datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is the correct option about axial B–A–B angle and equatorial B–A–B angle of trigonal bipyramidal geometry?

Options:
A 120, 90
B 90, 90
C 109.5,109.5
D 90,120

The correct answer is:
90,120

Solution:
Correct Option is : 4
90,120

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is the correct option for decreasing order of concentrations of different types of antibodies which are produced in our body?

Options:
A IgG,IgA,IgM,IgD,IgE
B IgM,IgG,IgA,IgD,IgE
C IgE,IgD,IgM,IgA,IgG
D IgE,IgD,IgA,IgG,IgM

The correct answer is:
IgG,IgA,IgM,IgD,IgE

Solution:
There are five different types of antibodies which are secreted by plasma cells in our body. Their concentration are: IgG 65-75%, IgA 10-15%, IgM 7-10%, IgD 1%, IgE less than 1%

Topic: Biology, Human Health and Diseases, NEET
Which of the following is the correct order for increasing bond angle?

Options:
A NH3<PH3<AsH3<SbH3
B H2O<OF2<Cl2O
C H3Te+<H3Se+<H3S+<H3O+
D BF3<BCl3<BBr3<BI3

The correct answer is:
H3Te+<H3Se+<H3S+<H3O+

Solution:
The correct order of bond angle is H3Te+<H3Se+<H3S+<H3O+
while the rest orders are incorrect and their correct order is as follows
NH3>PH3>AsH3>SbH3
OF2<OH2<OCl2
BF3=BCl3=BBr3=BI3

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is the correct order in evolutionary history of man?

Options:
A Homo habilis → Homo erectus → Cromagnon man → Neanderthal man
B Cromagnon man → Neanderthal man → Homo erectus → Homo habilis
C Homo erectus → Homo habilis → Neanderthal man → Cromagnon man
D Homo habilis → Homo erectus → Neanderthal man → Cromagnon man

The correct answer is:
Homo habilis → Homo erectus → Neanderthal man → Cromagnon man

Solution:
The correct order in evolutionary history of human is as follows: Homo habilis → Homo erectus → Neanderthal man → Cromagnon man. The first human like being the hominid was Homo habilis, probably did not eat meat.

Topic: Biology, Evolution, NEET
Which of the following is the correct order of basicity in aqueous phase?

Options:
A Methanamine> N-methylmethanamine> N,N-dimethylmethanamine
B N,N-dimethylmethanamine> N-methylmethanamine> Methanamine
C N-methylmethanamine> Methanamine> N,N-dimethylmethanamine
D N-methylmethanamine> N,N-dimethylmethanamine> Methanamine

The correct answer is:
N-methylmethanamine> Methanamine> N,N-dimethylmethanamine

Solution:
Correct Option is : 3
N-methylmethanamine> Methanamine> N,N-dimethylmethanamine

Topic: Chemistry, Amines, NEET
Which of the following is the correct order of basicity in aqueous phase?

Options:
A N,N-dimethylaniline> N-methylaniline> Aniline
B Aniline> N-methylaniline> N,N-dimethylaniline
C N-methylaniline> Aniline> N,N-dimethylaniline
D Aniline> N,N-dimethylaniline> N-methylaniline

The correct answer is:
N,N-dimethylaniline> N-methylaniline> Aniline

Solution:
Correct Option is : 1
N,N-dimethylaniline> N-methylaniline> Aniline

Topic: Chemistry, Amines, NEET
Which of the following is the correct order of boiling point among these compounds: n-C4H9NH2, (C2H5)2NH, C2H5N(CH3)2, C2H5CH(CH3)2, n-C4H9OH?

Options:
A n-C4H9OH>n-C4H9NH2>(C2H5)2NH>C2H5N(CH3)2>C2H5CH(CH3)2
B n-C4H9NH2>n-C4H9OH>(C2H5)2NH>C2H5N(CH3)2>C2H5CH(CH3)2
C n-C4H9OH>C2H5N(CH3)2>(C2H5)2NH>n-C4H9NH2>C2H5CH(CH3)2
D n-C4H9OH>C2H5CH(CH3)2>n-C4H9NH2>(C2H5)2NH>C2H5N(CH3)2

The correct answer is:
n-C4H9OH>n-C4H9NH2>(C2H5)2NH>C2H5N(CH3)2>C2H5CH(CH3)2

Solution:
Correct Option is : 1
n-C4H9OH>n-C4H9NH2>(C2H5)2NH>C2H5N(CH3)2>C2H5CH(CH3)2

Topic: Chemistry, Amines, NEET
Which of the following is the correct order of boiling point of group 15 hydrides?

