datavorous/entrance-exam-dataset huggingface dataset:
A good example of organic fertilizer, which improves phosphorus uptake, is

Options:
A VAM fungi
B Rhizobium
C Azosprillum
D None of these

The correct answer is:
VAM fungi

Solution:
In endocytic mycorrhiza, fungal hyphae present inside or between the cortex's cells act as biofertilizer. In many kinds of grass and some other crops, the fungal hyphae penetrate the cortical cells, which swell to form vesicles or arbuscules called vesicular-arbuscular mycorrhiza (VAM) and plays a significant role in phosphate nutrition in plants.

Topic: Biology, Microbes in Human Welfare, NEET
A good producer of citric acid is

Options:
A Aspergittus
B Pseudomonas
C Clostridium
D Saccharomyces

The correct answer is:
Aspergittus

Solution:
A good producer of citric acid is Aspergitus niger (a fungus). Clostridium produces butyric acid, Saccharomyces cerevisiae is used for bread baking fermenting malted cereals and fruit juices to produce ethanol. Pseudomonas (a bacterium) is used in vitamin- $B_{12}$ production.

Topic: Biology, Microbes in Human Welfare, NEET, NEET 2013 (All India)
A good producer of citric acid is

Options:
A Clostridium.
B Saccharomyces.
C Aspergillus.
D Pseudomonas.

The correct answer is:
Aspergillus.

Solution:
Citric acid is found in citrus fruits like lemon, oranges, tomatoes, etc. It is a weak organic tricarboxylic acid. Aspergillus niger is a fungus that is used to produce citric acid in the industry. Clostridium is used to produce butyric acid while Saccharomyces cerevisiae is used to produce ethanol and Pseudomonas is a bacterium that is used for vitamin B12 production.

Topic: Biology, Microbes in Human Welfare, NEET
A good source of lipase is

Options:
A Saliva
B Pancreatic juice
C Bile
D Gastric juice

The correct answer is:
Pancreatic juice

Solution:
The pancreas is the chief organ for the secretion of lipase.

Topic: Biology, Digestion and Absorption, NEET
A gorilla-like appearance with huge hands and legs is due to excess secretion of:

Options:
A LH
B GH
C MSH
D FSH

The correct answer is:
GH

Solution:
A gorilla-like appearance with huge hands and legs is a symptom of a disease called Acromegaly. It occurs due to hypersecretion of growth hormone or somatotrophin in adults. Since the growth is complete in adults, the hypersecretion of growth hormone causes increased thickness of bones especially in their hand and feet. A person from acromegaly has protruding jaw (prognathism, a slanting forehead and thickened supra-orbital ridges. This gives the appearance of an ape (gorilla)

Topic: Biology, Chemical Coordination and Integration, NEET
A gram +ve bacteria differs from a Gram -ve bacteria because of

Options:
A Cell membrane
B Cytoplasm
C Flagella
D Cell wall

The correct answer is:
Cell wall

Solution:
Bacteria can be classified into two groups on the basis of the differences in the cell envelopes and the manner in which they respond to the staining procedure developed by Christian Gram. Those that takes up the gram stain are called gram positive and the other that do not takes up gram stain are called gram negative bacteria.

Topic: Biology, Cell - The Unit of Life, NEET
A gramophone record is revolving with an angular velocity $\omega$. A coin is placed at a distance $\mathrm{r}$ from the centre of the record. The static coefficient of friction is $\mu$. The coin will revolve with the record if

Options:
A $\mathrm{r}=\mu g \omega^2$
B $\mathrm{r} < \frac{\omega^2}{\mu g}$
C $r \leq \frac{\mu g}{\omega^2}$
D $r \geq \frac{\mu g}{\omega^2}$

The correct answer is:
$r \leq \frac{\mu g}{\omega^2}$

Solution:
When the disc spins the frictional force between the gramophone record and coin is $\mu \mathrm{mg}$
The coin will revolve with record, if
$$
\begin{aligned}
F_{\text {frictional }} & \geq F_{\text {centripetal }} \\
\mu m g & \geq m \omega^2 r \\
\frac{\mu g}{r} & \geq \omega^2
\end{aligned}
$$

Topic: Physics, Laws of Motion, NEET, NEET 2010 (Screening)
A graph attained when the percentage saturation of haemoglobin with oxygen is plotted against the partial pressure of oxygen is called ___.

