety of sugarcane had higher sugar content?

Options:
A Saccharum barberi
B Saccharum officinarum
C Both were the same
D None of the above

The correct answer is:
Saccharum officinarum

Solution:
The tropical canes grown in South India, Saccharum officinarum, had higher sugar content compared to the ones grown in North India, Saccharum barberi.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which variety of sugarcane had thick stems?

Options:
A Saccharum barberi
B Saccharum officinarum
C Both were the same
D None of the above

The correct answer is:
Saccharum officinarum

Solution:
The tropical canes grown in South India, Saccharum officinarum, had thick stems compared to the ones grown in North India, Saccharum barberi.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which vector can clone only a small fragment of DNA?

Options:
A Bacterial artificial chromosome
B Yeast artificial chromosome
C Plasmid
D Cosmid

The correct answer is:
Plasmid

Solution:
Length of DNA in cloning vectors.
Plasmid - 5-10 kb
Cosmid - 40-45 kb
Bacterial artificial chromosome- 200- 350 kb
Yeast artificial chromosome -1 Mb

Topic: Biology, Biotechnology - Principles and Processes, NEET, NEET 2014
Which ventricle pumps deoxygenated blood to the lungs?

Options:
A Right Ventricle
B Left Ventricle
C Both Ventricles
D None of the Above

The correct answer is:
Right Ventricle

Solution:
The pulmonary circulation starts by the pumping of deoxygenated blood by the right ventricle which is carried to the lungs where it is oxygenated and returned to the left atrium.

Topic: Biology, Body Fluids and Circulation, NEET
Which ventricle pumps oxygenated blood to the body tissues?

Options:
A Right Ventricle
B Left Ventricle
C Both Ventricles
D None of the Above

The correct answer is:
Left Ventricle

Solution:
The systemic circulation starts with the pumping of oxygenated blood by the left ventricle to the aorta which is carried to all the body tissues and the deoxygenated blood from there is collected by the veins and returned to the right atrium.

Topic: Biology, Body Fluids and Circulation, NEET
Which visual convention is used to depict bonds projecting out of the plane of paper towards the observer?

Options:
A Solid-wedge
B Dashed-wedge
C Normal line (—)
D Dotted line (..)

The correct answer is:
Solid-wedge

Solution:
A solid-wedge is used to indicate a bond projecting out of the plane of paper towards the observer.

Topic: Chemistry, General Organic Chemistry, NEET
Which vitamin deficiency can result in the condition known as beriberi?

Options:
A Vitamin A
B Vitamin B1 (Thiamine)
C Vitamin C
D Vitamin D

The correct answer is:
Vitamin B1 (Thiamine)

Solution:
Beriberi is a disease caused by a deficiency of vitamin B1 (thiamine). It can lead to symptoms such as weakness, nerve damage, and heart problems.

Topic: Chemistry, Biomolecules, NEET
Which vitamin deficiency causes pernicious anaemia?

Options:
A Vitamin B1
B Vitamin B6
C Vitamin B12
D Vitamin K

The correct answer is:
Vitamin B12

Solution:
Vitamin B12 helps to produce red blood cells. Due to deficiency of vitamin B12 the sufficient amount of red blood cells will not be produced. As a result, RBC deficiency in haemoglobin is known as pernicious anaemia.

Topic: Chemistry, Biomolecules, NEET
Which vitamin deficiency is associated with the development of megaloblastic anemia?

Options:
A Vitamin A
B Vitamin B6
C Vitamin B12
D Vitamin K

The correct answer is:
Vitamin B12

Solution:
Megaloblastic anemia is often caused by a deficiency of vitamin B12, which is required for the proper maturation of red blood cells.if !supportLineBreakNewLine

Topic: Chemistry, Biomolecules, NEET
Which vitamin deficiency is linked to the development of osteoporosis, a condition characterized by weak and brittle bones?

Options:
A Vitamin A
B Vitamin B6
C Vitamin D
D Vitamin K

The correct answer is:
Vitamin D

Solution:
Vitamin D plays a crucial role in calcium absorption and bone health. Its deficiency can lead to weakened bones and an increased risk of osteoporosis.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is added during curdling of milk?

