datavorous/entrance-exam-dataset huggingface dataset:
Quercus species are the dominant component in

Options:
A temperate deciduous forests
B alpine forests
C scrub forests
D tropical rain forests

The correct answer is:
temperate deciduous forests

Solution:
Temperate deciduous forests grow in continental climates with summer rainfall and severe winters. They are dominated by broad leaved deciduous trees like Quercus virginiana, magnolias, boys and hallies as well as such tropical species as Ficus aurea, Lysiloma.
Tropical rain forests occupy low altitude zones near the equator where annual rainfall exceeds $80^{\prime \prime}$ to $90^{\prime \prime}$ distributed over the year. Trees generally form three storeys scattered very tall emergent trees, canopy layer and understorey stratum.
Tropical scrub forests develop in areas where moisture relations are intermediate between desert and savanna on one hand and rainforest on other.

Topic: Biology, Ecosystem, NEET, NEET 2008 (Screening)
Question: A 12pF capacitor is connected to a 50V battery. How much electrostatic energy is stored in the capacitor

Options:
A 15 joules
B 1.5$\times {{10}^{-8}}$ joules
C 0.015$\times {{10}^{-8}}$ joules
D 0.0015$\times {{10}^{-8}}$ joules

The correct answer is:
1.5$\times {{10}^{-8}}$ joules

Solution:
Correct Option is : (B)
1.5$\times {{10}^{-8}}$ joules

Topic: Chemistry, Capacitance, NEET
Question: A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m/s, what is the recoil speed of the gun?

Options:
A 0.00016 m/s
B 0.016 m/s
C 16 m/s
D 160 m/s

The correct answer is:
0.016 m/s

Solution:
Correct Option is : (B)
0.016 m/s

Topic: Chemistry, Laws of Motion, NEET
Question: "An object of size 3.0cm is placed 14cm in front of a concave lens of focal length 21cm. Where is the image formed?"

Options:
A 12.6cm
B 8.4cm
C 16.8cm
D 4.2cm

The correct answer is:
8.4cm

Solution:
Correct Option is : (B)
8.4cm

Topic: Chemistry, Ray Optics, NEET
Question: Did Sachin Tendulkar's use of a heavy cricket bat help him in any way?

Options:
A No, it had no impact on his performance.
B Yes, it increased the velocity of the ball when he hit it.
C No, it hindered his ability to score.
D Yes, it made him a better batsman.

The correct answer is:
Yes, it increased the velocity of the ball when he hit it.

Solution:
Correct Option is : (B)
Yes, it increased the velocity of the ball when he hit it.

Topic: Chemistry, Kinetic Theory of Gases, NEET
Question: Does every magnetic configuration necessarily have both a north pole and a south pole?

Options:
A Yes, always.
B No, not necessarily.
C Only if the source has a net non-zero magnetic moment.
D Only in the absence of external influences.

The correct answer is:
Only if the source has a net non-zero magnetic moment.

Solution:
Correct Option is : (C)
Only if the source has a net non-zero magnetic moment.

Topic: Chemistry, Magnetic Properties of Matter, NEET
Question: How is it possible to obtain large amounts of current in a conductor despite the electron drift speed being so small and the electron's charge being small? Options:

Options:
A By increasing the number of electrons in the conductor
B By increasing the length of the conductor
C By decreasing the resistance of the conductor
D By increasing the voltage applied to the conductor

The correct answer is:
By increasing the number of electrons in the conductor

Solution:
Correct Option is : (A)
By increasing the number of electrons in the conductor

Topic: Chemistry, Current Electricity, NEET
Question: If the lower half of a concave mirror's reflecting surface is covered with an opaque (non-reflective) material, what effect will this have on the image of an object placed in front of the mirror?

Options:
A The image will show only half of the object.
B The image will be that of the whole object.
C The image will disappear entirely.
D The image will be distorted and incomplete.

The correct answer is:
The image will be that of the whole object.

Solution:
Correct Option is : (B)
The image will be that of the whole object.

Topic: Chemistry, Ray Optics, NEET
Question: In a Cassegrain telescope, which employs two mirrors has the mirrors placed 20mm apart, what is the location of the final image for an object at infinity if the radius of curvature of the large mirror is 220mm and the small mirror is 140mm?

Options:
A The final image is formed at 315mm from the larger mirror.
B The final image is formed at 315mm from the smaller mirror.
C The final image is formed at 360mm from the larger mirror.
D The final image is formed at 360mm from the smaller mirror.

