datavorous/entrance-exam-dataset huggingface dataset:
Test-tube baby means a baby born when

Options:
A It is developed in a test tube
B It develops from a non-fertilized uterus
C It is developed through tissue culture method
D The ovum is fertilized externally and there after implanted in the uterus

The correct answer is:
The ovum is fertilized externally and there after implanted in the uterus

Solution:
By In-vitro fertilization, the ovum is fertilized with sperm outside the body of a woman, providing the ovum with the same environmental conditions as it would have got inside the uterus. The zygote is grown inside a culture and when the embryo is formed, it is then implanted into the uterus where it develops into a foetus and then into a child. This is called a test-tube baby.
The methodology involves the following steps:
- Removal of the unfertilized ovum from the reproductive tract of a female.
- Ovum is kept under aseptic conditions.
- The fusion of sperm and ovum in a culture medium, outside the female body to form the zygote.
- A zygote is stimulated to develop in vitro upto 32-celled stage.
- Developing an embryo is implanted on the endometrium of the uterus at a 32-celled stage. So the pregnancy in the woman starts and further the development of the child continues in the womb till it is born.

Topic: Biology, Reproductive Health, NEET
Tetany is characterised by which of the following?

Options:
A Lowered blood Ca2+
B Enhanced blood Na+
C Enhanced blood glucose
D Enhanced blood Ca2+

The correct answer is:
Lowered blood Ca2+

Solution:
Muscle tetany is the rapid spasms (wild contractions) in muscle due to low Ca++ in body fluid. It is influenced by reduced secretion of parathormone.

Topic: Biology, Locomotion and Movement, NEET
Tetradynamous conditions are present in the plants of which Family?

Options:
A Solanaceae
B Leguminosae
C Liliaceae
D Brassicaceae

The correct answer is:
Brassicaceae

Solution:
Tetradynamous means six stamens (2+4), in which filaments of two outer stamens are smaller, while four inner stamen filaments are longer. This condition is commonly seen in Brassica or the crucifer family.

Topic: Biology, Morphology of Flowering Plants, NEET
Tetragonal anther consists of

Options:
A One microsporangia
B Two microsporangia
C Three microsporangia
D Four microsporangia

The correct answer is:
Four microsporangia

Solution:
A typical angiosperms anther is bilobed with each lobe having two theca. The anther is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe, thus it is referred as tetrasporangiate structure.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Tetragonal crystal system has the following unit cell dimensions

Options:
A a=b=c and Î±=Î²=Î³=90Â°
B aâ bâ c andÂ Î±=Î²=Î³=90Â°
C a=bâ c and Î±=Î²=Î³=90Â°
D a=bâ c and Î±=Î²=90Â° and Î³=120Â°

The correct answer is:
a=bâ c and Î±=Î²=Î³=90Â°

Solution:
In crystallography, the tetragonal crystal system is one of the 7 crystal systems.
Tetragonal crystal lattices result from stretching a cubic lattice along one of its lattice vectors, so that the cube becomes a rectangular prism with a square base a and height c, which is different from a.

Topic: Chemistry, Solid State, NEET
Thalamus is

Options:
A Base of flower
B Base of ovary
C Modification of pollen
D Modification of petal

The correct answer is:
Base of flower

Solution:
The broadened base of flower which lies at the tip of pedicel is called torus or thalamus or receptacle.

Topic: Biology, Morphology of Flowering Plants, NEET
Thalamus takes part in fruit formation in

Options:
A guava
B orange
C strawberry
D mango

The correct answer is:
strawberry

Solution:
Fruit that is formed from the fertilized ovary that surrounds the seeds. Such fruits are called true fruit. When the fruit part develops from other parts of the flower than the ovary is called as false fruit.
True fruit is the fruit that is formed from the fertilized ovary of the flower and ovules get transformed into seeds. Strawberry develops from an aggregate of achenes and the edible part is thalamus. It is thus a false fruit.

Topic: Biology, Morphology of Flowering Plants, NEET
Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

Options:
A Both are due to a qualitative defect in globin chain synthesis
B Both are due to a quantitative defect in globin chain synthesis
C Thalassemia is due to less synthesis of globin molecules
D Sickle cell anemia is due to a quantitative problem of globin molecules

The correct answer is:
Thalassemia is due to less synthesis of globin molecules

Solution:
Thalassemia differs from sickle-cell anaemia in that the former is a quantitative problem of synthesizing too few globin molecules while the latter is a qualitative problem of synthesizing an incorrectly functioning globin.