Options:
A Vitamin A
B Vitamin E
C Vitamin B1
D Vitamin B12

The correct answer is:
Vitamin B12

Solution:
Conversion of milk to curd is done by Lactobacillus which cause coagulation of milk and partial digestion of milk protein casein. It add vitamin B12 and increases nutritional quality of curd. Curd is also useful in checking growth of other diseases causing microbes in stomach.

Topic: Biology, Microbes in Human Welfare, NEET
Which vitamin is commonly found in citrus fruits like oranges and lemons?

Options:
A Vitamin B1
B Vitamin B6
C Vitamin C
D Vitamin K

The correct answer is:
Vitamin C

Solution:
Vitamin C, also known as ascorbic acid, is commonly found in citrus fruits and is essential for overall health and immune function.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is commonly found in leafy green vegetables and is important for blood clotting?

Options:
A Vitamin A
B Vitamin C
C Vitamin D
D Vitamin K

The correct answer is:
Vitamin K

Solution:
Vitamin K is necessary for blood clotting and is commonly found in leafy green vegetables.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is essential for blood clotting and is often given to newborn babies shortly after birth to prevent bleeding disorders?

Options:
A Vitamin A
B Vitamin B6
C Vitamin K
D Vitamin E

The correct answer is:
Vitamin K

Solution:
Vitamin K is essential for blood clotting, and newborn babies are often given a vitamin K injection shortly after birth to prevent bleeding disorders.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is essential for the formation of collagen, a protein important for skin, bones, and connective tissues?

Options:
A Vitamin A
B Vitamin C
C Vitamin D
D Vitamin K

The correct answer is:
Vitamin C

Solution:
Vitamin C is essential for collagen synthesis, which is crucial for skin, bone, and connective tissue health.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is essential for the normal functioning of the nervous system and is often found in foods like fish, meat, and dairy products?

Options:
A Vitamin C
B Vitamin B6
C Vitamin D
D Vitamin K

The correct answer is:
Vitamin B6

Solution:
Vitamin B6 is essential for the normal functioning of the nervous system and is commonly found in foods like fish, meat, and dairy products.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is known to play a role in the absorption of iron from plant-based foods?

Options:
A Vitamin C
B Vitamin D
C Vitamin B12
D Vitamin K

The correct answer is:
Vitamin C

Solution:
Vitamin C enhances the absorption of iron from plant-based foods, making it an important nutrient for individuals who follow vegetarian or vegan diets.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is often referred to as the "sunshine vitamin" because the body can produce it when exposed to sunlight?

Options:
A Vitamin B1
B Vitamin D
C Vitamin K
D Vitamin C

The correct answer is:
Vitamin D

Solution:
Vitamin D is often called the "sunshine vitamin" because the body can produce it when the skin is exposed to sunlight.

Topic: Chemistry, Biomolecules, NEET
Which vitamin is primarily responsible for energy production in the body and is often referred to as the "energy vitamin"?

Options:
A Vitamin C
B Vitamin D
C Vitamin B1
D Vitamin K

The correct answer is:
Vitamin B1

Solution:
Vitamin B1, also known as thiamine, is primarily responsible for energy production in the body and is often referred to as the "energy vitamin."

Topic: Chemistry, Biomolecules, NEET
Which voltage is required for the cutoff of photoelectric emission when light with a frequency of 8.2 × 1014Hz is incident on a metal with a threshold frequency of 3.3 × 1014Hz?

Options:
A 1.0 V
B 2.0 V
C 3.0 V
D 4.0 V

The correct answer is:
2.0 V

Solution:
Correct Option is : (B)
2.0 V

Topic: Chemistry, Dual Nature of Matter, NEET
Which was the first antibiotic to be discovered?

Options:
A Penicillin
B Aspergillus niger
C Clostridium butylicum
D Lactobacillus

The correct answer is:
Penicillin

Solution:
Penicillin was the first antibiotic to be discovered, it was a chance discovery by Alexander Fleming.

