datavorous/entrance-exam-dataset huggingface dataset:
Which is correct for a first order reaction

Options:
A The degree of dissociation is equal to (1-e-kt)
B A plot of reciprocal concentration of the reactant vs time gives a straight line
C The time taken for the completion of 75% reaction is thrice the t1/2 of the reaction
D The pre-exponential factor in the Arrhenius equation has the dimension of time T-2

The correct answer is:
The degree of dissociation is equal to (1-e-kt)

Solution:
(A) is correct because degree of dissociation =1-e-kt at any time t.
(B) is wrong because plot of log [A] vs t is a straight line
(C) is wrong because time taken for 75% reaction is two half life.
(D) is wrong because in k=Ae-Ea/RT , Ea/RT is dimensionless hence A has the unit of K.

Topic: Chemistry, Chemical Kinetics, NEET
Which is correct for spontaneity of an electrochemical cell?

Options:
A ΔG=-ve,E=0
B ΔG=+ve,E=+ve
C ΔG=0,E=0
D ΔG=-ve,E=+ve

The correct answer is:
ΔG=-ve,E=+ve

Solution:
ΔG=−nFE
Where E = emf of the cell

Topic: Chemistry, Thermodynamics (C), NEET
Which is correct for the combustion reaction occurring in an automobile is 2C8H18(s) + 25O2(g) â16CO2(g) + 18H2O(g).

Options:
A ∆H=-ve; ∆S+ve; ∆G=+ve
B ∆H=+ve; ∆S-ve; ∆G=+ve
C ∆H=-ve; ∆S+ve; ∆G=-ve
D ∆H=+ve; ∆S+ve; ∆G=-ve

The correct answer is:
∆H=-ve; ∆S+ve; ∆G=-ve

Solution:
By applying the Helmholtz equation: it shows the relationship between Change in enthalpy ∆H, change in entropy∆S & change in free energy∆G

∆G = ∆H -T∆S

For spontaneous reaction

∆G = -Ve , ∆S = +Ve and ∆H = -Ve

Topic: Chemistry, Thermodynamics (C), NEET
Which is CORRECT for the fern Dryopteris?

Options:
A Sporophyte is partially dependent on gametophyte
B Sporophyte is independent
C Gametophyte is independent
D Both B and C

The correct answer is:
Both B and C

Solution:
Dryopteris a type of fern belongs to the class of Pteropsida. It is commonly called as wood-fern. It is distributed widely in all parts of the world with more diversity in the Asiatic region. In this plant group, the rootstocks form crown with vase-like ring of fronds (equivalent of a leaf). The sori in it are round and stipes have prominent scales.
It shows heteromorphic alternation of generation where the sporophyte is dominant and independent. The gametophyte is haploid and independent as well and it reproduces sexually.

Topic: Biology, Plant Kingdom, NEET
Which is correct in case of van der Waal's adsorption?

Options:
A High temperature, low pressure
B Low temperature, high pressure
C Low temperature, low pressure
D High temperature, high pressure

The correct answer is:
Low temperature, high pressure

Solution:
Physical or van der Waal's adsorption is more pronounced at low temperature and high pressure as it is an exothermic process so low temperature and high pressure favours it.

Topic: Chemistry, Surface Chemistry, NEET
Which is CORRECT regarding convergent evolution?

Options:
A Convergent evolution indicates common ancestry.
B Thorn of Bougainvillea and tendrils of Cucurbita are examples of convergent evolution.
C Selection of similar adaptive features in different groups of organisms but towards the same function is convergent evolution.
D Homologous organs are result of convergent evolution.

The correct answer is:
Selection of similar adaptive features in different groups of organisms but towards the same function is convergent evolution.

Solution:
Convergent evolution refers to the evolution of structures which perform similar functions, but have different structures. The selection of similar features, which have been modified for the purpose of adaptation, but perform similar functions, is convergent evolution.
Convergent evolution does not indicate common ancestry. Common ancestry is indicated by divergent evolution.
Thorns of Bougainvillea and tendrils of Cucurbita are examples of divergent evolution.
Homologous organs also form as a result of divergent evolution.

Topic: Biology, Evolution, NEET
Which is diamagnetic?

