datavorous/entrance-exam-dataset huggingface dataset:
What is the wavelength emitted during the transition of electron in between two levels of Li2+ whose sum is 4 and difference is 2?

Options:
A 1.14×10-6m
B 2.4×10-6m
C 5.2×106m
D 3.11×10-6m

The correct answer is:
1.14×10-6m

Solution:
n1+n2=4
and n2-n1=2
So n1=1 and n2=3
Applying 1λ=RHZ21n12-1n22
On putting the values and solving, we get
λ=1.14×10-6m

Topic: Chemistry, Structure of Atom, NEET
What is the wavelength of a plane electromagnetic wave traveling in vacuum along the z-direction with a frequency of 30 MHz?

Options:
A 10 m
B 30 m
C 1 m
D 3 m

The correct answer is:
10 m

Solution:
Correct Option is : (A)
10 m

Topic: Chemistry, Electromagnetic Waves, NEET
What is the wavelength of a plane electromagnetic wave with an electric field oscillating sinusoidally at a frequency of 2.0 × 1010Hz and an amplitude of 48 V m–1?

Options:
A 1.5 × 102m
B 1.5 × 101m
C 1.5 × 100m
D 1.5 × 10–2m

The correct answer is:
1.5 × 10–2m

Solution:
Correct Option is : (D)
1.5 × 10–2m

Topic: Chemistry, Electromagnetic Waves, NEET
What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n = 4 to an energy level with n = 2?

Options:
A 486 nm
B 552 nm
C 369 nm
D 647 nm

The correct answer is:
486 nm

Solution:
Correct Option is : (A)
486 nm

Topic: Chemistry, Structure of Atom, NEET
What is the wavelength of light used in a Young's double-slit experiment, where the slits are separated by 0.28 mm, the screen is placed 1.4 m away, and the distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm?

Options:
A 500 nm
B 550 nm
C 600 nm
D 650 nm

The correct answer is:
600 nm

Solution:
Correct Option is : (C)
600 nm

Topic: Chemistry, Wave Optics, NEET
What is the wavelength of sound in tissue with a speed of 1.7 km/s, given that an ultrasonic scanner operates at a frequency of 4.2 MHz?

Options:
A $4.1\times {{10}^{-4}}$ m
B $5.4\times {{10}^{-4}}$ m
C $1.4\times {{10}^{-4}}$m
D $2.3\times {{10}^{-4}}$m

The correct answer is:
$4.1\times {{10}^{-4}}$ m

Solution:
Correct Option is : (A)
$4.1\times {{10}^{-4}}$ m

Topic: Chemistry, Waves and Sound, NEET
What is the wavelength of the incident light that results in a photocurrent being reduced to zero when a stopping potential of 0.60 V is applied to caesium, with a work function of 2.14 eV?

Options:
A 454 nm
B 650 nm
C 800 nm
D 350 nm

The correct answer is:
454 nm

Solution:
Correct Option is : (A)
454 nm

Topic: Chemistry, Dual Nature of Matter, NEET
What is the wavelength of the reflected light when monochromatic light with a wavelength of 589 nm is incident from air on a water surface with a refractive index of 1.33?

Options:
A 589 nm
B 442 nm
C 699 nm
D 556 nm

The correct answer is:
589 nm

Solution:
Correct Option is : (A)
589 nm

Topic: Chemistry, Wave Optics, NEET
What is the wavelength of the reflected sound when a bat emits ultrasonic sound of frequency 1000 kHz in air and the sound meets a water surface, with the speed of sound in air being 340 m/s and in water being 1486 m/s?

Options:
A $2.6\times {{10}^{-3}}$m
B $3.4\times {{10}^{-4}}$m
C $3.4\times {{10}^{-3}}$m
D $2.4\times {{10}^{-4}}$m

The correct answer is:
$3.4\times {{10}^{-4}}$m

Solution:
Correct Option is : (B)
$3.4\times {{10}^{-4}}$m

Topic: Chemistry, Waves and Sound, NEET
What is the wavelength of the sound when a bat emits ultrasonic waves with a frequency of 1000 kHz in air, and the waves meet a water surface?Speed of sound in air is 340 m${{s}^{-1}}$and in water 1486 m ${{s}^{-1}}$.

