datavorous/entrance-exam-dataset huggingface dataset:
Five factors are known to affect HardyâWeinberg equilibrium. Three of them are: gene migration or gene flow, genetic drift and mutation. Rest two are

Options:
A Somatic variation and natural selection
B Genetic recombination and random breeding
C Genetic recombination and natural selection
D Lack of random breeding and Saltation

The correct answer is:
Genetic recombination and natural selection

Solution:
The five factors affecting HardyâWeinberg equilibrium are
A. Gene migration and gene flow
B. Genetic drift
C. Mutation
D. Genetic recombination
E. Natural selection

Topic: Biology, Evolution, NEET
Five moles of an ideal monoatomic gas with an initial temperature of 150 Â°C expand and in the process absorb 1500 J of heat and does 2500 J of work. The final temperature of the gas in Â°C is (ideal gas constant, R=8.314 J K-1 mol-1 ).

Options:
A 134
B 126
C 144
D 166

The correct answer is:
134

Solution:
According to thermodynamics first law, ∆Q=∆U+∆W
Given, that
∆Q=+1500 J
∆W=+2500 J
∴ 1500=∆V+2500
⇒ ∆U=-1000 J
∵ ∆U=nCV∆T ....(i)
∵ For monoatomic gas,
CV=32R=1.5×8.314
CV=12.471
∴ From Equation (i),
∴-1000=5×12.471×T2-T1
Or T2=150-10005×12.471=134 °C

Topic: Physics, Thermodynamics, NEET
Five moles of hydrogen gas are heated from 30 Â°C to 60 Â°C at constant pressure. Heat given to the gas is (given R= 2 cal mol-1 Â°C-1)

Options:
A 750 cal

B 630 cal

C 1050 cal

D 1470 cal

The correct answer is:
1050 cal

Solution:
Î Q p = Î¼ C p Î T = Î¼ Î³ Î³ - 1 R Î T
â´ Î Q p = 5 Ã 7 5 7 5 - 1 Ã 2 Ã 3 0
= 5 Ã 2 Ã 7 5 Ã 5 2 Ã 3 0 = 1 0 50 cal
(as Î¼ = 5 mol and Î³ = 7 / 5 for H2)

Topic: Physics, Thermodynamics, NEET
Five persons A, B, C, D and E are pulling a cart of mass 100 kg on a smooth surface and the cart is moving with an acceleration of 3 m s-2 in the east direction. If another person F comes and starts pulling the cart with a force of 100 N due west, then the acceleration of the cart will be

Options:
A 2.5 m s-2
B 1 m s-2
C 2 m s-2
D 4 m s-2

The correct answer is:
2 m s-2

Solution:
Due to the five people the net force on the cart is

F1=100×3=300 N due east

After the force applied by the person F, the net force is

Fnet=300-100=200 N

Fnet=200=100×a

⇒a=2 m s-2

Topic: Physics, Laws of Motion, NEET
Five resistances are connected as shown in the figure. The equivalent resistance between points A and C is

Options:
A 44 Î©
B 203 Î©
C 212 Î©
D 30 Î©

The correct answer is:
203 Î©

Solution:
As, the given case is of Wheatstone bridge, so equivalent resistance is given by
Req=(R1+R2)(R4+R3)R1+R2+(R4+R3)
The equivalent resistance between point A and C
Req=(4+6)(8+12)4+6+(8+12)
=10Ã2010+20=10Ã2030=203 Î©

Topic: Physics, Current Electricity, NEET
Fixed volume of 0.1 M benzoic acid solution is added into 0.2 M sodium benzoate solution and formed a 300 ml, resultant acidic buffer solution. If pH of this buffer solution is 4.5 then find added volume of benzoic acid â
Given: pK a âbenzoicâacid=4.2