Options:
A $\left[\mathrm{Cp}\left(\mathrm{F}_6\right)\right]^{3-}$
B $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$
C $\left[\mathrm{NiCl}_4\right]^{2-}$
D $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$

The correct answer is:
$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$

Solution:
$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is dimagnetic

Topic: Chemistry, Coordination Compounds, NEET, NEET 2013 (Karnataka)
Which is following is not a steroid hormone?

Options:
A Aldosterone
B Androgen
C Estrogen
D LH

The correct answer is:
LH

Solution:
(i) Peptide, polypeptide, protein hormones (e.g., insulin, glucagon, pituitary hormones, hypothalamic hormones, etc.)
(ii) Steroids (e.g., cortisol, testosterone, estradiol and progesterone)
(iii) Iodothyronines (thyroid hormones)
(iv) Amino-acid derivatives (e.g., epinephrine).

Topic: Biology, Chemical Coordination and Integration, NEET
Which is having a minimum wavelength?

Options:
A X-rays
B Ultraviolet rays
C $\gamma$-rays
D Cosmic rays

The correct answer is:
Cosmic rays

Solution:
Cosmic rays, having very short wavelength.
Wavelengths $\rightarrow$
$\mathrm{X}$-ray $\Rightarrow 1 Å$ to $100 Å$
Ultraviolet rays $\rightarrow 100 Å$ to $1 Å$
V-rays $\rightarrow 0.001 Å$ to $1 Å$
Cosmic rays $\rightarrow$ upto $4 \times 10^{-3} Å$

Topic: Physics, Electromagnetic Waves, NEET, NEET 2002
Which is incorrect statement for XeF2 ?

Options:
A It has linear structure
B It is hydrolysed rapidly in aqueous solution of a base
C It oxidizes Cl- and I- to Cl2 and I2 respectively
D It cannot act as F- donor

The correct answer is:
It cannot act as F- donor

Solution:
It acts as a F- donor and forms complexes with covalent fluorides like PF5,AsF5 and SbF5 .
XeF2+PF5→[XeF]+[PF6]-
A. the five electrons pairs form trigonal bipyramid with three lone pairs in equatorial positions. Hence, the structure of XeF2 becomes linear in accordance with VSEPR theory.
B. 2XeF2+2H2O→2Xe+4HF+O2
C. (i) XeF2+2HCl→2HF+Xe+Cl2
(ii) XeF2+2KI→Xe+2KF+I2

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which is incorrect statement in the following?

Options:
A α -rays have more penetrating power than β -rays
B α -rays have less penetrating power than γ -rays
C β -rays have less penetrating power than γ -rays
D β -rays have more penetrating power than α -rays

The correct answer is:
α -rays have more penetrating power than β -rays

Solution:
The order of penetrating power is : α<β<γ -rays. It is due to lower mass and high speed.

Topic: Chemistry, Chemical Kinetics, NEET
Which is known as blister copper?

Options:
A Pure copper
B 98% copper
C Ore of copper
D Alloy of copper

The correct answer is:
98% copper

Solution:
metallic copper of a black blistered surface, being the product of converting copper matte and being about 98.5 to 99.5 per cent pure is also bessemer copper.

Topic: Chemistry, d and f Block Elements, NEET
Which is known as oil of winter green

Options:
A Phenyl benzoate
B Phenyl salicylate
C Phenyl acetate
D Methyl salicylate

The correct answer is:
Methyl salicylate

Solution:
It is a colorless, viscous liquid with a aweet odor. It is methyl ester of salicylic acid. It is ingredient in mint candies.

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Which is most basic in character?

Options:
A NaOH
B KOH
C RbOH
D LiOH

The correct answer is:
RbOH

Solution:
As âEN>1.4 basic nature of hydoxide increases.
In alkali group metal on moving top to bottom electro negativity decreases hence
âENâ so basic nature increases.
Basic nature of hydroxides increase down the group.
LiOH < NaOH < KOH < RbOH

Topic: Chemistry, s Block Elements, NEET
Which is not a character of Klinefelter's syndrome?

