datavorous/entrance-exam-dataset huggingface dataset:
Which hormone tends to increase the blood glucose level in human?

Options:
A Insulin
B Glucagon
C Epinephrine
D Estrogen

The correct answer is:
Glucagon

Solution:
Hormones have several functions in the body. They help to maintain the balance of biological activities in the body.

The role of insulin in keeping the blood glucose level within the narrow limit is an example of this function. Insulin is released in response to the rapid rise in blood glucose level. On the other hand hormone glucagon tends to increase the glucose level in the blood. The two hormones together regulate the glucose level in the blood.

Epinephrine and norepinephrine mediate responses to external stimuli.

Estrogen or oestrogen is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.

In terms of chemical nature, some of these are steroids, e.g., estrogens and androgens; some are poly peptides for example insulin and endorphins and some others are amino acid derivatives such as epinephrine and norepinephrine

Topic: Chemistry, General Organic Chemistry, JEE Main
Which hormone tends to increase the blood glucose level in human?

Options:
A Insulin
B Glucagon
C Epinephrine
D Estrogen

The correct answer is:
Glucagon

Solution:
Hormones have several functions in the body. They help to maintain the balance of biological activities in the body.

The role of insulin in keeping the blood glucose level within the narrow limit is an example of this function. Insulin is released in response to the rapid rise in blood glucose level. On the other hand hormone glucagon tends to increase the glucose level in the blood. The two hormones together regulate the glucose level in the blood.

Epinephrine and norepinephrine mediate responses to external stimuli.

Estrogen or oestrogen is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.

In terms of chemical nature, some of these are steroids, e.g., estrogens and androgens; some are poly peptides for example insulin and endorphins and some others are amino acid derivatives such as epinephrine and norepinephrine

Topic: Chemistry, General Organic Chemistry, AP EAMCET, AP EAMCET 2022 (04 Jul Shift 1)
Which hydride among the following is less stable?

Options:
A BeH2
B HF
C NH3
D LiH

The correct answer is:
BeH2

Solution:
BeH2 is indeed considered to be less stable compared to other hydrides among the given due to its significant covalent character and electron deficiency. Beryllium, being a small and highly charged cation, attracts the electrons in the Be-H bonds more strongly, resulting in a greater degree of electron sharing between beryllium and hydrogen. This covalent character is in contrast to other alkaline earth metal hydrides, which tend to have more ionic character.

Topic: Chemistry, Hydrogen, JEE Main, JEE Main 2023 (11 Apr Shift 2)
Which hydrogen in compound E is easily replaceable during bromination reaction in presence of light ?

Options:
A β - hydrogen
B δ - hydrogen
C α -hydrogen
D γ - hydrogen

The correct answer is:
γ - hydrogen

Solution:
Allylic radial is more stable due to resonance.
Rate of reaction ∝ Stability of free radical

Topic: Chemistry, Hydrocarbons, JEE Main, JEE Main 2019 (10 Jan Shift 1)
Which hydrogen like species will have same radius as that of first Bohr's orbit of hydrogen atom?

Options:
A n=2,Be3+
B n=2,Li2+
C n=2,He+
D n=3,Li2+

The correct answer is:
n=2,Be3+

Solution:
Ist Bohr's orbit r 0  = 0.529  A o of hydrogen
(i) n=2,Be3+(Z=4)â´r=r0Ãn2Z=r0
(ii) n=2,Li2+(Z=3)â´r=r0Ã223=4r03
(iii) n=2,He+(Z=2)â´r=r0Ã222=2r0
(iv) n=3,Li2+(Z=3)â´r=r0Ã323=3r0

Topic: Chemistry, Structure of Atom, JEE Main
Which impurity is doped in Si to form N - type semiconductor?

Options:
A \( \mathrm{Al} \)
B B
C As
D None of these

The correct answer is:
As

Solution:
To form N- type semiconductor, silicon is doped with pentavalent impurity. Pentavalent impurities are those with five valence electrons in their valence shell. Among Al, B and As, Arsenic As is pentavalent and can be used as impurity in silicon to form N- type semiconductor.

Topic: Physics, Semiconductors, JEE Main
Which In K vs 1/T plot is correct for an equilibrium that shifts toward reactants at higher temperatures?

Options:
A
B
C
D

The correct answer is:

Solution:
In K = - Î H â R 1 T + Î S â R
At high temperature if shifted backward, it is exothermic reaction.
Î H reac o is -ve
Slope is +ve

Topic: Chemistry, Chemical Equilibrium, JEE Main
Which inert gas shows abnormal behaviour on liquefaction?