Options:
A 100 ml
B 150 ml
C 200 ml
D None of these

The correct answer is:
150 ml

Solution:
pH=pKa+log⁡saltacid
4.5=4.2+log⁡saltacid
0.3=log⁡saltacid
saltacid=2
0.3×300-v0.1×v=2
v=150 ml

Topic: Chemistry, Ionic Equilibrium, NEET
Flag - pole interaction is present in

Options:
A Boat form of cyclohexane
B Chair form of cyclohexane
C Anti form of n-butane
D Fully eclipsed form of n-butane

The correct answer is:
Boat form of cyclohexane

Solution:
Flagpole interaction is present in Boat form of cyclohexane

Topic: Chemistry, General Organic Chemistry, NEET
Flagella of prokaryotic and eukaryotic cells differ in:

Options:
A type of movement and placement in cell
B location in cell and mode of functioning
C microtubular organization and type of movement
D microtubular organization and function.

The correct answer is:
microtubular organization and type of movement

Solution:
The difference between prokaryotic and eukaryotic flagella
$\begin{array}{|l|l|}
\hline \text{Bacterial flagella (Prokaryotic Flagella)} & \text{Eukaryotic flagella } \\
\hline \text{Made up of protein flagellin} & \text{Tubulin (9+2 microtubule arrangement)} \\
\hline \text{Rotatory movement} & \text{Bending movement.} \\
\hline \text{Proton driven} & \text{ATP driven.} \\
\hline
\end{array}$

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2004
Flagella of prokaryotic and eukaryotic cells differ in

Options:
A Type of movement and placement in cell
B Location in cell and mode of functioning
C Micro-tubular organisation and type of movement
D Micro-tubular organisation and function

The correct answer is:
Micro-tubular organisation and type of movement

Solution:
The eukaryotic flagella have a microtubular arrangement and are basically made up of tubulin proteins. The prokaryotic flagella are made up of flagellin proteins.

Topic: Biology, Cell - The Unit of Life, NEET
Flagellated male gametes are present in all the three of which one of the following sets?

Options:
A Zygnema, Saprolegnia and Hydrilla
B Fucus, Marsilea and Calotropis
C Riccia, Dryopteris and Cycas
D Anthoceros, Funaria and Spirogyra.

The correct answer is:
Riccia, Dryopteris and Cycas

Solution:
The male gametes of bryophytes are biflagellate, and those of Pteridophytes are multiflagellate, except selaginella having biflagellate gametes. The male gametes of gymnosperms are non motile except those of Cycas having multiciliate gametes.
Zygnema, Spirogyra, Saprolegnia -Green algae
Hydrilla, Calotropis - Angiosperm Fucus - Brown algae
Marsilea, Dryopteris, Anthoceros Pteridophyte
Riccia, Funaria - Bryophyta
Cycas-Gymnosperm

Topic: Biology, Plant Kingdom, NEET, NEET 2007
Flame cells and metagenesis are found respectively in:

Options:
A Taenia and Hydra
B Ascaris and Starfish
C Taenia and Obelia
D Earthworm and Obelia

The correct answer is:
Taenia and Obelia

Solution:
Metagenesis (or alternation of generation):
- Coelenterates exhibit two body forms - polyp and medusa.
- Polyp = Sessile and cylindrical like Hydra, Adamsia.
Medusa = Free swimming, umbrella-shaped like Aurelia (jellyfish).
- Those cnidarians in which both polyp and medusa alternate with each other, are said to exhibit metagenesis.
Example - Obelia.
Platyhelminthes: They have specialised cells called
flame cells help in osmoregulation and excretion. Examples: Taenia (Tapeworm), Fasciola (Liver fluke).

Topic: Biology, Animal Kingdom, NEET
Flashlight equipped with a new set of batteries produces bright white light. As the batteries were out

Options:
A The light intensity gets reduced with no change in its colour
B Light colour changes first to yellow and then red with no change in intensity
C It stops working suddenly while giving white light
D Colour changes to red and also intensity gets reduced

The correct answer is:
Colour changes to red and also intensity gets reduced

Solution:
As batteries wear out, the temperature of the filament of flashlight attains a lesser value, therefore the intensity of radiation reduces. Also dominating wavelength (λm) in the spectrum, which is the red colour, increases.