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2017
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

Options:
A Both are due to a quantitative defect in globin chain synthesis
B Thalassemia is due to less synthesis of globin molecules
C Sickle cell anemia is due to a quantitative problem of globin molecules
D Both are due to a qualitative defect in globin chain synthesis

The correct answer is:
Thalassemia is due to less synthesis of globin molecules

Solution:
Thalassemia is an autosomal recessive blood disorder in which the hemoglobin is abnormal, causing anemia, due to non-synthesis or reduced rate of synthesis of one of the globin chains. In Thalassemia due to the defective gene, there is less synthesis of globin protein thus it is a quantitative blood disorder. Thalassemia can be due to less synthesis of alpha or beta globin protein of hemoglobin. In sickle cell anemia, the globin protein synthesis is defective thus it is a qualitative blood disorder. Sickle cell anemia is only due to the defective beta chain of the globin molecule.

Topic: Biology, Principles of Inheritance and Variation, NEET
Thalassemia can be classified according to which chain of the haemoglobin molecule is affected. Which of the following is not a type of Thalassemia?

Options:
A α Thalassemia
B β Thalassemia
C δ Thalassemia
D γ Thalassemia

The correct answer is:
δ Thalassemia

Solution:
Thalassemia can be classified according to which chain of the haemoglobin molecule is affecteD) α Thalassemia and β Thalassemia are two common types of Thalassemia. δ Thalassemia and γ Thalassemia are not types of Thalassemia.

Topic: Biology, Principles of Inheritance and Variation, NEET
Thalassemia is a ___________ linked recessive blood disease.

Options:
A sex
B autosome
C dominant
D incomplete dominance

The correct answer is:
autosome

Solution:
Thalassemia is an autosomal recessive blood disease, which means that both parents must be carriers of the defective gene in order to transmit it to their offspring.

Topic: Biology, Principles of Inheritance and Variation, NEET
Thalassemia is different from sickle:cell anaemia in that the former is a ___________ problem of synthesising too few globin molecules while the latter is a ___________ problem of synthesising an incorrectly functioning globin.

Options:
A qualitative, quantitative
B quantitative, qualitative
C recessive, dominant
D dominant, recessive

The correct answer is:
quantitative, qualitative

Solution:
Thalassemia is a quantitative problem of synthesising too few globin molecules, while sickle:cell anaemia is a qualitative problem of synthesising an incorrectly functioning globin.

Topic: Biology, Principles of Inheritance and Variation, NEET
The +1 oxidation state in group 13 and +2 oxidation state in group 14 becomes more and more stable with increasing atomic number. Explain.

Options:
A Increasing effective nuclear charge stabilizes lower oxidation states
B Increasing atomic size destabilizes lower oxidation states
C Electron affinity decreases with increasing atomic number
D Ionization energy increases with increasing atomic number

The correct answer is:
Increasing effective nuclear charge stabilizes lower oxidation states

Solution:
Correct Option is : (A)
Increasing effective nuclear charge stabilizes lower oxidation states

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
The $4^{\text {th }}$ overtone of a closed organ pipe is same as that of $3^{\text {rd }}$ overtone of an open pipe. The ratio of the length of the closed pipe to the length of the open pipe is:

Options:
A $9: 8$
B $7: 9$
C $8: 9$
D $9: 7$

The correct answer is:
$9: 8$

Solution:
$4^{\text {th }}$ overtone for closed organ pipe $\rightarrow 9^{\text {th }}$ harmonic $3^{\text {rd }}$ overtone for open organ pipe $\rightarrow 4^{\text {th }}$ harmonic
$\begin{aligned} & 9\left(\frac{V}{4 I_c}\right)=4\left(\frac{V}{2 I_o}\right) \\ & \frac{I_c}{I_o}=\frac{9}{8}\end{aligned}$

Topic: Physics, Waves and Sound, NEET, NEET 2023 (Manipur)
The 5-C compound formed during TCA cycle is :

Options:
A $\alpha$-ketoglutaric acid
B Oxalo succinic acid
C Succinic acid
D Fumaric acid

The correct answer is:
$\alpha$-ketoglutaric acid

Solution:
During TCA cycle, after first decarboxylation of oxalosuccinic acid, $\alpha$-Ketoglutaric acid 5-C compound ( $\alpha$-KGA) is formed.
$\alpha$-KGA undergoes further decarboxylation to form a 4 carbon compound i.e., succinyl-CO-A.

