datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is a non-reducing sugar?

Options:
A
Lactose

B
Fructose

C
Sucrose

D
Maltose

The correct answer is:
Sucrose

Solution:
Sucrose is a non-reducing sugar as it does not reduce Fehling reagent and Tollen's reagent.

Topic: Chemistry, Biomolecules, JEE Main, JEE Main 2012 (19 May Online)
Which of the following is a nucleophile?

Options:
A $\mathrm{BH}_{3}$
B $\mathrm{NH}_{3}$
C $\mathrm{AlCl}_{3}$
D All of these

The correct answer is:
$\mathrm{NH}_{3}$

Solution:
Nucleophiles (ie, nucleus loving) are the species that have atleast one lone pair of electrons for donation, ie, they can also be called Lewis bases. Among the given, $\mathrm{BH}_{3}$ and $\mathrm{AlCl}_{3}$, being electron deficient, behave like electrophiles while $\ddot{\mathrm{N}} \mathrm{H}_{3}$, due to the presence of a lone pair over $\mathrm{N}$, is a nucleophile.

Topic: Chemistry, General Organic Chemistry, JEE Main
Which of the following is a point on the common chord of the circles $x^2+y^2+2 x-3 y+6=0$ and $x^2+y^2+x-8 y-13=0$

Options:
A $(1,-2)$
B $(1,4)$
C $(1,2)$
D $(1,-4)$

The correct answer is:
$(1,-4)$

Solution:
Equation of circles is
$\begin{aligned}& S_1=x^2+y^2+2 x-3 y+6=0...(i) \\& S_2=x^2+y^2+x-8 y-13=0...(ii)\end{aligned}$
$\therefore$ Equation of common chord is
$S_1-S_2=0 \Rightarrow x+5 y+19=...(iii)$
and out of the four given points only point $(1,-4)$ satisfies it.

Topic: Mathematics, Circle, JEE Main
Which of the following is a polyamide?

Options:
A
Teflon

B
Orlon

C
Nylon

D
Terylene

The correct answer is:
Nylon

Solution:
Nylon is an aliphatic polyamide.

Topic: Chemistry, Polymers, JEE Main, JEE Main 2012 (19 May Online)
Which of the following is a polyamide?

Options:
A
Teflon

B
Nylon – 66

C
Terylene

D
Bakelite

The correct answer is:
Nylon – 66

Solution:

Topic: Chemistry, Polymers, JEE Main, JEE Main 2005
Which of the following is a positive overlap that leads to bonding?

(I)

(II)

(III)

(IV)

Options:
A I and II
B II and III
C III and IV
D I and IV

The correct answer is:
II and III

Solution:
Concept: Overlapping of only same phase creates bonding.
(I) There is no case of bonding as a positive phase cannot simultaneously make bond with other orbital's positive as well as negative phase
(II) This creates bonding of p and d orbital.
(III) This creates bonding of two 'p' orbitals.
(IV) This is the case of anti-bonding of two 'd' orbitals.

Topic: Chemistry, Chemical Bonding and Molecular Structure, JEE Main
Which of the following is a possible graph for the quadratic equation $y=x^2-$ $4 x+4 ?$

Options:
A Parabola opening upwards, vertex at $(2,0)$
B Parabola opening downwards, vertex at $(2,0)$
C Parabola opening upwards, vertex at $(4,0)$
D Parabola opening downwards, vertex at $(4,0)$

The correct answer is:
Parabola opening upwards, vertex at $(2,0)$

Solution:
The given equation is in the form $y=a x^2+b x+c$, where the vertex of the parabola is given
by the point $\left(-b /(2 a), c-b^2 /(4 a)\right)$.
For $y=x^2-4 x+4$, the vertex is at $\left(-(-4) /(2 * 1), 4-(-4)^2 /(4 * 1)\right)=(2,0)$.
Therefore, the correct answer is 1. Parabola opening upwards, vertex at $(2,0)$.

Topic: Mathematics, Quadratic Equation, JEE Main
Which of the following is a primary consumer in maize field ecosytem?

Options:
A Grasshopper
B Wolf
C Phytoplankton
D Lion

The correct answer is:
Grasshopper

Solution:
Primary consumers are herbivorous organism, that feed on producers. In a food chain, grasshoppers are primary consumers, phytoplankton are producers, and wolf and lions are secondary and tertiary consumers respectively.
Related Theory
The amount of energy flow decrease with successive trophic levels as only $10 \%$ of energy is transferred from one trophic level to the next successive level. The energy is lost in the form of respiration and other vital activities to maintain life. If more trophic levels are present, the residual energy will be limited and decreased to such an extent that it cannot further support any trophic level by the flow of energy. So the food chain is generally limited to 3-4 trophic levels only.