Topic: Physics, Thermal Properties of Matter, NEET
Flippers of Penguins and Dolphins are examples of

Options:
A Convergent evolution
B Industrial melanism
C Natural selection
D Adaptive radiation

The correct answer is:
Convergent evolution

Solution:
The anatomically different structures evolved towards the same function due to adaptations to similar needs or similar habitats. This is called the convergent evolution because anatomically dissimilar and origin-wise different structures converge towards the common function. Hence, analogous structures are the result of convergent evolution.

Flippers of Penguins and Dolphins: Penguin (a bird) and Dolphin (a mammal), both have flippers that serve the common function of swimming although have different internal structures and origins.

Topic: Biology, Evolution, NEET, NEET 2020 (Phase 1)
Floral diagram does not show

Options:
A cohesion and adhesion
B aestivation
C colour and shape of petals
D all of these

The correct answer is:
colour and shape of petals

Solution:
The floral diagram is used to describe the position of different floral parts within a flower bud before it has opened. In this diagram, the sepals are shown outside while petals, stamens, and carpels are shown lying within each other. They are represented in concentric circles. The floral diagram also represents that floral parts are fuse or free. But it doesn't show the color and shape of the petals.

Topic: Biology, Morphology of Flowering Plants, NEET
Floral features are chiefly used in Angiosperms identification because

Options:
A Flowers are of same colours
B Flowers can be safely pressed
C Reproductive parts are more stable and conservative than vegetative parts
D Flowers are freely available

The correct answer is:
Reproductive parts are more stable and conservative than vegetative parts

Solution:
In flowers, there are four different types of whorls like calyx, corolla, stamens, and pistil. The reproductive parts (floral features) are more stable and conservative than vegetative parts, which exhibit changes due to the environmental factors quite readily. So floral features are more reliable.

Topic: Biology, Morphology of Flowering Plants, NEET
Floral features are commonly used for identification of angiosperms because

Options:
A reproductive parts are more conservative
B flowers can be safely pressed
C flower are nice to work with
D flowers have various colours and scents

The correct answer is:
reproductive parts are more conservative

Solution:
Floral feature are more preferred and used for classification of angiosperms as they are more conservative. They are stable and not effected by changing environmental conditions.

Topic: Biology, The Living World, NEET
Floral formula of cabbage is

Options:
A
B
C `
D

The correct answer is:

Solution:
Cabbage is a leafy green plant. Also found in red and white colour. The densed-leaved heads of the plant are consumed as vegetable. It is closely related to broccoli and cauliflower. Cabbage belongs to the plant family Brassicaceae. The floral formula for this plant family is . Mustard is also included in this family.

Topic: Biology, Morphology of Flowering Plants, NEET
Floridean starch has structure similar to

Options:
A Amylopectin and glycogen
B Mannitol and algin
C Laminarin and cellulose
D Starch and cellulose

The correct answer is:
Amylopectin and glycogen

Solution:
Floridean starch is the stored food for the members of class Rhodophyceae, and it is structurally similar to amylopectin and glycogen, i.e. it is a homopolymer of α-glucose but has a branching pattern intermediate to amylopectin and glycogen.

