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NEET 2021

Exam Held on Sun Sep 12 2021 14:00:00 GMT+0000 (Coordinated Universal Time)
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Biology

Mutations in plant cells can be induced by :
Which of the following is an incorrect statement?
The term used for transfer of pollen grains from anthers of one plant to stigma ...
The factor that leads to Founder effect in a population is :
Genera like Selaginella and Salvinia produce to kinds of spores. Such plants are...
The production of gametes by the parents, formation of zygotes, the F<sub>1</sub...
Diadelphous stamens are found in
Match List-I with List-II :<br><br><style type="text/css"> .tg {border-collapse...
Gemmae are present in
A typical angiosperm embryo sac at maturity is :
Inspite of interspecific competition in nature, which mechanism the competing sp...
During the purification process for recombinant DNA technology, addition of chil...
DNA strands on a gel stained with ethidium bromide when viewed under UV radiatio...
Which of the following algae produce Carrageen?
Plants follow different pathways in response to environment of phases of life to...
Which of the following plants is monoecious?
The site of perception of light in plants during photoperiodism is
The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium presen...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Which of the following stages of meiosis involves division of centromere?
The first stable product of CO<sub>2</sub> fixation in Sorghum is
Which of the following statements is not correct?
Which of the following algae contains mannitol as reverse food material?
When gene targetting involving gene amplification is attempted in an individual'...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Match List-I with List-II .<br><br><style type="text/css"> .tg {border-collapse...
Complete the flow chart on central dogma.<br><br><img src="https://imagex.cdn.e...
In the equation GPP - R = NPP<br><br>R represents :
When the centromere is situated in the middle of two equal arms of chromosomes, ...
The plant hormone used to destroy weeds in a field
Which of the following are not secondary metabolites in plants?
Amensalism can be represented as :
Which of the following is not an application of PCR (Polymerase Chain Reaction)?...
Which of the following is a correct sequence of steps in a PCR (Polymerase Chain...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Which of the following statements is correct?
In the exponential growth equation <br/>N<sub>t</sub> = N<sub>0</sub>e<sup>rt</s...
In some members of which of the following pairs of families, pollen grains retai...
Match Column - I with Column - II.<br><br><style type="text/css"> .tg {border-c...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Match Column-I with Column-II<br><br> <picture><source media="(max-width: 320px)...
What is the role of RNA polymerase III in the process of transcription in eukary...
Which of the following statements is incorrect?
Now-a-days it is possible to detect the mutated gene causing cancer by allowing ...
DNA fingerprinting involves identifying differences in some specific regions in ...
Which of the following statements is incorrect?
Plasmid pBR322 has Pst I restriction enzyme site within gene amp<sup>R</sup> tha...
Identify the correct statement.
Select the correct pair.
Match List-I with List-II<br><br><style type="text/css"> .tg {border-collapse:c...
Succus entericus is referred to as :
Receptors for sperm binding in mammals are present on :
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis ...
Select the favourable conditions required for the formation of oxyhaemoglobin at...
Match the following :<br><br><style type="text/css"> .tg {border-collapse:colla...
Which stage of meiotic prophase shows terminalisation of chiasmata as its distin...
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine...
The partial pressures (in mm Hg) of oxygen (O<sub>2</sub>) and carbon dioxide (C...
Read the following statements<br><br>(1) Metagenesis is observed in Helminths.<b...
In a cross between a male and female, both heterozygous for sickle cell anaemia ...
Which of the following statements wrongly represents the nature of smooth muscle...
Which one of the following belongs to the family Muscidae?
During the process of gene amplification using PCR, if very high temperature is ...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Which one of the following is an example of Hormone releasing IUD?
The centriole undergoes duplication during :
Which of the following characteristics is incorrect with respect to cockroach?
Dobson units are used to measure thickness of :
Veneral diseases can spread through :<br><br>(1) Using sterile needles<br><br>(2...
Which one of the following organisms bears hollow and pneumatic long bones?
Persons with 'AB' blood group are called as "Universal recipients". This is due ...
The organelles that are included in the endomembrane system are
A specific recognition sequence identified by endonucleases to make cuts at spec...
Identify the incorrect pair
With regard to insulin choose correct options.<br><br>(1) C-peptide is not prese...
Chronic auto immune disorder affecting neuro muscular junction leading to fatigu...
Which of the following RNAs is not required for the synthesis of protein?
Which of the following is not an objective of Biofortification of crops?
Erythropoietin hormone which stimulates R.B.C formation is produced by :
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrin...
For effective treatment of the disease, early diagnosis and understanding its pa...
Sphincter of oddi is present at :
Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongat...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
Match List-I with List-II<br><br><style type="text/css"> .tg {border-collapse:c...
Following are the statements with reference to 'lipids'.<br><br>(1) Lipids havin...
Match List-I with List-II<br><br><style type="text/css"> .tg {border-collapse:c...
During muscular contraction which of the following events occur?<br><br>(1) 'H' ...
Match List-I with List-II.<br><br><style type="text/css"> .tg {border-collapse:...
<b>Assertion</b> <b>(A) :</b> A person goes to high altitude and experiences 'al...
Which of these is not an important component of initiation of parturition in hum...
Which of the following secretes the hormone, relaxin, during the later phase of ...
Match List-I with List-II<br><br><style type="text/css"> .tg {border-collapse:c...
Which of the following is not a step in Multiple Ovulation Embryo Transfer Techn...
The Adenosine deaminase deficiency results into
Which one of the following statements about histones is wrong?
Statement I : The codon 'AUG' codes for methionine and phenylalanine.<br><br>Sta...
Identify the types of cell junctions that help to stop the leakage of the substa...
Following are the statements about prostomium of earthworm.<br><br>(1) It serves...