Topic: Biology, Respiration in Plants, NEET, NEET 2022 (Phase 2)
The 5th thoracic vertebra is

Options:
A the region of the spinal column inferior to the sacral vertebrae
B the region of the spinal column superior to the cervical vertebrae of the neck
C at the same level as the sternal angle
D inferior to the lumbar vertebrae of the lower back

The correct answer is:
at the same level as the sternal angle

Solution:
The trachea is a straight tube also called the windpipe, which extended up to the mid-thoracic cavity. It divides at the level of 5th thoracic vertebrae into right and left bronchi or primary bronchi as it is at the same level as the sternal angle. The 5th thoracic vertebrae in the region of the spinal column inferior to the cervical vertebrae of the neck.

Topic: Biology, Locomotion and Movement, NEET
The 6 V Zener diode shown in the figure has negligible resistance and a knee current of 5 mA. The minimum value of R in Î© so that the voltage across it does not fall below 6 V is

Options:
A 40
B 60
C 80
D 120

The correct answer is:
80

Solution:
In Zener diode,
⇒ Vmax-VZR1≥Iknee+IR

R1 is the series resistance of 50 Ω and IR is the current through the resistance R
⇒ 10-650≥5m+IR
⇒ IR≤80 mA-5 mA
∵IRmax=75 mA (the maximum current through R)

So the minimum value of the resistance R is
Rmin=VIRmax=6 V75 mA=600075=80 Ω

Topic: Physics, Semiconductors, NEET
The 8th, 9th and 10th ribs are known as false ribs because their external portions are attached to

Options:
A Xiphisternum
B Costal cartilage of 7th rib
C They have no costal cartilage
D They are not true ribs

The correct answer is:
Costal cartilage of 7th rib

Solution:
Ribs 8th, 9th, and 10th are attached indirectly to the sternum. For these ribs, the costal cartilage of each attaches to the cartilage of the next higher rib. Hence, the eighth, ninth, and tenth pairs are called false ribs.

Topic: Biology, Locomotion and Movement, NEET
The 1-3 coiled structures present within the testicular lobules are

Options:
A responsible for the transportation of gametes.
B responsible for the formation of androgens.
C the site where sperms are produced.
D the site where defective sperms are destroyed.

The correct answer is:
the site where sperms are produced.

Solution:
The 1-3 coiled structures present within the testicular lobules are known as seminiferous tubules. The process of formation of sperms i.e. spermatogenesis occurs here. These tubules are lined by two types of cells: male germ cells, i.e., spermatogonia, which develop into sperms and sertoli cells which provide nutrition to the sperms.

Topic: Biology, Human Reproduction, NEET
The

A

leaves the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eyeball.

B

is not present in that region and hence it is called the

C

. At the posterior pole of the eye lateral to the

C

, there is a yellowish pigmented spot called

D

with a central pit called the

E

.

Options:
A

A	B	C	D	E

Optic nerves	Photoreceptor cells	fovea	macula lutea	blind spot

B

A	B	C	D	E

Optic nerves	Photoreceptor cells	macula lutea	blind spot	fovea

C

A	B	C	D	E

Optic nerves	Photoreceptor cells	blind spot	macula lutea	fovea

D

A	B	C	D	E

Optic nerves	Photoreceptor cells	blind spot	fovea	macula lutea

The correct answer is:

A	B	C	D	E

Optic nerves	Photoreceptor cells	blind spot	macula lutea	fovea

Solution:
The optic nerves leave the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eyeball. Photoreceptor cells are not present in that region and hence it is called the blind spot. At the posterior pole of the eye lateral to the blind spot, there is a yellowish pigmented spot called macula lutea with a central pit called the fovea. The fovea is a thinned-out portion of the retina where only the cones are densely packed. It is the point where the resolution is the greatest.

Topic: Biology, Neural Control and Coordination, NEET
The (a) provides the template, (b) brings amino acids and reads the genetic code, and (c) play structural and catalytic role during translation.

Options:
A (a) DNA, (b) tRNA, (c) rRNA
B (a) mRNA, (b) sRNA, (c) tRNA
C (a) mRNA, (b) tRNA, (c) rRNA
D (a) hnRNA, (b) tRNA, (c) mRNA

The correct answer is:
(a) mRNA, (b) tRNA, (c) rRNA

Solution:
In transcription ,the template strand is what is used as a template in the synthesis of mRNA. In translation, a mature mRNA strand is translated in the 5'→3' direction by a ribosome to produce a polypeptide chain. Reading frames in the 3'→5' direction on the mRNA strand may be disregarded during translation.
The linkage of an amino acid to a tRNA is crucial for two reasons. First, the attachment of a given amino acid to a particular tRNA establishes the genetic code. When an amino acid has been linked to a tRNA, it will be incorporated into a growing polypeptide chain at a position dictated by the anticodon of the tRNA. Second, the formation of a peptide bond between free amino acids is not thermodynamically favorable. The amino acid must first be activated for protein synthesis to proceed.
A ribosome is a complex macromolecule composed of structural and catalytic rRNAs, and many distinct polypeptides. In eukaryotes, the synthesis and assembly of rRNAs occurs in the nucleolus.