Options:
A Oxygen dissolution curve
B Oxygen dissociation curve
C Carbon dioxide dissolution curve
D Carbon dioxide dissociation curve

The correct answer is:
Oxygen dissociation curve

Solution:
A graph attained when the percentage saturation of haemoglobin with oxygen is plotted against the partial pressure of oxygen is called oxygen dissociation curve.

Topic: Biology, Breathing and Exchange of Gases, NEET
A graph between the square of the speed of a particle moving along a straight line and the distance s moved is shown in the figure. The acceleration of the particle in km h-2 is â

Options:
A 2250
B 225
C -2250
D -225

The correct answer is:
-2250

Solution:
âµÂ Â v2=u2+2as
â for v2-s graph slope = 2a
from graph
v2=-27000.6s+3600
âµ Slope =27000.6=2a
âÂ Â Â a=Â -2700012=-2250

Topic: Physics, Motion In One Dimension, NEET
A graph plotted between log t50% vs. log concentration is a straight line. What conclusion can you draw from the given graph

Options:
A n=1,t1/2=0.693k
B n=2,t1/2=1a
C n=1,t1/2=1k.a
D none of these

The correct answer is:
n=1,t1/2=0.693k

Solution:
t1/2αa1-n
or t1/2=ka1-n
logt1/2=logk+(1-n)loga
so slope =1-n
or 1-n=0
or n=1

Topic: Chemistry, Chemical Kinetics, NEET
A graph showing variation of osmotic pressure (π) versus molar concentration 'C' of an aqueous solution at temperature T is given below

The slope of the line represents

Options:
A solution constant R
B absolute temperature T
C RT
D degree of ionization of solute

The correct answer is:
RT

Solution:
Here the slope of the line represents RT.
As π=CRT
Using y = mx + C
Slope = RT.

Topic: Chemistry, Solutions, NEET
A gravitational field is present in a region and a mass is shifted from $A$ to $B$ through different paths as shown. If $W_1, W_2$ and $W_3$ represent the work done by the gravitational force along the respective paths, then

Options:
A $\mathrm{W}_1=\mathrm{W}_2=\mathrm{W}_3$
B $\mathrm{W}_1>\mathrm{W}_2>\mathrm{W}_3$
C $\mathrm{W}_1>\mathrm{W}_3>\mathrm{W}_2$
D $\mathrm{W}_1 < \mathrm{W}_2 < \mathrm{W}_3$

The correct answer is:
$\mathrm{W}_1=\mathrm{W}_2=\mathrm{W}_3$

Solution:
Since, gravitational force is a conservative force and hence the work done is independent of the paths covered between points $A$ and $B$.

Topic: Physics, Work Power Energy, NEET, NEET 2022 (Phase 2)
A greenish yellow gas reacts with an alkali metal hydroxide to form a halite which can be used in fireworks and safety matches. The gas and halides respectively are –

Options:
A Br2, KBrO3
B Cl2, KClO3
C I2, NalO3
D Cl2, NaClO3

The correct answer is:
Cl2, KClO3

Solution:
Greenish yellow gas is Cl2 and KClO3 is used is fireworks and safety matches.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
A ground substance secreted by connective tissue accumulated between cells and fibers is

Options:
A polysaccharide
B lipid
C protein
D steroid

The correct answer is:
polysaccharide

Solution:
These cells also secrete modified polysaccharide, which accumulates between cells and fibers and acts as a matrix.

Topic: Biology, Structural Organisation in Animals, NEET
A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity. To which group should this impurity belong?

