datavorous/entrance-exam-dataset huggingface dataset:
The increasing order of atomic radii of the following Group 13 elements is

Options:
A Al < Ga < In < Tl
B Ga < Al < In < Tl
C Al < In < Ga < Tl
D Al < Ga < Tl < In

The correct answer is:
Ga < Al < In < Tl

Solution:
As on moving down the group atomic size increase so Ga < Al < In < Tl. Here size of Ga is less than that of Al due to poor screening effect in Ga.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
The increasing order of basicity for the following intermediates is (from weak to strong)

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

The correct answer is:
(v) < (iii) < (ii) < (iv) < (i)

Solution:
As Basicity is inversly proportional to electronegativity, s% and directly proportional to electron releasing group effect (+I, +R)

Topic: Chemistry, General Organic Chemistry, NEET
The increasing order of crystal field splitting strength of the given ligands is

Options:
A NH3<Cl-<CN-<F-<CO<H2O
B F-<Cl-<NH3<CN-<H2O<CO
C Cl-<F-<H2O<NH3<CN-<CO
D CO<CN-<NH3<H2O<F-<Cl-

The correct answer is:
Cl-<F-<H2O<NH3<CN-<CO

Solution:
In general, the ligands can be arranged in a series in the order of increasing field strength as
I-<Br-<SCN-<Cl-<S2-<F-<OH-<C2O42-<H2O<NCS-<EDTA4-<NH3<en<NO2-<CN-<CO

Topic: Chemistry, Coordination Compounds, NEET
The increasing order of pKa of the following amino acids in aqueous solution is
Gly, Asp, Lys, Arg

Options:
A Asp < Gly < Arg < Lys
B Arg < Lys < Gly < Asp
C Gly < Asp < Arg < Lys
D Asp < Gly < Lys < Arg

The correct answer is:
Asp < Gly < Lys < Arg

Solution:
Order of acidic strength
Ka∝ number of —COOH groups
∝1no.of—NH2groups
So, pKa∝1Ka
Asp < Gly < Lys < Arg

Topic: Chemistry, Biomolecules, NEET
The increasing order of PKb for the following compounds will be
(1) NH2-CH=NH,
(2)
(3) CH3NHCH3

Options:
A (2)<(1)<(3)
B (3)<(1)<(2)
C (2)<(3)<(1)
D (1)<(2)<(3)

The correct answer is:
(2)<(1)<(3)

Solution:
pKbâ1Kbâ1Basic strength
As basic nature decreases in the order (2) > (1) > (3). So pKb order is as follows
(2)<(1)<(3)

Topic: Chemistry, General Organic Chemistry, NEET
The increasing order of reactivity among group 1 elements is Li < Na < K < Rb < Cs, whereas that among group 17 elements is F > Cl > Br > I. Which of the following options explain this distinction?

Options:
A Group 1 elements are non-metals, while Group 17 elements are metals.
B Group 1 elements have higher electronegativity, while Group 17 elements have lower electronegativity.
C Group 1 elements have one valence electron, while Group 17 elements have seven valence electrons.
D Group 1 elements have higher ionisation energies, while Group 17 elements have lower ionisation energies.

The correct answer is:
Group 1 elements have one valence electron, while Group 17 elements have seven valence electrons.

Solution:
Correct Option is : (C)
Group 1 elements have one valence electron, while Group 17 elements have seven valence electrons.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
The increasing order of the atomic radii of the following elements is
A  C
B  O
C  F
D  Cl
E  Br

Options:
A (b)<(c)<(d)<(a)<(e)
B (d)<(c)<(b)<(a)<(e)
C (c)<(b)<(a)<(d)<(e)
D (a)<(b)<(c)<(d)<(e)

The correct answer is:
(c)<(b)<(a)<(d)<(e)

Solution:
Generally, in a period on moving left to right atomic radius decreases while in a group on moving top to bottom atomic radius increases
Br>Cl>C>O>F
e>d>a>b>c

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
The increasing order of the first ionisation enthalpies of the elements B,âP, S and F is:

