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NEET Mock Test - 6 - NEET MCQ

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30 Questions MCQ Test - NEET Mock Test - 6

NEET Mock Test - 6 for NEET 2025 is part of NEET preparation. The NEET Mock Test - 6 questions and answers have been prepared according to the NEET exam syllabus.The NEET Mock Test - 6 MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NEET Mock Test - 6 below.

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NEET Mock Test - 6 - Question 1

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A capacitor of capacitance 2 μF is connected in the tank circuit of an oscillator oscillating with a frequency of 1 kHz. If the current flowing in the circuit is 2 mA, the voltage across the capacitor will be

A. 0.16 V
B. 0.32 V
C. 79.5 V
D. 159 V

Detailed Solution for NEET Mock Test - 6 - Question 1

Reactance of capacitor or capacitive reactance is given by:

; where f is frequency of the alternating current.

Given: f = 1 × 10³ Hz, C = 2 × 10^–6 F

Hence, voltage across the capacitor,

NEET Mock Test - 6 - Question 2

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Two infinitely long parallel conducing plates having surface charge densities +σ and –σ are separated by a small distance. The medium between the plates is vacuum. If Ɛ₀ is the dielectric permittivity of vacuum, then the electric field in the region between the plates is

A. Zero
B. σ / 2Ɛ₀V/m
C. σ / Ɛ₀V/m
D. 2σ / Ɛ₀V/m

Detailed Solution for NEET Mock Test - 6 - Question 2

It is given that conducting plates have surface charge densities +σ and –σ. Since the sheet is large, the electric field E at energy point near the sheet will be perpendicular to the sheet.

The resultant electric field is given by:

E' = E + E = 2E

If σ is surface charge density, then

Electric field,

Hence, E' = 2E = V/m

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NEET Mock Test - 6 - Question 3

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The acceleration of the particle performing uniform circular motion is

A.
v²/r
B.
0
C.
vr
D.
ω²/r

Detailed Solution for NEET Mock Test - 6 - Question 3

(a) v²/r

NEET Mock Test - 6 - Question 4

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Four resistances 10Ω, 5Ω, 7Ω and 3Ω are connected, so that they form the sides of a rectangle AB, BC, CD and DA, respectively. Another resistance of 10Ω is connected across the diagonal AC. The equivalent resistance between A and B is

A. 2Ω
B. 5Ω
C. 7Ω
D. 10Ω

Detailed Solution for NEET Mock Test - 6 - Question 4

3Ω resistor and 7Ω resistor are in series.

Therefore, resultant = 10Ω (7 + 3)

This 10Ω equivalent resistance is in parallel with resistance (10Ω) in arm AC.

⇒ R₁ = 5Ω

Again R₂ is in parallel with resistance (10Ω) in arm AB.

⇒ R = 5Ω

NEET Mock Test - 6 - Question 5

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In an experiment of finding the focal length of a concave mirror, a graph is drawn between the magnitudes of u and v. The graph looks like:

Detailed Solution for NEET Mock Test - 6 - Question 5

In case of concave mirror, when we move the object from infinity to focus of the mirror (i.e. u decreases from ∞ to f), the image moves from focus to (i.e. v increases from f to ∞). Therefore, the graph looks like the curve shown in Fig. (3).

NEET Mock Test - 6 - Question 6

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The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately

A. 540 nm
B. 400 nm
C. 310 nm
D. 210 nm

Detailed Solution for NEET Mock Test - 6 - Question 6

The minimum energy of incident radiation required to eject the electrons from metallic surface is defined as work function of that surface.

W₀= h_c /λ₀ ; where λ₀ = threshold wavelength.

Work function in electron volt W₀ (eV),

⇒ λ₀ = 310 nm

NEET Mock Test - 6 - Question 7

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The function of heavy water in a nuclear reactor is to

A. slow down the neutrons
B. increase the neutrons
C. stop the electrons
D. None of the above

Detailed Solution for NEET Mock Test - 6 - Question 7

A nuclear reactor is a device in which a self-sustaining controlled chain reaction is produced in a fissionable material. A nuclear reactor consists of a moderator which is used to slow down the neutrons. Heavy water is the best moderator.

NEET Mock Test - 6 - Question 8

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Which of the following pairs does not have similar dimensions?

A. Tension and surface tension
B. Stress and pressure
C. Planck's constant and angular momentum
D. Angle and strain

Detailed Solution for NEET Mock Test - 6 - Question 8

Dimensions of surface tension

Surface tension = = [MT^–2]

Dimensions of tension = [MLT^–2]

Hence, dimensions of surface tension and tension are not similar.

While dimensions of stress and pressure are [ML^–1T^–2]

Planck's constant and angular momentum have dimensions: [ML²T^–1].

Also, angle and strain are dimensionless quantities.