Topic: Biology, Molecular Basis of Inheritance, NEET
The ability of a cell, tissue or organism to grow for a certain period is called ___.

Options:
A Redifferentiation
B determinate growth
C meristem
D growth rate

The correct answer is:
determinate growth

Solution:
The ability of a cell, tissue or organism to grow for a certain period is called determinate Growth.

Topic: Biology, Plant - Growth and Development, NEET
The ability of a plant to follow a different pathway and produce different structures in response to the environment is known as

Options:
A photoperiodism
B vernalization
C photosynthesis
D plasticity

The correct answer is:
plasticity

Solution:
Plasticity is the ability of a plant to show variation according to environment and development.

Topic: Biology, Plant - Growth and Development, NEET
The ability of an ion to bring about coagulation of a given colloid depends upon

Options:
A its size
B the magnitude of its charge only
C the sign of its charge
D both the magnitude and the sign of its charge

The correct answer is:
both the magnitude and the sign of its charge

Solution:
The ability of an ion to bring about coagulation of a given colloid depend upon both the magnitude and sign of its charge.

Topic: Chemistry, Surface Chemistry, NEET
The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called :

Options:
A Redifferentiation
B Development
C Plasticity
D Differentiation

The correct answer is:
Plasticity

Solution:
Phenotypic plasticity is the process through which plant follow different pathways in response to different environmental conditions. For example Heterophylly in Cotton, Coriander and Larkspur.

Topic: Biology, Plant - Growth and Development, NEET, NEET 2022 (Phase 2)
The ability of the Venus fly trap to capture insects is due to:

Options:
A specialized "muscle-like" cells
B chemical stimulation by the prey
C a passive process requiring no special ability on the part of the plant
D rapid turgor pressure changes.

The correct answer is:
rapid turgor pressure changes.

Solution:
When a fly sits on the leaf of venus fly trap, there are touch-sensitive hairs that trigger an electrical potential. This potential cause several changes which result in the movement of ions inside the cells of the leaf. Inflow of water in the cells follows which results in their becoming turgid. This causes the shutting of the trap.
Related Theory
The Venus fly trap is a carnivorous flowering plant. The trap is made of two hinged lobes at the end of each leaf. On the inner surfaces of the lobes are hair-like projections called trichomes that cause the lobes to snap shut when prey comes in contact with them (thigmonastic movement).

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2005
The Abingdon tortoise became extinct on Galapagos island within a decade of the introduction of goats. This is an example of

Options:
A Resource Partitioning
B Competitive release
C Competitive inclusion
D Interference competition

The correct answer is:
Interference competition

Solution:
The Abingdon tortoise in Galapagos islands became extinct within a decade only after goats were introduced on the island. It is an example of competitive exclusion. It happened due to the lesser browsing efficiency of the tortoise.

Topic: Biology, Organisms and Populations, NEET
The abnormal condition when the vestigial mammary glands of man become female like is called:

Options:
A Feminization
B Gynochorism
C Gynosism
D Gynaecomastia

The correct answer is:
Gynaecomastia

Solution:
Gynaecomastia is the development of enlarged breast in the males. The term comes from the Greek gyne meaning "woman" and mastos meaning "breast". It is due to excessive secretion of female sex hormones (estrogens) in males. Decreased level of testosterone may also lead to gynaecomastia.

Topic: Biology, Principles of Inheritance and Variation, NEET
The abnormal frequency of bowel movement and increased liquidity of the faecal discharge is known as:

Options:
A Diarrhoea
B Constipation
C Indigestion
D Vomiting

The correct answer is:
Diarrhoea

Solution:
The abnormal frequency of bowel movement and increased liquidity of the faecal discharge is known as diarrhoea. In constipation, the faeces are retained within the colon as the bowel movements occur irregularly.

Topic: Biology, Digestion and Absorption, NEET
The above change can be effected by
I. KMnO4/H+
II. [Ag(NH3)2]OH
III. Br2/H2O

Options:
A II, III
B I, II, III
C I, II
D only II

The correct answer is:
only II

Solution:
Only Tollen's reagent can bring about the oxidation of -CHO→-COOH without affecting the C=C bond.