Topic: Biology, Ecosystem, NEET, NEET 2013 (Karnataka)
Which of the following is a primary halide

Options:
A Isopropyl iodide
B Secondary butyl iodide
C Tertiary butyl bromide
D Neo hexyl chloride

The correct answer is:
Neo hexyl chloride

Solution:
Neohexyl chloride is a primary halide as in it $\mathrm{Cl}$-atom is attached to a primary carbon.

Topic: Chemistry, Haloalkanes and Haloarenes, JEE Main
Which of the following is a primary metabolite?

Options:
A Carotenoids
B Morphine
C Glucose
D Vinblastin

The correct answer is:
Glucose

Solution:
The product of metabolic reactions are called as metabolites. Metabolites which are main product of certain process are called as primary metabolites. Glucose is main product of photosynthesis thus is a primary metabolites. Secondary metabolites are waste product or excretory products which are converted to non toxic forms, these are present in plants, bacteria and fungi.

Topic: Chemistry, Biomolecules, NEET
Which of the following is a property of amides?

Options:
A They are typically very basic.
B They can form hydrogen bonds.
C They are volatile and have strong odors.
D They react readily with nucleophiles.

The correct answer is:
They can form hydrogen bonds.

Solution:
Amides have high boiling points due to hydrogen bonding.
Explanation: Amides have high boiling points because of strong hydrogen bonding between the $\mathrm{N}-\mathrm{H}$ group and the carbonyl oxygen of neighboring molecules.

Topic: Chemistry, Amines, JEE Main
Which of the following is a property of impurity defect?

Options:
A Electrical neutrality is maintained by vacancy of cation and anions
B Is a thermodynamic defect
C Electrical neutrality is maintained by vacancy of cation and adding another cation of different charge
D Doesn’t affects the density of solids

The correct answer is:
Electrical neutrality is maintained by vacancy of cation and adding another cation of different charge

Solution:
Correct Option is : 3
Electrical neutrality is maintained by vacancy of cation and adding another cation of different charge

Topic: Chemistry, Solid State, NEET
Which of the following is a property of schottky defect?

Options:
A Electrical neutrality is not maintained
B Occurs in non-ionic solids
C No. of missing cations and anions are equal
D Increases the density

The correct answer is:
No. of missing cations and anions are equal

Solution:
Correct Option is : 3
No. of missing cations and anions are equal

Topic: Chemistry, Solid State, NEET
Which of the following is a redox reaction ?

Options:
A
$\mathrm{NaCl}+\mathrm{KNO}_3 \rightarrow \mathrm{NaNO}_3+\mathrm{KCl}$

B
$\mathrm{CaC}_2 \mathrm{O}_4+2 \mathrm{HCl} \rightarrow \mathrm{CaCl}_2+\mathrm{H}_2 \mathrm{C}_2 \mathrm{O}_4$

C
$\mathrm{Mg}(\mathrm{OH})_2+2 \mathrm{NH}_4 \mathrm{Cl} \rightarrow \mathrm{MgCl}_2+2 \mathrm{NH}_4 \mathrm{OH}$

D
$\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow 2 \mathrm{Ag}+\mathrm{Zn}(\mathrm{CN})_2$

The correct answer is:
$\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow 2 \mathrm{Ag}+\mathrm{Zn}(\mathrm{CN})_2$

Solution:
The oxidation states show a change only in reaction (d)

Topic: Chemistry, Redox Reactions, JEE Main, JEE Main 2002
Which of the following is a set of characteristics corresponding to monocots?

Options:
A Tap root system, leaves with reticulate venation, tetramerous floral parts and one cotyledon
B Tap root system, parallel venation of leaves, pentamerous floral parts and one cotyledon.
C Fibrous root system, reticulate venation of leaves, trimerous floral parts and two cotyledons
D Fibrous root system, parallel venation of leaves, trimerous floral parts and one cotyledon

The correct answer is:
Fibrous root system, parallel venation of leaves, trimerous floral parts and one cotyledon

Solution:
Main root system of monocots is fibrous root which develops from the base of stem. Leaves shows parallel venation. Flower is trimerous as it have three members in each floral whorls and it has one cotyledon in seeds, these single cotyledons is known as scutellum.