The correct answer is:
The final image is formed at 315mm from the smaller mirror.

Solution:
Correct Option is : (B)
The final image is formed at 315mm from the smaller mirror.

Topic: Chemistry, Ray Optics, NEET
Question: In a hypothetical alpha-particle scattering experiment using a thin sheet of solid hydrogen instead of gold foil, what is the expected outcome?

Options:
A Alpha particles will not experience large-angle scattering.
B Alpha particles will experience large-angle scattering.
C Alpha particles will bounce back in a head-on collision.
D The results will be the same as with the gold foil.

The correct answer is:
Alpha particles will not experience large-angle scattering.

Solution:
Correct Option is : (A)
Alpha particles will not experience large-angle scattering.

Topic: Chemistry, Atomic Physics, NEET
Question: In a uniform electric field E = 3 × ${{10}^{3}}$ î N/C, what is the net flux through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

Options:
A 0
B 9.0 × ${{10}^{2}}$N${{m}^{2}}$/C
C 1.2 × ${{10}^{3}}$ N${{m}^{2}}$/C
D 1.5 × ${{10}^{3}}$ N${{m}^{2}}$/C

The correct answer is:
0

Solution:
Correct Option is : (A)
0

Topic: Chemistry, Electrostatics, NEET
Question: In an elastic collision of two bodies, what is conserved?

Options:
A Momentum and energy of each body
B Only momentum of each body
C Only energy of each body
D Neither momentum nor energy of each body

The correct answer is:
Momentum and energy of each body

Solution:
Correct Option is : (A)
Momentum and energy of each body

Topic: Chemistry, Work Power Energy, NEET
Question: In the given scenario, where a 3m long ladder weighing 20 kg leans on a frictionless wall with its feet resting on the floor 1 m from the wall, what are the reaction forces acting on the wall and the floor?

Options:
A Wall: 20.9 N, Floor: 60 N
B Wall: 20.9 N, Floor: 199 N
C Wall: 34.6 N, Floor: 199 N
D Wall: 34.6 N, Floor: 60 N

The correct answer is:
Wall: 34.6 N, Floor: 199 N

Solution:
Correct Option is : (C)
Wall: 34.6 N, Floor: 199 N

Topic: Chemistry, Rotational Motion, NEET
Question: In Young’s double-slit experiment using monochromatic light of wavelength λ, the intensity of light at a point on the screen where the path difference is λ, is K units. What is the intensity of light at a point where the path difference is λ/3?

Options:
A K/9
B K/3
C K/4
D K/12

The correct answer is:
K/4

Solution:
Correct Option is : (C)
K/4

Topic: Chemistry, Wave Optics, NEET
Question: Monochromatic light of frequency 6.0 ×1014Hz is produced by a laser. The power emitted is 2.0 ×10–3W. How many photons per second, on average, are emitted by the source?

Options:
A 1.0 ×1014photons per second.
B 2.0 ×1015photons per second.
C 3.0×1015photons per second.
D 5.0 ×1015photons per second.

The correct answer is:
5.0 ×1015photons per second.

Solution:
Correct Option is : (D)
5.0 ×1015photons per second.

Topic: Chemistry, Dual Nature of Matter, NEET
Question: "Two charges 5 × ${{10}^{-8}}$ C and –3 × ${{10}^{-8}}$C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero?

Options:
A 10 cm from the 5 × ${{10}^{-8}}$ C charge
B 12 cm from the 5 ×${{10}^{-8}}$ C charge
C 8 cm from the 5 × ${{10}^{-8}}$ C charge
D 16 cm from the 5 × ${{10}^{-8}}$ C charge

The correct answer is:
10 cm from the 5 × ${{10}^{-8}}$ C charge

Solution:
Correct Option is : (A)
10 cm from the 5 × ${{10}^{-8}}$ C charge

Topic: Chemistry, Capacitance, NEET
Question: What are the radii of the n = 2 orbit of a hydrogen atom with the innermost electron orbit radius being 5.3×10–11m?

Options:
A 1.06×10–10m;
B 2.12×10–10m;
C 4.24×10–10m;
D 8.48×10–10m;

The correct answer is:
2.12×10–10m;

Solution:
Correct Option is : (B)
2.12×10–10m;

Topic: Chemistry, Atomic Physics, NEET
Question: What are the radii of the n = 3 orbit for a hydrogen atom, given that the radius of the innermost electron orbit is 5.3×10–11m?