Options:
A \( \mathrm{Xe} \)
B \( \mathrm{He} \)
C \( \mathrm{Ar} \)
D \( \mathrm{Kr} \)

The correct answer is:
\( \mathrm{He} \)

Solution:
If helium is compressed and liquefied, it forms He(I) liquid at 4.2 K. This liquid is a normal liquid like any other liquid. But if it is further cooled, He(II) is obtained at 2.2 K, which is known as a superfluid, because it is a liquid with the properties of a gas. It climbs up the walls of the container and comes out. It has very high thermal conductivity and very low viscosity.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), JEE Main
Which information below regarding this reaction is applicable?

Options:
A It follows $\mathrm{S}_{\mathrm{N}} 2$ pathway, because it is a primary alkyl chloride.
B It follows $S_{N} 1$ pathway, because the intermediate carbocation is resonance stabilized.
C $\mathrm{S}_{\mathrm{N}} 1$ pathway is not followed, because the intermediate carbocation is destabilised by $-1$ effect of oxygen
D A mixed $\mathrm{S}_{\mathrm{N}} 1$ and $\mathrm{S}_{\mathrm{N}} 2$ pathway is followed.

The correct answer is:
A mixed $\mathrm{S}_{\mathrm{N}} 1$ and $\mathrm{S}_{\mathrm{N}} 2$ pathway is followed.

Solution:
Hint:

$\mathrm{S}_{\mathrm{N}} 2$ is also facilitated by OH due to resonance stablization of transition state.

Topic: Chemistry, Haloalkanes and Haloarenes, JEE Main
Which intermediates do not form during chain-growth polymerization?

Options:
A
B
C
D

The correct answer is:

Solution:
Carbenes are never produced during chain growth polymerisation.

Topic: Chemistry, Polymers, JEE Main
Which intermolecular force is most responsible in allowing xenon gas to liquefy?

Options:
A London forces
B Ion-dipole
C Ionic
D Dipole-dipole

The correct answer is:
London forces

Solution:
London dispersion Force (LDF), also known as london forces, or instantaneous dipole-induced dipole forces, is the weakest Vander-waal's force which arises in non-polar molecules due to temporary rearrangement of electrons.

Topic: Chemistry, States of Matter, JEE Main, JEE Main 2016 (09 Apr Online)
Which ion has the largest radius from the following ions

Options:
A $\mathrm{Na}^{+}$
B $\mathrm{Mg}^{2+}$
C $A I^{3+}$
D $S i^{4+}$

The correct answer is:
$\mathrm{Na}^{+}$

Solution:
All are the iso-electronic species but $\mathrm{Na}^{+}$has low positive charge so have largest radius.

Topic: Chemistry, Solid State, JEE Main
Which ions are selectively secreted by the Collecting Duct to maintain the pH and ionic balance of blood?

Options:
A Na⁺ and Cl⁻
B H⁺ and K⁺
C Ca²⁺ and Mg²⁺
D HCO₃⁻ and CO₃²⁻

The correct answer is:
H⁺ and K⁺

Solution:
The Collecting Duct plays a role in the maintenance of pH and ionic balance of blood by the selective secretion of H⁺ and K⁺ ions.

Topic: Biology, Excretory Products and their Elimination, NEET
Which is a buffer solution

Options:
A $\mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{COONa}$
B $\mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{COONH}_4$
C $\mathrm{CH}_3 \mathrm{COOH}+\mathrm{NH}_4 \mathrm{Cl}$
D $\mathrm{CH}_3 \mathrm{COOH}+\mathrm{NH}_4 \mathrm{Cl}$

The correct answer is:
$\mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{COONa}$

Solution:
Buffer solution is a mixture of weak acid and its conjugate base.

Topic: Chemistry, Ionic Equilibrium, JEE Main
Which is a natural colloidal

Options:
A Sodium chloride
B Urea
C Canesugar
D Blood

The correct answer is:
Blood

Solution:
Correct option is 4. Blood
Blood is a natural colloid.
Sodium chloride, cane sugar, and urea can get dissolved completely in water and forms a homogeneous solution.

Topic: Chemistry, Surface Chemistry, JEE Main
Which is a useful product of epidermal origin?

Options:
A Saffron
B Cotton fibres
C Clove
D Jute

The correct answer is:
Cotton fibres

Solution:
Cotton is obtained from the epidermal hair present on the surface of seeds of Gossypium sp. These are made up of cellulose only and may be of two types, i.e., extractable lint and non-extractable fluffy fuzz. Cotton fibres are mainly used for textiles, celluloid, cellophane, rayon and paper pulp.