Topic: Biology, Plant Kingdom, NEET, NEET 2020 (Phase 1)
Flourine is a stronger oxidising agent than chlorine because :
(a) F-F bond has a low enthalpy of dissociation.
(b) Flouride ion $\left(\mathrm{F}^{-}\right)$has high hydration enthalpy
(c) Electron gain enthalpy of flourine is less negative than chlorine.
(d) Flourine has a very small size.
Choose the most appropriate answer from the options given :

Options:
A (a) and (b) only
B (a) and (c) only
C (a) and (d) only
D (b) and (c) only

The correct answer is:
(a) and (b) only

Solution:
Even though fluorine has lower electron gain enthalpy than chlorine, it is a strong oxidising agent. The correct reason that can be attributed for this behaviour is:
(i) Small size of fluorine, makes it suitable for its high hydration enthalpy.
(ii) The bond dissociation enthalpy of fluorine is lower than chlorine due to high lone pair lone pair repulsion.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET, NEET 2022 (Phase 2)
Flow rate of blood through a capillary of cross-sectional area of 0.25 m2 is 100 cm3/s. The velocity of flow of blood is

Options:
A 1 mm/s
B 0.2 mm/s
C 0.3 mm/s
D 0.4 mm/s

The correct answer is:
0.4 mm/s

Solution:
For the blood flow in capillary, Volumetric flow rate = velocity Ã area of cross-section
v=QA=100Ã10â60.25
Q=Av
v=400 Ã10â3 mm/s=0.4 mm/s

Topic: Physics, Mechanical Properties of Fluids, NEET
Flower is perigynous and the ovary is said to be half-inferior in

Options:
A Rose
B Peach
C Plum
D All of these

The correct answer is:
All of these

Solution:
A half-inferior ovary (also known as half-superior, sub-inferior or partially inferior) is embedded or surrounded by the receptacle. Such flowers are termed perigynous or half-epigynous. The flower is perigynous, and the ovary is said to be half-inferior in rose, peach and plum.

Topic: Biology, Morphology of Flowering Plants, NEET
Flowering plants have developed many devices to discourage self-pollination and to encourage cross-pollination except

Options:
A Dicliny
B Dichogamy
C Homogamy
D Self Incompatibility.

The correct answer is:
Homogamy

Solution:
Homogamy means maturation of both male and female structures at the same time This favours self pollination. For autogamy, plants show some contrivances like monocliny, homomgamy, cleistogamy and bud conditions.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Flowers are always wind-pollinated in the family

Options:
A Compositae
B Brassicaceae
C Solanaceae
D Poaceae

The correct answer is:
Poaceae

Solution:
Pollination is the process of transfer of pollen grain from the anther to the stigma. When this transfer occurs between different flowers, there are agents that help in transferring the pollen grain. These agents can be biotic or abiotic.
Compositae and Brassicaceae are families of subdivision Angiosperm that use insects as agents of pollination. Solanaceae also depends on insects but mostly on honey bees for pollination.
Poaceae family flowers are always pollinated by the wind. Their flowers are anemophilous.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Flowers are zygomorphic in

Options:
A gulmohur
B tomato
C datura
D mustard

The correct answer is:
gulmohur

Solution:
When a flower can be divided into two similar halves only in one particular vertical plane, it is called zygomorphic, e.g., bean, pea, gulmohur, Cassia etc.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2011 (Screening)
Flowers are zygomorphic in

Options:
A Aloe
B Indigofera
C Solanum nigrum
D Colchicum

The correct answer is:
Indigofera

Solution:
Flowers of the Fabaceae family have bilateral symmetry so, they are called zygomorphic. Datura, mustard, and tomato have actinomorphic flowers.

Topic: Biology, Morphology of Flowering Plants, NEET
Flowers of Pea possess the same symmetry as that of

Options:
A Datura
B Mustard
C Cassia
D Tomato

The correct answer is:
Cassia

Solution:
When a flower can be divided into two similar halves only in one particular vertical plane, it is zygomorphic, e.g., pea, Gulmohar, bean, cassia. When a flower can be divided into two equal radial halves in any radial plane passing through the center, it is said to be actinomorphic, e.g., mustard, datura, chili. A flower is asymmetric (irregular) if it cannot be divided into two similar halves by any vertical plane passing through the center, as in canna.

Topic: Biology, Morphology of Flowering Plants, NEET
Flowers that are small, closed flowers with unexposed reproductive organs are called ___ flowers.