Topic: Biology, Plant Kingdom, NEET
Which of the following is a set of greenhouse gases?

Options:
A O3, NO2, SO2, Cl2
B CH4, O3, N2, SO2
C CO2, CH4, N2O, O3
D O3, N2, CO2, NO2

The correct answer is:
CO2, CH4, N2O, O3

Solution:
CO2, CH4, N2O, O3 is a set of green housegases.

Topic: Chemistry, Environmental Chemistry, JEE Main, JEE Main 2017 (09 Apr Online)
Which of the following is a set of green-house gases?

Options:
A CO2,CH4,N2O,O3
B O3,NO2,SO2,Cl2
C CH4,O3,N2,SO2
D O3,N2,CO2,NO2

The correct answer is:
CO2,CH4,N2O,O3

Solution:
CO2,CH4,N2O and O3 are the green house gases. These gases are responsible for global warming. For example, carbon dioxide which is emitted from vehicles, factories etc. are mainly responsible green house gas.

Topic: Chemistry, Environmental Chemistry, NEET
Which of the following is a sexually transmitted disease but is not a reproductive tract infections?

Options:
A AIDS
B Syphilis
C Hepatitis-B
D Genital herpes

The correct answer is:
Hepatitis-B

Solution:
Hepatitis-B is a sexually transmitted, highly infectious, most dangerous and non-curable disease. It can also transmitted through contaminated blood, syringe, needles, surgical instruments and from infected mother to the foetus.
Hepatitis is mainly disease or inflammation of liver cells/hepatocytes.

Topic: Biology, Reproductive Health, NEET
Which of the following is a sink for CO?

Options:
A Haemoglobin
B Microorganisms present in the soil
C Oceans
D Plants

The correct answer is:
Microorganisms present in the soil

Solution:
Microorganisms present in the soil act as a sink for carbon monoxide

Topic: Chemistry, Environmental Chemistry, JEE Main
Which of the following is a step-growth polymer?

Options:
A Teflon
B \( P V C \)
C Polybutadiene
D Bakelite

The correct answer is:
Bakelite

Solution:
Step-growth polymerization refers to a type of polymerization mechanism in which bi-functional or multifunctional monomers react to form first dimers, trimers, longer oligomers, and eventually long-chain polymers.
The polyester Dacron and the polyamide Nylon-6,6, and Bakelite shown here, are the examples of synthetic condensation polymers, also known as step-growth polymers.

Topic: Chemistry, Polymers, JEE Main
Which of the following is a symbiotic nitrogen fixer ?

Options:
A Azolla
B Glomus
C Azotobacter
D Frankia

The correct answer is:
Frankia

Solution:
No Solution Available

Topic: Biology, Mineral Nutrition, NEET, NEET 2009 (Mains)
Which of the following is a tautology?

Options:
A ~p∧p∨q→q
B q→p∨~p→q
C ~q∨p∧q→q
D p→q∧q→p

The correct answer is:
~p∧p∨q→q

Solution:
A ~p∧p∨q→q

~p∧p∨~p∧q→q

c∨~p∧q→q (where c is contradiction)

~p∧q→q

~~p∧q∨q

=p∨~q∨q=p∨t=t

C ~q∨p∧q→q

=~q∨p∧~q∨q→q

=~q∨p→q

=q∧~p∨q=q =q

B and D

p	q	p→q	q→p	~p→q	(p→q)∧(q→p)	(q→p)∨~(p→q)

T	T	T	T	F	T	T

T	F	F	T	T	F	T

F	T	T	F	F	F	F

F	F	T	T	T	T	T

Topic: Mathematics, Mathematical Reasoning, JEE Main, JEE Main 2020 (02 Sep Shift 2)
Which of the following is a thermosetting polymer?

Options:
A Bakelite
B PVC
C Nylon 6
D Buna-N

The correct answer is:
Bakelite

Solution:
Thermosetting polymers are cross-linked or heavily branched molecules, which on heating undergo extensive cross linking and cannot be reused. Bakelite is a thermosetting polymer

Topic: Chemistry, Polymers, JEE Main, JEE Main 2019 (12 Apr Shift 1)
Which of the following is a total root parasite?

Options:
A Cuscuta
B Rafflesia
C Santalum
D Monotrapa

The correct answer is:
Rafflesia

Solution:
Rafflesia is a total root parasite, which remains attached to the roots of the host plants and derives all of its nutritions from them.
Cuscuta (dodder or amarbel) is a total stem parasite, while Santalum album (sandal wood) is a partial root parasite.