Topic: Biology, Microbes in Human Welfare, NEET
Which was the last human chromosome to be completely sequenced:

Options:
A Chromosome 1
B Chromosome 11
C Chromosome 21
D Chromosome X

The correct answer is:
Chromosome 1

Solution:
The sequence of chromosome 1 was completed only in May 2006, this was the last of the 24 human chromosomes to be sequenced.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which wavelength does monochromatic light of 589 nm incident from air onto a water surface have when it is refracted?

Options:
A 589 nm
B 444 nm
C 743 nm
D 312 nm

The correct answer is:
444 nm

Solution:
Correct Option is : (B)
444 nm

Topic: Chemistry, Wave Optics, NEET
Which will form lactone on treatment with NaOH?

Options:
A α -bromo acid
B β -bromo acid
C β -hydroxy acid
D δ -bromo acid

The correct answer is:
δ -bromo acid

Solution:
δ -bromo acid on heating with NaOH gives lactone as follows

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Which will make basic buffer?

Options:
A 50Â mLÂ ofÂ 0.1Â MÂ NaOH+25Â mLÂ ofÂ 0.1Â MÂ CH3COOH
B 100 mL of 0.1 M CH3COOH+100 mL of 0.1 M NaOH
C 100Â mLÂ ofÂ 0.1Â MÂ HCl+200Â mLÂ ofÂ 0.1Â MÂ NH4OH
D 100Â mLÂ ofÂ 0.1Â MÂ HCl+100Â mLÂ ofÂ 0.1Â MÂ NaOH

The correct answer is:
100 mL of 0.1 M HCl+200 mL of 0.1 M NH4OH

Solution:
Given,

100 ml of 0.1 M HCl+200 ml of 0.1 M  NH4OH

Therefore, it is a basic buffer.

Hence, option (C) is correct.

Topic: Chemistry, Ionic Equilibrium, NEET, NEET 2019 (All India)
Which will start cooling faster out of a solid sphere of copper of radius R and a hollow sphere of same material of inner radius r and outer radius R, if both are heated to the same temperature and allowed to cool in the same environment?

Options:
A hollow sphere
B solid sphere
C at equal time
D none of these

The correct answer is:
hollow sphere

Solution:
When a body cools by radiation, according to Stefan's law:
dT dt = eA σ mc T 4 - T 0 4
As radiation takes place from outer surface, here all factors except m are same so
( dT / dt ) H ( dT / dt ) S = m S m H = - (4/3) π R 3 ρ (4/3) π R 3 - r 3 ρ = R 3 R 3 - r 3 > 1
i.e., the hollow sphere will cool at a faster rate than the solid one.

Topic: Physics, Thermal Properties of Matter, NEET
Which would quickly absorb oxygen?

Options:
A Alkaline solution of pyrogallol
B Conc. H2SO4
C Lime water
D Alkaline solution of CuSO4

The correct answer is:
Alkaline solution of pyrogallol

Solution:
Alkaline solution of pyrogallol absorbs oxygen quickly.

Topic: Chemistry, s Block Elements, NEET
Which xenon fluoride has a distorted octahedral structure in the gas phase?

Options:
A XeF2
B XeF4
C XeF6
D XeF8

The correct answer is:
XeF6

Solution:
XeF6 has a distorted octahedral structure in the gas phase due to its seven electron pairs (6 bonding pairs and one lone pair).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Whihc of the following organic compounds polymerizes to form the polyster Dacron?

Options:
A Propylene and para HO-(C6H4)-OH
B Benzoic acid and para HO-(C6H4)-OH
C Terephthalic acid and ethylene glycol
D Benzoic acid an ethanol

The correct answer is:
Terephthalic acid and ethylene glycol

Solution:
Dacron or terylene is the best known example of polyesters. It is manufactured by heating a mixture of ethylene glycol and terephthalic acid at 420 to 460 K in the presence of zinc acetate-antimaony trioxide catalyst.

Topic: Chemistry, Polymers, NEET
While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine = 17%. Considering the Chargaff’s rule it can be concluded that:

Options:
A it is a double-stranded circular DNA
B It is single-stranded DNA
C It is a double-stranded linear DNA
D No conclusion can be drawn

The correct answer is:
It is single-stranded DNA

Solution:
The DNA is single stranded as the composition does not go with rule of equal number of purines and pyrimidines.