Options:
A Chasmogamous
B Anisogamous
C Cleistogamous
D None of the above

The correct answer is:
Cleistogamous

Solution:
Flowers that are small, closed flowers with unexposed reproductive organs are called Cleistogamous flowers.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Flowers that have open petals such that the reproductive organs are exposed are called ____ flowers.

Options:
A normal
B Chasmogamous
C anisogamous
D cleistogamous

The correct answer is:
Chasmogamous

Solution:
Flowers that have open petals such that the reproductive organs are exposed are called Chasmogamous flowers

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by

Options:
A Water
B Bee
C Wind
D Bat

The correct answer is:
Wind

Solution:
Wind pollination or anemophily is seen in flowers having a single ovule in each ovary, and numerous flowers packed in an inflorescence. Wind pollination is a non-directional pollination. Wind-pollinated flowers are small, non-scented and colourless.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2017
Fluid mosaic model of plasma membrane shows that

Options:
A quasi-fluid nature of lipid enables lateral movement of proteins within the overall bilayer.
B the lateral movement within the membrane is measured as its fluidity.
C the fluid nature of membrane is important for growth, formation of intercellular junctions, secretion, endocytosis, cell division, etc.
D All of the above

The correct answer is:
All of the above

Solution:
Singer and Nicolson states that cell membrane is considered to be highly fluid. The integral proteins are capable of showing lateral diffusion in the lipid bilayer, studies with NMR (Nuclear Magnetic Resonance) and ESR (Electron Spin Resonance) technique indicate that lipid bilayer has many dynamic motional properties. Quasifluid nature of lipid enable lateral movement of proteins within the overall bilayer The fluid nature of membrane is important for growth, formation of intercellular junctions, secretion endocytosis, cell division etc.

Topic: Biology, Cell - The Unit of Life, NEET
Fluorine exhibits only –1 oxidation state whereas other halogens exhibit + 1, + 3, + 5 and + 7 oxidation states also. Explain.

Options:
A Fluorine has the highest electron affinity among halogens.
B Fluorine has the smallest atomic size among halogens.
C Fluorine forms more stable compounds in the –1 oxidation state.
D Fluorine has the highest ionization energy among halogens.

The correct answer is:
Fluorine has the highest electron affinity among halogens.

Solution:
Correct Option is : (A)
Fluorine has the highest electron affinity among halogens.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Fluorine has low electron affinity than chlorine because of

Options:
A bigger radius of fluorine, less electron density
B smaller radius of fluorine, high electron density
C smaller radius of chlorine, high electron density
D smaller radius of chlorine, less electron density

The correct answer is:
smaller radius of fluorine, high electron density

Solution:
Fluorine has low EA than chlorine because of smaller size of fluorine and compact 2p-orbital where interelectronic repulsion is more

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Fluorobenzene is prepared conveniently

Options:
A by heating benzene diazonium tetrafluoroborate
B by treating benzene with fluorine
C by the action of phenol with SF4
D by treating benzene with CH3F in presence of anhydrous AlCl3

The correct answer is:
by heating benzene diazonium tetrafluoroborate

Solution:
Fluorobenzene is prepared conveniently by heating benzene diazonium tetrafluoroborate

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Focal lengths of two lens are f and f' and dispersive powers are Ï0 and 2Ï0 respectively. To form achromatic combination from these

Options:
A f â² = 2 f
B f â² = - 2 f
C f ′ = f / 2
D f ′ = - f / 2

The correct answer is:
f ′ = - 2 f

Solution:
For achromatic combination
f f â² = - Ï Ï â²
but Ï Ï â² = Ï 0 2 Ï 0 = 1 2
- f f â² = 1 2 or f â² = - 2 f

Topic: Physics, Ray Optics, NEET
Foetal ejection reflex in human female is induced by

Options:
A pressure exerted by amniotic fluid
B release of oxytocin from pituitary
C fully developed foetus and placenta
D differentiation of mammary glands

The correct answer is:
fully developed foetus and placenta

Solution:
Oxytocin (child birth hormone) secreted by neurohypophysis of pituitary gland stimulates contraction of uterius muscles, including labour pain for child birth, when secretion of progesterone hormone declines, making the end of pregnancy. As the sensory impulse of increasing labour pain reaches hypothalamus, more and more oxytocin is released from posterior pituitary under a positive feedback regulation childbirth, it dilates the cervix (vaginal stretching).