Options:
A PH3333
B NH3333
C SbH3333
D NH3333

The correct answer is:
PH3333

Solution:
Correct Option is : 1
PH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of boiling points of alkyl halides?

Options:
A CH3Cl3Br3I
B CH3Br3I3Cl
C CH3I3Cl3Br
D CH3Br3Cl3I

The correct answer is:
CH3Cl3Br3I

Solution:
Correct Option is : 1
CH3Cl3Br3I

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is the correct order of boiling points of alkyl halides?

Options:
A CH3Br3CH2Cl3I
B CH3Br3I3CH2Cl
C CH3CH2Cl3Br3I
D CH3I3CH2Cl3Br

The correct answer is:
CH3Br3CH2Cl3I

Solution:
Correct Option is : 1
CH3Br3CH2Cl3I

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is the correct order of boiling points of alkyl halides?

Options:
A CH3CH2CH2Br3CH2CH2Cl3CH2CH2I
B CH3CH2CH2Cl3CH2CH2Br3CH2CH2I
C CH3CH2CH2I3CH2CH2Cl3CH2CH2Br
D CH3CH2CH2Br3CH2CH2I3CH2CH2Cl

The correct answer is:
CH3CH2CH2Cl3CH2CH2Br3CH2CH2I

Solution:
Correct Option is : 2
CH3CH2CH2Cl3CH2CH2Br3CH2CH2I

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is the correct order of boiling points of alkyl halides?

Options:
A CH3CH2Br3CH2I3CH2Cl
B CH3CH2Br3CH2Cl3CH2I
C CH3CH2I3CH2Cl3CH2Br
D CH3CH2Cl3CH2Br3CH2I

The correct answer is:
CH3CH2Cl3CH2Br3CH2I

Solution:
Correct Option is : 4
CH3CH2Cl3CH2Br3CH2I

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is the correct order of boiling points of halogens molecules?

Options:
A I22
22
B F222
2
C Cl22
22
D F22
22

The correct answer is:
F22
22

Solution:
Correct Option is : 4
F22
22

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of bond lengths?

Options:
A N222
B H222
C N222
D O222

The correct answer is:
H222

Solution:
Correct Option is : 2
H222

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is the correct order of dipole moment?

Options:
A $\mathrm{NH}_3 < \mathrm{BF}_3 < \mathrm{NF}_3 < \mathrm{H}_2 \mathrm{O}$
B $\mathrm{BF}_3 < \mathrm{NF}_3 < \mathrm{NH}_3 < \mathrm{H}_2 \mathrm{O}$
C $\mathrm{BF}_3 < \mathrm{NH}_3 < \mathrm{NF}_3 < \mathrm{H}_2 \mathrm{O}$
D $\mathrm{H}_2 \mathrm{O} < \mathrm{NF}_3 < \mathrm{NH}_3 < \mathrm{BF}_3$

The correct answer is:
$\mathrm{BF}_3 < \mathrm{NF}_3 < \mathrm{NH}_3 < \mathrm{H}_2 \mathrm{O}$

Solution:
$\mathrm{BF}_3$ has zero dipole moment as it is symmetrical in nature. $\mathrm{H}_2 \mathrm{O}$ has maximum dipole moment as it possess two lone pair of electrons. Between $\mathrm{NH}_3$ and $\mathrm{NF}_3, \mathrm{NH}_3$ has greater dipole moment though in $\mathrm{NH}_3$ and $\mathrm{NF}_3$, both $\mathrm{N}$ possesses one lone pair of electrons.
This is beacuse in case of $\mathrm{NH}_3$, the net $\mathrm{N}-\mathrm{H}$ bond dipole is in the same direction as the direction of dipole of lone pair. But in case of $\mathrm{NF}_3$, the direction of net dipole moment of three $-\mathrm{N}-\mathrm{F}$ bonds is opposite to that of the dipole moment of the lone pair. Thus, the correct of dipole moment is

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2019 (Odisha)
Which of the following is the correct order of E-H distance (E= N,P,As,S
b)of group 15 hydrides?