Options:
A $2.4\times {{10}^{-4}}$m
B $1.4\times {{10}^{-4}}$ m
C $1.4\times {{10}^{-3}}$ m
D $2.4\times {{10}^{-4}}$ m

The correct answer is:
$1.4\times {{10}^{-3}}$ m

Solution:
Correct Option is : (C)
$1.4\times {{10}^{-3}}$ m

Topic: Chemistry, Waves and Sound, NEET
What is the wavelength of the wave described by the equation y(x, t) = 0.005 sin (80.0 x – 3.0 t) with numerical constants in SI units (0.005 m, 80.0 rad ${{m}^{-1}}$, and 3.0 rad ${{s}^{-1}}$)?

Options:
A 6.125 cm
B 7.850 cm
C 5.175 cm
D 8.200 cm

The correct answer is:
7.850 cm

Solution:
Correct Option is : (B)
7.850 cm

Topic: Chemistry, Waves and Sound, NEET
What is the wavelength of the wave pattern shown on a stretched string in Figure?

Options:
A 15 cm
B 18 cm
C 20 cm
D 25 cm

The correct answer is:
20 cm

Solution:
Correct Option is : (C)
20 cm

Topic: Chemistry, Waves and Sound, NEET
What is the wavenumber defined as?

Options:
A The number of wavelengths per unit time
B The number of wavelengths per unit area
C The number of wavelengths per unit mass
D The number of wavelengths per unit length

The correct answer is:
The number of wavelengths per unit length

Solution:
The wavenumber is defined as the number of wavelengths per unit length

Topic: Chemistry, Structure of Atom, NEET
What is the weight of the body suspended from a spring balance with a 20 cm scale that reads from 0 to 50 kg, and oscillates with a period of 0.6 s?

Options:
A 219N
B 253N
C 188N
D 173N

The correct answer is:
219N

Solution:
Correct Option is : (A)
219N

Topic: Chemistry, Oscillations, NEET
What is the weight of the liver in an adult human?

Options:
A 0.5 kg
B 0.8 kg
C 1.2 to 1.5 kg
D 2.0 kg

The correct answer is:
1.2 to 1.5 kg

Solution:
The liver is the largest gland of the body, weighing about 1.2 to 1.5 kg in an adult human. It is situated in the abdominal cavity, just below the diaphragm.

Topic: Biology, Digestion and Absorption, NEET
What is the Widal test used for?

Options:
A Confirming the presence of a virus
B Confirming the presence of bacteria
C Confirming the presence of a fungus
D Confirming the presence of typhoid fever

The correct answer is:
Confirming the presence of typhoid fever

Solution:
The Widal test is used to confirm the presence of typhoid fever, which is caused by the bacterium Salmonella typhi.

Topic: Biology, Human Health and Diseases, NEET
What is the width of a single slit if the first minimum is observed at an angle 2Â° with a light of wavelength 6980 Aâ?

Options:
A 0.2Â mm
B 2Ã10-2 mm
C 2Ã105Â mm
D 2Â mm

The correct answer is:
2Ã10-2 mm

Solution:
The angular distance θ is given by
θ=λd
Given, θ=2°=π180×2, λ=6980 A∘
=6980×10-10 m
∴d=λθ=6980×10-10×1803.14×2
⇒ d≈2×10-5 m =2×10−2 mm

Topic: Physics, Wave Optics, NEET
What is the work done by a car against gravity when moving along a straight horizontal road? The mass of the car is 400 kg, and the distance moved is 2 m.

Options:
A 800 J
B 0 J
C 400 J
D 200 J

The correct answer is:
0 J

Solution:
Correct Option is : (B)
0 J

Topic: Chemistry, Work Power Energy, NEET
What is the work done by a steady pull of 25 N when 2 m of cord is unwound from a flywheel with a mass of 20 kg and a radius of 20 cm, mounted on a horizontal axle with frictionless bearings?