Topic: Biology, Human Reproduction, NEET, NEET 2009 (Screening)
Foetal ejection reflex in human female is induced by

Options:
A Pressure exerted by amniotic fluid
B Release of oxytocin from pituitary
C Fully developed foetus and placenta
D Differentiation of mammary glands

The correct answer is:
Release of oxytocin from pituitary

Solution:
Foetal ejection reflex is an accelerated active labour and birth which is induced by release of oxytocin from pituitary. Oxytocin (child birth hormone), secreted by neurohypophysis of pituitary gland, stimulates contraction of uterus muscles, including labour pain for child birth, when secretion of progesterone hormone declines, making the end of pregnancy. As the sensory impulse of increasing labour pain reaches hypothalamus, more and more oxytocin is released from posterior pituitary under a positive feedback regulation.

Topic: Biology, Chemical Coordination and Integration, NEET
Foetal ejection reflex is produced by

Options:
A Fully developed foetus only
B Placenta only
C Fully developed foetus and placenta
D Fully developed foetus, placenta and endometrium

The correct answer is:
Fully developed foetus and placenta

Solution:
The process of delivery of the foetus (childbirth) is called parturition. Parturition is induced by a complex neuroendocrine mechanism. The signals for parturition originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex. This triggers the release of oxytocin from the maternal pituitary.

Topic: Biology, Human Reproduction, NEET
Foetal sex can be determined by examining cells from the amniotic fluid by looking for

Options:
A Chiasmata
B Kinetochore
C Autosomes.
D Barr bodies

The correct answer is:
Barr bodies

Solution:
Barr body is a structure consisting of a condensed X chromosome that is found in nondividing nuclei of female mammals. Amniotic fluid contains foetal skin cells, that are stained to determine the presence of sex chromatin (Barr body). The presence of Barr body indicates that the developing foetus is female with two X-Chromosome.

Topic: Biology, Reproductive Health, NEET
Fog is a colloidal solution of:

Options:
A Liquid in gas
B Gas in liquid
C Solid in gas
D Gas in gas

The correct answer is:
Liquid in gas

Solution:
Fog is a colloidal solution in which liquid droplets are dispersed in gas.

Topic: Chemistry, Surface Chemistry, NEET, NEET 2016 (Phase 1)
Foliar roots and foliar buds of Bryophyllum helps in

Options:
A Photosynthesis
B Food storage
C Cloning
D Buoyancy

The correct answer is:
Cloning

Solution:
Foliar roots and foliar buds of Bryophyllum are vegetative propagules from which new plants are produced. This method of vegetative propagation produces new plants identical to parent hence known as clones.

Topic: Biology, Reproduction in Organisms, NEET
Following are events taking place for blood glucose regulation-

(i) increase in blood glucose

(ii) increase in circulating glucagon

(iii) release of glucose from glycogen

(iv) decrease in blood glucose level

Select the option depicting the correct sequence of these events.

Options:
A (iv), (iii), (ii), (i)
B (iii), (i), (ii), (iv)
C (iv), (ii), (iii), (i)
D (i), (ii), (iv), (iii)

The correct answer is:
(iv), (ii), (iii), (i)

Solution:
When the blood glucose level goes down, glucagon is secreted by the alpha cells of pancreas. Glucagon signals the liver to break down glycogen to glucose and release it into the blood stream. Thus bringing the level of glucose back to normal.

Topic: Biology, Chemical Coordination and Integration, NEET