datavorous/entrance-exam-dataset huggingface dataset:
Which out of NH3and NF3has a higher dipole moment, and why?

Options:
A NH3has a higher dipole moment because nitrogen is more electronegative than fluorine.
B NF3has a higher dipole moment because it has more fluorine atoms than NH3.
C NF3has a higher dipole moment because it has a larger molecular size than NH3.
D NH3has a higher dipole moment because it has a greater electron density on the nitrogen atom due to hydrogen being less electronegative than fluorine

The correct answer is:
NH3has a higher dipole moment because it has a greater electron density on the nitrogen atom due to hydrogen being less electronegative than fluorine

Solution:
Correct Option is : (D)
NH3has a higher dipole moment because it has a greater electron density on the nitrogen atom due to hydrogen being less electronegative than fluorine

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which out of the following is a MISMATCHED pair?

Options:
A Hypostomatic - Stomata present more on lower epidermis than on upper epidermis
B Epistomatic - Stomata present more on upper epidermis than on lower epidermis
C Amphistomatic - Stomata non-functional or absent
D Sunken stomata - Stomata deep seated below the surface

The correct answer is:
Amphistomatic - Stomata non-functional or absent

Solution:
Stomata are pore in a plant's leaf through which water and gases are exchanged with the atmosphere. Stomata consist of three parts i.e., cell pore, guard cells, and subsidiary cells. Guard cells are specialized cells that surround cell pore and helps the stomata in opening and closing. There are some epidermal cells present around the guard cells that are known as subsidiary cells. On the basis of the position of stomata, they are of the following types i.e. hypostomatic, epistomatic, amphistomatic, and sunken stomata. In amphistomatic, the stomata are present on both sides of the leaf.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which out of the following statements is incorrect?

Options:
A Both ATP and NADPH $+\mathrm{H}^{+}$are synthesised during non-cyclic photophosphorylation.
B Stroma lamellae lack PS II and NADP reductase
C Grana lamellae have both PS I and PS II
D Cyclic photophosphorylation involves both PS I and PS II

The correct answer is:
Cyclic photophosphorylation involves both PS I and PS II

Solution:
Cyclic photophosphorylation involves only PS I.
Non cyclic photophosphorylation involves both PS I and PS II.

Topic: Biology, Photosynthesis in Higher Plants, NEET, NEET 2023 (Manipur)
Which oxidation reaction is preferred at the anode during the electrolysis of sodium chloride (NaCl) solution?

Options:
A Na+ (aq) → Na (s)
B H2O (l ) → O2(g) + 4H+(aq) + 4e-
C Cl- (aq) → ½ Cl2(g) + e-
D Both B and C

The correct answer is:
Both B and C

Solution:
During the electrolysis of sodium chloride (NaCl) solution, at the anode the following oxidation reactions are possible:Cl- (aq) → ½ Cl2(g) + e-H2O (l ) → O2(g) + 4H+(aq) + 4e-

Topic: Chemistry, Electrochemistry, NEET
Which oxidation state becomes increasingly stable with respect to disproportionation for arsenic, antimony, and bismuth?

Options:
A +1
B +3
C +5
D +7

The correct answer is:
+3

Solution:
The paragraph mentions that the +3 oxidation state in arsenic, antimony, and bismuth becomes increasingly stable with respect to disproportionation.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which oxidation state for nitrogen is correctly given?

Options:
A

Compound	Oxidation

NH3	+3

B

Compound	Oxidation
[Co(NH3)5Cl]	+1

C

Compound	Oxidation

Mg3 N2	-3

D

Compound	Oxidation
NH2 OH	+1

The correct answer is:

Compound	Oxidation

Mg3 N2	-3

Solution:
Correct oxidation number, for N-atom is compound oxidation number of N-atom
(a) NH3 ⟶-3
(b) [Co(NH3)5Cl] ⟶-3
(c) Mg3N2 ⟶-3
(d) NH2OH ⟶-1
∴ Correct answer is option (c)

Topic: Chemistry, Redox Reactions, NEET
Which oxidation state is more acidic among the Group 15 elements?

