datavorous/entrance-exam-dataset huggingface dataset:
Lipids have a molecular mass of:

Options:
A Less than 800 daltons
B 800-2000 daltons
C 2000-5000 daltons
D greater than 10,000 daltons

The correct answer is:
Less than 800 daltons

Solution:
Lipids have a molecular mass of fewer than 800 daltons. They are also known as fats. The basic unit of lipids is fatty acids. There are various types of lipids like glycolipids, phospholipids, etc. Lipids are not strictly macromolecules.

Topic: Chemistry, Biomolecules, NEET
Lippe's loop is a type of contraceptive used as:

Options:
A Vault barrier
B Non-Medicated IUD
C Copper releasing IUD
D Cervical barrier

The correct answer is:
Non-Medicated IUD

Solution:
Lippe’s loop is an example of a non-medicated intra-uterine device or IUD used in female contraception.

Lippes loop is a plastic double “s” loop. It attracts the macrophages stimulating them to accumulate in the uterine cavity. Macrophages increase phagocytosis of sperms within the uterus and act as a contraceptive.

Topic: Biology, Reproductive Health, NEET, NEET 2022 (Phase 1)
Lippes loop is an example of

Options:
A Vaults
B Cu releasing IUDs
C Non-medicated IUDs
D Hormonal IUDs

The correct answer is:
Non-medicated IUDs

Solution:
Intra-Uterine devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone-releasing IUDs (Progestasert, LNG-20).

Topic: Biology, Reproductive Health, NEET
Liquation is used when

Options:
A Metal and impurity have low melting point
B Metal and impurity have high melting point
C Metal have high melting point and impurity has low melting point.
D Metal has low melting point and impurity has high melting point.

The correct answer is:
Metal has low melting point and impurity has high melting point.

Solution:
Liquation is a method of purification of metal, it is used when metal has low melting point and impurity has high melting point.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by

Options:
A oxidation
B cracking
C distillation under reduced pressure
D hydrolysis

The correct answer is:
cracking

Solution:
Key Idea:- Lower hydrocarbons exist in gaseous state while higher ones are in liquid state or solid state.
On cracking or pyrolysis, the hydrocarbon with higher molecular mass gives a mixture of hydrocarbons having lower molecular mass. Hence, we can say that by cracking a liq̧uid hydrocarbon can be converted into a mixture of gaseous hydrocarbons.

Topic: Chemistry, Hydrocarbons, NEET, NEET 2010 (Screening)
Liquid oxygen at $50 \mathrm{~K}$ is heated to $300 \mathrm{~K}$ at constant pressure of 1 atm. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?

Options:
A

B

C

D

The correct answer is:

Solution:
Graph (a) shows the variation of temperature with time. At first temperature will increase then there will be state change from liquid to gas.

Topic: Physics, Thermal Properties of Matter, NEET, NEET 2012 (Screening)
Liquids A and B are at 30 °C and 20 °C, respectively. When mixed in equal masses, the temperature of the mixture is found to be 26 °C, The specific heats of A and B are in the ratio of m:n , then minimum value of m+n= ?

Options:
A 5
B 2
C 6
D 7

The correct answer is:
5

Solution:
At thermal equilibrium
heat rejected by one liquid = heat accepted by other liquid
msA30â26=msB26â20
â4sA=6sB
â´ sAsB=64=32 = m n âm+n=3+2=5

Topic: Physics, Thermal Properties of Matter, NEET
Liquids A and B are at 30 Â°C and 20 Â°C respectively. When mixed in equal masses, the temperature of the mixture is found to be 26 Â°C. Their specific heats are in the ratio of

Options:
A 3:2
B 1:1
C 2:3
D 4:3

The correct answer is:
3:2

Solution:
According to principle of calorimetry,

Heat given = Heat taken

⇒msA30-t=msBt-20
⇒sAsB=64=32

Topic: Physics, Thermal Properties of Matter, NEET
List some of the plants are given below. How many plant/s is/are vascular and monoecious?

