datavorous/entrance-exam-dataset huggingface dataset:
Which is the correct balanced reaction of acidified permanganate solution with SO2?

Options:
A MnO4-+ 4SO2+ 2H2O→5SO42-+ 7Mn2++ H+
B 3MnO4-+ 5SO2+ 4H2O→SO42-+ 7Mn2++ 3H+
C 2MnO4-+ 5SO2+ 2H2O→4SO42-+ 3Mn2++ 3H+
D 2MnO4-+ 5SO2+ 2H2O→5SO42-+ 2Mn2++ 4H+

The correct answer is:
2MnO4-+ 5SO2+ 2H2O→5SO42-+ 2Mn2++ 4H+

Solution:
Correct Option is : (D)
2MnO4-+ 5SO2+ 2H2O→5SO42-+ 2Mn2++ 4H+

Topic: Chemistry, d and f Block Elements, NEET
Which is the correct characterstic of catalyst?

Options:
A Alters the equilibrium in a reaction
B Is always in the same phase as the reactants
C Participates in the reaction and provides easier pathway for the same
D Does not participate in the reaction

The correct answer is:
Participates in the reaction and provides easier pathway for the same

Solution:
A contradict reaction but can speed it up. It can be recovered after the reaction.

Topic: Chemistry, Surface Chemistry, NEET
Which is the correct definition of Bond length?

Options:
A Bond length is the distance between two atoms in a molecule when the bond is at its maximum energy state.
B Bond length is the distance between the nuclei of two bonded atoms in a molecule, representing the equilibrium position of the atoms.
C Bond length is the total length of a chemical bond, including both the covalent and ionic components.
D Bond length is the measure of the bond's strength in a molecule.

The correct answer is:
Bond length is the distance between the nuclei of two bonded atoms in a molecule, representing the equilibrium position of the atoms.

Solution:
Correct Option is : (B)
Bond length is the distance between the nuclei of two bonded atoms in a molecule, representing the equilibrium position of the atoms.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which is the correct definition of thermoplastic polymer with an example?

Options:
A Thermoplastic polymers are highly heat-resistant materials that do not melt under normal conditions like styrene.
B Thermoplastic polymers are materials that permanently deform when subjected to high temperatures like Nylon 6.
C Thermoplastic polymers are capable of repeatedly softening on heating and hardening on cooling like polyethene.
D Thermoplastic polymers are polymers that become brittle at low temperatures like glyptal.

The correct answer is:
Thermoplastic polymers are capable of repeatedly softening on heating and hardening on cooling like polyethene.

Solution:
Correct Option is : (C)
Thermoplastic polymers are capable of repeatedly softening on heating and hardening on cooling like polyethene.

Topic: Chemistry, Polymers, NEET
Which is the correct equation for Freundlich adsorption isotherm

Options:
A xm=kp1/n
B x=mkp1/n
C x/m=kp-n
D All of these

The correct answer is:
All of these

Solution:
xm=kp1/n or x=m.kp1/n or x/m=kp-n
All of these equation represent freundlich adsorption isotherm.

Topic: Chemistry, Surface Chemistry, NEET
Which is the correct formula for alum?

Options:
A K2SO4.Al2(SO4)3.24H2O
B K4[Fe(CN)6]
C K2SO4.Al2(SO4)3.6H2O
D Na2CO3.10H2O

The correct answer is:
K2SO4.Al2(SO4)3.24H2O

Solution:
General formula for alum is
M2SO4.R2(SO4)3.24H2O
M= monovalent cation (K+,Na+....)
R= Trivalent cation (Al+3,Fe+3)
Hence, K 2 SO 4 .  Al 2 ( SO 4 ) 2 .24 H 2 O represent an alum.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which is the CORRECT match?

Options:
A CryIAb - Cotton bollworms
B CryIAc - Cotton bollworms
C CryIAc - Corn borer
D CryIIAb - Corn borer

The correct answer is:
CryIAc - Cotton bollworms

Solution:
Bacillus thuringiensis is a bacterium seen on plants. This is known to produce a toxin. This toxin is in inactive form when bacteria are on the plants. If any insect harms the plant this toxin enters the insect's gut and thus gets activated due to alkaline pH of its gut. This bacterium contain genes called as Cry gene and these get activated and start attacking the cells of insects thus results in their death. Thus these bacteria act as biopesticides because of this feature. This gene from the bacterium is used to provide resistant to plants. These genes prevent various infections. Cry 1 Ac and Cry II Ab are for cotton bollworms Cry I Ab for corn borer

Topic: Biology, Biotechnology and Its Applications, NEET
Which is the correct order for increasing the energy of subshells?