Options:
A The lower oxidation state
B The higher oxidation state
C Both are equally acidic
D None of the above

The correct answer is:
The higher oxidation state

Solution:
The paragraph states that the oxide in the higher oxidation state of the element is more acidic.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which oxidation state is more common in sulphur, selenium, and tellurium compounds with oxygen?

Options:
A +6
B -2
C +4
D +2

The correct answer is:
+4

Solution:
The paragraph states that sulphur, selenium, and tellurium usually show a +4 oxidation state in their compounds with oxygen.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which oxidation state of phosphorus do the oxoacids contain if they have both P–P and P–H bonds?

Options:
A +1
B +2
C +3
D +5

The correct answer is:
+3

Solution:
The paragraph explains that the oxoacids with both P–P and P–H bonds are in the +3 oxidation state of phosphorus.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which oxidation state of titanium is more stable Ti(III) or Ti(II)?

Options:
A Ti(I)
B Ti(II)
C Ti(III)
D Ti(IV)

The correct answer is:
Ti(IV)

Solution:
Titanium (IV) is more stable than Ti(III) or Ti(II).

Topic: Chemistry, d and f Block Elements, NEET
Which oxide of carbon is formed when malonic acid is warmed with P2O5

Options:
A Mixture of CO2 and CO
B C3O2
C C3O4
D Only CO2

The correct answer is:
C3O2

Solution:
when malonic acid is warmed with P2O5 carbon suboxide is formed
CH2COOH2→P2O5C3O2+H2OCarbonsuboxide

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Which oxide of carbon is obtained when malonic acid is heated with P2O5 at 575 K?

Options:
A CO
B CO2
C CO+CO2
D C3O2

The correct answer is:
C3O2

Solution:
when malonic acid is heated with P2O5 at 575 K carbon suboxide (C3O2) is formed

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Which oxide of carbon is obtained when potassium hexacyanoferrate (II) is warmed with sulphuric acid?

Options:
A CO
B CO2
C Both A and B
D C3O2

The correct answer is:
CO

Solution:
when potassium hexacyanoferrate (II) is warmed with sulphuric acid Carbon monoxide is formed as follows
K 4 Fe (CN) 6 +6 H 2 S O 4 +6 H 2 O→2 K 2 S O 4 +FeS O 4 +3 N H 4 2 S O 4 +6CO

Topic: Chemistry, Coordination Compounds, NEET
Which oxide of iodine in the following is the true covalent in nature?

Options:
A I2O4
B I2O5
C I2O7
D I2O9

The correct answer is:
I2O5

Solution:
In general, higher the oxidation state, more is the covalent character of the oxide. I2O7 & I2O9 do not exist. I2O4 is ionic in nature. It is infact iodyl iodate [IO]+[IO3]- . The only covalent oxide is I2O5 .

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which oxide of nitrogen condenses to a bluish liquid at -30° C, but on warming it changes into reddish brown gas?

Options:
A N2O3
B N2O5
C N2O4
D NO

The correct answer is:
N2O3

Solution:
N2O3 condenses to bluish liquid at -30° C but on warming to room temperature it decomposes to give a mixture of NO and NO2 .
N2O3→ΔNO+NO2

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

Options:
A N2O
B NO2
C N2O5
D NO

The correct answer is:
N2O5

Solution:
Nitrogen Pentaoxide N2O5 is an oxide of Nitrogen which is not a common Pollutant. Dinitrogen pentoxide is an unstable and dangerous oxidiser, which contains only nitrogen and oxygen. It is formed when oxygen and nitrogen react. In the atmosphere it attracts NOX gases that cause depletion of the ozone layer.