Chara, Pinus, Cycas, Sphagnum, Maize, Papaya

Options:
A One
B Two
C Four
D Three

The correct answer is:
Two

Solution:
Gymnosperms and angiosperms are vascular plants as they posses vascular tissue xylem and phloem. Plant having both male and female flower are called as monoecious. Pinus and Maize are monoecious and vascular.

Topic: Biology, Plant Kingdom, NEET
List the gases which are responsible for the greenhouse effect.

Options:
A Nitrogen, Oxygen, Argon
B Carbon dioxide, Methane, Water vapor
C Hydrogen, Helium, Neon
D Sulfur dioxide, Nitrous oxide, Carbon monoxide

The correct answer is:
Carbon dioxide, Methane, Water vapor

Solution:
Correct Option is : (B)
Carbon dioxide, Methane, Water vapor

Topic: Chemistry, Environmental Chemistry, NEET
List the hydrogen halide acids in decreasing order of reactivity in the following reaction
R-OH+HX→RX+H2O

Options:
A HI > HBr > HCl > HF
B HBr > HI > HCl > HF
C HI > HCl > HBr > HF
D HI > HF > HBr > HI

The correct answer is:
HI > HBr > HCl > HF

Solution:
The relative rate follows same order as of acidity (HI > HBr > HCl > HF) and the nucliophilicity of their conjugate anion, X-(I->Br->Cl->F-) .

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
List the important sources of sulfur.

Options:
A Sulfide minerals
B Sulfuric acid
C Elemental sulfur
D All of the above

The correct answer is:
All of the above

Solution:
Correct Option is : (D)
All of the above

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
List the quantum numbers (mland l) of electrons for 3d orbital.

Options:
A l = 3 ; ml= –3,–2, –1, 0, +1, +2, +3 (any one value)
B l = 0 ; ml= 0 (any one value)
C l = 1 ; ml= –1, 0, +1(any one value)
D l = 2 ; ml= –2, –1, 0, +1, +2 (any one value)

The correct answer is:
l = 2 ; ml= –2, –1, 0, +1, +2 (any one value)

Solution:
Correct Option is : (D)
l = 2 ; ml= –2, –1, 0, +1, +2 (any one value)

Topic: Chemistry, Structure of Atom, NEET
List the set of factors from the following, which are responsible for dissociation of oxygen from the oxyhaemoglobin?

Options:
A High pCO2, low pO2, low pH
B High temperature, low pO2, less H+ conc.
C Low pO2, high pCO2, high pH
D High pO2, low pCO2, high temperature

The correct answer is:
High pCO2, low pO2, low pH

Solution:
At the level of tissues, low pO2, high pCO2, high H+ concentration or low pH and high temperature are all favourable conditions for shifting the oxygen-haemoglobin dissociation curve towards right side by decreasing oxygen affinity and therefore causes dissociation of oxygen from the oxyhaemoglobin.

Topic: Biology, Breathing and Exchange of Gases, NEET
List the uses of neon and argon gases.

Options:
A i) Neon Neon signs, Argon Cryogenic applications ii) Neon Cryogenic applications, Argon Neon signs iii) Neon Lasers, Argon Welding iv) Neon Welding, Argon Lasers
B i) Neon Cryogenic applications, Argon Neon signs ii) Neon Neon signs, Argon Cryogenic applications iii) Neon Lasers, Argon Welding iv) Neon Welding, Argon Lasers
C i) Neon Neon signs, Argon Welding ii) Neon Cryogenic applications, Argon Lasers iii) Neon Lasers, Argon Cryogenic applications iv) Neon Welding, Argon Neon signs
D i) Neon Lasers, Argon Neon signs ii) Neon Welding, Argon Lasers iii) Neon Cryogenic applications, Argon Welding iv) Neon Neon signs, Argon Cryogenic applications.