Options:
A 10 J
B 25 J
C 50 J
D 100 J

The correct answer is:
50 J

Solution:
Correct Option is : (C)
50 J

Topic: Chemistry, Rotational Motion, NEET
What is the work done by friction on a 2 kg body initially at rest, moving under the action of a horizontal force of 7 N, on a table with a coefficient of kinetic friction of 0.1, over a duration of 10 seconds?

Options:
A 247 J
B 494 J
C -247 J
D -494 J

The correct answer is:
-247 J

Solution:
Correct Option is : (C)
-247 J

Topic: Chemistry, Work Power Energy, NEET
What is the work done by the applied force when a 1 kg block is pushed up a surface inclined at 30° by a 10 N force, given that the coefficient of friction between the block and the incline is 0.1, and the block is pushed up by 10 m along the incline?

Options:
A 50 J
B 100 J
C 150 J
D 200 J

The correct answer is:
100 J

Solution:
Correct Option is : (B)
100 J

Topic: Chemistry, Work Power Energy, NEET
What is the work done by the applied horizontal force of 7 N on a 2 kg body, initially at rest, moving on a table with a coefficient of kinetic friction of 0.1, in 10 seconds?

Options:
A 882 J
B 994 J
C 970 J
D 870 J

The correct answer is:
882 J

Solution:
Correct Option is : (A)
882 J

Topic: Chemistry, Work Power Energy, NEET
What is the work done by the gravitational force on the drop during its first half of the journey?

Options:
A Positive work
B Negative work
C Zero work
D Insufficient information to determine

The correct answer is:
Positive work

Solution:
Correct Option is : (A)
Positive work

Topic: Chemistry, Work Power Energy, NEET
What is the work done by the gravitational force when a 1.00 g drop falls from a height of 1.00 km and hits the ground with a speed of 50.0 m/s?

Options:
A 0 J
B 5.00 J
C 2.50 J
D 10.0 J

The correct answer is:
10.0 J

Solution:
Correct Option is : (D)
10.0 J

Topic: Chemistry, Work Power Energy, NEET
What is the work done by the resistive force on a raindrop of radius 2 mm that falls from a height of 500 m above the ground? It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. If its speed on reaching the ground is 10 m/s, what is the work done by the resistive force?

Options:
A −0.162J
B +0.162 J
C 1.62 J
D -1.62 J

The correct answer is:
−0.162J

Solution:
Correct Option is : (A)
−0.162J

Topic: Chemistry, Work Power Energy, NEET
What is the work done in bringing a charge of 2 × 10⁻⁹ C from infinity to a point P where the potential due to a charge of 4 × 10⁻⁷ C located 9 cm away is 4 × 10⁴ V?

Options:
A 8 × ${{10}^{-5}}$ J
B 3.6 ×${{10}^{-5}}$ J
C 1.8 × ${{10}^{-5}}$J
D 4.5 × ${{10}^{-5}}$J

The correct answer is:
8 × ${{10}^{-5}}$ J

Solution:
Correct Option is : (A)
8 × ${{10}^{-5}}$ J

Topic: Chemistry, Capacitance, NEET
What is the x-t (position-time) graph of a woman's motion if she starts from her home at 9.00 am, walks with a speed of 5 km/h to her office 2.5 km away, stays at the office until 5.00 pm, and returns home by an auto with a speed of 25 km/h?

Options:
A A straight line sloping upward from 9.00 am to 5.00 pm, representing her walk to the office, and then a horizontal line from 5.00 pm onwards, representing her stay at the office, followed by a straight line sloping downward indicating her return by auto.
B A straight line sloping upward from 9.00 am to 5.00 pm, representing her walk to the office, followed by a horizontal line from 5.00 pm onwards, indicating her stay at the office.
C A horizontal line from 9.00 am to 5.00 pm, representing her stay at the office, followed by a straight line sloping downward indicating her return by auto.
D A straight line sloping upward from 9.00 am to 5.00 pm, representing her walk to the office, and then a horizontal line from 5.00 pm onwards, representing her stay at the office, and another straight line sloping upward indicating her return by auto.