Topic: Chemistry, Aldehydes and Ketones, NEET
The above figure shows the circuit symbol of a transistor. Select the correct statements given below:
(A) The transistor has two segments of p-type semiconductor separated by a segment of $n$-type semiconductor.
(B) The emitter is of moderate size and heavily doped.
(C) The central segment is thin and lightly doped.
(D) The emitter base junction is reverse biased in common emitter amplifier circuit.

Options:
A (A) and (B)
B (B) and (C)
C (C) and (D)
D (A) and (D)

The correct answer is:
(B) and (C)

Solution:
The given transistor represents a $n-p-n$ transistor so statement $(A)$ is eliminated.
Emitter is of moderate size and heavily doped and central segment is thin and lightly doped.
So, statements (B) and (C) are correct.
Emitter base junction is forward biased.

Topic: Physics, Semiconductors, NEET, NEET 2023 (Manipur)
The above graphs between P V/s T are called as

Options:
A Isotherms
B Isobars
C Isochore
D Cannot say

The correct answer is:
Isochore

Solution:
Correct Option is : 3
Isochore

Topic: Chemistry, States of Matter, NEET
The above graphs between P V/s V are called as

Options:
A Isotherms
B Isobars
C Isochore
D Cannot say

The correct answer is:
Isotherms

Solution:
Correct Option is : 1
Isotherms

Topic: Chemistry, States of Matter, NEET
The above graphs between V V/s T are called as

Options:
A Isotherms
B Isobars
C Isochore
D Cannot say

The correct answer is:
Isobars

Solution:
Correct Option is : 2
Isobars

Topic: Chemistry, States of Matter, NEET
The above plot shows the variation of binding energy per nucleon Eb, against the nuclear mass M. The different points shown A, B, C, D and E corresponds to different nuclei. In which of the following reactions, the energy released will be positive?

Options:
A A + B → C + â
B C → A + B + â
C D + E â F + â
D F → D + E + â ,

The correct answer is:
F → D + E + â ,

Solution:
If binding energy of product nuclei is greater then energy is released.

Topic: Physics, Nuclear Physics, NEET
The absolute configuration of

is:

Options:
A 2S,Â 3S
B 2R,Â 3R
C 2R,Â 3S
D 2S, 3R

The correct answer is:
2S, 3R

Solution:
at 2 Carbon

According to CIP at second carbon priority vise the rotation is clockwise (R) but the lower priority at horizontal line so configuration is changed so becomes and anti-clockwise (S)
at 3 Carbon

According to CIP at third carbon priority vise the rotation is Anti-clockwise (S) but the lower priority at horizontal line so configuration is changed so becomes and clockwise (R)
â´ Configuration is 2S, 3R.

Topic: Chemistry, General Organic Chemistry, NEET
The absolute configuration of the compound is

Options:
A R
B S
C E
D Z

The correct answer is:
R

Solution:
Lowest priority atom is always away from the viewer. Priority is seen on the basis of atomic number and if atomic number are same then on the basis of atomic mass. See in the order higher to lower priority.
If clockwise then it is R
If anticlockwise then it is S
Full name of the molecule is
(R) 1-bromo-1-chloroethane.

Topic: Chemistry, General Organic Chemistry, NEET
The absolute configuration of the following compound is :

Options:
A 2S,Â 3R
B 2S, 3S
C 2R,Â 3S
D 2R,Â 3R

The correct answer is:
2S, 3S

Solution:
At C2:âââââââ At C3:
Since least priority group is on horizontal position hence, R becomes S.
2-Sââââââââââ3-S

Topic: Chemistry, General Organic Chemistry, NEET
The absolute enthalpy of neutralisation of the reaction: : $\mathrm{MgO}_{(s)}+2 \mathrm{HCl}_{(a q)}$ $\rightarrow \mathrm{MgCl}_{2(a q)}+\mathrm{H}_2 \mathrm{O}_{(\cap}$ will be:

Options:
A $-57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$
B greater than $-57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$
C less than $-57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$
D $57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$

The correct answer is:
less than $-57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$

Solution:
$\mathrm{MgO}$ is salt of weak base. Thus, enthalpy of neutralisation for $\mathrm{MgO}$ will be less than $-57.33 \mathrm{~kJ} \mathrm{~mol}^{-1}$.
Related Theory
The enthalpy of neutralization of any strong acid with a strong base is always the same, i.e., $57.1 \mathrm{~kJ}$. This is because the strong acids, strong bases and the salts they form, are all completely ionized in dilute aqueous solution.

Topic: Chemistry, Thermodynamics (C), NEET, NEET 2005