Options:
A 5p<4f<6s<5d
B 5p<6s<4f<5d
C 4f<5p<5d<6s
D 5p<5d<4f<6s

The correct answer is:
5p<6s<4f<5d

Solution:
According to Aufbau principle electron are filled in various atomic orbital in the increasing order of energy 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s .

Topic: Chemistry, Structure of Atom, NEET
Which is the correct order for the wavelength of absorption in the visible region?

Options:
A [Ni(NO2)6]4-<[Ni(NH3)6]2+<[Ni(H2O)6]2+
B [Ni(NO2)6]4-<[Ni(H2O)6]2+<[Ni(NH3)6]2+
C [Ni(H2O)6]2+<[Ni(NH3)6]2+<[Ni(NO2)6]4-
D [Ni(NH3)6]2+<[Ni(H2O)6]2+<[Ni(NO2)6]4-

The correct answer is:
[Ni(NO2)6]4-<[Ni(NH3)6]2+<[Ni(H2O)6]2+

Solution:
The absorption of energy or the observation of colour in a complex transition compound depends on the charge of the metal ion and the nature of the ligands attached. The same metal ion with different ligands shows different absorption depending upon the type of ligand. The presence of weak field ligands make the central metal ion to absorb low energies i.e., of higher wavelength. The field strength of ligands can be obtained from spectrochemical series. i.e.
(weak field) I­–<Br–<S2–<Cl–<NO3–<F–<OH–<H2O<NH3<NO2–<CN–<CO (strong field).

Topic: Chemistry, Coordination Compounds, NEET
Which is the correct order of boiling points of isomeric alkyl amines?

Options:
A 3°>2°>1°
B 2°>1°>3°
C 1°>2°>3°
D 3°>1°>2°

The correct answer is:
1°>2°>3°

Solution:
Correct Option is : 3
1°>2°>3°

Topic: Chemistry, Amines, NEET
Which is the correct order of bond energy of single, double and triple bonds between carbon atoms?

Options:
A C-C>C=C>C≡C
B C=C>C≡C>C-C
C C≡C>C-C>C=C
D C≡C>C=C>C-C

The correct answer is:
C≡C>C=C>C-C

Solution:
As B.E. of triple bond > double bond > single bond so the correct order is
C≡C>C=C>C-C

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?

(At. No. Z = 22)

Options:
A 3s 4s 3p 3d
B 4s 3s 3p 3d
C 3s 3p 3d 4s
D 3s 3p 4s 3d

The correct answer is:
3s 3p 4s 3d

Solution:
Ti22=1s22s22p63s23p64s23d2
energy leveln+l value= 3s3+0=3, 3p3+1=4, 4s4+0=4, 3d3+2=5

Topic: Chemistry, Structure of Atom, NEET, NEET 2015 (Phase 2)
Which is the correct order of ionic sizes?
Atomic no.:Ce=58, Sn=50, Yb=70 and Lu=71

Options:
A Ce 3+ > Sn 2+ > Yb 3+ > Lu 3+
B Sn 2+ > Yb 3+ >C e 3+ > Lu 3+
C Sn 2+ >C e 3+ > Yb 3+ > Lu 3+
D Lu 3+ > Yb 3+ > Sn 2+ >C e 3+

The correct answer is:
Sn 2+ >C e 3+ > Yb 3+ > Lu 3+

Solution:
As positive charge increases ionic size decreases.
Among lanthanoids, as atomic number increases ionic size decreases.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which is the correct reaction to explain amphoteric nature of water.

Options:
A H2O + HCl → H3O++ Cl-
B H2O + NH3→ NH4++ OH-
C H2O + H2SO4→ H3O++ HSO4-
D H2O + NaOH → Na++ OH-

The correct answer is:
H2O + NH3→ NH4++ OH-

Solution:
Correct Option is : (B)
H2O + NH3→ NH4++ OH-

Topic: Chemistry, Hydrogen, NEET
Which is the correct relationship between Vrms,Vmp,Vavg?