Options:
A Group 13 (Boron Group)
B Group 15 (Nitrogen Group)
C Group 16 (Oxygen Group)
D Group 17 (Halogens)

The correct answer is:
Group 15 (Nitrogen Group)

Solution:
Correct Option is : (B)
Group 15 (Nitrogen Group)

Topic: Chemistry, Solid State, NEET
A group of fungi with septate mycelium and sexual reproduction either absent or not known is

Options:
A Phycompycetes (algal fungi)
B Basidiomycetes (club fungi)
C Deuteromycetes (imperfect fungi)
D Ascomycetes (sac fungi)

The correct answer is:
Deuteromycetes (imperfect fungi)

Solution:
In Deuteromycetes only asexual mode of reproduction is recognized, with the help of asexual spores called conidia hence they are also known as imperfect fungi. The members of this class when showing the sexual stages are moved to Ascomycetes and Basidiomycetes. Except for Phycomycetes which has aseptate and coenocytic mycelium, other classes have branch and septate mycelium.

Topic: Biology, Biological Classification, NEET
A group of individuals from different species living in the same habitat and exhibiting functional interactions is called:

Options:
A Biotic community
B Population
C Ecosystem
D None of the above

The correct answer is:
Biotic community

Solution:
A group of individual of same species living in a habitat forms a population and group of different population living in same habitat and exhibiting functional interaction forms a biotic community. Group of different population together forms a community.

Topic: Biology, Organisms and Populations, NEET
A group or population of individuals having the potential to interbreed and produce sustainable and fertile offspring is called ____.

Options:
A Species
B Gametes
C Public
D Genera

The correct answer is:
Species

Solution:
A group or population of individuals having the potential to interbreed and produce sustainable and fertile offspring is called species

Topic: Biology, Evolution, NEET
A growth curve of a plant is shown below. The mathematical expression for this growth curve will be:

Options:
A Lt = L0 + rt
B W1 = W0 et
C W1 = W0 ert
D Lt = L0 + t

The correct answer is:
W1 = W0 ert

Solution:
W1 = W0 ert
W1 = final size (weight, height, number, etc.)
W0 = initial size at the beginning of the period
r = growth rate
t = time of growth
e = base of natural logarithms

Topic: Biology, Plant - Growth and Development, NEET
A gun fire bullets each of mass 1âg with velocity of 10 m s-1 by exerting a constant force of 5âg weight. Then, the number of bullets fired per second is (take g=10 m s-2)

Options:
A 50
B 5
C 10
D 25

The correct answer is:
5

Solution:
Mass of Each bullet, m=1 g=0.001 kg.
Velocity of bullet, v=10 m s-1
Applied force, F=5 g wt
=51000Ã10=0.05 N.
Let n bullets are fired per second, then
Force = rate of change of linear momentum
i.e., F=nÃmv
â´ Number of bullets fired per second,
n=Fmv=0.050.001Ã10=5

Topic: Physics, Center of Mass Momentum and Collision, NEET
A gun (mass = M) fires a bullet (mass = m ) with speed Vr relative to the barrel of the gun which is inclined at an angle of 60Â° with horizontal. The gun is placed over a smooth horizontal surface. Find the recoil speed of the gun.

Options:
A V=12mVrm+M
B V=12mVrm-M
C V=12MVrm+M
D None of the above

The correct answer is:
V=12mVrm+M

Solution:
Using conservation of linear momentum in the horizontal direction.
mVrcos60°-V= MV
mVrcos 60om+M=V
V=12mVrm+M

Topic: Physics, Center of Mass Momentum and Collision, NEET
A gymnast is able to balance his body upside down even in the total darkness because of:

Options:
A Cochlea
B Vestibular apparatus
C Tectorial membrane
D Organ of Corti

The correct answer is:
Vestibular apparatus

Solution:
The vestibular apparatus is present in the inner ear. It is situated above the cochlea. It is made up of three semi-circular canals and otolith organ. The vestibular apparatus is responsible for providing a sense of balance and spatial orientation. This helps in coordinating movement with balance.

