datavorous/entrance-exam-dataset huggingface dataset:
Which of the following relation is correct?

Options:
A |a+b| $\le $ |a| + |b|
B |a+b| $\ge $ |a| + |b|
C |a+b| $\le $ ||a| −|b||
D |a−b| $\ge $ |a| + |b|

The correct answer is:
|a+b| $\le $ |a| + |b|

Solution:
Correct Option is : (A)
|a+b| $\le $ |a| + |b|

Topic: Chemistry, Motion In Two Dimensions, NEET
Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?

Options:
A $P^{1-\gamma} T \gamma=$ constant
B $\mathrm{PV}=$ constant
C $T W^{-1}=$ constant
D $P^{\prime} T^{1-\gamma}=$ constant

The correct answer is:
$P^{\prime} T^{1-\gamma}=$ constant

Solution:
Adiabatic process $\rightarrow$ Heat does not exchange between system surrounding
and eq. is $\mathrm{PV}^\gamma=$ constant
Ideal gas $P V=n R T$
$P=\frac{n R T}{V}=\frac{n R T}{V} \quad \mathrm{~V}^\gamma=$ const
$\mathrm{TV}^{\gamma-1}=$ constant
Again $\quad P V=n R T$
$V=\frac{n R T}{P}$ Pulley in eq. (i)
$P\left(\frac{n R T}{P}\right)^\gamma=$ constant
$P^{1-\gamma} \mathrm{T}^\gamma=$ constant...(iii)
So, option (d) does not give the relation.

Topic: Physics, Thermodynamics, NEET, NEET 2013 (Karnataka)
Which of the following relations gives the value of n =

Options:
A MoleculerMassAtomicMass
B MolecularMassEmpiricalMass
C EmpiricalMassMolecularMass
D None of these

The correct answer is:
MolecularMassEmpiricalMass

Solution:
n=Molecular massEmperical mass

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
Which of the following relationship when graphed does not give a straight line for helium gas?
I. KE vs T at constant P and V
II. P vs V at constant T and n
III. V vs 1T at constant P and n

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

The correct answer is:
II and III

Solution:
Graph of P vs V at constant T is a rectangular hyperbola.
Graph of V vs 1T at constant P and n is a rectangular hyperbola.

Topic: Chemistry, States of Matter, NEET
Which of the following relationships between the acceleration a and the displacement x of a particle involve simple harmonic motion?

Options:
A a = 0.7x
B a = –200${{x}^{2}}$
C a = –10x
D a = 100${{x}^{3}}$

The correct answer is:
a = –10x

Solution:
Correct Option is : (C)
a = –10x

Topic: Chemistry, Oscillations, NEET
Which of the following represent maximum number of species among global biodiversity?

Options:
A Algae
B Lichens
C Fungi
D Mosses and ferns

The correct answer is:
Fungi

Solution:
The following figure shows global biodiversity of fungi, mosses, ferns, algae, lichens and angiosperms.

Topic: Biology, Biodiversity and its Conservation, NEET, NEET 2013 (All India)
Which of the following represent the anatomical and structural unit of muscle, respectively?

Options:
A

Anatomical unit	Structural unit

Muscle fibre	Sarcomere

B

Anatomical unit	Structural unit

Myofibril	Sarcomere

C

Anatomical unit	Structural unit

Myofibril	Muscle fibre

D

Anatomical unit	Structural unit

Sarcomere	Muscle fibre

The correct answer is:

Anatomical unit	Structural unit

Muscle fibre	Sarcomere

Solution:
Muscle is an organ that contracts and helps in movement. The anatomical unit or structural unit of a muscle is a single muscle cell. Since it is thin and long, it is also called muscle fibre. The functional unit or contractile unit of muscle is a sarcomere present in the myofibril within a muscle fibre. It is the distance between two consecutive Z lines.

Topic: Biology, Locomotion and Movement, NEET
Which of the following represent the cosolvating effect?

Options:
A The acidic strength HF increases in the presence of BF3
B The acidity of NH4+ is enhanced in the presence of Cu2+
C The acidity of H3BO3 is increased in the presence of glycerol
D All of the given are examples of cosolvating effect

The correct answer is:
All of the given are examples of cosolvating effect

Solution:
cosolvating effect is a substance added to primary solvent in small amount in order to increase solubility of partialy soluble compounds. Here all statements are correct based on cosolvating effect.