Options:
A 6.32×10–10m
B 7.21×10–10m
C 8.93×10–10m
D 4.77×10–10m

The correct answer is:
4.77×10–10m

Solution:
Correct Option is : (D)
4.77×10–10m

Topic: Chemistry, Atomic Physics, NEET
Question: What is the charge on each capacitor when three capacitors of capacitances 2 pF, 3 pF, and 4 pF are connected in parallel and then connected to a 100 V supply? Options:

Options:
A 22 × ${{10}^{-10}}$C, 3 × ${{10}^{-10}}$C, 4 × ${{10}^{-9}}$C
B 2 × ${{10}^{-10}}$ C, 3 × ${{10}^{-9}}$C, 4 × ${{10}^{-10}}$ C
C 2 × ${{10}^{-10}}$ C, 3 × ${{10}^{-10}}$C, 4 × ${{10}^{-10}}$C
D 2 × ${{10}^{-9}}$ C, 3 × ${{10}^{-10}}$ C, 4 × ${{10}^{-10}}$ C

The correct answer is:
2 × ${{10}^{-10}}$ C, 3 × ${{10}^{-10}}$C, 4 × ${{10}^{-10}}$C

Solution:
Correct Option is : (C)
2 × ${{10}^{-10}}$ C, 3 × ${{10}^{-10}}$C, 4 × ${{10}^{-10}}$C

Topic: Chemistry, Capacitance, NEET
Question: What is the combined focal length of a convex lens with a focal length of 30 cm in contact with a concave lens with a focal length of 20 cm?

Options:
A 60 cm
B 50 cm
C 10 cm
D -10 cm

The correct answer is:
60 cm

Solution:
Correct Option is : (A)
60 cm

Topic: Chemistry, Ray Optics, NEET
Question: What is the correct setup for a compound microscope when a 30X angular magnification is desired, using an objective with a focal length of 1.25 cm and an eyepiece with a focal length of 5 cm?

Options:
A The separation between the objective and the eyepiece should be 7.5 cm.
B The separation between the objective and the eyepiece should be 11.67 cm.
C The object should be placed 5.5 cm from the objective.
D The object should be placed 11.67 cm from the objective.

The correct answer is:
The separation between the objective and the eyepiece should be 11.67 cm.

Solution:
Correct Option is : (B)
The separation between the objective and the eyepiece should be 11.67 cm.

Topic: Chemistry, Ray Optics, NEET
Question: What is the direction of the electric field at every point on the surface formed by placing two charges, 2 mC at point A and -2 mC at point B, 6 cm apart? Options:

Options:
A The electric field points from point A to point B.
B The electric field points from point B to point A.
C The electric field is zero on this surface.
D Normal to the plane in the direction AB.

The correct answer is:
Normal to the plane in the direction AB.

Solution:
Correct Option is : (D)
Normal to the plane in the direction AB.

Topic: Chemistry, Capacitance, NEET
Question: What is the force between two small charged spheres having charges of 2 × 10–7C and 3 × ${{10}^{-7}}$C placed 30 cm apart in air?

Options:
A 8 × ${{10}^{-7}}$N
B 6 × ${{10}^{-7}}$ N
C 8 × ${{10}^{-7}}$N
D 6 × ${{10}^{-7}}$ N

The correct answer is:
6 × ${{10}^{-7}}$ N

Solution:
Correct Option is : (B)
6 × ${{10}^{-7}}$ N

Topic: Chemistry, Electrostatics, NEET
Question: "What is the force on the second sphere due to the first when a small sphere of charge 0.4 mC exerts an electrostatic force of 0.2 N on another small sphere of charge –0.8 mC in air?"

Options:
A 0.1 N
B -0.1 N
C -0.2 N
D 0.4 N

The correct answer is:
-0.2 N

Solution:
Correct Option is : (C)
-0.2 N

Topic: Chemistry, Electrostatics, NEET
Question: What is the frequency of radiation emitted when an atom makes a transition from an energy level that is 2.3 eV higher to an energy level that is 2.3 eV lower?

Options:
A 3.8 × 1014Hz
B 5.6 × 1014Hz
C 1.2 × 1015Hz
D 7.1 × 1015Hz

The correct answer is:
5.6 × 1014Hz

Solution:
Correct Option is : (B)
5.6 × 1014Hz

Topic: Chemistry, Atomic Physics, NEET
Question: What is the height of the potential barrier for a head-on collision of two deuterons, assuming they can be treated as hard spheres of radius 2.0 fm? (Hint: The height of the potential barrier is determined by the Coulomb repulsion between the deuterons when they just touch each other.

