datavorous/entrance-exam-dataset huggingface dataset:
The motion of a particle executing simple harmonic motion is described by the displacement function, x(t) = A cos (ωt + φ ). If the initial (t = 0) position of the particle is 1 cm and its initial velocity is ω cm/s, what is its initial phase angle. The angular frequency of the particle is π ${{s}^{-1}}$.

Options:
A $\frac{\pi }{4}$
B $\frac{7\pi }{4}$
C $\frac{3\pi }{4}$
D $\frac{5\pi }{4}$

The correct answer is:
$\frac{7\pi }{4}$

Solution:
Correct Option is : (B)
$\frac{7\pi }{4}$

Topic: Chemistry, Oscillations, NEET
The motion of a particle executing simple harmonic motion is described by the displacement function, x(t) = A cos (ωt + φ ). If the initial (t = 0) position of the particle is 1 cm and its initial velocity is ω cm/s, what is its amplitude. The angular frequency of the particle is π ${{s}^{-1}}$.

Options:
A $\sqrt{5}$cm
B $\sqrt{7}$cm
C $\sqrt{2}$cm
D $\sqrt{3}$cm

The correct answer is:
$\sqrt{2}$cm

Solution:
Correct Option is : (C)
$\sqrt{2}$cm

Topic: Chemistry, Oscillations, NEET
The motion of a particle moving along the y-axis is represented as y=3t-2+5t-22. Identify the correct statement

Options:
A the initial t=0 velocity of the particle is 3 m s-1
B the acceleration of the particle is 5 m s-1
C the particle is at the origin at t=2 s
D all of the above

The correct answer is:
the particle is at the origin at t=2 s

Solution:
We know that vâ=dydt & aâ=dvâdt
v=dydt=3+10t-2
At t=0 velocity v=-17 m s-1
a=dvdt=10 m s-2
y=3t-2+5t-22
At the value of y will be y=32-2+52-22
therefore y=0

Topic: Physics, Motion In One Dimension, NEET
The movement of a gene from one linkage group to another is called:

Options:
A Inversion
B Duplication
C Translocation
D Crossing over

The correct answer is:
Translocation

Solution:
A set of genes at different loci on the same chromosome tend to act as a single pair of genes in meiosis instead of undergoing independent assortment. Chromosome translocation is a chromosome abnormality caused by rearrangement of parts between non-homologous chromosomes. Hence, in translocation there is movement of gene from one linkage group to another and lead to change the position of gene.

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2015 (Phase 1)
The movement of mineral ions into plant root cells as a result of diffusion is called

Options:
A	Osmosis
B	Active absorption
C Passive absorption
D	Endocytosis

The correct answer is:
Passive absorption

Solution:
A simple process of diffusion aids in the absorption of the mineral salts during its high concentration in the soil/outer solution than in the cell sap of the root cells. Diffusion is a passive absorption because the movement of mineral ions into plant root cells takes place without energy utilization.

Topic: Biology, Transport in Plants, NEET
The movement of sol particles under an applied electric field is called

Options:
A electro deposition
B electrodialysis
C electro-osmosis
D electrophoresis

The correct answer is:
electrophoresis

Solution:
Sol particles carry charge and thus, move towards opposite electrodes under the influence of electric field and the phenomenon is known as cataphoresis or electrophoresis.

Topic: Chemistry, Surface Chemistry, NEET
The mRNA codon which codes for the amino acid valine is

Options:
A GUC
B UGG
C CCA
D TTG

The correct answer is:
GUC

Solution:
Some amino acids are coded by more than one codon, as the genetic code is degenerative in nature. Amino acid valine is coded by four codons, GUU, GUC, GUA, and GUG.

Topic: Biology, Molecular Basis of Inheritance, NEET
The mRNA consisting of 282 nucleotides can produce a polypeptide chain of

Options:
A 282 amino acids
B 120 amino acids
C 93 amino acids
D 94 amino acids

The correct answer is:
93 amino acids

Solution:
Each codon is a triplet in nature therefore in the given chain of mRNA there must be total of 94 codons (282/3 = 94). But if we consider the last codon as a stop codon, then polypeptide synthesized by the given mRNA has 93 amino acids.