Options:
A B<S<P<F
B F<S<P<B
C P<S<B<F
D B<P<S<F

The correct answer is:
B<S<P<F

Solution:
In general:
(i) First ionisation energy IE1 or enthalpy, increases along the period from left to right, but due to half-field configuration of Pâatom, it has higher IE1 than of S-atom.
(ii) IE1 decreases as we move down the group from top to bottom.
(iii) More be the size of atom, less be the IE1.
Hence, correct order of IE1 is B<S<P<F.
IE1 for (in kJ mol-1)
B=800
S=999.4
P=1012
F=1680.8

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
The increasing order of the pKa values of the following compounds is

Options:
A D < A < C < B
B B < C < D < A
C C < B < A < D
D B < C < A < D

The correct answer is:
B < C < A < D

Solution:
pKaâ1Ka,Kaâ stability of phenoxide ion â dispersal of âve charge
â Stability of phenoxide ion = B > C > A > D
â Ka= B > C > A > D
â pKa= B < C < A < D

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
The increasing order of the rate of HCN addition to compound A-D is

A.HCHO B.CH3COCH3

C.PhCOCH3 D.PhCOPh

Options:
A A<B<C<D
B D<B<C<A
C D<C<B<A
D C<D<B<A

The correct answer is:
D<C<B<A

Solution:
It is nucleophilic addition whose reactivity depends upon the electrophilic character of carbonyl carbon and steric hindrance only. Hence, the order of ease of the reaction would be
HCHO>CH3COCH3>AB PhCOCH3>PhCOPhCD

Topic: Chemistry, Aldehydes and Ketones, NEET
The increasing order of volatility of hydrides of group 16 elements is -

Options:
A H2O < H2Te < H2Se < H2S
B H2SÂ <Â H2OÂ <Â H2SeÂ <Â H2Te
C H2O < H2S < H2Se < H2Te
D H2TeÂ <Â H2SeÂ <Â H2SÂ <Â H2O

The correct answer is:
H2O < H2Te < H2Se < H2S

Solution:
Volatility of hydrides VI-A =H2S>H2Se>H2Te>H2O
Volatilityâ1molecular weight
But H2O is least volatile due to H- Bond.
So, order of volatility is H2O<H2Te<H2Se<H2S

Topic: Chemistry, s Block Elements, NEET
The increasing order of wavelength for He+ ion, neutron (n) and electron e − particles, moving with the same velocity is

Options:
A λHe+<λe<λn
B λHe+=λn=λe
C λHe+<λn<λe
D λe<λn<λHe+

The correct answer is:
λHe+<λn<λe

Solution:
âµÎ»=hmâv
(As per de-Broglie relation)
â´ Î»â1m (h and v are constant)
Also, âµ mHe +>mn>me
â´ Î»He +<Î»n<Î»e

Topic: Chemistry, Structure of Atom, NEET
The index to the plant species found in a particular area is provided in:

Options:
A Flora
B Monographs
C Manuals
D Catalogue

The correct answer is:
Flora

Solution:
Flora contains the actual account of habitat and distribution of plants of a given area. These provide the index to the plant species found in a particular area. Manuals are useful in providing information for identification of names of species found in an area. Monographs contain information on any one taxon.

Topic: Biology, The Living World, NEET
The Indian Agricultural Research Institute, New Delhi has released several vegetable crops that are rich in vitamins and minerals. Which of the following vegetables are not correctly grouped with the nutrient that they have been enriched with?

Options:
A Tomato: vitamin A
B Spinach: iron and calcium
C Bathua: vitamin C
D Pumpkin: vitamin A

The correct answer is:
Tomato: vitamin A

Solution:
The Indian Agricultural Research Institute, New Delhi has released several vegetable crops that are rich in vitamins and minerals. e.g., vitamin A enriched carrots, spinach, pumpkin; vitamin C enriched bitter gourd, bathua, mustard, tomato; iron and calcium-enriched spinach and bathua; and protein-enriched beans - broad, lablab, French and garden peas.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
The Indian population was approximately _______ at the time of independence.

Options:
A 450 million
B 225 million
C 950 million
D 350 million

The correct answer is:
350 million

Solution:
Indian population was approximately 350 million at the time of our independence reached close to the billion marks by 2000 and crossed 1 billion in May 2000.