Topic: Chemistry, Environmental Chemistry, NEET, NEET 2018
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

Options:
A N2O
B NO2
C N2O5
D NO

The correct answer is:
N2O5

Solution:
Nitrogen Pentaoxide ( N2O5 ) is an oxide of Nitrogen which is not a common pollutant. Dinitrogen pentoxide is an unstable and dangerous oxidiser, which contains only nitrogen and oxygen. It is formed when oxygen and nitrogen react. In the atmosphere attracts NOX gases that cause depletion of the ozone layer. Rest other nitrogen oxides are common pollutants.

Topic: Chemistry, Environmental Chemistry, NEET
Which oxidizing agent can be used to convert primary alcohols into carboxylic acids in both neutral, acidic, or alkaline media?

Options:
A Potassium permanganate (KMnO4)
B Potassium dichromate (K2Cr2O7)
C Chromium trioxide (CrO3)
D Jones reagent

The correct answer is:
Potassium permanganate (KMnO4)

Solution:
Potassium permanganate can be used to convert primary alcohols into carboxylic acids in neutral, acidic, or alkaline media.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
Which pair contains both the phosphorius in +3 state?

Options:
A Orthophosphorous and hypophospheric acids.
B Pyrophosphorous and pyrophosphoric acids.
C Orthophosphorous and pyrophosphorous acids.
D Pyrophosphorous and hypophosphoric acids.

The correct answer is:
Orthophosphorous and pyrophosphorous acids.

Solution:
Acid	Formula	Formal oxidation state of phosphorous

Pyrophosphorous acid	H4P2O5	+3

Pyrophosphoric acid	H4P2O7	+5

Orthophosphorous	H3PO3	+3

Hypophosphoric acid	H4P2O6	+4

Both pyrophosphorous and orthophosphorous acid have +3 oxidation state.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which pair is not having similar types of roots?

Options:
A Mustard, Maize
B Monstera, Grass
C Mustard, Bean
D Jowar, Wheat

The correct answer is:
Mustard, Maize

Solution:
Maize is a monocot with fibrous roots and mustard is a dicot with a taproot. Bean and mustard both are dicots with a taproot. Wheat and jowar both are monocots with fibrous roots. In grass and monstera, adventitious roots are present.

Topic: Biology, Morphology of Flowering Plants, NEET
Which pair of carbonyl compounds can be differentiated by I2/NaOH ?

Options:
A
B
C
D

The correct answer is:

Solution:
can be differentiated by I2/NaOH as will give yellow precipitate but will not react with I2/NaOH .

Topic: Chemistry, Aldehydes and Ketones, NEET
Which pair of cells appear during the process of spermatogenesis?

Options:
A Spermatogonia, sperm lysin
B Oocyte, Spermatozoa
C Spematid, Primordial follicle
D Spermatogonia, Spermatozoa

The correct answer is:
Spermatogonia, Spermatozoa

Solution:
Spermatogonia are cuboidal cells that line the inner wall of the seminiferous tubule and these cells undergoes the process of meiosis to produce spermatozoan.

Topic: Biology, Human Reproduction, NEET
Which pair of electron interactions has the least repulsion?

Options:
A Lone pair (lp) – Lone pair (lp)
B Lone pair (lp) – Bond pair (bp)
C Bond pair (bp) – Bond pair (bp)
D Cannot be determined.

The correct answer is:
Bond pair (bp) – Bond pair (bp)

Solution:
The repulsive interaction of electron pairs decreases in the order: Lone pair (lp) – Lone pair (lp) > Lone pair (lp) – Bond pair (bp) > Bond pair (bp) – Bond pair (bp).

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which pair of products are formed when amorphous boron is burned in air?

Options:
A B2O3 and BN
B B2N3 and B2O3
C Borazine and H3BO3
D B2O3 and B2H6

The correct answer is:
B2O3 and BN

Solution:
Burning of amorphous boron in air at about 973 K gives B2O3 and BN
4B +  3O 2 → 973 K 2B 2 O 3
2B+N2âBurn2BN

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which pair of structures distinguish a nerve cell from other cells?