Options:
A Vrms>Vavg>Vmp
B Vmp>Vavg>Vrms
C Vavg>Vmp>Vrms
D Vrms>Vmp>Vavg

The correct answer is:
Vrms>Vavg>Vmp

Solution:
Correct Option is : 1
Vrms>Vavg>Vmp

Topic: Chemistry, Chemical Kinetics, NEET
Which is the correct representation to express the molar concentration (M) of any solution?

Options:
A No. of gram equivalent of solute Volume of solution in litre
B No. of moles of solute Volume of solution in litre
C No. of moles of solute Mass of solvent in kg
D No. of moles of any constituent Total no. of moles of all constituents

The correct answer is:
No. of moles of solute Volume of solution in litre

Solution:
Molarity of a solution is number of moles solute dissolves in a litre of solution.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
Which is the correct statement in the following?

Options:
A The coordination number of Na+ ion in NaCl is 4
B The unit cell having crystal parameters, a=b≠c, α=β=90o,γ=120o is hexagonal
C The ionic crystal of AgBr has only Schottky defect
D In ionic compounds having Frenkel defect the ratio γ+γ- is high

The correct answer is:
The unit cell having crystal parameters, a=b≠c, α=β=90o,γ=120o is hexagonal

Solution:
A crystal system is hexagonal if its unit cell having a=b≠c axial ratio and
α=β=90°, γ=120° axial angles. Crystal of AgBr has both Schottky defect and Frenkel defect. Frenkel defect is shown by ionic solid having low coordination number.

Topic: Chemistry, Solid State, NEET
Which is the correct statement regarding electron-deficient,electron-precise or electron-rich compounds of hydrogen, along with suitable examples?

Options:
A Electron-deficient compounds have an excess of electrons, like ammonia (NH3).
B Electron-precise compounds have exactly the right number of electrons for stability, like methane (CH4).
C Electron-rich compounds lack sufficient electrons for stability, like borane (BH3).
D Electron-rich compounds have unpaired electrons, like hydrogen peroxide (H2O2).

The correct answer is:
Electron-precise compounds have exactly the right number of electrons for stability, like methane (CH4).

Solution:
Correct Option is : (B)
Electron-precise compounds have exactly the right number of electrons for stability, like methane (CH4).

Topic: Chemistry, Hydrogen, NEET
Which is the correct thermal stability order for H2EE=O, S, Se, Te and Po?

Options:
A H2S<H2O<H2Se<H2Te<H2Po
B H2O<H2S<H2Se<H2Te<H2Po
C H2Po<H2Te<H2Se<H2S<H2O
D H2Se<H2Te<H2Po<H2O<H2S

The correct answer is:
H2Po<H2Te<H2Se<H2S<H2O

Solution:
Thermal stability of H2E decreases with the decrease in bond dissociation enthalpy of H-E bond down the group.

H2O>H2S>H2Se>H2Te>H2Po

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET, NEET 2019 (All India)
Which is the first fraction obtained, when rectified spirit and benzene are distilled together?

Options:
A A ternary azeotrope
B Absolute alcohol
C A binary azeotrope
D Denatured spirit

The correct answer is:
A ternary azeotrope

Solution:
Azeotropic distillation method –Rectified spirit + Benzene + water
This on Fractional distillation
First fraction at 331.8 K is ternary azeotrope- ( H2O 7.4% + Benzene 74% + alcohol 18.5%)
Second fraction 341.2 K is a binary azeotrope- (Benzene 67.7% + Alcohol 32.2%)
Last fraction at 351K is absolute alcohol.

Topic: Chemistry, Solutions, NEET
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

Options:
A Peroxisomes
B Golgi bodies
C Polysomes
D Endoplasmic reticulum

The correct answer is:
Golgi bodies

Solution:
FUNCTIONS OF GOLGI COMPLEX: Packaging and transporting of materials is the primary function of the Golgi complex. It is responsible for the modification of proteins and various other biomolecules, to form conjugated biomolecules like glycoproteins, glycolipids, lipoproteins, etc. The materials are then delivered to the intracellular targets or secreted outside the cell. The materials come from the ER; in the form of vesicles; and fuse with the cis face. Then they move towards the trans face.