Topic: Biology, Anatomy of Flowering Plants, JIPMER, JIPMER 2012
Which is an electrophile

Options:
A $\mathrm{BCl}_3$
B $\mathrm{CH}_3 \mathrm{OH}$
C $\mathrm{NH}_3$
D $\mathrm{AlCl}_4^{-}$

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

Solution:
Electron deficient species (in complete octet) acts as an electrophile i.e. $\mathrm{BCl}_3$.

Topic: Chemistry, General Organic Chemistry, JEE Main
Which is an electrophile

Options:
A $\mathrm{AlCl}_3$
B $\mathrm{CN}$
C $\mathrm{NH}_3$
D $\mathrm{CH}_3 \mathrm{OH}$

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

Solution:
Electron deficient species (in complete octet) acts as an electrophile i.e. $\mathrm{AlCl}_3$.

Topic: Chemistry, General Organic Chemistry, JEE Main
Which is an ore of potassium

Options:
A Carnellite
B Cryolite
C Bauxite
D Dolomite

The correct answer is:
Carnellite

Solution:
Carnellite $-\mathrm{KCl} . \mathrm{MgCl} 2.6 \mathrm{H}_2 \mathrm{O}$
$\begin{aligned} & \text { Cryolite - } \mathrm{Na}_3 \mathrm{AlF}_6 \\ & \text { Bauxite }-\left(\mathrm{Al}_2 \mathrm{O}_3 .2 \mathrm{H}_2 \mathrm{O}\right) \\ & \text { Dolomite }-\mathrm{MgCO}_3 . \mathrm{CaCO}_3\end{aligned}$

Topic: Chemistry, s Block Elements, JEE Main
Which is best method for leaching of bauxite ore of aluminium, containing impurities of iron oxide?

Options:
A Electrolytic reduction
B Halt and Heroult process
C Baeyer's process
D Serpeck's process

The correct answer is:
Baeyer's process

Solution:
For the leaching of red bauxite which contains iron oxide as impurity Baeyer's process is used. For the purification of white bauxite which contains silica as the main impurity Serpeck's process is used.

Topic: Chemistry, p Block Elements (Group 13 & 14), JEE Main
Which is correct about 'Rayon'?

Options:
A Natural silk
B Artificial silk
C Natural plastic or rubber
D Synthetic plastic

The correct answer is:
Artificial silk

Solution:
'Rayon' is semi-synthetic fibre which consists of purified cellulose in the form of long threads. Rayon resembles silk in appearance. Hence called as artificial silk.
Cellulose → CS 2 NaOH Viscose (Syrup like liquid) → Spinneret into dil.  H 2 SO 4 Pass through Rayon (Fine silken thread)

Topic: Chemistry, Polymers, JEE Main
Which is correct characteristics of saccharin

Options:
A It is

B It is 600 times sweeter than sugar
C It is used as sweetening agent
D All of these

The correct answer is:
All of these

Solution:
All are characteristics of Saccharin.

Topic: Chemistry, Chemistry in Everyday Life, JEE Main
Which is correct option for sulphur dioxide \( \left(\mathrm{SO}_{2}\right) \) molecule

Options:
A Polar molecule with polar bonds.
B Polar molecule with non-polar bonds.
C Non-polar molecule with polar bonds.
D Non-polar molecule with non-polar bonds.

The correct answer is:
Polar molecule with polar bonds.

Solution:
SO2 molecule is having polar S-O bonds and its dipole moment is non-zero so, it is polar molecule.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), JEE Main
Which is correct oxidation state of lead

Options:
A $+2,+4$
B $+1,+2$
C $+3,+4$
D +4

The correct answer is:
$+2,+4$

Solution:
Lead shows two types oxidation states +2 oxidation state which is lower oxidation state due to inert pair effect(stable oxidation state for lead). +4 oxidation state which is Higher oxidation state

Topic: Chemistry, p Block Elements (Group 13 & 14), JEE Main
Which is correct relationship between K p and K c for following reversible reaction at 10 K temperature? Kp and Kc in units of atm and M respectively
A 2 g  +  3B 2 g  ⇌  2AB 3 g

Options:
A Kp > Kc
B KpÂ <Â Kc
C KpÂ =Â Kc
D Relation cannot be predicted

The correct answer is:
Kp > Kc

Solution:
K p  =  K c RT Δn g
Here, RTâ=â 1 12 âÃâ10â(<1) and În g â=â2â4â=ââ2
â´Kp>Kc