Topic: Chemistry, Ionic Equilibrium, NEET
Which of the following represent the examples of stem and leaf tendril, respectively?

Options:
A Peas and Pumpkin
B Acacia and Cucumber
C Peas and Cucumber
D Cucumber and Peas

The correct answer is:
Cucumber and Peas

Solution:
Stem tendrils which develop from axillary buds are slender and spirally coiled and help plants to climb such as in gourds (cucumber, pumpkins, watermelon) and grapevines. Leaves are converted into tendrils for climbing as in peas or into spines for defence as in cacti.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following represents ‘2,2-dimethylpropane’?

Options:
A Isobutane
B Neobutane
C Neopentane
D isopentane

The correct answer is:
isopentane

Solution:
Correct Option is : 4
isopentane

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following represents Cm?

Options:
A Californium
B Curium
C Actinium
D Nobelium

The correct answer is:
Curium

Solution:
Correct Option is : 2
Curium

Topic: Chemistry, d and f Block Elements, NEET
Which of the following represents correct no. of atomic orbitals present and hybridisation of PF5?

Options:
A 4,Sp3d
B 4,dsp2
C 5,Sp3d
D 5,Sp3d2

The correct answer is:
5,Sp3d

Solution:
Correct Option is : 3
5,Sp3d

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following represents correctly the variation of degree of adsorption against temperature for physical adsorption?

Options:
A
B
C
D

The correct answer is:

Solution:
Degree of physical adsorption decreases exponentially with increase in temperature so the correct graph is given below

Topic: Chemistry, Surface Chemistry, NEET
Which of the following represents green colour?

Options:
A [CoCl2(NH3)4]+Cl–
B [CoCl(NH3)5]2+2Cl–
C [Co(NH3)6]3+3Cl–
D [CoCl3(NH3)3]

The correct answer is:
[CoCl2(NH3)4]+Cl–

Solution:
Correct Option is : 1
[CoCl2(NH3)4]+Cl–

Topic: Chemistry, Coordination Compounds, NEET
Which of the following represents physical adsorption?

Options:
A
B
C
D

The correct answer is:

Solution:
The physical adsorption isobar shows a decrease in x/m throughout with rise in temperature.

Topic: Chemistry, Surface Chemistry, NEET
Which of the following represents purple colour?

Options:
A [CoCl3(NH3)3]
B [CoCl2(NH3)4]+Cl–
C [CoCl(NH3)5]2+2Cl–
D [Co(NH3)6]3+3Cl–

The correct answer is:
[CoCl(NH3)5]2+2Cl–

Solution:
Correct Option is : 3
[CoCl(NH3)5]2+2Cl–

Topic: Chemistry, Coordination Compounds, NEET
Which of the following represents the action of insulin?

Options:
A Increases blood glucose level by stimulating glucagon production.
B Decreases blood glucose levels by forming glycogen.
C Increases blood glucose levels by promoting cellular uptake of glucose.
D Increases blood glucose levels by hydrolysis of glycogen.

The correct answer is:
Decreases blood glucose levels by forming glycogen.

Solution:
Insulin is released by the ' $\beta$ cells' in the islets of Langerhans in response to food. Its role is to lower glucose levels in the bloodstream and promote the storage of glucose in fat, muscle, liver and other body tissues. ' $\alpha$ cells' in the islets of Langerhans produce another important hormone, glucagon, which increase blood sugar levels.
Related Theory
Type I diabeles is an autoimmune reaction that attacks cells in pancreas that produce insulin and is caused by inherited genetics or environmental elements. Type 2 diabetes happens when body becomes resistant to insulin and is associated with genetics and lifestyle choice.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2013 (Karnataka)
Which of the following represents the balanced chemical equation for the catalytic oxidation of NH3 by atmospheric oxygen at 500K and 9 bar using a Pt/Rh gauge catalyst?

Options:
A 4NH3+ 3O2→ 2N2+ 6H2O
B 2NH3+ 5O2→ 3N2+ 6H2O
C 4NH3+ 5O2→ 4NO + 6H2O
D 3NH3+ 4O2→ 2NO + 6H2O

The correct answer is:
4NH3+ 5O2→ 4NO + 6H2O

Solution:
Correct Option is : (C)
4NH3+ 5O2→ 4NO + 6H2O

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following represents the characteristics of the entomophilous flower?