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2020 (Phase 1)
Which is the incorrect statement about the product?
Product

Options:
A Product is aromatic
B Product has high dipole moment
C Product has less resonance energy
D Product is soluble in water

The correct answer is:
Product has less resonance energy

Solution:
Product is aromatic, polar and soluble in water with high resonance energy.

Topic: Chemistry, Hydrocarbons, NEET
Which is the incorrect statement?

Options:
A Fe0.98O has non-stoichiometric metal deficiency defect.
B Density decreases in case of crystals with Schottky's defect.
C NaCls is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal.
D Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal.

The correct answer is:
Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal.

Solution:
In Schottky defect atoms/points are totally missing from the lattice, the net density of crystal will get decreased.
In Fe0.98O the number of the cation is more than the number of missing anion, hence, it is non-stoichiometric metal deficiency defect.

Frenkel defect occurs only when cations are smaller when compared to the anions.

Note: Option A is changed from the exam to make it academically correct.

Topic: Chemistry, Solid State, NEET, NEET 2017
Which is the largest known human gene?

Options:
A Dystrophin
B Chromosome 1
C Chromosome Y
D Repetitive sequence

The correct answer is:
Dystrophin

Solution:
The largest known human gene is dystrophin at 2.4 million bases.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which is the last element in the series of the actinoids and what is the electronic configuration and possible oxidation state of this element?

Options:
A Lawrencium(Lr), [Rn]5f146d17s2and +3
B Nobelium(No), [Rn]5f147s2and +2
C Lawrencium(Lr), [Rn]5f126d17s2and +4
D Nobelium(No), [Rn]5f147s2and +3

The correct answer is:
Lawrencium(Lr), [Rn]5f146d17s2and +3

Solution:
Correct Option is : (A)
Lawrencium(Lr), [Rn]5f146d17s2and +3

Topic: Chemistry, d and f Block Elements, NEET
Which is the major product formed when acetone is heated with iodine and potassium hydroxide?

Options:
A Acetophenone
B Iodoform
C Iodoacetone
D Acetic acid

The correct answer is:
Iodoform

Solution:

Topic: Chemistry, Aldehydes and Ketones, NEET
Which is the monomer of neoprene in the following?

Options:
A

B

C

D

The correct answer is:

Solution:
Neoprene is synthetic rubber and is a polymer of chloroprene which is chemically 2-chlorobuta- 1,3-diene.

Topic: Chemistry, Polymers, NEET, NEET 2013 (All India)
Which is the monomer of Neoprene in the following?

Options:
A CH2=C(CH3)-CH=CH2
B CH2=C(Cl)-CH=CH2
C CH2=CH-C≡CH
D CH2=CH-CH=CH2

The correct answer is:
CH2=C(Cl)-CH=CH2

Solution:
Neoprene is a polymer of 2-chloro buta-1, 3-di-ene
CH2=C(CH3)-CH=CH2 (Isoprene) is monomer of natural rubber.
CH2=CH-CH=CH2 is monomer of Buna-N, Buna-S.

Topic: Chemistry, Polymers, NEET
Which is the most common mechanism of genetic variation in the population of sexually-reproducing organism?

Options:
A Transduction
B Chromosomal aberrations
C Genetic Drift
D Recombination

The correct answer is:
Recombination

Solution:
The most common mechanism of genetic variation is recombination. In sexually reproducing organism during gametogenesis, the homologus chromosomes exchanges genetic material by process of crossing over. This produces new combination. It is responsible for variation.

Topic: Biology, Evolution, NEET, NEET 2015 (Phase 1)
Which is the most common type of embryo sac in angiosperms?

Options:
A Tetrasporic with one mitotic stage of divisions
B Monosporic with three sequential mitotic divisions
C Monosporic with two sequential mitotic divisions
D Bisporic with two sequential mitotic divisions

The correct answer is:
Monosporic with three sequential mitotic divisions

Solution:
The most common type of female gametophyte (embryo sac) in angiosperms is the monosporic embryo sac in which the embryo sac develops from a single functional megaspore $(n)$ while the other three megasproes degenerate. The functional megaspore undergoes three sequential mitotic divisions and gives rise to 8-nucleate and 7-celled mature embryo sac.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2019 (Odisha)
Which is the most effective way to conserve the plant diversity of an area?