Topic: Biology, Molecular Basis of Inheritance, NEET
The mucosal lining of which organ differs from others in concern with the number of layer of the cell (simple/stratified):

Options:
A Stomach
B Small intestine
C PCT
D Oesophagus

The correct answer is:
Oesophagus

Solution:
Simple epithelia are found in the lining of the stomach (simple columnar epithelium without brush border), small intestine (simple columnar epithelium with brush border) and PCT (simple cuboidal epithelium with brush border).

Topic: Biology, Structural Organisation in Animals, NEET
The muscularis layer of alimentary canal has

Options:
A inner circular and outer longitudinal muscles
B inner longitudinal and outer circular muscles
C inner smooth and outer skeletal muscles
D inner skeletal and outer smooth muscles

The correct answer is:
inner circular and outer longitudinal muscles

Solution:
The Alimentary canal consists of four layers. The innermost layer i.e. surrounding the lumen is the mucosa layer. This layer consists of epithelium, Lamina propria and muscularis mucosae. The second layer surrounding the mucosa layer is sub mucosa which consists of MALT (Mucosal associated lymphoid tissue). The third layer is the muscularis layer. This is made up of two layers of muscles. Inner layer of circular muscles and outer is of longitudinal muscles. These layers are responsible for peristalsis. The stomach shows extra oblique layer too as churning movements are also seen in the stomach. In stomach the oblique muscles form the inner layer, middle is by circular and outer layer is of longitudinal muscles. The outermost layer or the fourth layer is the serosa.

Topic: Biology, Digestion and Absorption, NEET
The mustard flower has:

Options:
A 4 sepals, 4 petals and 4 stamens
B 6 sepals, 6 petals and 4 stamens
C 4 sepals, 4 petals and 6 stamens
D 2 sepals, 4 petals and 6 stamens

The correct answer is:
4 sepals, 4 petals and 6 stamens

Solution:
The mustard plant belongs to the family Brassicaceae or Cruciferae. In Brassicaceae, the plants have bisexual flowers with radial symmetry. The sepals are 4, arranged in two whorls (dimerous), the petals are 4, arranged singly and there are two small lateral stamens and two four large median stamens. These plants also have superior ovary with two carpels.

Topic: Biology, Morphology of Flowering Plants, NEET
The mutation is the phenomenon which results in alteration of DNA sequences and consequently results in a change in the

Options:
A genotype only.
B phenotype only.
C can be both genotype and phenotype.
D only characters.

The correct answer is:
can be both genotype and phenotype.

Solution:
In mutation chemical nature of genetic material which results in alteration of DNA sequences, gets altered as a result the phenotype of the individual may get changed.

Topic: Biology, Principles of Inheritance and Variation, NEET
The name of complex ion, FeCN63- is :

Options:
A Hexacyanoiron (III) ion
B Hexacyanitoferrate (III) ion
C Tricyanoferrate (III) ion
D Hexacyanidoferrate (III) ion

The correct answer is:
Hexacyanidoferrate (III) ion

Solution:
FeCN63-
Hexacyanidoferrate (III) ion

Topic: Chemistry, Coordination Compounds, NEET, NEET 2015 (Phase 2)
The name of Mary Mallon was associated with

Options:
A the transmission of typhoid
B the first typhoid patient
C renowned physician
D the family health worker

The correct answer is:
the transmission of typhoid

Solution:
Mary Mallon was born in 1869 in Ireland and emigrated to the US. She had worked in a variety of domestic positions for wealthy families prior to settling into her career as a cook. As a healthy carrier of Salmonella typhi her nickname of "Typhoid Mary" had become synonymous with the spread of disease.

Topic: Biology, Human Health and Diseases, NEET
The name of Mary Mallon was related with

Options:
A the carrier of typhoid
B volunteering for fight against typhoid
C a renowned physician, who for the first time treated typhoid patients
D sanitation worker, who cleaned the contaminated water and stopped the spread of typhoid disease.