Options:
A Nectarless, odourless and coloured
B

Colourful, fragrant and nectar rich

C Coloured, fragrant and nectarless
D Coated by a waxy layer

The correct answer is:

Colourful, fragrant and nectar rich

Solution:
Characteristics of entomophilous flower:
1. Flowers are larger, brightly coloured and produce pleasant fragrance.
2. Flowers are more conspicuous.
3. Smaller flowers are produced in compact groups called inflorescence.
4. Flowers pollinated by bees are usually blue, purple or yellow. The flowers pollinated by butterflies are most often red.
5. Flowers secrete nectar which makes positive attraction to the insects like bees.
6. The pollens of insect pollinating flowers are sticky and spiny (echinulate).

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following represents the correct events of a cardiac cycle beginning from the firing of an impulse from the pacemaker of the heart?

Options:
A
B
C
D

The correct answer is:

Solution:
When the SA node fires impulse, it reaches the atria and they contract for 0.1 sec. During this interval, the impulse has not reached the ventricles so they are still relaxing. After 0.1 seconds, the impulse reaches the ventricles and they contract for 0.3 seconds. Atria are now relaxing during this phase. After this ventricles will relax. Thus the correct graph is C

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following represents the correct force acting on a charge Q (having the same sign as q) positioned at the centroid of an equilateral triangle formed by three charges q1, q2, and q3, each equal to q, and each side of length l?

Options:
A Attraction toward the centroid.
B Repulsion away from the centroid.
C No force acting on it.
D The force depends on the value of Q.

The correct answer is:
No force acting on it.

Solution:
Correct Option is : (C)
No force acting on it.

Topic: Chemistry, Electrostatics, NEET
Which of the following represents the correct IUPAC name for the compounds concerned? (i) 2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane and (ii) But-3-yn-1-ol or But-4-ol-1-yne

Options:
A (i) 4-Chloro-2-methylpentane and (ii) But-3-yn-1-ol
B (i) 4-Chloro-2-methylpentane and (ii) But-4-ol-1-yne
C (i) 2-Chloro-4-methylpentane and (ii) But-4-ol-1-yne
D (i) 2-Chloro-4-methylpentane and (ii) But-3-yn-1-ol

The correct answer is:
(i) 2-Chloro-4-methylpentane and (ii) But-3-yn-1-ol

Solution:
Correct Option is : (D)
(i) 2-Chloro-4-methylpentane and (ii) But-3-yn-1-ol

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following represents the correct IUPAC name for the compounds concerned? (i) 2,2-Dimethylpentane or 2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane or 2,5,7-Trimethyloctane

Options:
A (i) 2-Dimethylpentane and (ii) 2,5,7-Trimethyloctane
B (i) 2,2-Dimethylpentane and (ii) 2,5,7-Trimethyloctane
C (i) 2,2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane
D (i) 2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane

The correct answer is:
(i) 2,2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane

Solution:
Correct Option is : (C)
(i) 2,2-Dimethylpentane and (ii) 2,4,7- Trimethyloctane

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following represents the correct magnitude and direction of the net force acting on a kite skillfully held stationary in the sky?

Options:
A Zero magnitude and no direction
B Non-zero magnitude and upward direction
C Non-zero magnitude and downward direction
D Non-zero magnitude and horizontal direction

The correct answer is:
Zero magnitude and no direction

Solution:
Correct Option is : (A)
Zero magnitude and no direction

Topic: Chemistry, Laws of Motion, NEET
Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements $\mathrm{O}, \mathrm{S}, \mathrm{F}$ and $\mathrm{Cl}$ ?