Options:
A By tissue culture method
B By creating biosphere reserve
C By creating botanical garden
D By developing seed bank

The correct answer is:
By creating biosphere reserve

Solution:
Biosphere reserve is an in situ conservation method. Hence, it is the most effective way among the four for preserving genetic diversity by protecting wild population, traditional life style and domesticated plant genetic resource.

Topic: Biology, Biodiversity and its Conservation, NEET
Which is the most reactive alkyl halide for the following reaction?
RX+ H 2 O→R−OH+HX−

Options:
A
B
C
D

The correct answer is:

Solution:
Here the most reactive halide is as in it most stable tertiary allyl carbocation is possible.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which is the most species:rich taxonomic group among animals?

Options:
A Fungi
B Fish
C Insects
D Mammals

The correct answer is:
Insects

Solution:
Insects are the most species:rich taxonomic group among animals, making up more than 70% of the total.

Topic: Biology, Biodiversity and its Conservation, NEET
Which is the most stable conformation of 3,4-dimethylhexane?

Options:
A
B
C
D

The correct answer is:

Solution:
the most stable conformation of 3,4-dimethylhexane is
All others have the four bulky groups at adjacent positions so they are less stable then antiform.

Topic: Chemistry, General Organic Chemistry, NEET
Which is the most suitable reagent among the following to distinguish compound (3) from the rest of the compounds?
(1) CH3-C≡C-CH3
(2) CH3-CH2-CH2-CH3
(3) CH3-CH2C≡CH
(4) CH3-CH=CH2

Options:
A Bromine in carbon tetrachloride
B Bromine in acetic acid
C Alk.KMnO4
D Ammoniacal silver nitrate

The correct answer is:
Ammoniacal silver nitrate

Solution:
The compound 3 possessing the terminal alkyne only reacts with ammoniacal AgNO3 giving white ppt and thus can be distinguished from 1, 2 and 4 compounds.

Topic: Chemistry, Hydrocarbons, NEET
Which is the most suitable reagent for the following transformation?

Options:
A alkaline KMnO4
B I2/NaOH
C Tollen's reagent
D CrO3/CS2

The correct answer is:
I2/NaOH

Solution:
As it is iodoform test followed by reaction with dil. H+ .
Converts
(3) Used for carbonyls
(4) Converts alcohol to aldehydes

Topic: Chemistry, Aldehydes and Ketones, NEET
Which is the National Aquatic Animal of India?

Options:
A Gangetic shark
B River dolphin
C Blue whale
D Sea-horse

The correct answer is:
River dolphin

Solution:
The docile and graceful river dolphin is now India's National Aquatic Animal. The Ganges river dolphin can only live in freshwater and is essentially blind. They hunt by emitting ultrasonic sounds, which bounces off of fish and other prey, enabling them to “see” an image in their mind. They are frequently found alone or in small groups, and generally a mother and calf travel together

Topic: Biology, Animal Kingdom, NEET, NEET 2016 (Phase 1)
Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?

Options:
A DNA dependent DNA polymerase
B DNA dependent RNA polymerase
C DNA Ligase
D DNase

The correct answer is:
DNA dependent RNA polymerase

Solution:
Transcription is the process of the formation of RNA from a template strand of DNA. In prokaryotes, a single RNA polymerase or DNA dependent RNA polymerase carries out the formation of all types of RNAs of the cell.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2021
Which is the particular type of drug that is obtained from the plants whose one flowering branch is shown below?

Options:
A Hallucinogen
B Depressant
C Stimulant
D Pain - Killer

The correct answer is:
Hallucinogen

Solution:
The plant or the flower that is shown above is Datura. It is a genus of nine species of poisonous, vespertine-flowering plants belonging to the nightshade family Solanaceae. It is a source of a psychoactive compound or drug which causes hallucinations.

Topic: Biology, Human Health and Diseases, NEET, NEET 2014
Which is the strongest acid in the following?