The correct answer is:
i) Neon Neon signs, Argon Cryogenic applications ii) Neon Cryogenic applications, Argon Neon signs iii) Neon Lasers, Argon Welding iv) Neon Welding, Argon Lasers

Solution:
Correct Option is : (A)
i) Neon Neon signs, Argon Cryogenic applications ii) Neon Cryogenic applications, Argon Neon signs iii) Neon Lasers, Argon Welding iv) Neon Welding, Argon Lasers

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Listed below are four respiratory capacities (i-iv) and four jumbled respiratory volumes of a normal human adult:

Respiratory capacities	Respiratory volumes

(i)	Residual volume	(a)	2500 mL

(ii)	Vital capacity	(b)	3500 mL

(iii)	Inspiratory reserve volume	(c)	1200 mL

(iv)	Inspiratory capacity	(d)	4500 mL

Which one of the following pairs of capacities and volumes is matched correctly with each other?

Options:
A

(ii) - (a), (iii) - (d)

B

(iii) - (c), (iv) - (a)

C

(iv) - (b), (i) - (c)

D

(i) - (d), (ii) - (b)

The correct answer is:

(iv) - (b), (i) - (c)

Solution:
The correct matching of respiratory capacities with their respiratory volumes are :

Respiratory Capacities	Respiratory Volumes

i. Residual volume	c. 1200 mL

ii. Vital capacity	d. 4500 mL

iii. Inspiratory reserve volume	a. 2500 mL

iv. Inspiratory capacity	b. 3500 mL

Topic: Biology, Breathing and Exchange of Gases, NEET
Lithium has a bcc structure. Its density is 530 kg m-3 and its atomic mass is 6.94 g mol-1 . Calculated the edge length of a unit cell of Lithium metal. NA=6.02×1023 mol-1

Options:
A 154 pm
B 352 pm
C 527 pm
D 264 pm

The correct answer is:
352 pm

Solution:
d=Z MNA a3
a3=6.94×26.022×1023×530×10-3=6.94×200×10-245.30×6.022
=3.52×10-8 cm
=352 pm

Topic: Chemistry, Solid State, NEET, NEET 2016 (Phase 1)
Lithium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is $351 \mathrm{pm}$, the atomic radius of the lithium will be

Options:
A $240.8 \mathrm{pm}$
B $151.98 \mathrm{pm}$
C $75.5 \mathrm{pm}$
D $300.5 \mathrm{pm}$

The correct answer is:
$151.98 \mathrm{pm}$

Solution:
In case of body centred cubic (bcc) crystal, $\mathrm{a} \sqrt{3}=4 \mathrm{r}$
Hence, atomic radius of lithium, $\mathrm{r}=\frac{\mathrm{a} \sqrt{3}}{4}$
$\begin{aligned}
& =\frac{351 \times 1.732}{4} \\
& =151.98 \mathrm{pm}
\end{aligned}$

Topic: Chemistry, Solid State, NEET, NEET 2009 (Screening)
Liver is the largest gland and is associated with various functions, choose one which is not correct?

Options:
A Formation of urea
B Digestion of fat
C Formation of bile
D Secretion of a hormone called enterogastrone

The correct answer is:
Secretion of a hormone called enterogastrone

Solution:
The liver is the largest gland in the human body. It performs a variety of functions like it stores excess glucose in the form of glycogen and thus helps in the metabolism of carbohydrates. It helps in the digestion and emulsification of fats. It produces the digestive juice bile, which helps in digestion of fats and gives the characteristic color to stool and urine. Gastrin is not secreted by the liver. It is a gastrointestinal hormone secreted by the parietal cells of the stomach.

Topic: Biology, Digestion and Absorption, NEET
Liver stores

Options:
A Vitamin A
B Vitamin D
C Vitamin E
D All of the above

The correct answer is:
All of the above

Solution:
The liver a very important gland and an organ stores vitamin A, D, E, K and B12. The fat-soluble vitamins get dissolved in the bile secreted during digestion is essential for absorbing them so that the body can use them.

Topic: Biology, Digestion and Absorption, NEET
Living mechanical tissue is

Options:
A collenchyma
B parenchyma
C sclerenchyma
D complex tissue

The correct answer is:
collenchyma

Solution:
The collenchyma occurs in layers below the epidermis in dicotyledonous plants. Deposition of cellulose, hemicellulose, pectin. It provide tensile strength.