Topic: Biology, Reproductive Health, NEET
The inductance of a solenoid of mean diameter 1 cm, 1 m long, wound with 1000 turns of copper wire will be

Options:
A 0.1 mH

B 0.2 mH

C 0.3 mH

D 0.4 mH

The correct answer is:
0.1 mH

Solution:
L=μAN2l⁡=4π×10-7×π/4×10-4×1061
= π 2 × 1 0 - 5 H = 0 . 1 mH

Topic: Physics, Electromagnetic Induction, NEET
The industry which is devoted to the catching, processing or selling of fish, shellfish or other aquatic animals is called

Options:
A Fishery
B Pisciculture
C Aquaculture
D All of the above

The correct answer is:
Fishery

Solution:
The fishery is an industry devoted to the catching, processing, or selling of fish, shellfish, or other aquatic animals. Aquaculture involves the production of useful aquatic plants and animals by the proper utilization of small and large bodies of water. Pisciculture is the production of fishes.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
The infamous name Mary Mallon is associated as a carrier of

Options:
A Salmonella typhi, a bacterium
B Salmonella paratyphi, a bacterium
C Herpes virus
D Ascariasis, helminth disease

The correct answer is:
Salmonella typhi, a bacterium

Solution:
Mary Mallon, also known as Typhoid Mary, was an Irish-born cook believed to have infected 53 people, three of whom died, with typhoid fever, and the first person in the United States identified as an asymptomatic carrier of the disease.
As a healthy carrier of Salmonella typhi her nickname of "Typhoid Mary" had become synonymous with the spread of disease, as many were infected due to her denial of being ill.

Topic: Biology, Human Health and Diseases, NEET
The infamous name Mary Mallon is associated with which disease?

Options:
A Typhoid
B AIDS
C Herpes
D Ascariasis

The correct answer is:
Typhoid

Solution:
A classic case in medicine, that of Mary Mallon nicknamed Typhoid Mary, is worth mentioning here. She was a cook by profession and was a typhoid carrier who continued to spread typhoid for several years through the food she prepared.

Topic: Biology, Human Health and Diseases, NEET
The infectious agent that is smaller to viruses and caused potato spindle tuber disease is

Options:
A Virion
B Prions
C Virusoid
D Viroid

The correct answer is:
Viroid

Solution:
Viroids are smallest pathogen and causes diseases only in plants. Viroids are naked RNA molecules which are not enclosed by protein capsid, they are made up of 249 to 399 nucleotides only. Discovered by T. O . Diener.

Topic: Biology, Biological Classification, NEET
The infectious stage of Plasmodium that enters the human body is

Options:
A Sporozoites
B Female gametocytes
C Male gametocytes
D Trophozoites

The correct answer is:
Sporozoites

Solution:
Human infection (transmission) occurs when a female mosquito inoculates the sporozoites of Plasmodium from its salivary gland into the blood of man. The sporozoites invade the cells of the liver and reproduce through multiple fission or sporulation (asexual reproduction) called pre-erythrocytic, exoerythrocytic, or intrahepatic schizogony or merogony. Each sporozoite produces daughter merozoites. These merozoites are released into the bloodstream through the infected liver cell. Once the merozoites are in the blood, they quickly invade RBCs and become trophozoites.

Topic: Biology, Human Health and Diseases, NEET, NEET 2020 (Phase 1)
The infective stage of malarial parasite Plasmodium that enters human body is

Options:
A Merozoite
B Sporozoite
C Trophozoite
D Minuta form

The correct answer is:
Sporozoite

Solution:
When a mosquito bites a healthy human being, the sporozoites (infectious form) are injected into the body. They reach the liver and start multiplying and forms merozoites in liver cells. They rupture the liver cells and escape into the blood stream. They digest human blood and produce a toxic metabolic waste called haemozoin. They digest haemoglobin and release high quantities of free heme which is toxic to cells, so the parasites convert it into an insoluble crystalline form called haemozoin. Then, merozoites infect red blood cells, and the parasites multiply asexually, to develop into ring forms called trophozoites .

Topic: Biology, Human Health and Diseases, NEET
The infertility in male due to very low sperm counts in the ejaculates or inability to inseminate the female partner,can be corrected by:

Options:
A artificial insemination
B intra-uterine insemination
C zygote intra Fallopian transfer
D both a and b are used

The correct answer is:
both a and b are used

Solution:
The infertility in male is due to very low sperm counts in the ejaculates or inability to inseminate the female partner, can be corrected byusing artificial insemination (AI) technique. This include intra-uterine insemination (IUI).