The correct answer is:
the carrier of typhoid

Solution:
Mary Mallon was born in 1869 in Ireland and emigrated to the US in 188(D). She had worked in a variety of domestic positions for wealthy families prior to settling into her career as a cook. As a healthy carrier of Salmonella typhi, her nickname of "Typhoid Mary" had become synonymous with the spread of disease.

Topic: Biology, Human Health and Diseases, NEET
The name of Norman Borlaug is associated with:

Options:
A white revolution
B green revolution
C yellow revolution
D blue revolution.

The correct answer is:
green revolution

Solution:
Norman Borlaug originate dwarf wheat variety in Mexico and is considered the godfather of the Green Revolution. Dr Verghese Kurien, 'Father of White Revolution in India'. Hiralal Chaudhuri and Dr. Arun Krishnsnan known as Father of Blue revolution. Sam Pitroda is the father of Yellow Revolution.
Related Theory
The Yellow Revolution started in 1986-1987 to multiply the production of vegetable oils, especially mustard and sesame seeds.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2005
The names of Schleiden and Schwann are associated with

Options:
A Protoplasm as the physical basis of life
B Cell theory
C Theory of cell lineage
D Nucleus functions as control centre of cell

The correct answer is:
Cell theory

Solution:
Cell theory was proposed by Schleiden and Schwann (1839) according to which "All living organisms are composed of cells." Cell theory is also known as cell principle, cell doctrine etc.

Topic: Biology, Cell - The Unit of Life, NEET
The natural rubber is the polymer of

Options:
A 1,3-butadiene
B Polyamide
C Isoprene
D None of these

The correct answer is:
Isoprene

Solution:
Natural rubber is a polymer of isoprene.

Topic: Chemistry, Polymers, NEET
The natural selection that acts against change in the form and keeps the population constant through the time is

Options:
A Disruptive
B Directional
C Not acting
D Stabilizing

The correct answer is:
Stabilizing

Solution:
Natural selection of Neo-Darwinism operates through differential reproduction instead of survival of fittest. According to differential reproduction, best-adapted organisms reproduce at a higher rate and produce more offsprings than those which are less adapted. Three types of natural selection is observed and they are:
1. Stabilizing selection
2. Directional selection
3. Disruptive selection
Stabilizing selection is operating when the extreme phenotypes contribute fewer offsprings to next generation than those at the average phenotype. When selection acts to eliminate both extremes from an array of phenotypes. The frequency of the intermediate type which is already the most common, is increased.

Topic: Biology, Evolution, NEET
The nature of 2,4,6-trinitrophenol is

Options:
A Neutral
B Basic
C Acidic
D Weakly basic

The correct answer is:
Acidic

Solution:
2,4,6-trinitrophenol is picric acid. It is acidic in nature due to 3 (-M) group attached with phenol.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
The nature of π-bond present in oxy acids of Cl is

Options:
A pÏ-pÏ bond
B dπ-dπ bond
C pÏ-dÏ bond
D dÏ-fÏ bond

The correct answer is:
pÏ-dÏ bond

Solution:
pÏ-dÏ bond
Cl uses its vacant d-orbitals to form a Ï with p-orbitals of O .

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
The nature of curve of Ecello against log Kc is

Options:
A a straight line
B an elliptical curve
C a hyperbola
D parabola

The correct answer is:
a straight line

Solution:
E=E°-0.059nlog10Q
At equilibrium, E=0,Q=Kc
E°=0.059nlog10Kc
This equation is of the form y = mx, i.e., straight line, passing through origin.