Topic: Biology, Neural Control and Coordination, NEET, NEET 2015 (Phase 1)
a H2O2+O3→H2O+2O2
b H2O2+Ag2O→2Ag+H2O+O2
Role of hydrogen peroxide in the above reactions is respectively:

Options:
A Oxidizing in a and reducing in b
B reducing in a and oxidizing in b
C reducing in a and b
D oxidizing in (a) and b

The correct answer is:
reducing in a and b

Solution:
O3 is reduced into O-2 ion and
Ag2O is reduced to Ag so
H2O2 is reducing agent in both a and b

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET, NEET 2014
a H2O2+O3→H2O+2O2
(b) H2O2+Ag2O→2Ag+H2O+O2
Role of hydrogen peroxide in the above reactions is respectively

Options:
A Reducing in (a) and oxidizing in (b)
B Oxidizing in (a) and reducing in (b)
C Reducing in (a) and (b)
D Oxidizing in (a) and (b)

The correct answer is:
Reducing in (a) and (b)

Solution:
In both these reactions hydrogen peroxide acts as a reducing agent, as O3 and Ag2O are reduced.
H2O2+O3→H2O+2O2
H2O2+Ag2O→2Ag+H2O+O2

Topic: Chemistry, Redox Reactions, NEET
A haloalkane can be reduced to an alkane with the help of HI in presence of red phosphorus. Red phosphorus

Options:
A acts as reducing agent
B acts as dehydrating agent
C is used to regenerate HI
D acts as a catalyst

The correct answer is:
is used to regenerate HI

Solution:
Here red phosphorus is used to regenerate HI as follows
RBr+2HI→RH+HBr+I2
P4+6I2→4PI3
PI3+3H2O→3HI+H3PO3

Topic: Chemistry, Hydrocarbons, NEET
A halogen compound (X) on alkaline hydrolysis, followed by acidification gives acetic acid. The compound (X) is

Options:
A CH3CCl3
B CH3CHCl2
C ClCH2CH2Cl
D ClCH2CHCl2

The correct answer is:
CH3CCl3

Solution:

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
A health disorder that results from the deficiency of thyroxin in adults and characterized by
(i) a low metabolic rate
(ii) increase in body weight
(iii) tendency to retain water in tissues is

Options:
A hypothyroidism
B simple goitre
C myxoedema
D cretinism

The correct answer is:
myxoedema

Solution:
Myxoedema (Gulls disease) occurs due to the deficiency of thyroxine in adults, it causes low BMR (by 30-40\%), low body temperature, tendency to retain water in tissues, reduced heart rate, pulse rate, blood pressure and cardiac output, low sugar and iodine level in blood, muscular weakness and oedema (accumulation of interstilial fluid that causes the facial tissues to swell and look fluffy).
Decrease secretion of thyroxine hormone from thyroid gland causes hypothyroidism.
simple goitre is caused by lower intake of iodine through diet.
Cretinism occurs due to hyposecretion of thyroxine during the growth years or birth.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2009 (Screening)
A healthy adult human excretes (on an average) ___ gm of urea/ day.

Options:
A 5-10
B 20-25
C 25-30
D 1-2

The correct answer is:
25-30

Solution:
A healthy adult human excretes (on an average) 25-30 gm of urea/ day.

Topic: Biology, Excretory Products and their Elimination, NEET
A healthy male has got normal sperm count. However, he is unable to inseminate. Which of the following assisted reproductive technology can be best suggested in this case?

Options:
A GIFT
B ZIFT
C IVF
D AI

The correct answer is:
AI

Solution:
The best suggested artificial reproductive technology, in this case, would be artificial insemination (AI). In this technique, the semen is collected from the husband or a donor and artificially introduced in the vagina. GIFT stands for gamete intra-fallopian tube transfer. ZIFT stands for the zygote intra-fallopian tube transfer. IVF stands for in-vitro fertilization

Topic: Biology, Reproductive Health, NEET
A healthy person and an individual with emphysema having equal body mass were made to perform an exercise of the same amount. Their rate of oxygen entering the blood in the lungs was measured and is shown in the table below.

Healthy Person	Person with emphysema

O2 entering blood per minute	22 units	12 units

Identify the statement that best explains the above outcome.