The correct answer is:
A straight line sloping upward from 9.00 am to 5.00 pm, representing her walk to the office, and then a horizontal line from 5.00 pm onwards, representing her stay at the office, followed by a straight line sloping downward indicating her return by auto.

Solution:
Correct Option is : (A)
A straight line sloping upward from 9.00 am to 5.00 pm, representing her walk to the office, and then a horizontal line from 5.00 pm onwards, representing her stay at the office, followed by a straight line sloping downward indicating her return by auto.

Topic: Chemistry, Motion In One Dimension, NEET
What is the Young’s modulus for a perfect rigid body?

Options:
A Zero
B Infinite
C 1
D 100

The correct answer is:
Infinite

Solution:
Correct Option is : (B)
Infinite

Topic: Chemistry, Mechanical Properties of Solids, NEET
What is the Z scheme in photosynthesis?

Options:
A The synthesis of ATP from ADP and inorganic phosphate
B The reduction of NADP⁺ to NADPH + H⁺
C The transfer of electrons from photosystem II to NADP⁺
D The transfer of electrons from photosystem II to photosystem I

The correct answer is:
The transfer of electrons from photosystem II to photosystem I

Solution:
The Z scheme refers to the transfer of electrons from photosystem II, uphill to an electron acceptor, down the electron transport chain to photosystem I, excitation of electrons, transfer to another acceptor, and finally down hill to NADP⁺ reducing it to NADPH + H⁺.

Topic: Biology, Photosynthesis in Higher Plants, NEET
What is the zygote called after dividing into 8-16 daughter cells?

Options:
A Blastomeres
B Morula
C Blastocyst
D Embryo

The correct answer is:
Morula

Solution:
The zygote is called a morula after dividing into 8-16 daughter cells called blastomeres.

Topic: Biology, Human Reproduction, NEET
What is thermal stability in enzymes?

Options:
A Ability to retain catalytic power at high temperatures
B Ability to work efficiently at high temperatures and high pressures
C Resistance to damage at high temperatures
D None of the above

The correct answer is:
Ability to retain catalytic power at high temperatures

Solution:
Thermal stability is the ability of an enzyme to retain its catalytic power even at high temperatures.

Topic: Biology, Biomolecules (B), NEET
What is thrombin formed from?

Options:
A Fibrinogen
B Prothrombin
C Thrombokinase
D Calcium ions

The correct answer is:
Prothrombin

Solution:
Thrombins are formed from another inactive substance present in the plasma called prothrombin.

Topic: Biology, Body Fluids and Circulation, NEET
What is Tidal Volume (TV)?

Options:
A Volume of air inspired or expired during a normal respiration
B Volume of air inspired during a deep inspiration
C Volume of air expired during a deep expiration
D Volume of air inspired or expired during a forceful respiration

The correct answer is:
Volume of air inspired or expired during a normal respiration

Solution:
Tidal Volume (TV) is the volume of air inspired or expired during a normal respiration, which is approximately 500 mL.

Topic: Biology, Breathing and Exchange of Gases, NEET
What is tincture of iodine? What is its use?

Options:
A A solution of iodine in alcohol, used as an antiseptic.
B A solution of iodine in water, used as a disinfectant.
C A solution of iodine in oil, used as a food preservative.
D A solution of iodine in vinegar, used in cooking.

The correct answer is:
A solution of iodine in alcohol, used as an antiseptic.

Solution:
Correct Option is : (A)
A solution of iodine in alcohol, used as an antiseptic.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is TiO used for?

Options:
A Battery manufacturing
B Pigment industry
C Steel production
D Chemical catalyst

The correct answer is:
Pigment industry

Solution:
TiO is used for the pigment industry in the paragraph.

Topic: Chemistry, d and f Block Elements, NEET
What is tissue culture?