Options:
A $\mathrm{Cl} < \mathrm{F} < \mathrm{O} < \mathrm{S}$
B $\mathrm{O} < \mathrm{S} < \mathrm{F} < \mathrm{Cl}$
C F $ < $ S $ < \mathrm{O} < \mathrm{Cl}$
D S $ < \mathrm{O} < \mathrm{Cl} < \mathrm{F}$

The correct answer is:
$\mathrm{O} < \mathrm{S} < \mathrm{F} < \mathrm{Cl}$

Solution:
Key Idea:- Electron gain enthalpy, generally, increases in a period from left to right and decreases in a group on moving downwards. However, members of III period have somewhat higher electron gain enthalpy as compared to the corresponding members of second period, because of their small size.
$\mathrm{O}$ and $\mathrm{S}$ belong to VI A (16) group and $\mathrm{Cl}$ and $\mathrm{F}$ belong to VII A (17) group. Thus, the electron gain enthalpy of $\mathrm{Cl}$ and $\mathrm{F}$ is higher as compared to $\mathrm{O}$ and $\mathrm{S}$.
$\mathrm{Cl}$ and $\mathrm{F}>\mathrm{O}$ and $\mathrm{S}$
Between $\mathrm{Cl}$ and $\mathrm{F}, \mathrm{Cl}$ has higher electron gain enthalpy as in $\mathrm{F}$, the incoming electron experiences a greater force of repulsion because of small size of $\mathrm{F}$ atom. Similar is true in case of $O$ and $S$ ie, the electron gain enthalpy of $S$ is higher as compared to $O$ due to its small size. Thus, the correct order of electron gain enthalpy of given elements is
$$
\mathrm{O} < \mathrm{S} < \mathrm{F} < \mathrm{Cl}
$$

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET, NEET 2010 (Screening)
Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

Options:
A S < O < Cl < F
B Cl < F < O < S
C O < S < F < Cl
D F < S < O < Cl

The correct answer is:
O < S < F < Cl

Solution:
Here electron gain enthalpy follows the order Cl > F > S > O.
The value is less in case of F and O- atoms due to their smaller sizes and more electronic density, there is e--e- repulsion which makes addition of e- difficult.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

Options:
A Ca < Ba < S < Se < Ar
B S < Se < Ca < Ba < Ar
C Ba < Ca < Se < S < Ar
D Ca < S < Ba < Se < Ar

The correct answer is:
Ba < Ca < Se < S < Ar

Solution:
On moving left to right ionisation energy increases as size decreases and on moving top to bottom in a group, size increases. So ionisation energy decreases.
Hence order of increasing first ionisation enthalpy i.e., ΔHIE1 is Ba < Ca < Se < S < Ar

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following represents the correct order of the acidity in the given compounds?

Options:
A $\mathrm{FCH}_2 \mathrm{COOH}>\mathrm{CH}_2 \mathrm{COOH}> \mathrm{BrCH}_2 \mathrm{COOH}>\mathrm{ClCH}_2 \mathrm{COOH}$
B $\mathrm{BrCH}_2 \mathrm{COOH}>\mathrm{ClCH}_2 \mathrm{COOH}> \mathrm{FCH}_2 \mathrm{COOH}>\mathrm{CH}_3 \mathrm{COOH}$
C $\mathrm{FCH}_2 \mathrm{COOH}>\mathrm{ClCH}_2 \mathrm{COOH}> \mathrm{BrCH}_2^2 \mathrm{COOH}>\mathrm{CH}_3 \mathrm{COOH}$
D $\mathrm{CH}_3 \mathrm{COOH}>\mathrm{BrCH}_2 \mathrm{COOH}> \mathrm{ClCH}_2 \mathrm{COOH}>\mathrm{FCH}_2 \mathrm{COOH}$

The correct answer is:
$\mathrm{FCH}_2 \mathrm{COOH}>\mathrm{CH}_2 \mathrm{COOH}> \mathrm{BrCH}_2 \mathrm{COOH}>\mathrm{ClCH}_2 \mathrm{COOH}$

Solution:
Electron withdrawing substituent increases the acidity by increasing the ionic character of $-\mathrm{OH}$ by inductive effect. Electronegativity decreases in the order.
$\mathrm{F}>\mathrm{Cl}>\mathrm{Br}$
-I effect also decreases in the same order. Thus, the correct sequence is
$\begin{aligned}
& \mathrm{FCH}_2 \mathrm{COOH}>\mathrm{ClCH}_2 \mathrm{COOH}> \\
& \mathrm{BrCH}_2 \mathrm{COOH}>\mathrm{CH}_3 \mathrm{COOH}
\end{aligned}$
Related Theory
I effect is a permanent effect & generally represented by an arrow on the bond.