Options:
A 360 eV
B 360 MeV
C 360 KeV
D 36 GeV

The correct answer is:
360 KeV

Solution:
Correct Option is : (C)
360 KeV

Topic: Chemistry, Nuclear Physics, NEET
Question: What is the kinetic energy of the electron in the ground state of a hydrogen atom with a ground state energy of -13.6 eV?

Options:
A -13.6 eV
B 0 eV
C 13.6 eV
D 27.2 eV

The correct answer is:
13.6 eV

Solution:
Correct Option is : (C)
13.6 eV

Topic: Chemistry, Atomic Physics, NEET
Question: What is the linear charge density of an infinite line charge that produces an electric field of 9 × ${{10}^{8}}$N/C at a distance of 2 cm?

Options:
A 20 uC/m
B 10 uC/m
C 16 uC/m
D 12 uC/m

The correct answer is:
10 uC/m

Solution:
Correct Option is : (B)
10 uC/m

Topic: Chemistry, Electrostatics, NEET
Question: What is the location of the center of mass for a uniform L-shaped lamina (thin flat plate) with dimensions as shown, where the mass of the lamina is 3 kg?

Options:
A $\frac{5}{6}$,$\frac{1}{6}$
B $\frac{1}{6}$,$\frac{5}{6}$
C $\frac{1}{6}$,$\frac{1}{6}$
D $\frac{5}{6}$,$\frac{5}{6}$

The correct answer is:
$\frac{5}{6}$,$\frac{5}{6}$

Solution:
Correct Option is : (D)
$\frac{5}{6}$,$\frac{5}{6}$

Topic: Chemistry, Rotational Motion, NEET
Question: What is the magnitude and direction of the net force acting on a cork of mass 10 g floating on water?

Options:
A The magnitude is zero, and the direction is upward.
B The magnitude is 0.01 N, and the direction is upward.
C The magnitude is 0.01 N, and the direction is downward.
D The magnitude is zero, and the direction is downward.

The correct answer is:
The magnitude is 0.01 N, and the direction is upward.

Solution:
Correct Option is : (B)
The magnitude is 0.01 N, and the direction is upward.

Topic: Chemistry, Laws of Motion, NEET
Question: What is the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed?

Options:
A The magnitude is zero, and the direction is upward.
B The magnitude is nonzero, and the direction is downward.
C The magnitude is nonzero, and the direction is upward.
D The magnitude is zero, and the direction is downward.

The correct answer is:
The magnitude is zero, and the direction is upward.

Solution:
Correct Option is : (A)
The magnitude is zero, and the direction is upward.

Topic: Chemistry, Laws of Motion, NEET
Question: What is the magnitude of the torque acting on an electric dipole with a dipole moment of 4 × 10⁻⁹ C·m when it is aligned at 30° with the direction of a uniform electric field of magnitude 5 × 10⁴ N/C? Options:

Options:
A 2.0 × 10⁻⁴ N·m
B 1.0 × 10⁻⁴ N·m
C 2.0 × 10⁻⁵ N·m
D 1.0 × 10⁻⁵ N·m

The correct answer is:
1.0 × 10⁻⁴ N·m

Solution:
Correct Option is : (B)
1.0 × 10⁻⁴ N·m

Topic: Chemistry, Electrostatics, NEET
Question: What is the nuclear density (in kg m–3) if the mass of an iron nucleus is 55.85u and A is 56?

Options:
A 1.29 × 1017kg m–3
B 2.29 × 1017kg m–3
C 3.29 × 1017kg m–3
D 4.29 × 1017kg m–3

The correct answer is:
2.29 × 1017kg m–3

Solution:
Correct Option is : (B)
2.29 × 1017kg m–3

Topic: Chemistry, Nuclear Physics, NEET
Question: What is the orbital period of the electron in a hydrogen atom in the n = 1 level according to Bohr's model?

Options:
A 1.52 × 1016s
B 1.52 × 10–16s
C 1.52 × 10–15s
D 1.52 × 10–14s

The correct answer is:
1.52 × 10–16s

Solution:
Correct Option is : (B)
1.52 × 10–16s

Topic: Chemistry, Atomic Physics, NEET
Question: What is the orbital radius of the electron in a hydrogen atom if it requires 13.6 eV of energy to separate a hydrogen atom into a proton and an electron?