Options:
A NH3333
B SbH3333
C NH3333
D PH3333

The correct answer is:
NH3333

Solution:
Correct Option is : 3
NH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of enthalpy of formation of group 15 hydrides?

Options:
A NH3333
B PH3333
C NH3333
D SbH3333

The correct answer is:
NH3333

Solution:
Correct Option is : 1
NH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
. Which of the following is the correct order of HEH angle (where E= N,P,As,S
b) of group 15 hydrides?

Options:
A NH3333
B PH3333
C NH3333
D SbH3333

The correct answer is:
SbH3333

Solution:
Correct Option is : 4
SbH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of hydration enthalpy of halides?

Options:
A Cl-
---
B I-
---
C F--
-
D Cl--
--

The correct answer is:
I-
---

Solution:
Correct Option is : 2
I-
---

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

Options:
A SCN−<F−<CN−<C2O42−
B F−<SCN−<C2O42−<CN−
C CN−<C2O42−<SCN−<F−
D SCN−<F−<C2O42−<CN−

The correct answer is:
SCN−<F−<C2O42−<CN−

Solution:
\(\begin{aligned} & \mathrm{I}^{-}<\mathrm{Br}^{-}<\mathrm{S}^{2-}<\mathrm{SCN}^{-}(\mathrm{S}-\text { bonded })<\mathrm{Cl}^{-}<\mathrm{NO}_3^{-}<\mathrm{N}_3^{-}<\mathrm{F}^{-}<\mathrm{OH}^{-}<\mathrm{C}_2 \mathrm{O}_4{ }^{2-}<\mathrm{H}_2 \mathrm{O}<\mathrm{NCS}^{-}(\mathrm{N}-\text { bonded })< \\ & \mathrm{CH}_3 \mathrm{CN}<\text { py (pyridine) }<\mathrm{NH}_3<\text { en (ethylenediamine) }<\text { bipy }\left(2,2^{\prime} \text {-bipyridine) }<\text { phen (1,10-phenanthroline) }\right. \\ & <\mathrm{NO}_2^{-}\left(\mathrm{N} \text {-bonded) }<\mathrm{PPh}_3 \text { (Triphenylphosphine) }<\mathrm{CN}^{-}<\mathrm{CO}\right.\end{aligned}\)

Topic: Chemistry, Coordination Compounds, NEET, NEET 2020 (Phase 1)
Which of the following is the correct order of internuclear distance of isotopes of Hydrogen?

Options:
A H
B D
C H=D
D None of these

The correct answer is:
H=D

Solution:
Correct Option is : 3
H=D

Topic: Chemistry, Hydrogen, NEET
Which of the following is the correct order of Magnetic moments?

Options:
A Ti2+3+
B Cu2+2+
C Fe2+2+
D Cr2+2+

The correct answer is:
Cr2+2+

Solution:
Correct Option is : 4
Cr2+2+

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is the correct order of melting point of group 15 hydrides?

Options:
A NH3333
B PH3333
C NH3333
D SbH3333

The correct answer is:
PH3333

Solution:
Correct Option is : 2
PH3333

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of Melting points of halogens molecules?

Options:
A F22
22
B Cl22
22
C F222
2
D I22
22

The correct answer is:
F22
22

Solution:
Correct Option is : 1
F22
22

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of O–H bond length of H2O2in various states?

Options:
A O-HSolidGas
B O-HSolid>O-HGas
C O-HSolid=O-HGas
D None of these

The correct answer is:
O-HSolid>O-HGas

Solution:
Correct Option is : 2
O-HSolid>O-HGas

Topic: Chemistry, Hydrogen, NEET
Which of the following is the correct order of O–O bond length of H2O2in various states?

Options:
A O-OSolidGas
B O-OSolid>O-OGas
C O-OSolid=O-OGas
D None of these

The correct answer is:
O-OSolidGas

Solution:
Correct Option is : 1
O-OSolidGas

Topic: Chemistry, Hydrogen, NEET
Which of the following is the correct order of O-O-H bond angle of H2O2in various states?

Options:
A O-O-HSolid=O-O-HGas
B O-O-HSolidGas
C O-O-HSolid>O-O-HGas
D None of these

The correct answer is:
O-O-HSolid>O-O-HGas

Solution:
Correct Option is : 3
O-O-HSolid>O-O-HGas

Topic: Chemistry, Hydrogen, NEET
Which of the following is the correct order of pKbvalues in aqueous phase?