Topic: Biology, Molecular Basis of Inheritance, NEET
While analyzing the DNA of an organism, it was found that adenine proportion was 30%. What would be the proportion of cytosine in its DNA?

Options:
A 20%
B 30%
C 40%
D 25%

The correct answer is:
20%

Solution:
DNA is the nucleic acid that forms the genetic material in all organisms. The structure of deoxyribose nucleic acid was elucidated by Watson and Crick. The DNA is a double helical structure having two anti-parallel strands of polynucleotide chains joined to each other by hydrogen bonding formed between the N-bases. In a double stranded DNA, the ratios between Adenine and Thymine and Guanine and Cytosine are constant and equals one; this observation was given by Erwin Chargaff. Thus, A+G=T+C & A=T ; G=C . Therefore, percentage of Adenine and Thymine are same and that of Guanine and Cytosine is same. G=C=20%; A=T=30% .

Topic: Biology, Molecular Basis of Inheritance, NEET
While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

Options:
A They have different mechanisms of action
B They are chemically incompatible
C They target different organs
D They have different side effects

The correct answer is:
They have different mechanisms of action

Solution:
Correct Option is : (A)
They have different mechanisms of action

Topic: Chemistry, Chemistry in Everyday Life, NEET
While correcting the biology paper of a student, the teacher found that he had written the scientific name of mango in four places as follows. Which one out of these is the correct way of writing the scientific name?

Options:
A
B
C
D

The correct answer is:

Solution:
Based on the rules of nomenclature, while writing the scientific name, the generic epithet should start with a capital letter, the species epithet should start with a small letter and both should be separately underlined.

Topic: Biology, The Living World, NEET
While examining his knee jerk Suresh's doctor found that there was no response but Suresh informs that he could feel the tendon hammer touching his knee. Where is the problem likely to be?

Options:
A Afferent pathway
B Dorsal ganglion
C Receptors
D Efferent pathway

The correct answer is:
Efferent pathway

Solution:
Receptors, afferent fibers and dorsal root ganglion are all part of the sensory pathway. As Suresh could feel the touch of the hammer his sensory pathway is normal. He could not respond because the problem is with the motor pathway or the efferent pathway.

Topic: Biology, Neural Control and Coordination, NEET
While explaining interspecific interaction of population, + sign is assigned for beneficial interaction, - sign is assigned for detrimental interaction and 0 for neutral interaction. Which of the following interactions can be assigned + for one species and - for another species involved in the interaction?

Options:
A Amensalism
B Commensalism
C Competition
D Predation

The correct answer is:
Predation

Solution:
In predation and parasitism type of interactions only one species benefits and the other species is harmed.

Species A	Species B	Name of interaction

+	+	Mutualism

-	-	Competition

+	-	Predation

+	-	Parasitism

+	0	Commensalism

-	0	Amensalism

Topic: Biology, Organisms and Populations, NEET, NEET 2022 (Phase 1)
While filling up of electrons in the atomic orbitals, the 4s orbital is filled before the 3d orbital but reverse happens during the ionization of the atom. Explain why?

Options:
A Electrons follow the Aufbau principle while filling orbitals.
B The 4s orbital has a higher energy level than the 3d orbital.
C The 3d orbital has a lower energy level than the 4s orbital.
D Electrons preferentially occupy orbitals with higher principal quantum numbers.

The correct answer is:
The 3d orbital has a lower energy level than the 4s orbital.

Solution:
Correct Option is : (C)
The 3d orbital has a lower energy level than the 4s orbital.

Topic: Chemistry, d and f Block Elements, NEET
While isolating DNA from bacteria, which of the following enzymes is not required?

Options:
A Lysozyme
B Ribonuclease
C Deoxyribonuclease
D Protease

The correct answer is:
Deoxyribonuclease

Solution:
Deoxyribonuclease will denature the isolated DNA.

Topic: Biology, Biotechnology - Principles and Processes, NEET