Topic: Chemistry, Electrochemistry, NEET
The neck and bottom of a bottle are 3 cm and 15 cm in radius respectively. If the cork is pressed with a force 12 N in the neck of the bottle, then force exerted on the bottom of the bottle is

Options:
A 30 N

B 150 N
C 300 N
D 600 N

The correct answer is:
300 N

Solution:
Pressure at neck of bottle
p1=F1A1=F1Ï r12
Similarly, pressure at bottom of bottle
p2=F2A2=F2Ï r22
According to Pascal's law, liquids transmits pressure equal in all directions.
â´ F2A2=F2Ï r22 or F2=F1Ãr2r12
=12Ã1532=12Ã25=300 N

Topic: Physics, Mechanical Properties of Fluids, NEET
The need of calcium in human body can be fulfilled by either absorption of calcium from the digested food or by reabsorption of calcium from renal tubules, which is accompanied by:

Options:
A PTH
B Thymosin
C Mineral corticoids
D Thyrocalcitonin

The correct answer is:
PTH

Solution:
Thymosin is produced by the thymus gland and trigger the creation of T-cells, which are used by the immune system to fight disease.
Mineralocorticoids are a class of steroid hormones that regulate salt and water balances and also help in promoting sodium and potassium transport.
Thyrocalcitonin reduces the blood calcium level by increasing the absorption of calcium in the bone and reducing the absorption of calcium in the kidneys and the intestine.

Topic: Biology, Chemical Coordination and Integration, NEET
The nematode that infects the roots of tobacco plants and causes a great reduction in its yield is:

Options:
A Ancylostoma duodenale
B Meloidogyne incognita
C Wuchereria bancrofti
D Ascaris lumbricoides

The correct answer is:
Meloidogyne incognita

Solution:
A nematode Meloidogyne incognita infects the roots of tobacco plants and causes a great reduction in yield, by causing root-knot diseases.

Topic: Biology, Biotechnology and Its Applications, NEET
The nephridia of earthworm are concerned with

Options:
A Locomotion
B Excretion of nitrogenous wastes
C Digestion
D Respiration

The correct answer is:
Excretion of nitrogenous wastes

Solution:
The excretory organs of earthworm occur as segmentally arranged coiled tubules called nephridia. They are of three types: (i) septal nephridia, present on both the sides of intersegmental septa of segment 15 to the last that open into intestine, (ii) integumentary nephridia, attached to the lining of the body wall of segment 3 to the last that open on the body surface and (iii) pharyngeal nephridia, present as three paired tufts in the 4th, 5th, and 6th segments. Nephridia regulate the volume and composition of body fluids. A nephridium starts out like a funnel that collects excess fluid from the coelomic chamber. The funnel connects with a tubular part of the nephridium which delivers the wastes through a pore to the surface in the body wall into the digestive tube.

Topic: Biology, Excretory Products and their Elimination, NEET
The nerve centres which control the body temperature and the urge for eating are contained in

Options:
A hypothalamus
B pons
C cerebellum
D thalamus

The correct answer is:
hypothalamus

Solution:
Hypothalamus is the part of the sides and floor of the brain derived from the forebrain. It lies at the base of thalamus. The hypothalamus contains a number of centres, which control body temperature, urge for eating and drinking. It also contains several groups of neurosecretory cells, which secrete hormones called, hypothalamic hormones.

Topic: Biology, Neural Control and Coordination, NEET, NEET 2010 (Screening)
The nerve centres which control the body temperature and the urge for eating are contained in:

Options:
A Hypothalamus
B Pons
C Cerebellum
D Thalamus

The correct answer is:
Hypothalamus

Solution:
Hypothalamus contains important nerve centres that controls the body temperature, thirst, hunger and eating, water balance and sexual function.

Topic: Biology, Neural Control and Coordination, NEET
The nerve impulses are transmitted by the optic nerves to the ________ area of the brain.

Options:
A Wernicke's area
B motor area
C visual cortex area
D auditory area

The correct answer is:
visual cortex area

Solution:
The action potentials (impulses) are transmitted by the optic nerves to the visual cortex area of the brain, where the neural impulses are analyzed and the image formed on the retina is recognised based on earlier memory and experience. The Wernicke's area is responsible for the posterior speech area and the motor area is required for the transmission of the signal from the brain to other parts of the body. The auditory area is needed for the perception of the sound.

Topic: Biology, Neural Control and Coordination, NEET
The nervous system of Ctenophores is similar to

Options:
A Cnidaria
B Platyhelminthes
C Nemathelminthes
D Annelida

The correct answer is:
Cnidaria

Solution:
In Ctenophores absence of a brain or central nervous system is observed. The nervous system is in the form of a nerve net that looks like a cobweb. This is similar to Cnidarians.