Topic: Biology, Organisms and Populations, JIPMER, JIPMER 2012
Which of the following is a wrong statement?

Options:
A Cl- along with K+ maintain anion-cation balance in the cell.
B Nitrogen is the essential element required by the plant in the greatest amount, it is absorbed, mainly, in the form of NO2- and NH3.
C Sulphur is an important constituent of Coenzyme-A and cysteine.
D Boron is important for uptake and utilization of Ca++

The correct answer is:
Nitrogen is the essential element required by the plant in the greatest amount, it is absorbed, mainly, in the form of NO2- and NH3.

Solution:
One of the essential macronutrients is nitrogen which is absorbed by the plant mainly in the form of NO3-. It is a major component of proteins, nucleic acids, vitamins and hormones.
Plants take up sulphur in the form of sulphate. It is the main constituent of coenzymes (Coenzyme A), vitamins and also amino acids like cysteine and methionine.
Boron, another essential element assists in uptake and utilization of Calcium, pollen germination, membrane functioning.
Chlorine, taken in the form of chloride helps in anion-cation balance in cell alongwith sodium and potassium ions. It is also essential for photolysis of water.

Topic: Biology, Mineral Nutrition, NEET
Which of the following is added to chloroform to slow down its aerial oxidation in presence of light ?

Options:
A Carbonyl chloride
B Ethyl alcohol
C Sodium hydroxide
D Nitric acid

The correct answer is:
Ethyl alcohol

Solution:
Ethyl alcohol is used as a negative catalyst for the aerial oxidation of chloroform in presence of light. So, ethyl alcohol is added to chloroform.

Topic: Chemistry, Haloalkanes and Haloarenes, JEE Main
Which of the following is affected most by extreme observations?

Options:
A Median
B Mode
C Harmonic mean
D Arithmetic mean

The correct answer is:
Arithmetic mean

Solution:
Mean=∑xn

Most extreme observations when added to remaining observations for arithmetic mean, then total sum gets affected. Therefore, arithmetic mean gets affected most.

Topic: Mathematics, Statistics, JEE Main
Which of the following is an aldohexose

Options:
A Cellulose
B Sucrose
C Glucose
D Raffinose

The correct answer is:
Glucose

Solution:
Aldohexose is a monosaccharide whose molecular structure
contains both an aldehyde (an aldose)
and six carbons (a hexose). Molecular structure
of D-glucose, the most common aldohexose.

Topic: Chemistry, Biomolecules, JEE Main
Which of the following is an amino acid derived hormone?

Options:
A Estradiol
B Ecdysone
C Epinephrine
D Estriol

The correct answer is:
Epinephrine

Solution:
Chemically, epinephrine is a catecholamine hormone, a sympathomimetic monoamine derived from the amino acids phenylalanine and tyrosine. The chemical formula of epinephrine is C9H13NO3.

Remaining are steroid hormones, i.e, they are produced from steroidal precursors.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2018
Which of the following is an amphoteric oxide?

Options:
A V 2 O 5 ,Cr 2 O 3
B Mn 2 O 7 ,Cr 2 O 3
C CrO,V 2 O 5
D V 2 O 5 ,V 2 O 4

The correct answer is:
V 2 O 5 ,Cr 2 O 3

Solution:
The oxides which can react with both i.e acids and bases are called amphoteric oxides.
Oxides of vanadium V and chromium Cr show amphoteric nature in their oxides.
Hence V 2 O 5 ,â Cr 2 O 3 is the correct option.

Topic: Chemistry, d and f Block Elements, JEE Main
Which of the following is an anionic detergent?

Options:
A Cetyltrimethyl ammonium bromide
B Glyceryl oleate
C hexadecyltrimethyl ammonium bromide
D Sodium lauryl sulphate

The correct answer is:
Sodium lauryl sulphate

Solution:
Organic compound with the formula C H 3 ( C H 2 ) 11 S O 4 − N a + . It is an anionic Detergent.

Topic: Chemistry, Chemistry in Everyday Life, JEE Main, JEE Main 2016 (03 Apr)
Which of the following is an anionic detergent?