Topic: Chemistry, Chemical Equilibrium, JEE Main
Which is correctly matched?
\(\begin{array}{|l|l|l|l|l|}\hline & \text{Alcohol} & \alpha-\mathrm{H} & \beta-\mathrm{H} & \text{ Colour in } \\& & & & \text{ victor meyer } \\\hline A & X & 3 & 0 & \text{Colourless} \\\hline B & Y & 1 & 6 & \text{Blue} \\\hline C & Z & 0 & 9 & \text{Red} \\\hline\end{array}\)

Options:
A \( \mathrm{A} \) and \( \mathrm{B} \)
B \( \mathrm{B} \) and \( \mathrm{C} \)
C Only C
D Only B

The correct answer is:
Only B

Solution:
The Victor Meyer test is used to differentiate between primary, secondary, and tertiary alcohol by the colour they obtain when they interact with the victor Meyer reagent.

Primary alcohols – Red colour

Secondary alcohols – Blue colour

Tertiary alcohol – No colour is observed.

Alcohol X which has three alpha hydrogen and zero beta hydrogen, so the structure will be CH3-OH

Alcohol Y which has one alpha hydrogen and six hydrogens, so the structure will be (CH3)2CH-OH and it is sec. alcohol.

Alcohol Z which has zero alpha hydrogen and nine beta hydrogen, so the structure will be (CH3)3C-OH and it is tert. alcohol.

Topic: Chemistry, Alcohols Phenols and Ethers, JEE Main
Which is essential for the growth of the root tip?

Options:
A Zn
B Fe
C Ca
D Mn

The correct answer is:
Ca

Solution:
Source: It is absorbed by the plants in the form of Ca2+ from calcium carbonate etc.

Functions:

(i) It is necessary for the formation of the middle lamella of plants where it occurs as calcium pectate.

(ii) It is necessary for the growth of apical meristem and root hair and tip formation.

(iii) It acts as an activator of several enzymes, e.g., ATPase, succinic dehydrogenase, adenylate kinase, etc.

(iv) Along with Na+ and K+, it maintains the permeability of the plasma membrane.

(v) It is involved in the organization of spindle fibers during mitosis.

(vi) It antagonizes the toxic effects of Na+ and Mg++. It is essential for fat metabolism, carbohydrate metabolism, nitrate assimilation, and binding of nucleic acids with proteins. Calcium is required by dividing and differentiating cells.

Topic: Biology, Mineral Nutrition, NEET, NEET 2016 (Phase 2)
Which is having a minimum wavelength?

Options:
A X-rays
B Ultraviolet rays
C $\gamma$-rays
D Cosmic rays

The correct answer is:
Cosmic rays

Solution:
Cosmic rays, having very short wavelength.
Wavelengths $\rightarrow$
$\mathrm{X}$-ray $\Rightarrow 1 Å$ to $100 Å$
Ultraviolet rays $\rightarrow 100 Å$ to $1 Å$
V-rays $\rightarrow 0.001 Å$ to $1 Å$
Cosmic rays $\rightarrow$ upto $4 \times 10^{-3} Å$

Topic: Physics, Electromagnetic Waves, JEE Main
Which is helpful in the formation of ionic bond

Options:
A Only small cation
B Only small anion
C Small cation and small anion both
D Low positive charge, large cation and small anion

The correct answer is:
Low positive charge, large cation and small anion

Solution:
For ionic bond formation low I.E., high electron affinity and high lattice energy is needed.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, JEE Main
Which is incorrect for buffer solution

Options:
A It contains weak acid and its conjugate base
B It contains weak base and its conjugate acid
C In this there is very less change is $\mathrm{pH}$ value when very less amount of acid and base is mixed
D None of the above

The correct answer is:
None of the above

Solution:
Weak acid + its conjugate base \(\rightarrow\) acid buffer
Weak base + its conjugate acid \(\rightarrow\) basic buffer
A buffer solution resist the change in \(\mathrm{pH}\) on adding a drop of acid or a base.

Topic: Chemistry, Ionic Equilibrium, JEE Main
Which is incorrect statements among the following?