Options:
A Trisomy
B Gynaecomastia
C Mental retardation
D Sterile individual

The correct answer is:
Mental retardation

Solution:
Chromosomal disorder occurs when there is addition or deletion of chromosome in the individual. In case of trisomy of the 21st chromosome causes Down's syndrome. XXY condition is called Klinefelter's syndrome where individual has an extra copy of X chromosome. In such condition, the individual shows overall masculine development but has feminine characteristic as well like breast development (Gynaecomastia). The individual is sterile but does not have any mental retardation unlike in Down's syndrome.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which is not a part of hindbrain?

Options:
A Thalamus
B Cerebellum
C Pons Varolii
D Medulla

The correct answer is:
Thalamus

Solution:
Hindbrain includes three parts, i.e., cerebellum, pons varolii, and medulla oblongata. Thalamus is present in the forebrain.

Topic: Biology, Neural Control and Coordination, NEET
Which is not a symptom of exophthalmic goiter?

Options:
A Degenerating sex organs
B Protrusion of eyeball
C Frightened look to the patient
D Hyperthyroidism

The correct answer is:
Degenerating sex organs

Solution:
Exophthalmic goitre (Grave's disease) is thyroid enlargement in which the thyroid secretes excessive amount of thyroid hormones. It is characterized by protrusion of eye balls because of fluid accumulation behind them, loss of weight, rapid heart beat, nervousness, restlessness.

Topic: Biology, Chemical Coordination and Integration, NEET
Which is not an autosomal chromosomal disorder?

Options:
A Down’s syndrome
B Turner’s syndrome
C Klinefelter’s syndrome
D Edwards syndrome

The correct answer is:
Turner’s syndrome

Solution:
Turner’s syndrome is caused by the loss of an X chromosome, which is a sex chromosome, not an autosome.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which is not an example of an ideal solution?

Options:
A C6H14+C7H16
B H2O+C4H9OH
C C2H5Br+C2H5I
D CCl4+SiCl4

The correct answer is:
H2O+C4H9OH

Solution:
H2O and C4H9OH form solution with positive deviation.
So, ÎH=+ve,âV=+ve .

Topic: Chemistry, Solutions, NEET
Which is not an example of ex situ conservation?

Options:
A Wild life safari park
B National park
C Zoological Park
D Botanical garden

The correct answer is:
National park

Solution:
In-situ conservation, the conservation of species in their natural habitats, is considered the most appropriate way of conserving biodiversity. Conserving the areas where populations of species exist naturally is an underlying condition for the conservation of biodiversity. The national park is the best example of this type of conservation.

Topic: Biology, Biodiversity and its Conservation, NEET
Which is not an opiate narcotic?

Options:
A Amphetamine
B Morphine
C Heroin
D Pethidine

The correct answer is:
Amphetamine

Solution:
Amphetamine is a stimulant. It is a potent central nervous system stimulant that is used in the treatment of attention deficit disorder.

Topic: Biology, Human Health and Diseases, NEET
Which is not correctly matched?

Options:
A Annelida â Enterocoelomate
B Platyhelminthes → Acoelomate
C Arthropoda → Schizocoelomate
D Nemathelminthes → Pseudocoelomate

The correct answer is:
Annelida â Enterocoelomate

Solution:
Annelida possess true coelom. Their coelom is schizocoelic in origin (i.e., it is formed by the splitting of embryonic mesoderm), thus they can also be called schizocoelomata. Phylum Echinodermata and Chordata have enterocoelom, where the coelom is formed by the splitting of endoderm.

Topic: Biology, Animal Kingdom, NEET
Which is not correctly matched?

Options:
A Lipase - Hydrolysis of fats
B Isomerases - Joining of similar substrate and management of substrate
C Polymerase - Chain elongation
D DNA ligase - joins the DNA strands together by catalyzing the formation of phosphoester bonds.

The correct answer is:
DNA ligase - joins the DNA strands together by catalyzing the formation of phosphoester bonds.

Solution:
DNA ligase adjoins the nucleotides in the DNA strand. The enzyme facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which is not the property of a hydrophilic sols?

Options:
A High concentration of dispersed phase can be easily attained
B Coagulation is reversible
C Viscosity and surface tension are nearly the same as that of water
D The charge on the particle depends upon the pH value of the medium, it may be +ve, -ve or even zero

The correct answer is:
Viscosity and surface tension are nearly the same as that of water

Solution:
Here statement C is not the property of a hydrophilic sols as viscosity of hydrophilic sols is much higher than water, but surface tension in lower than that of water.