Options:
A Vacuoles and fibres
B Nucleus and mitochondria
C Perikaryon and dendrites
D Flagellum and medullary sheath

The correct answer is:
Perikaryon and dendrites

Solution:
The pair of structures that distinguish a nerve cell from other cells are perikaryon and dendrites. The soma or perikaryon or cyton, is the bulbous end of a neuron, containing the cell nucleus The processes which arise from neuron are called neurites. These are of two types: Dendrites and axons. Dendrites conduct the nerve impulse towards the nerve cell body and are called afferent processes.

Topic: Biology, Structural Organisation in Animals, NEET
Which pair of the following belongs to basidiomycetes?

Options:
A Puffballs and Claviceps
B Mucor and Ustilago
C Trichoderma and mushrooms
D Rust fungi and puffballs.

The correct answer is:
Rust fungi and puffballs.

Solution:
Commonly known forms of basidiomycetes are mushrooms, bracket fungi or puffballs. They grow in soil, on logs and tree stumps and in living plant bodies as parasites, e.g., rusts and smuts. The asexual spores are generally not found, but vegetative reproduction by fragmentation is common. The sex organs are absent, but plasmogamy is brought about by fusion of two vegetative or somatic cells of different strains or genotypes. The resultant structure is dikaryotic which ultimately gives rise to basidium. Karyogamy and meiosis take place in the basidium producing four basidiospores. The basidiospores are exogenously produced on the basidium (plural: basidia). The basidia are arranged in fruiting bodies called basidiocarps. Some common members are Agaricus (mushroom), Ustilago (smut) and Puccinia (rust fungus).

Topic: Biology, Biological Classification, NEET
Which pair of the following belongs to Basidiomycetes?

Options:
A puffballs and Claviceps
B Peziza and stink horns
C Morchella and mushrooms
D birds nest fungi and puffballs.

The correct answer is:
birds nest fungi and puffballs.

Solution:
Birds nest fungi (Cyathus), puffballs (Lycoperdon). Mushrooms (Agaricus), Stink horn - Basidiomycetes
Claviceps, Peziza, MorchellaAscomycetes
Related Theory
In Ascomycetes, asexual reproduction involves the production of conidiospore. During sexual reproduction, the ascocarp undergo meiosis to form ascospores. The lifecycle of basidiomycetes includes alternation of generations. Spores are generally produced through sexual reproduction, rather than asexual reproduction. The clubshaped basidium carries basidiospores. The Deuteromycetes use strictly asexual reproduction only (sexual reproduction absent). Zygomycetes reproduce asexually by producing sporangiospores. Sexual reproduction occurs by conjugation and form zygospores.

Topic: Biology, Biological Classification, NEET, NEET 2007
Which pair of the following belongs to Basidiomycetes?

Options:
A Sac fungi and mushrooms
B Bracket fungi and puffballs.
C Morels and smuts
D Puffballs and Claviceps

The correct answer is:
Bracket fungi and puffballs.

Solution:
The class Basidiomycetes includes those members that produce their basidia and basidiospores on or in a basidiocarp.

Topic: Biology, Biological Classification, NEET
Which pairs of bases form hydrogen bonds in DNA?

Options:
A Adenine with guanine
B Thymine with cytosine
C Adenine with thymine
D Cytosine with thymine

The correct answer is:
Adenine with thymine

Solution:
Adenine forms hydrogen bonds with thymine, and cytosine forms hydrogen bonds with guanine in DNA.

Topic: Chemistry, Biomolecules, NEET
Which pairs of experimental observations and phenomenon are correctly account for each other?

Options:
A

Experimental observation	Phenomenon

(A)	X -ray spectra	Charge on the nucleus

B

Experimental observation	Phenomenon

(B)	Î± - particle scattering	Quantized electron orbit

C

Experimental observation	Phenomenon

(C)	Emission spectra	The quantization of energy

D

Experimental observation	Phenomenon

(D)	The photoelectric effect	The nuclear atom

The correct answer is:

Experimental observation	Phenomenon

(C)	Emission spectra	The quantization of energy

Solution:
Emission spectra of different wavelength ( λ ) accounts for quantisation of energy. While X -ray spectra account for atomic number, α -particle scattering account for nuclear model of atom, The photoelectric effect is related to ejection of electron from metal surface.