Topic: Biology, Reproductive Health, NEET
The inflammation of joints due to the deposition of uric acid is called:

Options:
A Muscular spasm
B Tetany
C Gout
D Osteoporosis

The correct answer is:
Gout

Solution:
Gout is an inherited disorder of purine metabolism, occurring especially in men. Body forms excess amounts of uric acid and the crystals of sodium urate are deposited in the synovial joints, giving rise to severe arthritis. It generally affects one or two joints only. It is very painful, particularly at night, and makes movement difficult. Redness and tenderness may be noticed in and about the affected joint.

Topic: Biology, Locomotion and Movement, NEET
The inheritance of flower colour in Antirrhinum (dog flower) is an example of ______.

Options:
A incomplete dominance
B co-dominance
C multiple alleles
D linkage

The correct answer is:
incomplete dominance

Solution:
As Mendel, on crossing homozygous members for contrasting characters, the dominant trait is expressed in the heterozygous or hybrid condition. Incomplete dominance is a deviation of Mendel's law of dominance where the heterozygous individual instead of expressing the dominant trait, expresses a trait which is a mix of the parent traits. Two types of flower colors are produced in Antirrhinum (dog flower) - red and white. When these two flower types are crossed, the hybrid forms a pink flower showing incomplete dominance.

Topic: Biology, Principles of Inheritance and Variation, NEET
The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. The character studied in the pedigree analysis is equivalent to

Options:
A Quantitative trait
B Mendelian trait
C Polygenic trait
D Maternal trait

The correct answer is:
Mendelian trait

Solution:
Pedigree analysis provides information regarding inheritance of particular traits or diseases and using it we can predict the possibility of appearance of any traits in the new generation. The analysis chart is a visual tool for observing biological relationship within and between families and to understand the mode of inheritance of genetic diseases. Whereas quantitative trait, polygenic trait and maternal traits are not studied by pedigree analysis. In it, male is represented by a square and female by a circle. Affected individual (having certain genetic disorder) are presented as dark/solid filled figure. Non-affected individual is shown as empty figure.
The characteristic studied using pedigree analysis are similar to Mendelian trait and follow its inheritance pattern.

Topic: Biology, Principles of Inheritance and Variation, NEET
The initial concentration of N2O5in the following first order reaction: N2O5(g) → 2 NO2(g) + (1/2) O2(g) was 1.24 × 10–2mol L–1at 318 K. The concentration of N2O5after 60 minutes was 0.20 × 10–2mol L–1.Calculate the rate constant of the reaction at 318 K.

Options:
A k = 0.0304 min-1
B k = 0.0605 min-1
C k = 0.0936 min-1
D k = 0.0112 min-1

The correct answer is:
k = 0.0304 min-1

Solution:
Correct Option is : (A)
k = 0.0304 min-1

Topic: Chemistry, Chemical Kinetics, NEET
The initial rate of hydrolysis of methyl acetate (1 M) by a weak acid (HA, 1 M) is 1/100th of that of a strong acid (HX, 1M), at 25°C. The Ka of HA is

Options:
A 1×10-4
B 1×10-5
C 1×10-6
D 1×10-3

The correct answer is:
1×10-4

Solution:
Ka=Cα2=1×(0.01)2=1×10-4

Topic: Chemistry, Ionic Equilibrium, NEET
The initial step in the digestion of milk in human is carried out by?

Options:
A Lipase
B Trypsin
C Rennin
D Pepsin

The correct answer is:
Rennin

Solution:
The enzyme rennin is responsible for the coagulation of milk by converting soluble milk protein (casein) to insoluble milk protein (paracasien). This is the initial step of digestion of milk.

Rennin is present in the infants stomach. In adults pepsin works in place of rennin.

Topic: Biology, Digestion and Absorption, NEET, NEET 2014
The innermost wall layer of microsporangia which provides nutrition to the developing pollen grain is

Options:
A Epidermis
B Endothecium
C Middle layer
D Tapetum

The correct answer is:
Tapetum

Solution:
Microsporangia is surrounded by four-layered walls, epidermis, endothecium, middle layer and innermost is tapetum. Tapetum provides nutrition to the developing microspore mother cell.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
The input of A and B for the given Boolean expression is

A+B¯.A.B¯=1

Options:
A 0,0
B 0,1
C 1,0
D 1,1

The correct answer is:
0,0

Solution:
Given expression is
A+BÂ¯.A.BÂ¯
Substitute A=0 and B=0 in above expression,
=0+0Â¯.0.0Â¯
=0Â¯. 0Â¯=1. 1=1
Hence, (0, 0) is the input of the given Boolean expression.