Topic: Chemistry, Surface Chemistry, NEET
Which is not true about metal carbonyls?

Options:
A Here CO acts as a Lewis base as well as Lewis acid
B Here metal acts as Lewis base as well as as Lewis acid
C Here dπ-pπ back bonding takes place
D Here pπ-pπ back bonding takes place

The correct answer is:
Here pπ-pπ back bonding takes place

Solution:
CO is called π -acid ligand. In metal carbonyl complexes, there is donation of an electron pair from carbon to the empty orbital of metal and then simultaneously a back π -bonding is formed by sideways overlap of a filled orbital on the metal with empty anti-bonding π2py* orbital of CO.

Topic: Chemistry, Coordination Compounds, NEET
Which is not true above white phosphorus?

Options:
A 6 P-P single bods
B 4 P-P single bonds
C 4 lone pair of electrons
D P – P – P angle of 60°

The correct answer is:
4 P-P single bonds

Solution:
Here B is wrong while rest other statements are correct.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which is not true for haplodiploid sex determination?

Options:
A It is reported in honey bees.
B In this type, the male produces sperms by meiosis.
C They do not have a father and thus cannot have sons.
D In this type, the unfertilized egg develops as a male by means of parthenogenesis.

The correct answer is:
In this type, the male produces sperms by meiosis.

Solution:
Haploid diploid sex determination process has one of the individual as haploid (male) and the other as diploid (female). Honey bees follow this pattern of sex determination. The males are haploid developed by process of parthenogenesis and produce gametes by process of mitosis. The females are diploid and the queen produces gametes by meiosis process.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which is not true for root pressure?

Options:
A Positive hydrostatic pressure.
B Maximum during the day and minimum during night.
C Responsible for guttation
D Develops due to metabolic activity of roots.

The correct answer is:
Maximum during the day and minimum during night.

Solution:
Effects of root pressure is also observable at night and early morning when evaporation is low. Root pressure can, at best, only provide a modest push in the overall process of water transport.

Topic: Biology, Transport in Plants, NEET
Which is not true for test cross?

Options:
A F2 dihybrid test cross ratio 1:1:1:1.
B It is performed to know the alleles of a gene in an individual.
C A test cross is a type of back cross.
D Dominant offsprings in test cross is always homozygous.

The correct answer is:
Dominant offsprings in test cross is always homozygous.

Solution:
In a test cross, to know the genotype of the individual, it is crossed with a recessive parent. If a plant with dominant phenotype is homozygous than all individual produced shows dominant phenotype. If a plant with dominant phenotype is heterozygous than F2 dihybrid test cross ratio 1:1:1:1 .

Topic: Biology, Principles of Inheritance and Variation, NEET
Which is not true regarding biodiversity?

Options:
A It provides more productive ecosystem
B It changes along the altitude
C Highest in tropical regions
D Increases with the increase in latitude.

The correct answer is:
Increases with the increase in latitude.

Solution:
In general, species diversity decreases as we move away from the equator towards the poles. With very few exceptions, tropics (latitudinal range of 23.5o N to 23.5o S) harbor more species than temperate or polar areas.

Topic: Biology, Biodiversity and its Conservation, NEET
Which is not true regarding nylons?

Options:
A Usually a high melting point solid polymer
B Possesses a very high degree of crystallinity
C Nylons are usually hydrophobic
D Nylons have very high mechanical strength

The correct answer is:
Nylons are usually hydrophobic

Solution:
Due to presence of amide groups, nylon forms intermolecular H-bond with water and therefore, possesses high hydrophilicity.

Topic: Chemistry, Polymers, NEET
Which is not true regarding rayon?

Options:
A It is pure regenerated cellulose
B It is obtained by dissolving wood pulp in alkaline CS2
C It is obtained by passing Na-salt of cellulose xanthate through spinneret into aqueous NaHCO3 solution
D It is extracted as fibres of cellulose

The correct answer is:
It is obtained by dissolving wood pulp in alkaline CS2

Solution:
Here only option (B) is not true as Wood-pulp, on dissolving in CS2 -alkali solution forms sodium salt of cellulose xanthate not the rayon.
Rest all are correct regarding Rayon.