Options:
A Ethanamine> N-ethylethanamine> N,N-diethylethanamine
B N,N-diethylethanamine> N-ethylethanamine> Ethanamine
C Ethanamine> N,N-diethylethanamine> N-ethylethanamine
D N-ethylethanamine> N,N-diethylethanamine> Ethanamine

The correct answer is:
Ethanamine> N,N-diethylethanamine> N-ethylethanamine

Solution:
Correct Option is : 3
Ethanamine> N,N-diethylethanamine> N-ethylethanamine

Topic: Chemistry, Amines, NEET
Which of the following is the correct order of radius?

Options:
A H->H>H+
B Na+>F->O2-
C F->O2->Na+
D Al3+>Mg2+>N3-

The correct answer is:
H->H>H+

Solution:
For radius of atoms/ions
(i) For the same element:
radius of anion>atom>radius of cation
(ii) For iso-electronic species:
radiusâ1atomic number
Thus for option
a correct order âH-> H>H+
b correct order âO2->F->Na+
c correct order âO2->F->Na+
d correct order âN3->Mg2+>Al3+
Hence, H->H>H+ is the correct option.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following is the correct order of values of i for the following salts at 0.001 m?

Options:
A MgSO4< NaCl < KCl < K2SO4
B KCl < MgSO4< NaCl < K2SO4
C NaCl < KCl < MgSO4< K2SO4
D K2SO4< MgSO4< KCl < NaCl

The correct answer is:
MgSO4< NaCl < KCl < K2SO4

Solution:
Correct Option is : 1
MgSO4< NaCl < KCl < K2SO4

Topic: Chemistry, Solutions, NEET
Which of the following is the correct order of values of i for the following salts at 0.1 m?

Options:
A NaCl < KCl < MgSO4< K2SO4
B K2SO4< MgSO4< KCl < NaCl
C KCl < MgSO4< NaCl < K2SO4
D MgSO4< KCl < NaCl < K2SO4

The correct answer is:
MgSO4< KCl < NaCl < K2SO4

Solution:
Correct Option is : 4
MgSO4< KCl < NaCl < K2SO4

Topic: Chemistry, Solutions, NEET
. Which of the following is the correct order of X–X bond dissociation enthalpy of halogens molecules?

Options:
A I22
22
B I22
22
C Cl22
22
D F22
22

The correct answer is:
I22
22

Solution:
Correct Option is : 2
I22
22

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct order of X–X bond distance of halogens molecules?

Options:
A Cl22
22
B F22
22
C I22
22
D F222
2

The correct answer is:
F22
22

Solution:
Correct Option is : 2
F22
22

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct outermost electronic configuration of Cerium?

Options:
A 4f15d16s2
B 4f25d06d2
C 5d16s2
D 4f36s2

The correct answer is:
4f15d16s2

Solution:
Correct Option is : 1
4f15d16s2

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is the correct outermost electronic configuration of Gadolinium?

Options:
A 4f95d06s2
B 4f75d16s1
C 4f75d16s2
D 4f76s2

The correct answer is:
4f75d16s2

Solution:
Correct Option is : 3
4f75d16s2

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is the correct oxidation number of chlorine in the compound NaClO?

Options:
A +1
B -1
C 0
D +2

The correct answer is:
-1

Solution:
Correct Option is : (B)
-1

Topic: Chemistry, Redox Reactions, NEET
Which of the following is the correct pairing of characteristics about anther wall?

Options:
A

Hygroscopic nature	Innermost layer	Fibrous thickening of cellulose

Epidermis	Tapetum	Endothecium

B

Hygroscopic nature	Innermost layer	Fibrous thickening of cellulose

Endothecium	Tapetum	Middle layer

C

Hygroscopic nature	Innermost layer	Fibrous thickening of cellulose

Middle layer	Tapetum	Endothecium

D

Hygroscopic nature	Innermost layer	Fibrous thickening of cellulose

Endothecium	Tapetum	Endothecium

The correct answer is:

Hygroscopic nature	Innermost layer	Fibrous thickening of cellulose

Endothecium	Tapetum	Endothecium

Solution:
The anther is the part of the stamen where pollen grains are produced. It has the microsporangia and has multiple layers surrounding the pollen sac. Pollen sac is the site for production of pollen grain. A typical microsporangia has four layers - Epidermis (outermost layer, function- protection), endothecium (hygroscopic in nature, function - promote dehiscence) followed by middle layers (function- protection) and tapetum (innermost layer, nutritive in function). The endothecium has fibrous thickening which again helps in dehiscence and pollen dispersal.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is the correct relation about axial B–A–B angle and equatorial B–A–B angle of Octahedral geometry?