Options:
A $\mathrm{H}_2 \mathrm{SO}_4$
B $\mathrm{HClO}_3$
C $\mathrm{HClO}_4$
D $\mathrm{H}_2 \mathrm{SO}_3$

The correct answer is:
$\mathrm{HClO}_4$

Solution:
The strength of axyacids can also be decided with the help of the oxidation number central atom. Higher the oxidation number of central atom, more acidic is the oxyacid.
Since, in $\mathrm{HClO}_4$, oxidation number of $\mathrm{Cl}$ is highest, so $\mathrm{HClO}_4$ is the strongest acid among the given.

Topic: Chemistry, Redox Reactions, NEET, NEET 2013 (All India)
Which is the strongest acid in the following?

Options:
A HClO3
B HClO4
C H2SO3
D H2SO4

The correct answer is:
HClO4

Solution:
Acidic nature ∝ electro negativity and oxidation number of central atom.
Here HClO4 is the strongest acid and decreasing order of acidic strength is as follows
HClO4>HClO3>H2SO4>H2SO3

Topic: Chemistry, General Organic Chemistry, NEET
Which is the strongest base?

Options:
A
B
C
D

The correct answer is:

Solution:
is most basic here as in it -NH2 group is not in conjugation with the benzene ring.

Topic: Chemistry, General Organic Chemistry, NEET
Which is the weakest among the following type of bond ?

Options:
A Ionic bond
B Covalent bond
C Metallic bond
D Hydrogen bond

The correct answer is:
Hydrogen bond

Solution:
Weak bond⇒Hydrogen bond

Molecules that have nonpolar covalent bonds donot form hydrogen bonds. Strenght. Hydrogen bonds are classified as weak bonds

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which is the wrong pair?

(i) Starch solution : sol (ii) Aq. NaCl : true solution (iii) milk : emulsion (iv) Aq. BaSO4 : true solution

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

The correct answer is:
(iv)

Solution:
BaSO4is insoluble in water and thus, it does not from true solution with water.

Topic: Chemistry, Surface Chemistry, NEET
Which is true about use of H2O2 as solvent.

Options:
A Poor polar solvent than water
B Better polar solvent than H2O
C Both have equal polarity
D Better polar solvent but its strong auto oxidising ability limits its use as such

The correct answer is:
Better polar solvent but its strong auto oxidising ability limits its use as such

Solution:
Although H2O2 is a better polar solvent than H2O . However it cannot be used as such because of the strong auto-oxidation ability.

Topic: Chemistry, s Block Elements, NEET
Which is true for Internal energy of system is?

Options:
A State function
B Path function
C Both (A)and(B)
D None of these

The correct answer is:
State function

Solution:
The functions whose value depends only on the state of a system are known as state functions.

Topic: Chemistry, Thermodynamics (C), NEET
Which is true for the temperature coefficient of a reaction?

Options:
A Specific reaction rate at 25oC
B Rate of the reaction at 100oC
C Ratio of the rate constants at temperatures 35oC and 25oC
D Ratio of the rate constants at two temperatures differing by 1oC

The correct answer is:
Ratio of the rate constants at temperatures 35oC and 25oC

Solution:
Temperature coefficient K35oCK25oC=K308kK298k=2 and 3 for most reactions.

Topic: Chemistry, Chemical Kinetics, NEET
Which is unique to mitosis and does not occur in meiosis?

Options:
A Homologous chromosomes cross over
B Homologous chromosomes pair and form bivalents
C Homologous chromosomes behave independently
D Formation of biphasic plate at metaphase

The correct answer is:
Homologous chromosomes behave independently

Solution:
In mitosis, the daughter cells formed are identical whereas in meiosis the daughter cells are very different as crossing over takes place. The events that occur in meiosis include homologous chromosomes pairing up, crossing over and lining of the pairs at the equator.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which is used in the formation of nylon-6,6?

Options:
A Sulphurhexa fluoride
B Adipic acid
C Sulphurous acid
D Phthalic acid

The correct answer is:
Adipic acid

Solution:
Nylon-6,6 is made from adipic acid.
Nylon 6,6 is synthesized by polycondensation of hexamethylenediamine and adipic acid. Equivalent amounts of hexamethylenediamine and adipic acid are combined with water in a reactor.

Topic: Chemistry, Polymers, NEET