Topic: Chemistry, Polymers, NEET
Which is obtained when chloroform is treated with conc. HNO3?

Options:
A CHCl2NO2
B CCl3NO2
C CHCl2NO3
D None of these

The correct answer is:
CCl3NO2

Solution:
CHCl 3 + Chloroform conc. HNO 3 → CCl 3 − NO 2 Chloropicrin + H 2 O

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which is related with ringworm?

(i) Microsporum

(ii) Trichophyton

(ii) Epidermophyton

Options:
A i
B i, ii
C i, iii
D i, ii, iii

The correct answer is:
i, ii, iii

Solution:
Dermatophytosis is a fungal disease also called tinea. It affects the scalp, nails, feet, etc. Due to the appearance of a red ring on the body, it is called ringworm. It is caused by fungus Microsporum, Trichophyton & Epidermophyton which are collectively called dermatophytes.

Topic: Biology, Human Health and Diseases, NEET
Which is the alkane having the lowest melting point among themselves?

Options:
A Methane
B Ethane
C Propane
D Butane

The correct answer is:
Propane

Solution:
Correct Option is : 3
Propane

Topic: Chemistry, Hydrocarbons, NEET
Which is the appropriate reagent for the given transformation

Options:
A Zn(Hg),HCl
B NH 2 NH 2 ,  OH −
C H2/Ni
D NaBH4

The correct answer is:
NH 2 NH 2 ,  OH −

Solution:
Both Zn(Hg),HCl and NH2NH2,OH- can reduce -COCH3 group to -CH2-CH3 group, but HCl will also bring about protonation of alcohol to form alkyl halide. Therefore, appropriate reagent for the conversion is NH2NH2,OH- .

Topic: Chemistry, Hydrocarbons, NEET
Which is the basis of evolution?

Options:
A Cell
B Individual
C Population
D Species

The correct answer is:
Species

Solution:
Species is considered as the basis for evolution. Species is a natural inbreeding population; hence, the genetic variations appearing among the members of a population having similar species forms the basis of evolution. A single species or two different species may give rise to the formation of new species.

Topic: Biology, Evolution, NEET
Which is the basis of genetic mapping of human genome as well as DNA fingerprinting?

Options:
A Polymorphism in DNA sequence
B Single nucleotide polymorphism
C Polymorphism in hnRNA sequence
D Polymorphism in RNA sequence

The correct answer is:
Polymorphism in DNA sequence

Solution:
Allelic sequence variation is described as a DNA polymorphism if more than one variant (allele) at a locus occurs in the human population with a frequency greater than 0.01. If an inheritable mutation is observed in a population at the high frequency it is referred to as DNA polymorphism. Polymorphism in DNA sequence is the basis of genetic mapping of human genome as well as of DNA fingerprinting.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2020 (Phase 2)
Which is the best combination of reagent for the reaction

Options:
A KMnO4, H3O+
B m-CPBA, CH2Cl2
C (i) 9-BBN (ii) NaOH, H2O2
D (i) Hg(OAc)2, H2O (ii) NaBH4

The correct answer is:
(i) Hg(OAc)2, H2O (ii) NaBH4

Solution:
Oxymercuration-demercuration brings about Markownikoff hydration of alkene without rearrangement.

Topic: Chemistry, Hydrocarbons, NEET
Which is the best description of the behaviour of bromine in the reaction given below?
$$
\mathrm{H}_2 \mathrm{O}+\mathrm{Br}_2 \rightarrow \mathrm{HOBr}+\mathrm{HBr}
$$

Options:
A Proton acceptor only
B Both oxidised and reduced
C Oxidised only
D Reduced only

The correct answer is:
Both oxidised and reduced

Solution:
In the given reaction, the oxidation number of bromine increases from 0 to +1 and decreases from 0 to -1 .
Due to this reason bromine is both oxidised as well as reduced.
$$
: \mathrm{H}_2 \mathrm{O}+\stackrel{0}{\mathrm{Br}_2} \longrightarrow \mathrm{HOBr}+\mathrm{HBr}^{-1}
$$
Caution
Some students understood that the given reaction is redox reaction, but confuse with fact that redox reaction is the reaction in both oxidation and reduction occurs.