Topic: Biology, Animal Kingdom, NEET
The "nervous system" of Hydra consists of

Options:
A polarized nerve cells
B nonpolarized nerve cells
C well defined nerves
D ganglionated nerve cord

The correct answer is:
nonpolarized nerve cells

Solution:
Hydra belonging to the phylum Cnidaria is a genus of fresh-water organisms. They are generally found in the tropical and temperate regions. A nerve net found in Hydra serves as a simple nervous system that connects photoreceptors and touch sensitive nerve cells. These cells are found in the body wall and tentacles. Brain and muscles are absent in Hydra. Also, the nervous system is not as complex found in higher animal nervous systems. The nerve cells of hydra are nonpolarized and signal can move in any direction.

Topic: Biology, Animal Kingdom, NEET
The net electric charge on DNA and histones is:

Options:
A both positive
B both negative
C negative and positive, respectively
D zero

The correct answer is:
negative and positive, respectively

Solution:
The net electric charge on DNA is negative and on histones is positive.

Topic: Biology, Molecular Basis of Inheritance, NEET
The net enthalpy change of a reaction is the amount of energy required to break all the bonds in reactant molecules minus amount of energy required to form all the bonds in the product molecules. What will be the enthalpy change for the following reaction: H2(g) + Br2(g) → 2HBr(g) Given that Bond energy of H2, Br2and HBr is 435 kJ mol–1, 192 kJ mol–1and 368 kJ mol–1respectively.

Options:
A ∆rH⊖= +134 kJ mol–1
B ∆rH⊖= +109 kJ mol–1
C ∆rH⊖= –134 kJ mol–1
D ∆rH⊖= –109 kJ mol–1

The correct answer is:
∆rH⊖= –109 kJ mol–1

Solution:
Correct Option is : (D)
∆rH⊖= –109 kJ mol–1

Topic: Chemistry, Thermodynamics (C), NEET
The net force acting is not zero on

Options:
A A retarding train
B A ball falling with terminal velocity
C A kite held stationary
D A truck moving with constant velocity

The correct answer is:
A retarding train

Solution:
The net force acting is not zero on a retarding train as a retarding train means it acquires some negative acceleration.

Topic: Physics, Laws of Motion, NEET
The net force acting on q0 is

Options:
A kqq02a2
B kqq0a/22
C zero
D kqq0a2

The correct answer is:
kqq0a2

Solution:
Force due to (1), (2), (4) & (5) will cancel each other. Only force due to charge (3) will not get cancelled, hence FNet=kqq0a2 .

Topic: Physics, Electrostatics, NEET
The net impedance of circuit (as shown in figure) will be:

Options:
A 25 Ω
B 102 Ω
C 15 Ω
D 55 Ω

The correct answer is:
55 Ω

Solution:
The formula to calculate the inductive impedance of the circuit is given by

XL=ωL ...1

The formula to calculate the capacitive impedance of the circuit is given by

XC=1ωC ...2

The formula to calculate the total impedance of the circuit can be written as

Z=R2+Xc-XL2= R2+1ωC-ωL2 ...3

Substitute the values of the given parameters into equation (3) to calculate the required net impedance of the circuit.

Z=10 Ω2+12π×50 Hz×103π×10-6 F-2π×50 Hz×50π×10-3 H2= 100+25 Ω=125 Ω=55 Ω

Topic: Physics, Alternating Current, NEET, NEET 2023 (All India)
The net magnetic flux through any closed surface is:

Options:
A Negative
B Zero
C Positive
D Infinity

The correct answer is:
Zero

Solution:
From Gauss law of magnetism, we know that the net magnetic flux through any closed surface is zero, i.e., ∮B→·ds→=0, because there are no magnetic monopoles. Here, B is magnetic field and s is surface area. The number of field lines entering the surface is equal to the field lines leaving the surface.