Options:
A Zinc blende and Galena are sulphides
B Argentite and cuprite are oxides
C Calamine and siderite are carbonates
D Malachite and azurite are ores of copper

The correct answer is:
Argentite and cuprite are oxides

Solution:
An oxide is a a binary compound of oxygen with another element or group.
Chemical formula for cuprite is Cu 2 O and chemical formula of argentite is Ag 2 S.
Therefore, Argenite is not an oxide. Cuprite is an oxide mineral.
Therefore, given statement is incorrect.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, JEE Main
Which is metalloid

Options:
A $\mathrm{Pb}$
B $S b$
C $B i$
D $\mathrm{Zn}$

The correct answer is:
$S b$

Solution:
A metalloid is an element with properties similar to both metals and non-metals. The known metalloids are boron, silicon, germanium, arsenic, antimony, tellurium and polonium.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, JEE Main
Which is more basic oxygen in an ester?

Options:
A Carbonyl oxygen, $\alpha$
B Carboxyl oxygen, $\beta$
C Equally basic
D Both are acidic oxygen

The correct answer is:
Carbonyl oxygen, $\alpha$

Solution:
$\alpha-\mathrm{O}$ oxygen atom can donate lone pair of electron more easily, therefore, it is more basic than $\beta$-oxygen.

Topic: Chemistry, Carboxylic Acid Derivatives, JEE Main
Which is most acidic of the following

Options:
A Methane
B Acetylene
C 1-butene
D Neo-pentane

The correct answer is:
Acetylene

Solution:
The $s$-character of $\mathrm{C}-\mathrm{H}$ bond of acetylene is higher in comparison to $\mathrm{C}-\mathrm{H}$ bond of ethene and ethane. The electrons of the $C-H$ bond in acetylene are strongly held by carbon nuclei. This facilitates the removal of hydrogen as proton.

Topic: Chemistry, General Organic Chemistry, JEE Main
Which is not a mineral of aluminium

Options:
A Anhydrite
B Bauxite
C Corundum
D Diaspore

The correct answer is:
Anhydrite

Solution:
$\begin{aligned} & \text { Bauxite }\left(\mathrm{Al}_2 \mathrm{O}_3 \cdot 2 \mathrm{H}_2 \mathrm{O}\right) \\ & \text { Corundum }\left(\mathrm{Al}_2 \mathrm{O}_3\right) \\ & \text { Diaspore }\left(\mathrm{Al}_2 \mathrm{O}_3 \cdot \mathrm{H}_2 \mathrm{O}\right)\end{aligned}$
Anhydrite \(\left(\mathrm{CaSO}_4\right)\)

Topic: Chemistry, General Principles and Processes of Isolation of Metals, JEE Main
Which is not a property of solids

Options:
A Solids are always crystalline in nature
B Solids have high density and low compressibility
C The diffusion of solids is very slow
D Solids have definite volume

The correct answer is:
Solids are always crystalline in nature

Solution:
Solids are also non-crystalline in nature.

Topic: Chemistry, Solid State, JEE Main
Which is not an example of common ion effect?

Options:
A $\mathrm{NaCl}+\mathrm{AgCl}$
B $\mathrm{H}_{2} \mathrm{~S}+\mathrm{HCl}$
C $\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{NaOH}$
D $\mathrm{NH}_{4} \mathrm{OH}+\mathrm{NH}_{4} \mathrm{Cl}$

The correct answer is:
$\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{NaOH}$

Solution:
Common ion effect is the suppression of degree of dissociation of a weak electrolyte in the presence of a strong electrolyte having common ion.
Among the given, $\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{NaOH}$ has no common ion, thus does not exhibit common ion effect.

Topic: Chemistry, Ionic Equilibrium, JEE Main
Which is not the correct Statement?
(At. nos. $\mathrm{Ce}=58, \mathrm{Lu}=71, \mathrm{La}=57, \mathrm{Yb}=70$ )

Options:
A
Colour of $\mathrm{Yb}^{3+}$ ion is pink.

B
$\mathrm{La}^{3+}$ is diamagnetic.

C
$\mathrm{Ce}^{4+}$ has $f^0$ configuration.

D
$\mathrm{Lu}^{3+}$ had $f^{14}$ configuration.

The correct answer is:
Colour of $\mathrm{Yb}^{3+}$ ion is pink.

Solution:
Option (a) is incorrect as $\mathrm{Yb}^{3+}$ is colorless.

Topic: Chemistry, d and f Block Elements, JEE Main, JEE Main 2012 (07 May Online)
Which is not true about borax?