Options:
A axial B–A–B angle < equatorial B–A–B angle
B axial B–A–B angle > equatorial B–A–B angle
C axial B–A–B angle = equatorial B–A–B angle
D None of these

The correct answer is:
axial B–A–B angle = equatorial B–A–B angle

Solution:
Correct Option is : 3
axial B–A–B angle = equatorial B–A–B angle

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is the correct relationship between the axial angles of Monoclinic crystal systems?

Options:
A $\alpha=eta=\gamma$
B $\alpha
eq eta
eq \gamma$
C $\alpha
eq eta, \gamma=90$
D $\alpha=\gamma=90, eta
eq 90 /$

The correct answer is:
$\alpha=\gamma=90, eta
eq 90 /$

Solution:
Correct Option is : 4
$\alpha=\gamma=90, eta
eq 90 /$

Topic: Chemistry, Solid State, NEET
Which of the following is the correct representation of detritus food chain?

Options:
A Detritus (dead organic matter) â detrivores â decomposers
B Detritus â microbes â detrivores â decomposers
C Detrivores â organic matter â microbes â decomposers
D Grass → detrivores → decomposers

The correct answer is:
Detritus (dead organic matter) → detrivores → decomposers

Solution:
It begins with detritus such as dead bodies of animals or fallen leaves, which are then eaten by decomposers or detritivores. These detritivores are in turn consumed by their predators.

Topic: Biology, Ecosystem, NEET
Which of the following is the correct representation of the three levels of biodiversity?

Options:
A Geographical diversity, reproductive diversity and habitat diversity
B Ecological diversity, genetic diversity and biome diversity
C Genetic diversity, species diversity and ecological diversity
D Geographical diversity, habitat diversity and ecological diversity

The correct answer is:
Genetic diversity, species diversity and ecological diversity

Solution:
Immense diversity (heterogeneity) exists in our biosphere, not only at the species level but at all the levels of biological organisation ranging from the macromolecules within cells to biomes.
Sociobiologist Edward Wilson described the combined diversity at all the levels of biological organisation. These are genetic diversity, species diversity and ecological diversity.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is the correct Second ionisation enthalpy order of Group 13 elements?

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

The correct answer is:
B>Ga>Tl>In>Al

Solution:
Correct Option is : 2
B>Ga>Tl>In>Al

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following is the correct sequence in the food chain?

Options:
A Fallen leaves â bacteria â insect larvae â birds
B Phytoplankton â zooplankton â fish
C Grasses â fox â rabbit
D Grasses â chameleon â insects â birds

The correct answer is:
Phytoplankton â zooplankton â fish

Solution:
This is because phytoplankton is eaten by zooplankton which in turn is eaten by fishes.

Topic: Biology, Ecosystem, NEET
Which of the following is the correct sequence of events in the origin of life?
(i) Formation of protobionts
(ii) Synthesis of organic monomers
(iii) Synthesis of organic polymers
(iv) Formation of DNA-based genetic systems

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

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

Solution:
The correct sequence of events in the origin of life is:
Synthesis of organic matter, followed by that of organic polymers. This led to the formation of protobionts and further DNA-based systems

Topic: Biology, Evolution, NEET, NEET 2016 (Phase 2)
Which of the following is the correct sequence of events in the origin of life?

(i) Formation of protobionts
(ii) Synthesis of organic monomers
(iii) Synthesis of organic polymers
(iv) Formation of DNA-based genetic systems

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

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

Solution:
The correct sequence of events in the origin of life is:
Synthesis of organic matter, followed by that of organic polymers. This led to the formation of protobionts and further DNA-based systems

Topic: Biology, Evolution, NEET
Which of the following is the correct sequence of glycolysis?