Topic: Chemistry, General Organic Chemistry, NEET, NEET 2007
Which of the following represents the correct oxidation number of each sulfur atom in the compound Na2S2O3?

Options:
A +2
B -2
C +4
D -1

The correct answer is:
+2

Solution:
Correct Option is : (A)
+2

Topic: Chemistry, Redox Reactions, NEET
Which of the following represents the correct oxidation number of each sulfur atom in the compound Na2SO3?

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

The correct answer is:
+4

Solution:
Correct Option is : (C)
+4

Topic: Chemistry, Redox Reactions, NEET
Which of the following represents the correct sequence of energy levels in the nitrogen molecule (N2) in increasing order of energy?

Options:
A σ2pz < π2px < π2py
B π2px < σ2pz < π2py
C π2px < π2py = σ2pz
D σ2pz > π2py = π2px

The correct answer is:
σ2pz > π2py = π2px

Solution:
Correct Option is : (D)
σ2pz > π2py = π2px

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following represents the correct shape of ClF3molecules?

Options:
A Square pyramid
B Square planar
C See-Saw
D T-Shape

The correct answer is:
T-Shape

Solution:
Correct Option is : 4
T-Shape

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following represents the edible part of the fruit of litchi?

Options:
A mesocarp
B endocarp
C pericarp
D juicy aril.

The correct answer is:
juicy aril.

Solution:
Litchi is a nut type simple fruit. When a single fruit develops from a single ovary of a single flower, it is called a simple fruit. An aril which is a specialized outgrowth from a seed that partly or completely covers the seed is the edible part of litchi.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2005
Which of the following represents the edible part of the fruit of litchi?

Options:
A Mesocarp
B Endocarp
C Pericarp
D Aril

The correct answer is:
Aril

Solution:
In litchi, aril forms the edible part in fruit. It is a collar like outgrowth from the base of the ovule forming a kind of third integument. Litchi is a nut. In litchi, the epicarp and mesocarp (layers of pericarp) together become leathery and the endocarp is membranous.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following represents the electric field just outside a spherical conductor of radius 12 cm with a uniformly distributed charge of 1.6 × 10⁻⁷C on its surface?

Options:
A 0.1 × 10⁶ N/C
B 3.6 × 10⁷ N/C
C 2.0 × 10⁷ N/C
D 4.8 × 10⁶ N/C

The correct answer is:
0.1 × 10⁶ N/C

Solution:
Correct Option is : (A)
0.1 × 10⁶ N/C

Topic: Chemistry, Capacitance, NEET
Which of the following represents the electric flux passing through a spherical Gaussian surface with a radius of 20.0 cm (doubled from the original 10.0 cm radius) centered on the point charge causing an electric flux of -1.0 × ${{10}^{3}}$ N${{m}^{2}}$/C to pass through it?

Options:
A -2.0 × ${{10}^{3}}$N${{m}^{2}}$/C
B -5.0 × ${{10}^{3}}$ N${{m}^{2}}$/C
C -4.0 × ${{10}^{3}}$N${{m}^{2}}$/C
D -1.0 × ${{10}^{3}}$N${{m}^{2}}$/C

The correct answer is:
-1.0 × ${{10}^{3}}$N${{m}^{2}}$/C

Solution:
Correct Option is : (D)
-1.0 × ${{10}^{3}}$N${{m}^{2}}$/C

Topic: Chemistry, Electrostatics, NEET
Which of the following represents the entire universe in thermodynamics?

Options:
A The system and the surroundings
B Only the system
C Only the surroundings
D The universe is not defined in thermodynamics

The correct answer is:
The system and the surroundings

Solution:
In thermodynamics, the universe consists of both the system and the surroundings.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following represents the floral characters of Liliaceae?

Options:
A Six tepals, zygomorphic, six stamens, bilocular ovary, axile placentation
B Tetramerous, actinomorphic, polyphyllous, unilocular ovary, axile placentation
C Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation
D Bisexual, zygomorphic, gomophyllous, inferior ovary, axile placentation

The correct answer is:
Trimerous, actinomorphic, polyandrous, superior ovary, axile placentation

Solution:
The flower in family-Liliaceae I complete, actinomorphic, trimerous, hypogynous and the gynoecium is tricarpellary, syncarpous having superior ovary with axile placentation.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following represents the force acting on the box down the plane when the angle of inclination of the plane is increased to α > θ?