Options:
A 5.3 × 10–11m
B 1.6 × 10–19m
C 6.626 × 10–34m
D 9.81 m

The correct answer is:
5.3 × 10–11m

Solution:
Correct Option is : (A)
5.3 × 10–11m

Topic: Chemistry, Atomic Physics, NEET
Question: What is the oxidation number of chlorine in the compound NaClO4?

Options:
A +1
B -1
C +3
D +7

The correct answer is:
+7

Solution:
Correct Option is : (D)
+7

Topic: Chemistry, Redox Reactions, NEET
Question: What is the potential difference across each capacitor if three capacitors, each with a capacitance of 9 pF, are connected in series and the combination is connected to a 120 V supply? Options:

Options:
A 40 V
B 60 V
C 80 V
D 120 V

The correct answer is:
40 V

Solution:
Correct Option is : (A)
40 V

Topic: Chemistry, Capacitance, NEET
Question: What is the power of a glass lens when the focal length (f) is 0.5 meters?

Options:
A +0.5 dioptres
B +1 dioptre
C +2 dioptres
D +4 dioptres

The correct answer is:
+2 dioptres

Solution:
Correct Option is : (C)
+2 dioptres

Topic: Chemistry, Ray Optics, NEET
Question: What is the refractive index of water when a tank is filled with water to a height of 12.5 cm, and the apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm?

Options:
A 1.33
B 1.14
C 1.25
D 1.50

The correct answer is:
1.33

Solution:
Correct Option is : (A)
1.33

Topic: Chemistry, Ray Optics, NEET
Question: What is the relationship between the area of the triangle contained between the vectors a and b?

Options:
A The area of the triangle is equal to the magnitude of a × b.
B The area of the triangle is one-fourth of the magnitude of a × b.
C The area of the triangle is one-half of the magnitude of a × b.
D The area of the triangle is twice the magnitude of a × b.

The correct answer is:
The area of the triangle is one-half of the magnitude of a × b.

Solution:
Correct Option is : (C)
The area of the triangle is one-half of the magnitude of a × b.

Topic: Chemistry, Rotational Motion, NEET
Question: What is the shape of the wavefront in each of the following cases: The portion of the wavefront of light from a distant star intercepted by the Earth?

Options:
A Plane
B Spherical
C Cylindrical
D Conical

The correct answer is:
Plane

Solution:
Correct Option is : (A)
Plane

Topic: Chemistry, Wave Optics, NEET
Question: What is the shape of the wavefront in each of the following cases when light emerges out of a convex lens with a point source placed at its focus?

Options:
A Plane
B Spherical
C Cylindrical
D Conical

The correct answer is:
Plane

Solution:
Correct Option is : (A)
Plane

Topic: Chemistry, Wave Optics, NEET
Question: What is the speed of light in glass with a refractive index of 1.5, given that the speed of light in a vacuum is 3.0 × 108m/s?

Options:
A 3.0 × 108m/s
B 2.0 × 108m/s
C 1.5 × 108m/s
D 4.5 × 108m/s

The correct answer is:
2.0 × 108m/s

Solution:
Correct Option is : (B)
2.0 × 108m/s

Topic: Chemistry, Wave Optics, NEET
Question: What is the speed of the electron in a hydrogen atom in the n = 1 level according to the Bohr's model?

Options:
A 1.68 × 106m/s
B 2.18 × 106m/s
C 2.91 × 106m/s
D 3.45 × 106m/s

The correct answer is:
2.18 × 106m/s

Solution:
Correct Option is : (B)
2.18 × 106m/s

Topic: Chemistry, Atomic Physics, NEET
Question: What is the total electric flux leaving the surface of the uniformly charged conducting sphere with a 2.4 m diameter and a surface charge density of 80.0 mC/${{m}^{2}}$?

Options:
A 0.2 × ${{10}^{8}}$N${{m}^{2}}$/C
B 0.8 × ${{10}^{8}}{{m}^{2}}$/C
C 1.6 × ${{10}^{8}}$N${{m}^{2}}$/C
D 4.8 × ${{10}^{8}}$N${{m}^{2}}$/C

The correct answer is:
1.6 × ${{10}^{8}}$N${{m}^{2}}$/C

Solution:
Correct Option is : (C)
1.6 × ${{10}^{8}}$N${{m}^{2}}$/C

Topic: Chemistry, Electrostatics, NEET
Question: When a hydrogen atom initially in the ground level absorbs a photon and is excited to the n = 4 level, what is the wavelength of the photon?