Options:
A A method of producing thousands of plants through micro-propagation
B A method of producing large number of animals
C A method of producing healthy plants from diseased plants
D None of the above

The correct answer is:
A method of producing thousands of plants through micro-propagation

Solution:
Tissue culture is a method of producing thousands of plants through micro-propagation.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is Total Lung Capacity?

Options:
A Total volume of air accommodated in the lungs at the end of a forced inspiration
B The maximum volume of air a person can breathe out after a forced inspiration
C The maximum volume of air a person can breathe in after a forced expiration
D Total volume of air accommodated in the lungs at the end of a normal expiration

The correct answer is:
Total volume of air accommodated in the lungs at the end of a forced inspiration

Solution:
Total Lung Capacity is the total volume of air accommodated in the lungs at the end of a forced inspiration. It includes RV, ERV, TV and IRV or vital capacity + residual volume.

Topic: Biology, Breathing and Exchange of Gases, NEET
What is Trichoderma?

Options:
A A chemical method to control plant diseases
B A virus that attacks insects
C A fungus used in the treatment of plant disease
D An insecticide used in integrated pest management

The correct answer is:
A fungus used in the treatment of plant disease

Solution:
Trichoderma is a fungus that is being developed as a biological control for use in the treatment of plant disease.

Topic: Biology, Microbes in Human Welfare, NEET
What is true about a monocot leaf?

Options:
A They are not dorsiventral leaves and possess non-uniform distribution of stomata.
B Absence of bulliform cells from epidermis
C Mesophyll not differentiated into palisade and spongy tissues
D The leaves do not have parallel venation

The correct answer is:
Mesophyll not differentiated into palisade and spongy tissues

Solution:
In monocot leaf is isobilateral leaf in which, mesophyll cells are not differentiated into palisade and spongy tissues. But there is well differentiate mesophyll cells in dicot leaf. Also in the upper epidermis, there are some large cells found in groups which are called bulliform cells. The venation pattern in monocot is parallel.

Topic: Biology, Morphology of Flowering Plants, NEET
What is true about $B t$ toxin?

Options:
A The inactive protoxin gets converted into active form in the insect gut
B Bt protein exists as active toxin in the Bacillus
C The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication
D The concerned Bacillus has antitoxins

The correct answer is:
The inactive protoxin gets converted into active form in the insect gut

Solution:
Bacillus thuringiensis toxin is an inactive protoxin, which gets converted into active form in the insect gut. It works as an insecticide.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2009 (Screening)
What is true about Bt toxin?

Options:
A Bt protein exists as active toxin in the Bacillus
B The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication.
C The concerned Bacillus has antitoxins.
D The inactive protoxin gets converted into an active form in the insect gut.

The correct answer is:
The inactive protoxin gets converted into an active form in the insect gut.

Solution:
Bacillus thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. Actually, the Bt toxin protein exists as inactive protoxin but once an insect ingests the inactive toxin it is converted into an active form of toxin, due to the alkaline pH of the gut which solubilizes the crystals. The activated toxin binds to the surface of midgut epithelial and creates pores that cause cell swelling and lysis and eventually cause the death of the insect. Bt is not harmful to humans, other mammals, birds, fish, or beneficial insects. Specific Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into several crop plants such as cotton.

Topic: Biology, Biotechnology and Its Applications, NEET
What is true about concept of hybridisation of atomic orbital?

Options:
A Addition of an electron pair
B Mixing up of atomic orbitals
C Removal of an electron pair
D Separation of orbitals

The correct answer is:
Mixing up of atomic orbitals

Solution:
Merging (mixing) of dissimilar orbitals of different energies to form new orbitals is known as hybridisation and the new orbital formed are known as hybrid oribitals. They have similar energy.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is true about cuticle in plants?

Options:
A It is always associated with epidermal cells.
B It is always associated with ground tissue.
C Cuticle is absent in roots.
D Both A & C

The correct answer is:
Both A & C

Solution:
The plant cuticle is an extracellular layer observed over the epidermis of leaves and young shoots of the aerial parts of plants. Its function is to provide protection against desiccation and external environmental stresses. It is secreted by the epidermal tissues having a mix of lipids and hydrocarbon polymers with wax. Cuticle is not synthesized by ground tissue and it is not observed in the root system of the plants but in the aerial parts of the plant body.