Topic: Physics, Electromagnetic Induction, NEET, NEET 2023 (All India)
The net magnetic moment of two identical magnets each of magnetic moment M0, inclined at 60° with each other is

Options:
A M0
B 2Â M0
C 3 M0
D 2M0

The correct answer is:
3 M0

Solution:
Magnetic dipole moment is a vector quantity.
Mnet= M02+M02+2M02 cosâ¡60o
= 3M02= 3 M0

Topic: Physics, Magnetic Properties of Matter, NEET
The net pressure gradient that causes the fluid to filter out from the glomeruli into the capsule is

Options:
A 50 mm Hg
B 75 mm Hg
C 10 mm Hg
D 30 mm Hg

The correct answer is:
10 mm Hg

Solution:
(i) Glomerular capillary pressure (60 mm Hg) favours filtration.
(ii) The colloidal osmotic pressure (due to plasma proteins, particularly albumin) acts against filtration. Its value is 32 mm Hg.
(iii) The filtrate pressure due to the glomerular filtrate filled in the Bowman's capsule also acts against filtration. Its value is 18 mmHg.
Net filtration pressure = 60 â (32 + 18) mm Hg
= 10 mm of Hg

Topic: Biology, Excretory Products and their Elimination, NEET
The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is:

Options:
A $50 \mathrm{~mm} \mathrm{Hg}$
B $75 \mathrm{~mm} \mathrm{Hg}$
C $20 \mathrm{~mm} \mathrm{Hg}$
D $30 \mathrm{~mm} \mathrm{Hg}$.

The correct answer is:
$20 \mathrm{~mm} \mathrm{Hg}$

Solution:
Kidneys help in the formation of urine, from the blood flowing through glomerular capillaries. About $20 \%$ of plasma fluid filters out into the Bowman's capsule through a thin glomerular-capsular membrane due to a net or effective filtration of about 10 to $15 \mathrm{~mm} \mathrm{Hg}$.
Related Theory
Urine is a waste byproduct formed from excess water and metabolic waste molecules during the process of renal system filtration. The primary function of the renal system is to regulate blood volume and plasma osmolarity, and waste removal via urine is essentially a convenient way that the body performs many functions using one process. Urine formation occurs during three processes: Filtration, Reabsorption and Secretion. (Ref. to Fig. 27.4)

Topic: Biology, Excretory Products and their Elimination, NEET, NEET 2005
The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

Options:
A

30 mm Hg

B

75 mm Hg

C

10 mm Hg

D

50 mm Hg

The correct answer is:

10 mm Hg

Solution:
(i) Glomerular capillary pressure (60 mm Hg) favours filteration.

(ii) The colloidal osmotic pressure (due to plasma proteins, particularly albumin) acts against filtration. Its value is â¼32ââmmââHg.

(iii) The filtrate pressure due to the glomerular filtrate filled in the Bowmanâs capsule also acts against filtration. Its value is â¼18ââmmââHg. Net filtration pressure

=60â(32+18)mmââHg

=10âmmââofââHg

Topic: Biology, Excretory Products and their Elimination, NEET
The net requirement of assimilatory power for the formation of 6 hexose molecules in maize plant is

Options:
A 72 ATP, 48 NADPH
B 90 ATP, 60 NADPH
C 108 ATP, 72 NADPH
D 180 ATP, 72 NADPH

The correct answer is:
180 ATP, 72 NADPH

Solution:
C4-plants (e.g., maize) require 30 ATP and 12 NADPH for the synthesis of one hexose molecule. Therefore, the synthesis of six hexose molecules requires 180 ATP and 72 NADPH.

Topic: Biology, Photosynthesis in Higher Plants, NEET
The network shown in the figure is part of a complete circuit. If at a certain instant the current I is 5 A and is decreasing at a rate of 103 A s-1, then the value of VB-VA is

Options:
A 10 V
B 20 V
C 15 V
D 25 V

The correct answer is:
15 V

Solution:
didt=103 A/s
Therefore induced emf across inductance, e=Ldidt
e=5×10-3103=5 V
Since, the current is decreasing, the polarity of this emf would be so as to increase the existing current. The circuit can be redrawn as
Now, VA-5+15+5=VB
VB-VA=15 V

Topic: Physics, Alternating Current, NEET