Chemistry

The incorrect statement among the following is :
Given below are two statements :<br><br>Statement I :<br><br>Aspirin and Paracet...
Statement I : Acid strength increases in the order given as HF &lt;&lt; HCl &lt;...
Which one among the following is the correct option for right relationship betwe...
The correct option for the number of body centred unit cells in all 14 types of ...
Among the following alkaline earth metal halides, one which is covalent and solu...
Tritium, a radioactive isotope of hydrogen, emits which of the the following par...
The maximum temperature that can be achieved in blast furnace is :
BF<sub>3</sub> is planar and electron deficient compound. Hybridization and numb...
The major product of the following chemical reaction is :<br><br> <img src="http...
The molar conductance of NaCl, HCl and CH<sub>3</sub>COONa at infinite dilution ...
A particular station of All India Radio, New Delhi broadcasts on a frequency of ...
Which of the following reactions is the metal displacement reaction? Choose the ...
The right option for the statement "Tyndall effect is exhibited by", is :
The compound which shows metamerism is :
Match List - I with List - II :<br><br><table> <thead> <tr> <th></th> ...
Which one of the following polymers is prepared by addition polymerisation?
The RBC deficiency of deficiency disease of :
Identify the compound that will react with Hinsberg's reagent to give a solid wh...
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of :
Ethylene diaminetetraacetate (EDTA) ion is :
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is P...
An organic compound contains 78% (by wt.) carbon and remaining percentage of hyd...
The pK<sub>b</sub> of dimethyl amine and pK<sub>a</sub> of acetic acid are 3.27 ...
The structures of beryllium chloride in solid state and vapour phase, are :
Which one of the following methods can be used to obtain highly pure metal which...
Right option for the number of tetrahedral and octahedral voids in hexagonal pri...
The correct structure of 2, 6-dimethyl-dec-4-ene is
Choose the correct option for graphical representation of Boyle's law, which sho...
The following solutions were prepared by dissolving 10 g of glucose (C<sub>6</su...
The correct sequence of bond enthalpy of 'C-X' bond is :
Dihedral angle of least stable conformer of ethane is :
Noble gases are named because of their inertness towards reactivity. Identify an...
What is the IUPAC name of the organic compound formed in the following chemical ...
For a reaction, A $$\to$$ B, enthalpy of reaction is $$-$$4.2 kJ mol<sup>$$-$$1<...
Match List-I with List-II :<br><br><table> <thead> <tr> <th></th> <th>...
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1kwr5ggsz/9c1eb8...
The correct option for the value of vapour pressure of a solution at 45$$^\circ$...
Match List-I with List-II<br><br> <img src="https://app-content.cdn.examgoal.net...
The intermediate compound 'X' in the following chemical reaction is :<br><br/> <...
The product formed in the following chemical reaction is :<br><br> <img src="htt...
The slope of Arrhenius plot $$\left( {\ln \,k\,v/s{1 \over T}} \right)$$ of firs...
The reagent 'R' in the given sequence of chemical reaction is :<br><br><img src=...
For irreversible expansion of an ideal gas under isothermal condition, the corre...
From the following pairs of ions which one is not an iso-electronic pair?
The molar conductivity of 0.007 M acetic acid is 20 S cm<sup>2</sup> mol<sup>$$-...
Which of the following molecules is non-polar in nature?
Match List-I with List-II :<br><br><table> <thead> <tr> <th></th> <th>...
Choose the correct option for the total pressure (in atm.) in a mixture of 4g O<...
In which one of the following arrangements the given sequence is not strictly ac...