Options:
A G 6-P → PEP → 3-PGAL → 3-PGA
B G 6-P → 3-PGAL → 3-PGA → PEP
C G 6-P → PEP → 3-PGA → 3-PGAL
D G 6-P → 3-PGA → 3-PGAL → PEP

The correct answer is:
G 6-P → 3-PGAL → 3-PGA → PEP

Solution:
In glycolysis glucose and fructose are phosphorylated to form glucose -6-phosphate by the activity of enzyme hexokinase and then converted to fructose 1-6 biphosphate which splits into 3C PGAL and DHAP, which in subsequent steps gets oxidized to form PGA and then PEP which at the end produces pyruvic acid, the end product of glycolysis.

Topic: Biology, Respiration in Plants, NEET
Which of the following is the correct sequence of glycolysis?

Options:
A GÂ 6-PâPEPâ3-PGALâ3-PGA
B G 6-Pâ3-PGALâ3-PGAâPEP
C GÂ 6-PâPEPÂ âÂ 3-PGAâ3-PGAL
D GÂ 6-Pâ3-PGAâ3-PGALâPEP

The correct answer is:
G 6-Pâ3-PGALâ3-PGAâPEP

Solution:
In glycolysis, glucose and fructose are phosphorylated to form glucose-6-phosphate by the activity of enzyme hexokinase and then converted to fructose 1-6 biphosphate which splits into 3C PGAL and DHAP. In subsequent steps, these products get oxidized to form PGA and then PEP, which at the end produces pyruvic acid, the end product of glycolysis.

Topic: Biology, Respiration in Plants, NEET
Which of the following is the CORRECT sequence of PCR?

Options:
A Denaturation → Annealing → Extension
B Extension → Denaturation → Annealing
C Annealing → Extension → Denaturation
D Denaturation → Extension → Annealing

The correct answer is:
Denaturation → Annealing → Extension

Solution:
PCR is invented by Kary mullis. It means to amplify or form many copies of genes of DNA. It includes three steps. A) Denaturation: First the two DNA strands need to be separated. B) Annealing: The primers are attached to the target sequences and thus polymerization is initiated. C) Extension: New strands are made while old ones act as templates.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following is the correct sequence of the layers in a typical monocot root (from the outer surface to the pith)?

Options:
A Pericycle, cortex, endodermis, epiblema.
B Epiblema, endodermis, cortex, pericycle.
C Epiblema, cortex, endodermis, pericycle.
D Epiblema, pericycle, cortex, endodermis.

The correct answer is:
Epiblema, cortex, endodermis, pericycle.

Solution:
Epiblema is sometimes used in place of the epidermis in root. Thus, the correct sequence from outer to inner side will be epiblema, cortex, endodermis and pericycle.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is the correct set of events involved in the process of decomposition?

Options:
A Metabolism, Degradation, Leaching, Mineralisation
B Degradation, Fragmentation, Humification, Mineralisation, Leaching
C Fragmentation, Leaching, Anabolism, Mineralisation
D Fragmentation, Leaching, Catabolism, Humification, Mineralisation

The correct answer is:
Fragmentation, Leaching, Catabolism, Humification, Mineralisation

Solution:
Detritivores (e.g., earthworm) break down detritus into smaller particles. This process is called fragmentation. By the process of leaching, water-soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts. Bacterial and fungal enzymes degrade detritus into simpler inorganic substances. This process is called catabolism. It is important to note that all the above steps in decomposition operate simultaneously on the detritus. Humification and mineralisation occur during decomposition in the soil.

Topic: Biology, Ecosystem, NEET
Which of the following is the correct set of micronutrients for plants?

Options:
A Mg, Si, Fe, Cu, Ca
B Cu, Fe, Zn, B, Mn
C Mg, Fe, Zn, B, Mn
D Mo, Zn, Cl, Mg, Ca

The correct answer is:
Cu, Fe, Zn, B, Mn

Solution:
Plants require nutrients for proper growth and development. 16 elements are necessary for plants and are called essential elements as C, H, O, N, P, S, K, Mg, Ca, Fe, Cu, B, Zn, Mn, Mo, and Cl. These essential elements are categorized into 2 groups as macroelements and microelements. Macroelements are required by plants in larger amounts e.g., C, H, O, N, S, P, K, Ca, and Mg. Microelements or trace elements are required by plants in very small amounts i.e. in traces e.g., Fe, Cu, B, Mn, Mo, and Cl.

Topic: Biology, Mineral Nutrition, NEET