Options:
A 9.7 × 10-8m
B 4.9 × 10-7m
C 2.3 × 10-8m
D 1.5 × 10-9m

The correct answer is:
9.7 × 10-8m

Solution:
Correct Option is : (A)
9.7 × 10-8m

Topic: Chemistry, Atomic Physics, NEET
Question: When electrons drift in a metal from lower to higher potential, does it mean that all the ‘free’ electrons of the metal are moving in the same direction?

Options:
A Yes, they always move in the same direction.
B No, they move in random directions.
C Yes, but only in conductors.
D No, they move in opposite directions.

The correct answer is:
No, they move in random directions.

Solution:
Correct Option is : (B)
No, they move in random directions.

Topic: Chemistry, Current Electricity, NEET
Question: When is the splash heard at the top of the tower, given that a stone is dropped from the top of a tower of height 300 m into a pond near the base of the tower, and the speed of sound in air is 340 m/s, with gravity (g) being 9.8 m/s²?

Options:
A 2.84 seconds
B 4.28 seconds
C 8.70 seconds
D 17.12 seconds

The correct answer is:
8.70 seconds

Solution:
Correct Option is : (C)
8.70 seconds

Topic: Chemistry, Waves and Sound, NEET
Question: When light from a point source in air falls on a spherical glass surface (with a refractive index of 1.5) and a radius of curvature of 20 cm, and the distance of the light source from the glass surface is 100 cm, where is the image formed?

Options:
A 60 cm
B 80 cm
C 100 cm
D 120 cm

The correct answer is:
100 cm

Solution:
Correct Option is : (C)
100 cm

Topic: Chemistry, Ray Optics, NEET
Question: When two billiard balls, each with a mass of 0.05 kg, collide and rebound with the same speed after moving in opposite directions at 6 m/s, what is the impulse imparted to each ball due to the other?

Options:
A 0.15 kg m/s
B 0.30 kg m/s
C 0.60 kg m/s
D 0.90 kg m/s

The correct answer is:
0.60 kg m/s

Solution:
Correct Option is : (C)
0.60 kg m/s

Topic: Chemistry, Laws of Motion, NEET
Question: Where on the line joining two charges of 3 ×${{10}^{-8}}$C and –2 × ${{10}^{-8}}$C, located 15 cm apart, is the electric potential zero, assuming the potential at infinity is zero? Options:

Options:
A 5 cm from the 3 × ${{10}^{-8}}$ C charge
B 5 cm from the –2 × ${{10}^{-8}}$ C charge
C 9 cm from the 3 × ${{10}^{-8}}$C charge
D 10 cm from the –2 × ${{10}^{-8}}$ C charge

The correct answer is:
9 cm from the 3 × ${{10}^{-8}}$C charge

Solution:
Correct Option is : (C)
9 cm from the 3 × ${{10}^{-8}}$C charge

Topic: Chemistry, Capacitance, NEET
Question: Which element of Group 2 forms a covalent oxide that is amphoteric in nature and dissolves in water to give an amphoteric hydroxide?

Options:
A Beryllium
B Magnesium
C Calcium
D Strontium

The correct answer is:
Beryllium

Solution:
Correct Option is : (A)
Beryllium

Topic: Chemistry, s Block Elements, NEET
Question: Why are special rubber tires of aircraft made slightly conducting despite ordinary rubber being an insulator? Options:

Options:
A To increase friction and improve landing stability.
B To reduce the buildup of static electricity and prevent sparking.
C To enhance the durability of the tires during takeoff and landing.
D To improve the grip on the runway during adverse weather conditions.

The correct answer is:
To reduce the buildup of static electricity and prevent sparking.

Solution:
Correct Option is : (B)
To reduce the buildup of static electricity and prevent sparking.

Topic: Chemistry, Capacitance, NEET
Question: Why can one ignore quantization of electric charge when dealing with macroscopic, i.e., large scale charges? Options:

Options:
A Because quantization only applies to very small charges.
B Because macroscopic charges are always whole-number multiples of the elementary charge.
C Because quantization becomes negligible at macroscopic scales due to the large number of charged particles.
D Because macroscopic charges do not interact with each other at the quantum level.

The correct answer is:
Because quantization becomes negligible at macroscopic scales due to the large number of charged particles.

Solution:
Correct Option is : (C)
Because quantization becomes negligible at macroscopic scales due to the large number of charged particles.

Topic: Chemistry, Electrostatics, NEET