Topic: Chemistry, Structure of Atom, NEET
Which parameter is an extensive thermodynamic property?

Options:
A E(cell)
B ΔrGo
C nF
D Eo(cell)

The correct answer is:
ΔrGo

Solution:
ΔrGo is an extensive thermodynamic property.

Topic: Chemistry, Electrochemistry, NEET
Which part of a coordination compound determines its color?

Options:
A Counter ions
B Coordination sphere
C Ligands
D Central atom/ion

The correct answer is:
Coordination sphere

Solution:
The coordination sphere of a coordination compound contains the central atom/ion and ligands attached to it, and it determines the color of the compound.

Topic: Chemistry, Coordination Compounds, NEET
Which part of Henle's loop is permeable to water?

Options:
A Descending limb
B Ascending limb
C Both descending and ascending limb
D Neither descending nor ascending limb

The correct answer is:
Descending limb

Solution:
The descending limb of Henle's loop is permeable to water but almost impermeable to electrolytes. This helps in concentrating the filtrate as it moves down. The ascending limb is impermeable to water but allows transport of electrolytes.

Topic: Biology, Excretory Products and their Elimination, NEET
Which part of human brain is concerned with the regulation of body temperature?

Options:
A Cerebellum
B Cerebrum
C Hypothalamus
D Medulla oblongata

The correct answer is:
Hypothalamus

Solution:
Hypothalamus lies at the base of the thalamus. The hypothalamus contains a number of centres which control body temperature, urge for eating and drinking. It also contains several groups of neurosecretory cells, which secrete hormones called hypothalamic hormones.

Topic: Biology, Neural Control and Coordination, NEET
Which part of human brain is concerned with the regulation of body temperature?

Options:
A Medulla oblongata
B Cerebellum
C Cerebrum
D Hypothalamus

The correct answer is:
Hypothalamus

Solution:
In human brain, hypothalamus is a centre for hunger, thirst, sweating, sleep, fatigue, temperature, anger, pleasure, love, hate and satisfaction.
Medulla oblongata contains centre for heart beat, respiration, digestion, $B P$, involuntary functions, urination, etc.
Cerebellum regulates posture and balance.
Cerebrum is the centre for intelligence, emotion, will power, memory, consciousness, imagination, etc.

Topic: Biology, Neural Control and Coordination, NEET, NEET 2009 (Screening)
Which part of our central neural system acts as a master clock?

Options:
A Cerebrum
B Cerebellum
C Medulla oblongata
D Hypothalamus

The correct answer is:
Hypothalamus

Solution:
The part of the central neural system that acts as a master clock is the hypothalamus

Topic: Biology, Neural Control and Coordination, NEET
Which part of the biosphere reserve is an area of active cooperation between reserve management and the local people, wherein activities like settlements, cropping, forestry and recreation and other economic uses continue in harmony with conservation goals?

Options:
A Core area
B Buffer area
C Transition area
D Anywhere in the biosphere reserve

The correct answer is:
Transition area

Solution:
India now has 14 biosphere reserves. Each biosphere reserve has 3 zones a Core zone: No human activity allowed b Buffer zone: Educational and research facilities c Transition zone: Tribal residence, e.g., Silent valley (Kerala), Similipal (Orissa).

Topic: Biology, Biodiversity and its Conservation, NEET
Which part of the body is the principal organ for absorption of nutrients?

Options:
A The mouth
B The stomach
C The small intestine
D The large intestine

The correct answer is:
The small intestine

Solution:
The small intestine is the principal organ for absorption of nutrients. The digestion is completed here and the final products of digestion such as glucose, fructose, fatty acids, glycerol and amino acids are absorbed through the mucosa into the bloodstream and lymph.

Topic: Biology, Digestion and Absorption, NEET
Which part of the brain is directly concerned with the control of heart?