Topic: Physics, Semiconductors, NEET
The input resistance of a common emitter amplifier is 330 Î© and the load resistance is 5 kÎ© . A change of base current is 15 Î¼A results in the change of collector current 1 mA. The voltage gain of the amplifier is

Options:
A 1000
B 10001
C 1010
D 1100

The correct answer is:
1010

Solution:
Given
∆Ic=1 mA=10-3 A
∆ Ib=15 μA=15×10-6 A
RL=5 kΩ=5×103 Ω
Ri=330 Ω
The voltage gain of an amplifier is given by
Ar=∆Ic×RL∆Ib×Ri
=10-3×5×10315×10-6×330
=10000099≈1010

Topic: Physics, Semiconductors, NEET
The input signal is given to a CE amplifier having a voltage gain of 150 is Vi=2cos⁡15t+π3. The corresponding output signal will be:

Options:
A 75cos⁡15t+2π3
B 2cos⁡15t+5π6
C 300cos⁡15t+4π3
D 300cos⁡15t+π3

The correct answer is:
300cos⁡15t+4π3

Solution:
CE amplifier causes phase difference of π=180o so Vout=300cos⁡15t+π3+π

Topic: Physics, Semiconductors, NEET, NEET 2015 (Phase 2)
The input signal is given to a CE amplifier having a voltage gain of 150 is Vi=2cosâ¡15t+Ï3. The corresponding output signal will be:

Options:
A 75cos⁡15t+2π3
B 2cos⁡15t+5π6
C 300cos⁡15t+4π3
D 300cos⁡15t+π3

The correct answer is:
300cos⁡15t+4π3

Solution:
CE amplifier causes phase difference of π=180o so Vout=300cos⁡15t+π3+π

Topic: Physics, Semiconductors, NEET
The inputs to the digital circuit are shown below. The output Y is

Options:
A A+B+C¯
B A+BC¯
C A¯+B¯+C¯
D A¯+B¯+C

The correct answer is:
A¯+B¯+C¯

Solution:
The output of digital circuit can be given as,
Y=AB¯+C¯
It will be same as, Y=A¯+B¯+C¯

Topic: Physics, Semiconductors, NEET
The instantaneous angular position of a point on a rotating wheel is given by the equation $Q(t)=2 t^3-6 t^2$
The torque on the wheel becomes zero at

Options:
A $t=0.5 \mathrm{~s}$
B $t=0.25 \mathrm{~s}$
C $t=2 \mathrm{~s}$
D $t=1 \mathrm{~s}$

The correct answer is:
$t=1 \mathrm{~s}$

Solution:
According to question, torque, $\tau=0$
Its means that, $\alpha=0$
$$
\alpha=\frac{d^2 \theta}{d t^2}
$$
Given
So
$$
\theta(t)=2 t^3-6 t^2
$$
$$
\begin{aligned}
\frac{d \theta}{d t} & =6 t^2-12 t \\
\frac{d^2 \theta}{d t^2} & =12 t-12 \quad\left(\because \alpha=\frac{d^2 \theta}{d t^2}=0\right) \\
12 t-12 & =0 \\
t & =1 \mathrm{~s}
\end{aligned}
$$

Topic: Physics, Rotational Motion, NEET, NEET 2011 (Screening)
The instantaneous current and voltage of an AC circuit are given by i=10sinâ314t A and V=100sin314t V. What is the power dissipation in the circuit?

Options:
A 100 W
B 500 W
C 300 W
D 200 W

The correct answer is:
500 W

Solution:
Given,
I=10sin314t A and V=100sin314t V
Comparing with I=I0sinωt and V=V0sinωt,we get
∴I0=10 A and V0=100 V
⇒Irms=102 A, Vrms=1002 V,Phase difference ϕ=0o∴ Power dissipated Pav=Vrms× Irms ×cosϕ                                                    =(102)(1002)cos0o                                                   =500 W

Topic: Physics, Alternating Current, NEET
The instantaneous source of energy is

Options:
A proteose
B fructose
C sucrose
D glucose

The correct answer is:
glucose

Solution:
The carbohydrate glucose is a hexose sugar monomer which after ingestion gets absorbed directly and used as a substrate in the respiration process to generate ATP as a source of energy. Thus, making glucose instantaneous source of energy. Whereas fructose and sucrose are to be converted to glucose to enter the energy-releasing process.