Topic: Biology, Anatomy of Flowering Plants, NEET
LNG-20 is a hormone-releasing IUD. It is called LNG-20 because

Options:
A it releases levonorgestrel, a synthetic estrogen.
B it releases levoprogestrol, a synthetic estrogen
C it releases levonorgestrel, a synthetic progesterone.
D it releases levoprogestrol, a synthetic progesterone

The correct answer is:
it releases levonorgestrel, a synthetic progesterone.

Solution:
LNG-20 is a hormone releasing IUD which releases a synthetic progesterone called levonorgestrel at the rate of 20 micrograms per day. It is effective for 4 to 7 years.

Topic: Biology, Reproductive Health, NEET
Loading of phloem is related to

Options:
A Increase in the phloem sugar content
B Elongation of phloem cell
C Separation of phloem parenchyma
D Strengthening of phloem fibre

The correct answer is:
Increase in the phloem sugar content

Solution:
Phloem is involved in the transport of organic food. According to the mass flow hypothesis, organic substances flow in solution form in sieve elements due to the development of an osmotically generated pressure gradient. As glucose is prepared at the source (by photosynthesis), it is converted to sucrose (a disaccharide). The sugar is then moved in the form of sucrose into the companion cells and then into the living phloem sieve tube cells by active transport. This process of loading at the source produces a hypertonic condition in the phloem.

Topic: Biology, Transport in Plants, NEET
Locomotion requires a perfect coordinated activity of muscular and what other systems?

Options:
A Endocrine and Skeletal
B Neural and Endocrine
C Skeletal and neural
D None of these

The correct answer is:
Skeletal and neural

Solution:
Locomotion requires a perfect coordinated activity of Muscular, Skeletal and neural systems.

Topic: Biology, Locomotion and Movement, NEET
Long day plants produce flowers when they exposed to

Options:
A any random duration of light.
B light period longer than a critical day length.
C light period longer than 12 hrs.
D light period shorter than a critical day length.

The correct answer is:
light period longer than a critical day length.

Solution:
Plants which requires light period longer than the critical duration to flower are called as long day plant. They require longer light period and shorter dark period to promote flowering.

Topic: Biology, Plant - Growth and Development, NEET
Long day plants show flowering when

Options:
A the light period is greater than their critical photoperiod.
B the light period is lesser than the critical photoperiod.
C the day length is longer than 15 hours but interrupted by short dark period.
D the day length is shorter than a critical period.

The correct answer is:
the light period is greater than their critical photoperiod.

Solution:
Long day plants require a light period greater than the critical length to flower. Leaves perceive the photoperiod and causes production of a hypothetical flowering hormone which promotes flowering.

Topic: Biology, Plant - Growth and Development, NEET
Long-distance transport of water, minerals, and food is generally carried out by

Options:
A diffusion only
B active transport only
C mass flow system
D cytoplasmic streaming supplemented by active transport

The correct answer is:
mass flow system

Solution:
Transport over long distances proceeds through the vascular system, the xylem, and the phloem, and is called translocation. Long-distance transport of substances within a plant cannot be by diffusion alone as diffusion is slow process. Active transport involves a high amount of energy. Water, minerals, and food are generally moved by a mass or bulk flow.

Topic: Biology, Transport in Plants, NEET
Longitudinal section of human kidney is shown. Select the incorrect match

Options:
A P - Renal capsule
B S - It collects the urine from the renal pelvis.
C Q - Loop of Henle is found in this region
D R - It collects deoxygenated blood from the nephrons

The correct answer is:
R - It collects deoxygenated blood from the nephrons

Solution:
P - Renal capsule, Q - Medullary pyramid, R - Renal artery, S - Ureter
Renal artery provides oxygenated blood to the nephrons.

Topic: Biology, Excretory Products and their Elimination, NEET
Look at the following diagram showing facilitated diffusion across the membrane. Identify its type.