Options:
A Cerebrum
B Diencephalon
C Pons verolii
D Medulla oblongata

The correct answer is:
Medulla oblongata

Solution:
Medulla oblongata controls involuntary functions of body through a number of centres like cardiac centres (heart beat).

Topic: Biology, Neural Control and Coordination, NEET
Which part of the brain is responsible for the sense of smell?

Options:
A Olfactory lobes
B Cerebral hemispheres
C Diencephalon
D Medulla oblongata

The correct answer is:
Olfactory lobes

Solution:
The olfactory lobes, located in the forebrain, are responsible for the sense of smell.

Topic: Biology, Structural Organisation in Animals, NEET
Which part of the buffer solution system involves the weak acid or base?

Options:
A The conjugate acid
B The anion component
C The common ion
D The buffer capacity

The correct answer is:
The common ion

Solution:
The paragraph doesn't use the term "common ion," but it refers to the weak acid or base in the buffer solution system, which plays a key role in stabilizing pH.

Topic: Chemistry, Ionic Equilibrium, NEET
Which part of the endocrine system is under direct neural regulation of the hypothalamus?

Options:
A Anterior pituitary
B Posterior pituitary
C Ovary
D None of the above

The correct answer is:
Posterior pituitary

Solution:
The posterior pituitary is under the direct neural regulation of the hypothalamus.

Topic: Biology, Chemical Coordination and Integration, NEET
Which part of the following diagram controls body temperature and urge for eating?

Options:
A A
B E
C G
D C

The correct answer is:
G

Solution:
Here G is hypothalamus which controls body temperature and urge for eating.

Topic: Biology, Neural Control and Coordination, NEET
Which part of the fruit, labelled in the given figure make it a false fruit

Options:
A B → Endocarp
B C → Thalamus
C D → Seed
D A → Mesocarp

The correct answer is:
C → Thalamus

Solution:
The fruit is a characteristic feature of the flowering plants. It is a mature or ripened ovary, developed after fertilisation. If a fruit is formed without fertilisation of the ovary, it is called a parthenocarpic fruit.

In few species of plants, the thalamus also contributes to fruit formation, such fruits are called false fruits. The fleshy thalamus is edible in these cases. Example is Apple.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2022 (Phase 1)
Which part of the gut shows the negligible amount of absorption of substances?

Options:
A mouth
B oesophagus
C stomach
D small intestine

The correct answer is:
oesophagus

Solution:
Absorption in the oesophagus is virtually nil.
Its role in digestion is simple: to convey boluses of food from the pharynx to the stomach.

Topic: Biology, Digestion and Absorption, NEET
Which part of the human body should one use to demonstrate stages in mitosis?

Options:
A Somatic Cells
B Gonads
C Germ Cells
D Both a and b

The correct answer is:
Somatic Cells

Solution:
Somatic cells are used to demonstrate stages in mitosis.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which part of the human brain is the most developed?

Options:
A Cerebral cortex
B Cerebrum
C Medulla oblongata
D Cerebellum

The correct answer is:
Cerebrum

Solution:
The Cerebrum is the most developed part of the human brain

Topic: Biology, Neural Control and Coordination, NEET
Which part of the nervous system is responsible for controlling automatic functions such as heart rate and digestion?

Options:
A Central nervous system
B Peripheral nervous system
C Autonomic nervous system
D Vertebral column

The correct answer is:
Autonomic nervous system

Solution:
The autonomic nervous system controls automatic functions such as heart rate and digestion. It is divided into the sympathetic and parasympathetic branches.

Topic: Biology, Structural Organisation in Animals, NEET
Which part of the ovule develops into the female gametophyte?

Options:
A Microsporangia
B Megasporangia
C Nucellus
D Megaspore mother cell

The correct answer is:
Megaspore mother cell

Solution:
The megaspore mother cell divides meiotically to form four megaspores, one of which enclosed within the megasporangium develops into a multicellular female gametophyte.

Topic: Biology, Plant Kingdom, NEET