Topic: Chemistry, Biomolecules, NEET
The instantaneous velocity of point B of the given rod of length 0.5 m is 3 m s-1 in the represented direction. The angular velocity of the rod for the minimum velocity of the end A is

Options:
A 1.5 rad s-1
B 5.2 rad s-1
C 2.5 rad s-1
D None of these

The correct answer is:
5.2 rad s-1

Solution:
If rod is rotated about end A, then vertical component of velocity, vâ¥ of end a will be zero.
â´Ï=vsinâ¡60ol=3 v2l
=3Ã32Ã0.5=5.2 rad s-1

Topic: Physics, Rotational Motion, NEET
The instrument used by doctors for endoscopy works on the principle of

Options:
A total internal reflection
B reflection
C refraction
D none of the above

The correct answer is:
total internal reflection

Solution:
An optical fibre is a transparent thin fibre, usually made of glass or plastic for transmitting light.
Optical fibres are used in imagine optics, and work on the principle of total internal reflection of light.
Bundles of fibres are used along with lenses for long, thin imagine devices called endoscopes, which are used to view objects through a small hole.
Medical endoscopes are used for minimally invasive exploratory or surgical procedures (endoscopy).

Topic: Physics, Ray Optics, NEET
The intensity at the maximum in a Young's double slit experiment is I0. Distance between two slits is d=5λ, where λ is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance D=10d ?

Options:
A I0
B I04
C 34I0
D I02

The correct answer is:
I02

Solution:
In YDSE Imax=I0
Path difference at a point in front of one of shifts is
∆x=dyD=dd2D=d22D ( Here  y= d 2 )
∆x=d2210d=d20=5λ20=λ4
Path difference is
ϕ=2πλΔx=2πλλ4
ϕ=π2
So intensity at that point is
I=Imaxcos2θ2
I=I0cos2π4=I02

Topic: Physics, Wave Optics, NEET, NEET 2016 (Phase 1)
The intensity of radiation emitted by the sun has its maximum value at a wavelength of 510 nm and that emitted by the north star has the maximum value at wavelength of 350 nm. If these stars behave like black bodies, then the ratio of surface temperatures of the sun and north star is

Options:
A 1.46
B 0.69
C 1.21
D 0.83

The correct answer is:
0.69

Solution:
From Wien's displacement law
λmT=constant
⇒ λm1T1=λm2T2
Or T1T2=λm2λm1 ...(i)
Here, λm1=510 nm, λm2=350 nm
So, on putting these values in Eq. (i)
T1T2=350510 ⇒ T1T2=3551=0.69

Topic: Physics, Thermal Properties of Matter, NEET
The intensity of the light coming from one of the slits in YDSE is double the intensity from the other slit. Find the ratio of maximum intensity to minimum intensity in the interference fringe pattern observed.

Options:
A 32
B 36
C 38
D 34

The correct answer is:
34

Solution:
I max I min = I 1 + I 2 2 I 1 - I 2 2
Now I1=2I2â¹ImaxImin= 2I2+I22I2-I2 2
2+12-1 2
=34

Topic: Physics, Wave Optics, NEET
The interaction between cuckoo and crow is an example of

Options:
A competition.
B proto-cooperation.
C brood parasitism.
D mutualism.

The correct answer is:
brood parasitism.

Solution:
Brood parasitism in birds is a fascinating example of parasitism in which the parasitic bird lays its eggs in the nest of its host and lets the host incubate them. During the course of evolution, the eggs of the parasitic bird have evolved to resemble the host’s egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest. E.g. cuckoo laying its eggs in nest of crow.

Topic: Biology, Organisms and Populations, NEET
The interaction between two species wherein one species is positively affected and the other is negatively affected is called ___.

Options:
A Commensalism
B Predation
C Mutualism
D Parasitism

The correct answer is:
Parasitism

Solution:
The interaction between two species wherein one species is positively affected and the other is negatively affected is called parasitism

Topic: Biology, Organisms and Populations, NEET