Options:
A Symport
B Uniport
C Antiport
D Multiport

The correct answer is:
Antiport

Solution:
The two molecules A and B move in the opposite direction in the given figure; hence, the diffusion is antiport.

Topic: Biology, Transport in Plants, NEET
Loss of biodiversity reduces:

Gene pool of a species.

Number of interactions in the biota.

Ability of species to adapt themselves to changes in the environment.

Non-evolutionary advancements.

The surviving and newly evolving species to dangers of extinction.

Options:
A

1	2	3	4	5

True	True	True	False	False

B

1	2	3	4	5

True	False	True	True	False

C

1	2	3	4	5

True	True	False	False	False

D

1	2	3	4	5

True	True	False	False	True

The correct answer is:

1	2	3	4	5

True	True	True	False	False

Solution:
Loss of biodiversity reduces gene pool of species, number of interactions in the biota and ability of species to adapt themselves to changes in the environment. It not only checks evolutionary advancements but also put the surviving species to dangers of extinction.

Topic: Biology, Biodiversity and its Conservation, NEET
Loss of chlorophyll leading to yellowing of leaves is called?

Options:
A Necrosis
B Chlorosis
C Death of Tissue
D Wilting

The correct answer is:
Chlorosis

Solution:
Chlorosis is the loss of chlorophyll leading to yellowing in leaves.

Topic: Biology, Mineral Nutrition, NEET
"Loss of rivets on the wings" signifies _____ in ecosystem according to "rivet popper" hypothesis.

Options:
A causing any species to become extinct
B proper functioning of ecosystem
C extinction of key species that drives major ecosystem
D weak species

The correct answer is:
extinction of key species that drives major ecosystem

Solution:
Paul Enrlich gave the Rivet Popper hypothesis to explain the significance of the key species in functioning of an ecosystem. The hypothesis uses an airplane as an analogue to the ecosystem and the rivets of the airplane as species that join parts airplane together. Passengers are the human counter-part in anthropogenic activities. As per the hypothesis, if the passengers start removing the rivets, initially it will not have any impact of the flight capability of the plane but later, the plane will lose it flying capability. If the rivets of the wings are removed it directly affect the functioning of the plane. In the same analogy, if the key species are exploited and they get extinct, it will not harm the ecosystem initially but, eventually it will lead to collapse of the ecosystem. The Rivet Popper hypothesis compares the rivets of the wings to the key species that helps in stabilising the ecosystem.

Topic: Biology, Biodiversity and its Conservation, NEET
Loss of water in the form of liquid droplets around special openings of veins near the tip of grass blades is called

Options:
A Exudation
B Guttation
C Transpiration
D Imbibition

The correct answer is:
Guttation

Solution:
Effect of root pressure is also observable at night and early morning when evaporation is low, and excess water collects in the form of droplets around special openings of veins near the tip of grass blades and leaves of many herbaceous parts. Such water loss in its liquid phase from hydathodes is known as guttation. It occurs when the rate of absorption is more and the rate of transpiration is less.

Topic: Biology, Transport in Plants, NEET
Loss of water in the form of liquid droplets near the tip of grass blades is called

Options:
A Transpiration
B Cohesion
C Guttation
D Evaporation

The correct answer is:
Guttation

Solution:
Loss of water in the form of liquid droplets from leaf tips is known as guttation it occurs due to root pressure and is observed during early morning in winter season when rate of absorption is more and rate of transpiration is less.

Topic: Biology, Transport in Plants, NEET
Loss or gain of a segment of DNA results in

Options:
A frame-shift mutation
B point mutation
C polyploidy
D chromosomal aberration

The correct answer is:
chromosomal aberration

Solution:
Chromosomal aberration or chromosomal abnormalities occurs when there is a defect in the number of chromosomes in a cell of an organism or in the arrangement of genetic material (genes) on the chromosome, the top four types of chromosomal aberrations. The types are 1. Deficiency or deletion 2. Duplication 3. Translocation 4. Inversion.