Options:
A Glyceryl oleate
B Sodium stearate
C Sodium lauryl sulphate
D Cetyltrimethyl ammonium bromide

The correct answer is:
Sodium lauryl sulphate

Solution:
A. Anionic detergent: CH 3 â ( CH 2 ) 10 â CH 2 âOâ S || O || O â O â Na â
Sodium Lauryl sulphate is example of anionic detergent.
These are sodium salts of sulphonated long chain alcohols or hydrocarbons.
CH 3 − CH 2 10 − CH 2 −OH → H 2 SO 4 conc. CH 3 − CH 2 10 CH 2 −O− S || O || O −OH → NaOH aq
CH 3 â ( CH 2 ) 10 â CH 2 âOâ S || O || O â O â Na â
Sodium lauryl sulphate (anionic detergent)
B. Cationic detergent:
Cetyle trimethyl ammonium bromide is an example of cationic detergent.
C. C17H35CO2Na : Sodium sterarate (soap)

Topic: Chemistry, Chemistry in Everyday Life, JEE Main
Which of the following is an aquatic fern and an excellent bio-fertilizer?

Options:
A Azolla
B Salvinia
C Marsilia
D Pteridium

The correct answer is:
Azolla

Solution:
Azolla is a freshwater fern harbouring a blue green algae - Anabaena in its leaf cavities. The alga fix atmospheric nitrogen and releases nitrogenous compounds in leaf cavities. This symbiotic system is the main source of algal biofertilizer in rice fields.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following is an aromatic compound?

Options:
A
B
C
D

The correct answer is:

Solution:

Topic: Chemistry, General Organic Chemistry, JEE Main, JEE Main 2021 (17 Mar Shift 1)
Which of the following is an ecosystem service provided by a natural ecosystem?

Options:
A
Cycling of nutrients

B
Prevention of soil erosion

C
Pollutant absorption and reduction of the threat of global warming

D
All of the above

The correct answer is:
All of the above

Solution:
A natural ecosystems maintain its biotic and abiotic factors naturally. The products of ecosystem processes are known as the ecosystem services. A healthy ecosystem provides a wide range of economic, environmented and aesthetic goods and services.
Following are the various ecosystem services provided by a natural ecosystem that includes
(i) Purify air and water
(ii) Migration of droughts and floods
(iii) Nutrient cycling
(iv) Generation of fertile soil
(v) Maintenance of biodiversity
(vi) Provide storage site for carbon
(vii) Pollinate crops
(viii) Also provides aesthetic, cultural and spiritual values Thus, all the other options are correct.

Topic: Biology, Ecosystem
Which of the following is an electrophile

Options:
A $\mathrm{H}_2 \mathrm{O}$
B $\mathrm{SO}_3$
C $\mathrm{NH}_3$
D $R O R$

The correct answer is:
$\mathrm{SO}_3$

Solution:
$H-\dddot{O}-H_1: N H_3, R-\ddot{O}-R$ - nucleophiles $S_3$ has electron deficient centre (a reagent which can accept an electron pair in a reaction, is called an electrophile)

Topic: Chemistry, General Organic Chemistry, JEE Main
Which of the following is an empty set?

Options:
A $\left\{x: x^2+1=0, x \in R\right\}$
B $\left\{x: x^2-9=0, x \in R\right\}$
C $\left\{x: x^2=x+2 x \in R\right\}$
D $\left\{x: x^2-1=0, x \in R\right\}$

The correct answer is:
$\left\{x: x^2+1=0, x \in R\right\}$

Solution:
Here, $x^2+1=0$
$\begin{array}{ll}\Rightarrow & x^2=-1 \\ \Rightarrow & \dot{x}= \pm i\end{array}$
It $x$ is an imaginary number.
Hence, $\left\{x: x\right.$ is a real number and $\left.x^2+1=0\right\}$ is an empty set

Topic: Mathematics, Sets and Relations, JEE Main
Which of the following is an emulsifier

Options:
A Soap
B Water
C Oil
D $\mathrm{NaCl}$

The correct answer is:
Soap

Solution:
Correct option is 1. Soap
The presence of soap in a mixture of oil/grease and water will create an emulsion upon agitation. The hydrocarbon tails of soap dissolves in the oil and promotes droplet formation. These droplets repel each other, as they have the same net negative charge. These individual droplets can be dissolved in water as they form ion-dipole interactions. Therefore, Soap is an emulsifier.

Topic: Chemistry, Surface Chemistry, JEE Main
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure? Where, 1→2 is adiabatic. (Graphs are schematic and are not to scale)

Options:
A
B
C
D

The correct answer is:

Solution:
For process 3→1, Volume is constant,
PV=nPT; as P increases T increases.
For process 1→2, the process is adiabatic process,
PVγ= Constant
⇒TVγ-1= Constant.
For process 2→3, pressure is constant,
V=kT.