Options:
A It is a useful primary standard for titrating against acids
B One mole of borax contains 4 B-O-B bonds
C Aqueous solution of borax can be used as buffer
D It is made up of two triangular BO3 units and two tetrahedral BO4 units

The correct answer is:
One mole of borax contains 4 B-O-B bonds

Solution:
Here only in option B is incorrect while rest other are correct.
In borax Na2B4O7.10H2O, among 10 water molecules 2 molecules are part of structure, i.e., exists Na2[B4O5(OH)4].8H2O
Na2[B4O5(OH)4].8H2O+2HCl→2NaCl+4H3BO3+5H2O
Methyl orange (pH = 3.7) is used to detect end point. Aqueous solution of borax acts as buffer, as borax is salt of strong base NaOH and weak acid H3BO3 .

Topic: Chemistry, p Block Elements (Group 13 & 14), JEE Main
Which is obtained on treating phenol, with dilute $\mathrm{HNO}_3$

Options:
A

B

C

D None of these

The correct answer is:

Solution:

Topic: Chemistry, Alcohols Phenols and Ethers, JEE Main
Which is polysaccharide

Options:
A Starch
B Cellulose
C Glycogen
D All of these

The correct answer is:
All of these

Solution:
Starch, glycogen, cellulose & chitin are polysaccharides made up of many sugar units.

Topic: Chemistry, Biomolecules, JEE Main
Which is the best method of germplasm conservation?

Options:
A Botanical garden
B Seed bank
C Herbarium
D Zoological park

The correct answer is:
Seed bank

Solution:
Germplasm conservation is the storage of seed, gene, or cells and it is stored in seed banks. The viability of seeds remains for hundreds and even thousands of years. Hence, the best method under ex situ conservation strategies is the seed bank method with which the loss of genetic diversity of rare or imperiled plant species can be avoided.

Topic: Biology, Biodiversity and its Conservation, NEET
Which is the best reagent to convert cyclohexanol into cyclohexene.

Options:
A conc. \( \mathrm{HCl} \)
B conc. HBr
C conc. \( \mathrm{H}_{3} \mathrm{PO}_{4} \)
D \( \mathrm{HCl}+\mathrm{ZnCl}_{2} \)

The correct answer is:
conc. \( \mathrm{H}_{3} \mathrm{PO}_{4} \)

Solution:
This is one type of dehydration reaction, in which proton attacks on the hydroxy group alcohol and water gets removed. Later, carbocation is formed which forms alkene by the removal of proton. As shown below:

Topic: Chemistry, Hydrocarbons, JEE Main
Which is the correct ascending order of wavelengths?

Options:
A λvisible <λX-ray<λgamma-ray <λmicrowave
B λgamma-ray <λX-ray<λvisible <λmicrowave
C λX-ray<λgamma-ray <λvisible <λmicrowave
D λmicrowave <λvisible <λgamma-ray <λX-ray

The correct answer is:
λgamma-ray <λX-ray<λvisible <λmicrowave

Solution:
We know that E=hcλ⇒E∝1λ. Also,

Egamma-ray>EX-ray>Evisible>Emicrowave

Therefore,

λgamma-ray<λX-ray<λvisible<λmicrowave

Topic: Physics, Electromagnetic Waves, JEE Main, JEE Main 2022 (26 Jun Shift 2)
Which is the correct definition of thermosetting polymer with an example?

Options:
A Thermosetting polymers are materials that remain soft and pliable even at high temperatures like BUNA-N.
B Thermosetting polymers are polymers that can be repeatedly melted and reshaped without degradation like polyethene.
C Thermosetting polymers are polymers that, once molded and cured, cannot be re-melted or reshaped without undergoing chemical decomposition like bakelite
D Thermosetting polymers are polymers that remain liquid at room temperature like teflon

The correct answer is:
Thermosetting polymers are polymers that, once molded and cured, cannot be re-melted or reshaped without undergoing chemical decomposition like bakelite

Solution:
Correct Option is : (C)
Thermosetting polymers are polymers that, once molded and cured, cannot be re-melted or reshaped without undergoing chemical decomposition like bakelite

Topic: Chemistry, Polymers, NEET
Which is the correct IUPAC name of this compound?

Options:
A 6-ethyl-3-(1-methylbutyl)-4,6-octadien-1-yne
B 3,4-diethyl-5-methyl-1,4-hexadiene
C 2-cyclopentyl propene
D 1-(1-methylcyclopropyl)-2-(2-methylcyclopropyl) cyclopropene

The correct answer is:
3,4-diethyl-5-methyl-1,4-hexadiene

Solution:
3,4-diethyl-5-methyl-1,4-hexadiene

Topic: Chemistry, General Organic Chemistry, JEE Main