Topic: Biology, Principles of Inheritance and Variation, NEET
Louise Joy Brown is an English woman who was the first test-tube baby. She was born by a process in which

Options:
A Fertilization is external and foetus formation is internal
B Fertilization is internal and foetus formation is external
C Both fertilization and foetus formation are internal
D Both fertilization and foetus formation are external

The correct answer is:
Fertilization is external and foetus formation is internal

Solution:
Fertilization is the fusion of the ovum and the sperm. In cases of infertility assisted reproductive technologies (ART) are resorted to reproduction. One of the methods of ART is IVF (In-vitro fertilization) and Embryonic transfer (ET) commonly known as the test-tube baby method. The ovum from the wife/donor and sperm from the husband/donor are fertilized outside the body to form zygote under similar conditions. The zygote is later transferred into the uterus for further development of the embryo into a foetus.

Topic: Biology, Reproductive Health, NEET
Low level of noradrenaline is the cause of depression. What type of drugs are needed to cure this problem? Name two drugs.

Options:
A Antidepressants Prozac, Zoloft
B Antibiotics Penicillin, Amoxicillin
C Analgesics Aspirin, Ibuprofen
D Antihistamines Benadryl, Claritin

The correct answer is:
Antidepressants Prozac, Zoloft

Solution:
Correct Option is : (A)
Antidepressants Prozac, Zoloft

Topic: Chemistry, Chemistry in Everyday Life, NEET
Lowering in magnitude of water potential due to dissolution of a solute is called

Options:
A Solute potential (Ψs)
B Pressure potential (Ψp)
C Turgor pressure
D Suction pressure

The correct answer is:
Solute potential (Ψs)

Solution:
On addition of solute free energy of water molecules decreases and this decrease in free energy depends on the concentration of solute present and know as solute potential or osmotic potential.

Topic: Biology, Transport in Plants, NEET
LSD is extracted from

Options:
A a fungus
B a protozoan
C an alga
D a bryophyte

The correct answer is:
a fungus

Solution:
Lysergic acid diethylamide (LSD) is a hallucinogenic substance isolated from ergot caused by fungi Claviceps purpurea in plants. Claviceps is an Ascomycetes fungi that cause ergot diseases in plants.

Topic: Biology, Human Health and Diseases, NEET
LSD is extracted from

Options:
A Puccinia
B Claviceps
C Mucor
D Rhizopus

The correct answer is:
Claviceps

Solution:
Lysergic acid diethylamide is isolated from ergot caused by fungi Claviceps. Claviceps is an Ascomycetes fungus which causes ergot diseases in plants.

Topic: Biology, Biological Classification, NEET
'Lub' sound of Heart is caused by the ______

Options:
A closure of the semilunar valves
B opening of tricuspid and bicuspid valves
C opening of the semilunar valves
D closure of the tricuspid and bicuspid valves

The correct answer is:
closure of the tricuspid and bicuspid valves

Solution:
The correct answer is option (4) because LUB is the first heart sound and it is produced by closing of AV valves; (tricuspid valve in between right atrium and right ventricle) and (bicuspid /mitral valve in between left atrium and left ventricle), during ventricular systole.
- Option (1) is incorrect as closure of the semilunar valves produce the second heart sound called 'DUB'.
- Option (2) is incorrect because opening of valves are not responsible for production of heart sounds 'LUB' and 'DUB'.
- Option (3) is incorrect because opening of semilunar valves does not produce only heart sounds.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2024 (Re-NEET)
Lucas test is used to make distinguation between 1°,2° and 3° alcohols.
ROH+HClconc.→anydrousZnCl2RCl↓whiteturvidity+H2O
This shown that –

Options:
A ROH behaves as a base
B greater the value of pKa (alcohols), greater the reactivity with conc. HCl and thus sooner the formation of white tarbidity
C both of the above are correct
D none of the above is correct

The correct answer is:
both of the above are correct

Solution:
ROH behaves as a base and gets protonated. Greater the value of pKa (teritary alcohols), greater the reactivity with conc. HCl and thus sooner the formation of turbidity

Topic: Chemistry, Haloalkanes and Haloarenes, NEET