Topic: Physics, Thermodynamics, JEE Main
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure? Where, 1→2 is adiabatic. (Graphs are schematic and are not to scale)

Options:
A
B
C
D

The correct answer is:

Solution:
For process 3→1, Volume is constant,
PV=nPT; as P increases T increases.
For process 1→2, the process is adiabatic process,
PVγ= Constant
⇒TVγ-1= Constant.
For process 2→3, pressure is constant,
V=kT.

Topic: Physics, Thermodynamics, JEE Main, JEE Main 2020 (09 Jan Shift 1)
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure?
Where, \( 1 \rightarrow 2 \) is adiabatic. (Graphs are schematic and are not to scale)

Options:
A
B
C
D

The correct answer is:

Solution:
For process 3→1, Volume is constant,
PV=nPT; as P increases T increases.
For process 1→2, the process is adiabatic process,
PVγ= Constant
⇒TVγ-1= Constant.
For process 2→3, pressure is constant,
V=kT.

Topic: Physics, Thermodynamics, JEE Main
Which of the following is an example of conjugated diketone?

Options:
A

B
C

D

The correct answer is:

Solution:
In the dione, there are two keto groups are present. If π bonds are separated by a single bond, then we can say that there exists a conjugation. In the molecule all π bonds separated by single bonds and it is a dione.

Topic: Chemistry, General Organic Chemistry, JEE Main, JEE Main 2022 (24 Jun Shift 1)
Which of the following is an example of homoleptic complex?

Options:
A CoNH36Cl3
B PtNH32Cl2
C CoNH34Cl2
D CoNH35ClCl2

The correct answer is:
CoNH36Cl3

Solution:
Homoleptic complexes have only one type of ligands. In the complex CoNH36Cl3, all the ligands are ammonia molecules.

Topic: Chemistry, Coordination Compounds, JEE Main, JEE Main 2016 (10 Apr Online)
Which of the following is an example of intensive property?

Options:
A Enthalpy
B Energy
C Mass of substance
D Surface tension

The correct answer is:
Surface tension

Solution:
Surface tension is an intensive property which do not depend upon the quantity of matter present in the system.

Topic: Chemistry, Thermodynamics (C), JEE Main
Which of the following is an example of polyester?

Options:
A Butadiene-styrene copolymer
B Melamine polymer
C Neoprene
D Poly- β-hydroxybutyrate-co- β-hydroxyvalerate

The correct answer is:
Poly- β-hydroxybutyrate-co- β-hydroxyvalerate

Solution:
Poly β-hydroxybutyrate-co- β-hydroxy valerate (PHBV) : It is obtained by the copolymerisation of 3-hydroxybutanoic acid and 3-hydroxypentanoic acid.

PHBV is used in speciality packaging, orthopaedic devices and in controlled release of drugs. PHBV undergoes bacterial degradation in the environment.

Topic: Chemistry, Polymers, JEE Main, JEE Main 2022 (24 Jun Shift 1)
Which of the following is an example of unicellular glandular cells?

Options:
A Cells of salivary gland
B Goblet cells of alimentary canal
C Cells of inner lining of ducts of salivary glands
D Cells on the moist surface of buccal cavity

The correct answer is:
Goblet cells of alimentary canal

Solution:
Some of the columnar or cuboidal cells get specialised for secretion and are called the glandular epithelium. They are mainly of two types: unicellular, consisting of isolated glandular cells (goblet cells of the alimentary canal), and multicellular, consisting of a cluster of cells (salivary gland).

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is an important function of cortisol?

Options:
A Maintains cardio-vascular system as well as the kidney functions.
B Absorption of calcium from gut.
C Absorption of water in PCT
D Absorption of iron from gut.

The correct answer is:
Maintains cardio-vascular system as well as the kidney functions.

Solution:
Glucocorticoids like cortisol are mainly involved in carbohydrate metabolism. Glucocorticoids stimulate gluconeogenesis, lipolysis and proteolysis. These inhibit cellular uptake and utilization of amino acids. Cortisol also helps in maintaining the cardiovascular system and the kidney functions. GCs (particularly cortisol) produce anti-inflammatory reactions and also suppress the immune response. Cortisol increases RBC production.

Topic: Biology, Chemical Coordination and Integration, NEET