Options:
A The healthy person has a slower breathing rate.
B The healthy person has a smaller lung volume
C The person with emphysema has damaged alveoli
D The person with emphysema has larger surface area in alveoli

The correct answer is:
The person with emphysema has damaged alveoli

Solution:
Emphysema is a condition where the elastin fibres surrounding the alveoli are damaged. As a result, the alveoli are not able to contract to its full extent causing reduction in volume of gas exchange. This ultimately leads to low oxygen-carrying capacity. From the table, we can see that the affected individual is showing very low exchange rate compared with the healthy one. Gas exchange site is the alveoli in the lungs. We can conclude that his alveoli are not functioning properly.

Topic: Biology, Breathing and Exchange of Gases, NEET
A healthy person eats the following diet$5 \mathrm{gm}$ raw sugar, $4 \mathrm{gm}$ albumin, $10 \mathrm{gm}$ pure buffalo ghee adultrated with $2 \mathrm{gm}$ vegetable ghee (hydrogenated vegetable oil) and $5 \mathrm{gm}$ lignin. How many calories he is likely to get?

Options:
A 126
B 164
C 112
D 144

The correct answer is:
144

Solution:
For carbohydrates, calorific value $=$ 4
Thus,
Raw sugar (carbohydrate) produce $=5 \times 4=20 \mathrm{kcal}$
Albumin (protcin) produce $=4 \times 4$ $=16 \mathrm{kcal}$
Ghee and vegetable oil (fat) $=9 \times$ $(10+2)=108 \mathrm{kcal}$
Total calories yield $=20+16+108$ $=144 \mathrm{kcal}$

Topic: Biology, Biomolecules (B), NEET, NEET 2013 (Karnataka)
A heat engine is a device

Options:
A which converts mechanical energy into heat energy
B which converts heat energy into mechanical energy
C absorbs heat from a sink at a lower temperature and rejects to the source at high temperature
D none of the above

The correct answer is:
which converts heat energy into mechanical energy

Solution:
Heat engine is a device which converts heat into work (mechanical energy) continuously through a cyclic process.

Topic: Physics, Thermodynamics, NEET
A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

Options:
A One fourth
B Halved
C Doubled
D Four times

The correct answer is:
Doubled

Solution:
Resistance of full coil = R
Resistance of each half piece = R/2
∴ H 2 H 1 = V 2 t R / 2 × R V 2 t = 2 1
∴ H 2 = 2 H 1
Heat generated will now be doubled.

Topic: Physics, Current Electricity, NEET
A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

Options:
A One fourth
B Halved
C Doubled
D Four times

The correct answer is:
Doubled

Solution:
The resistance of full coil = R
The resistance of each half piece = R2
∴ H2H1=V2tR/2×RV2t=21
∴ H2=2H1
The heat generated will now be doubled.

Topic: Physics, Current Electricity, NEET
A heating coil is immersed in a 100g sample of H2O(l) at 1 atm and 100oC in a closed vessel.In this heating process, 60% of the liquid is converted to the gaseous form at constant pressure of 1 atm. The densities of liquid and gaseous water under these conditions are 1000 kg/m3 and 0.60 kg/m3 respectively. Magnitude of the work done for the process is: (takeâ1âatmâ=â105âNm2)

Options:
A 4997 J
B 4970 J
C 9994 J
D 1060 J

The correct answer is:
9994 J

Solution:
w=-PextVf-Vi
=-10560×10-30.60+40×10-31000-100×10-31000
=-105100×10-3+0.04×10-3-0.1×10-3 ;w=9994 J

Topic: Chemistry, Thermodynamics (C), NEET
A heavy uniform chain lies on a horizontal tabletop. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is

Options:
A 20%
B 25%
C 35%
D 15%

The correct answer is:
20%

Solution:
The force of friction on the chain lying on the table should be equal to the weight of the hanging chain. Let

Ï= mass per unit length of the chain

Î¼= coefficient of friction

l= length of the total chain

x= length of hanging chain

Now,âÎ¼(lâx)âÏg=xÏgââorââÎ¼(lâx)=x âââÎ¼l=(Î¼+1)xââorââx= Î¼l (Î¼+1) â´ââx= 0.25l (0.25+1) = 0.25l 1.25 =0.2l â´ââ x l =0.2=20%