Options:
A mg sinα +µmgcos α
B mg sinα * µmgcos α
C mg sinα /µmgcos α
D mg sinα -µmgcos α

The correct answer is:
mg sinα -µmgcos α

Solution:
Correct Option is : (D)
mg sinα -µmgcos α

Topic: Chemistry, Laws of Motion, NEET
Which of the following represents the magnitude and direction of the net force acting on a 0.1 kg stone just after it is dropped from a window of a train running at a constant velocity of 36 km/h?

Options:
A 0 N, upward
B 0 N, downward
C 1 N, downward
D 1 N, upward

The correct answer is:
0 N, downward

Solution:
Correct Option is : (B)
0 N, downward

Topic: Chemistry, Laws of Motion, NEET
Which of the following represents the order of 'Horse'?

Options:
A Equidae
B Perissodactyla
C Caballus
D Ferus

The correct answer is:
Perissodactyla

Solution:
The horse belongs to order Perissodactyla of class Mammalia. Perissodactyla includes odd-toed mammals.
Ex- Guus asinus (donkey), Rhinoceros indicus (the great one-horned rhinoceros).
Equidae is the taxonomic family of horses and related animals. Caballus is the species name of horses. Equus ferus caballus is one of two extant subspecies of Equus ferus. Equidae is the taxonomic family of horses and related animals.

Topic: Biology, Evolution, NEET, NEET 2017
Which of the following represents the oxidation number of copper in [Cu(CN)4]2–?

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

The correct answer is:
Cu(I)

Solution:
The oxidation number of copper in[Cu(CN)4]2– is represented as Cu(I).

Topic: Chemistry, Coordination Compounds, NEET
Which of the following represents the sign of the velocity of point P', the projection of the velocity of the reference particle P, moving in an anticlockwise direction in a circle of radius R, as shown in Fig. 14.9?

Options:
A +ve
B -ve
C 0
D Not determinable without additional information

The correct answer is:
-ve

Solution:
Correct Option is : (B)
-ve

Topic: Chemistry, Oscillations, NEET
Which of the following represents the true colour of [Cu(H2O)4]2+coordination compound?

Options:
A Red
B Blue green
C Yellow
D Blue

The correct answer is:
Blue

Solution:
Correct Option is : 4
Blue

Topic: Chemistry, Coordination Compounds, NEET
Which of the following represents uridylic acid?

Options:
A Uracil + Ribose
B Uridine + Phosphoric acid
C Uracil + Phosphoric acid
D Uridine + Ribose + Phosphoric acid

The correct answer is:
Uridine + Ribose + Phosphoric acid

Solution:
Living organisms have a number of carbon compounds in which heterocyclic rings can be found. Some of these are nitrogen bases â adenine, guanine, cytosine, uracil, and thymine. When found attached to a sugar, they are called nucleosides. If a phosphate group is also found esterified to the sugar they are called nucleotides. Adenosine, guanosine, thymidine, uridine and cytidine are nucleosides. Adenylic acid, thymidylic acid, guanylic acid, uridylic acid and cytidylic acid are nucleotides. Nucleic acids like DNA and RNA consist of nucleotides only. DNA and RNA function as genetic material.
Uridine is specifically found in RNA. Uridylic acid is a nucleoside of uridine formed in the hydrolysis of RNA.

Topic: Chemistry, Biomolecules, NEET
Which of the following reproductive structure is divided into cortex and medulla?

Options:
A Uterus
B Placenta
C Oviduct
D Ovary

The correct answer is:
Ovary

Solution:
Ovaries are the primary sex organs in female. Each ovary is covered by a thin epithelium which encloses the ovarian stroma. The ovarian stroma is divided into two zones- a peripheral cortex and an inner medulla.
Ovarian cortex contain large number of ovarian follicles.

Topic: Biology, Human Reproduction, NEET
Which of the following reptiles is the most current ancestor of modern mammals?

Options:
A Therapsid
B Plecosaurs
C Sauropsids
D Synapsid

The correct answer is:
Therapsid

Solution:
According to the geological time scale provided, therapsids are the closest relatives of the modern mammals, appearing about 150 million years ago during the Jurrasic period.

Topic: Biology, Evolution, NEET