Topic: Chemistry, Redox Reactions, NEET, NEET 2004
Which is the best description of the berhaviour of bromine in the reaction given below?
H2O+Br2→HOBr+HBr

Options:
A proton acceptor only
B both oxidised and reduced
C oxidised only
D reduced only

The correct answer is:
both oxidised and reduced

Solution:
H2O+Br20→HOBr+1+HBr-1
In the above reaction the oxidation number of Br2 increases from zero (in Br2 ) to +1 (in HOBr) and decreases from zero (in Br2 ) to – 1 (in HBr). Thus Br2 is oxidised as well as reduced and hence it is a redox reaction.

Topic: Chemistry, Redox Reactions, NEET
Which is the classification not used for a lion?

Options:
A Kingdom: Animalia
B Phylum: Chordata
C Class: Primata
D Order: Insecta

The correct answer is:
Order: Insecta

Solution:
A lion is classified as a mammal (Class: Mammalia) and as a carnivore (Order: Carnivora.

Topic: Biology, Animal Kingdom, NEET
Which is the common character between all the mammals?

Options:
A They are oviparous
B They are herbivorous
C They are carnivorous
D They have seven cervical vertebrae

The correct answer is:
They have seven cervical vertebrae

Solution:
The most unique mammalian characteristic is the presence of milk-producing glands (mammary glands) by which the young ones are nourished. They have two pairs of limbs, adapted for walking, running, climbing, burrowing, swimming, or flying. The skin of mammals is unique in possessing hair. External ears or pinnae are present. Different types of teeth are present in the jaw. The heart is four-chambered. The presence of seven cervical vertebrae. They are homoiothermic. Respiration is by lungs. Sexes are separate and fertilization is internal. They are viviparous with few exceptions and development is direct.

Topic: Biology, Animal Kingdom, NEET
Which is the correct about chemisorptions?

Options:
A Involves multilayer formation of adsorbent on adsorbate
B It is irreversible in nature
C Decreases with increase of temperature
D Involves the weak attractive interactions between adsorbent and adsorbate

The correct answer is:
It is irreversible in nature

Solution:
Chemical adsorption is irreversible due to formation of new strong chemical bonds. It is unilayer due formation of new chemical compound. It first increases with increase in temperature due to supply of energy of activation then decreases due to breaking of covalent bond.

Topic: Chemistry, Surface Chemistry, NEET
Which is the correct balanced reaction of acidified permanganate solution with iron(II) ions?

Options:
A MnO4-+ 8H++ 5Fe2+→ Mn2++ 4H2O + 5Fe3+
B 3MnO4-+ 5H++ 3Fe2+→ Mn2++ H2O + 2Fe3+
C MnO4-+ 8H++ 5Fe2+→ 4Mn2++ 3H2O + 7Fe3+
D MnO4-+ 4H++ 6Fe2+→ 2Mn2++ 2H2O + Fe3+

The correct answer is:
MnO4-+ 8H++ 5Fe2+→ Mn2++ 4H2O + 5Fe3+

Solution:
Correct Option is : (A)
MnO4-+ 8H++ 5Fe2+→ Mn2++ 4H2O + 5Fe3+

Topic: Chemistry, d and f Block Elements, NEET
Which is the correct balanced reaction of acidified permanganate solution with oxalic acid?

Options:
A MnO4-+ 6C2O42-+10H+→ 3Mn2++ 7H2O +10CO2
B 2MnO4-+ 5C2O42-+16H+→ 2Mn2++ 8H2O +10CO2
C 2MnO4-+ 4C2O42-+16H+→ 2Mn2++ 5H2O +12CO2
D MnO4-+ 3C2O42-+13H+→ 4Mn2++ 6H2O +8CO2

The correct answer is:
2MnO4-+ 5C2O42-+16H+→ 2Mn2++ 8H2O +10CO2

Solution:
Correct Option is : (B)
2MnO4-+ 5C2O42-+16H+→ 2Mn2++ 8H2O +10CO2

Topic: Chemistry, d and f Block Elements, NEET