Topic: Physics, Laws of Motion, NEET
A heavy uniform chain lies on a horizontal tabletop. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is

Options:
A 20 %
B 25 %
C 35 %
D 15 %

The correct answer is:
20 %

Solution:
Let the length of the chain be l and mass m. Let a part x of the chain can hang over one edge of table having coefficient of friction Î¼
â´ Pulling force, F=mxlg
and friction force, f=Î¼N=Î¼ml(l-x)g
For equilibrium, F=f, hence
mxl.g=Î¼mll-xg=0.25mll-xg
â x=l5 or xl=15=20%

Topic: Physics, Laws of Motion, NEET
A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is

Options:
A 20%
B 25%
C 35%
D 15%

The correct answer is:
20%

Solution:
The force of friction on the chain lying on the table should be equal to the weight of the hanging chain. Let

Ï= mass per unit length of the chain

Î¼= coefficient of friction

l= length of the total chain

x= length of hanging chain

Now,âÎ¼(lâx)âÏg=xÏgââorââÎ¼(lâx)=x âââÎ¼l=(Î¼+1)xââorââx= Î¼l (Î¼+1) â´ââx= 0.25l (0.25+1) = 0.25l 1.25 =0.2l â´ââ x l =0.2=20%

Topic: Physics, Laws of Motion, NEET
A helicopter is flying horizontally at an altitude of 2 km with a speed of 100 ms-1. A packet is dropped from it. The horizontal distance between the point where the packet is dropped and the point where it hits the ground is (g=10 ms-2)

Options:
A 2 km
B 0.2 km
C 20 km
D 4 km

The correct answer is:
2 km

Solution:
t = 2h g = 2 2000 10 = 20 sec
x = 100 20 = 2 km

Topic: Physics, Motion In Two Dimensions, NEET
A helicopter of mass 2000 kg rises with a vertical acceleration of 15 m/s². The total mass of the crew and passengers is 500 kg. What is the magnitude and direction of the action of the rotor of the helicopter on the surrounding air? (Given g = 10 m/s²)

Options:
A 5 × 104N, upward
B 6.25 × 104N, downward
C 6.25 × 104N, upward
D 7.5 × 104N, downward

The correct answer is:
6.25 × 104N, upward

Solution:
Correct Option is : (C)
6.25 × 104N, upward

Topic: Chemistry, Laws of Motion, NEET
A heterozygous father suffers from an autosomal dominant trait. Which of these statements is true?

Options:
A All sons will suffer from the disease while the daughters will not suffer from the disease
B All daughters will suffer from the disease while the sons will not suffer from the disease
C None of his children will suffer from the disease
D Some of his children may suffer from the disease

The correct answer is:
Some of his children may suffer from the disease

Solution:
When a specific disease/condition/defect is inherited through the autosomal chromosomes, such disorders are called autosomal disorders. And if it is dominant then it will be expressed in heterozygous and homozygous condition.
If the father is heterozygous for an autosomal dominant trait, the trait will be expressed. Since, the trait is dominant and only one allele is present there is a 50% chance that his children will have the autosomal trait. This is because, each child receives half of the genome from father and other half from mother. When the father produces gametic cells, 50% will have the autosomal trait and other 50% will not have it.

Topic: Biology, Principles of Inheritance and Variation, NEET
A heterozygous pea plant with violet flowers was crossed with a homozygous pea plant with white flowers. Violet is dominant over white. Which one of the following represents the expected combinations among 40 progenies formed?

Options:
A All 40 produced violet flowers
B All 40 produced white flowers
C 30 produced violet and 10 produced white flowers
D 20 produced violet and 20 produced white flowers

The correct answer is:
20 produced violet and 20 produced white flowers

Solution:
Genotype of heterozygous violet flower is $\mathrm{V}$
Genotype of homozygous white flower is $v v$
Both white and violet flowers will be produced in equal proportion $(20: 20)$
Out of 40 progenies
The expected ratio of violet and white flower plant is $1: 1$.

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2023 (Manipur)