Physics

The E and G respectively denote energy and gravitational constant, then $${E \ov...
An inductor of inductance L, a capacitor of capacitance C and a resistor of resi...
A body is executing simple harmonic motion with frequency 'n', the frequency of ...
A thick current carrying cable of radius 'R' carries current 'I' uniformly distr...
A nucleus with mass number 240 breaks into two fragments each of mass number 120...
A parallel plate capacitor has a uniform electric field $$\overrightarrow E $$ i...
The number of photons per second on an average emitted by the source of monochro...
Polar molecules are the molecules :
The half life of a radioactive nuclide is 100 hours. The fraction of original ac...
A capacitor of capacitance 'C', is connected across an ac source of voltage V, g...
A screw gauge gives the following readings when used to measure the diameter of ...
Find the value of the angle of emergence from the prism. Refractive index of the...
In a potentiometer circuit a cell of EMF 1.5 V gives balance point at 36 cm leng...
A particle is released from height S from the surface of the Earth. At a certain...
The effective resistance of a parallel connection that consists of four wires of...
Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine. Th...
An infinitely long straight conductor carries a current of 5A as shown. An elect...
Consider the following statements (A) and (B) and identify the correct answer.<b...
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillatio...
The electron concentration in an n-type semiconductor is the same as hole concen...
A dipole is placed in an electric field as shown. In which direction will it mov...
A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5...
The escape velocity from the Earth's surface is v. The escape velocity from the ...
An electromagnetic wave of wavelength '$$\lambda$$' is incident on a photosensit...
A lens of large focal length and large aperture is best suited as an objective o...
Two charged spherical conductors of radius R<sub>1</sub> and R<sub>2</sub> are c...
For a plane electromagnetic wave propagating in x-direction, which one of the fo...
A cup of coffee cools from 90$$^\circ$$C to 80$$^\circ$$C in t minutes, when the...
The equivalent capacitance of the combination shown in the figure is :<br><br><p...
If force [F], acceleration [A] and time [T] are chosen as the fundamental physic...
A small block slides down on a smooth inclined plane, starting from rest at time...
The velocity of a small ball of mass M and density d, when dropped in a containe...
Column - I gives certain physical terms associated with flow of current through ...
A radioactive nucleus <br>$$_Z^AX$$ $$\to$$ $${}_{Z - 1}B$$ $$\to$$ $${}_{Z - 3}...
Match Column - I and Column - II and choose the correct match from the given cho...
In the product<br><br>$$\overrightarrow F = q\left( {\overrightarrow v \times ...
From a circular ring of mass 'M' and radius 'R' an arc corresponding to a 90$$^\...
Three resistors having resistances r<sub>1</sub>, r<sub>2</sub> and r<sub>3</sub...
A ball of mass 0.15 kg is dropped from a height 10m, strikes the ground and rebo...
A step down transformer connected to an ac mains supply of 220 V is made to oper...
A uniform conducting wire of length 12a and resistance 'R' is wound up as a curr...
A particle of mass 'm' is projected with a velocity $$\upsilon $$ = kV<sub>e</su...
A series LCR circuit containing 5.0 H inductor, 80$$\mu$$F capacitor and 40$$\Om...
A particle moving in a circle of radius R with a uniform speed takes a time T to...
Two conducting circular loops of radii R<sub>1</sub> and R<sub>2</sub> are place...
Twenty seven drops of same size are charged at 220V each. They combine to form a...
A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 4...
A point object is placed at a distance of 60 cm from a convex lens of focal leng...
A car starts from rest and accelerates at 5m/s<sup>2</sup>. At t = 4 s, a ball i...
For the given circuit, the input digital signals are applied at the terminals A,...

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