Topic: Biology, Anatomy of Flowering Plants, NEET
What is true about [EDTA]4-?

Options:
A Monodentate ligand
B Bidentate ligand
C Quadridentate ligand
D Hexadentate ligand

The correct answer is:
Hexadentate ligand

Solution:
They have six donor atoms. poly dentate ligands have flexidentate character. It is not necessary that all the donor atoms present in the polydentate ligands should form co-ordinate bonds with central metal atom or ion.

Topic: Chemistry, Coordination Compounds, NEET
What is true about exotic breeds?

Options:
A Require specific environment for growth
B Sturdy and low yielding
C Are sturdy
D Take less food

The correct answer is:
Require specific environment for growth

Solution:
Exotic breeds are the ones that have come from other countries or originally belong to other countries. The key environmental factors that influence overall livestock productivity fall within three major areas; the physical environment; biological diversity and the socio-economic environment.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is true about Insulin?

Options:
A It is an amino acid
B It is a polypeptide
C It is a carbohydrate
D It is a lipid

The correct answer is:
It is a polypeptide

Solution:
Insulin is a protein consists of 51 amino acids in two chains. α and β , the α- chain with 21 amino acids, β- chain with 30 amino acids. It is secreted by pancreas for controlling the sugar level in blood.

Topic: Chemistry, Biomolecules, NEET
What is true about orthoboric acid in aqueous medium?

Options:
A Monobasic
B Dibasic
C Tribasic
D All are correct

The correct answer is:
Monobasic

Solution:
H 3 BO 3  +  H 2 O ⇌  B(OH) 4 −  +  H +
H3BO3 is a weak monobasic acid it does not act as a H+ donor but behaves as a Lewis acid.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is true about rate of reaction?

Options:
A Decreases with increase in temperature
B Increases with increase in temperature
C May increase or decrease with increase in temperature
D Does not depend on temperature

The correct answer is:
Increases with increase in temperature

Solution:
Rate of reaction always increases with increases in temperature as increase in temperature helps in overcoming the threshold barrier.

Topic: Chemistry, Chemical Kinetics, NEET
What is true about Rheumatoid arthritis?

Options:
A It is neurological disorder.
B It causes inflammation of joints.
C It is a type of auto-immune disease.
D Both (B) and (C)

The correct answer is:
Both (B) and (C)

Solution:
Due to genetic and other unknown reasons, the immune cells of the body attacks self-cells. This results in damage to the body and is called auto-immune disease. Rheumatoid arthritis is an auto-immune disease, that causes inflammation of joints.

Topic: Biology, Human Health and Diseases, NEET
What is true about ribosomes?

Options:
A The prokaryotic ribosomes are 80S, where "S" stands for sedimentation coefficient
B These are composed of ribonucleic acid and proteins
C These are found only in eukaryotic cells
D These are self-splicing introns of some RNAs.

The correct answer is:
These are composed of ribonucleic acid and proteins

Solution:
Ribosomes are non-membranous (i.e., without membrane) cell organelles composed of rRNA and protein. These are found in both prokaryotic and eukaryotic cells. In prokaryotes, ribosomes are 70s type, whereas in eukaryotes, they are 80S type.

Topic: Biology, Cell - The Unit of Life, NEET
What is true about ribosomes?

Options:
A The prokaryotic ribosomes are $80 \mathrm{~S}$, where $S$ stands for sedimentation coefficient
B These are composed of ribonucleic acid and proteins
C These are found only in eukaryotic cells
D These are self-splicing introns of some RNAs

The correct answer is:
These are composed of ribonucleic acid and proteins

Solution:
Ribosomes are large, non-membranous, RNA-protein complexes which are necessary for protein synthesis. In prokaryotes, $70 \mathrm{~S}$ type of ribosomes are found while $80 \mathrm{~S}$ type of ribosomes are found in eukaryotes.

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2012 (Screening)