NEET Mock Test - 6 - Question 9

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Three short dipoles each of dipole moment of magnitude p are placed on a circle of radius R as shown. The magnitude of electric field intensity at centre will be

A.
B.
C.
D. Zero

Detailed Solution for NEET Mock Test - 6 - Question 9

IE₁| = |E₂| = |E₃| = E

NEET Mock Test - 6 - Question 10

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Equipotential surfaces corresponding to electric field due to infinite charged sheet are

A. Spherical
B. Cylindrical
C. Circular
D. Planar

Detailed Solution for NEET Mock Test - 6 - Question 10

Equipotential surface due uniformly charged plane sheet corresponding to its electric field will be planar.

NEET Mock Test - 6 - Question 11

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A galvanometer has a resistance 100 Ω. It gives full scale deflection on passing 10 mA current through it. To convert it into a voltmeter of range 0 - 10 V, the resistance to be added in series is

A. 8000 Ω
B. 900 Ω
C. 110 Ω
D. 90 Ω

Detailed Solution for NEET Mock Test - 6 - Question 11

= 900Ω

NEET Mock Test - 6 - Question 12

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Select the correct option

A. If net charge on the system is zero, then the electric field around the system must be zero
B. If net charge on the system is zero, then the electric potential energy of system must be zero
C. If net charge on the system is zero, then the electric potential energy of system may be non-zero
D. If net charge on the system is zero, then the electric potential of system must be zero

Detailed Solution for NEET Mock Test - 6 - Question 12

Electric potential energy of system of charge depend upon the charge and separation between the charges.

NEET Mock Test - 6 - Question 13

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Find the current through 10 Q resistor shown in figure

A. Zero
B. 1 A
C. 2 A
D. 5 A

Detailed Solution for NEET Mock Test - 6 - Question 13

Applying KVL in Loop 1,

Applying KVL in Loop 2,

- 3i - 6 ( i - i₁) + 4 .5 = 0 ... (ii)

On solving (i) & (ii), i₁ = 0

NEET Mock Test - 6 - Question 14

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In a region of space, suppose there exists a electric field . The potential difference V_A - V_o is (where VQ is the potential at the origin and V_A the potential at x = 2 m is

A. -160 V
B. 160 V
C. 120 V
D. -80 V

Detailed Solution for NEET Mock Test - 6 - Question 14

V_A - V_o = -160 V

NEET Mock Test - 6 - Question 15

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In the potentiometer circuit shown in figure, the internal resistance of the 12 V battery is 1Ω and length of the wire AB is 100 cm. When CB is 60 cm, the galvanometer show no deflection. The emf of cell E is (the resistance of wire AB is 3 Ω)

A. 3.6 V
B. 2.4 V
C. 3 V
D. 4.5 V

Detailed Solution for NEET Mock Test - 6 - Question 15

NEET Mock Test - 6 - Question 16

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A cell of emf E and internal resistance r is connected in series with an external resistance nr. The ratio of the terminal potential difference to emf is

A. 1 / n
B. 1 / n + 1
C. n / n + 1
D. n + 1 / n

Detailed Solution for NEET Mock Test - 6 - Question 16

E - i(r) = Terminal voltage

= Terminal voltage

NEET Mock Test - 6 - Question 17

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If i₁= 3 sin cat and i₂ = 4 cos cot then i₃ is

A. 5 sin (ωt + 53°)
B. 5 sin (ωt + 30°)
C. 5 sin (ωt + 45°)
D. 5 cos (ωt + 53°)

Detailed Solution for NEET Mock Test - 6 - Question 17

i₃ = 3 sinωt + 4 cosωt

= i₀ sin ωt + θ)

⇒ i_o = 5

tanθ = 4/3

⇒ θ = 53°

i₃ = 5 sin (ωt + 53°)

NEET Mock Test - 6 - Question 18

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Statement I: The magnetic field of a circular loop at very far away point on the axial line varies with distance as like that of a magnetic dipole.

Statement II: The magnetic field due to magnetic dipole varies inversely with the square of the distance from the centre on the axial line.

Select correct option based on the above statements:

A. I is correct and II is incorrect.
B. I is incorrect and II is correct.
C. Both I and II are correct.
D. Both I and II are incorrect.

Detailed Solution for NEET Mock Test - 6 - Question 18

Step 1: Find the magnetic field due to the circular coil on the axial line at a far away distance.

Step 2: Find the magnetic field due to bar magnet on the axial line.

The magnetic field due to magnetic dipole varies inversely with the cube of the distance from the center on the axial line.

NEET Mock Test - 6 - Question 19

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Assertion (A): Gauss's law for magnetism states that the net magnetic flux through any closed surface is zero.

Reason (R): The magnetic monopoles do not exist. North and South poles occur in pairs, allowing vanishing net magnetic flux through the surface.

A. (A) is true but (R) is false.
B. (A) is false but (R) is true.
C. both (A) and (R) are true and (R) is the correct explanation of (A).
D. both (A) and (R) are true but (R) is not the correct explanation of (A).

Detailed Solution for NEET Mock Test - 6 - Question 19

Magnetic monopoles do not exist in nature. North and South poles occur in pairs, allowing vanishing net magnetic flux through the surface. Therefore, the net magnetic flux through any closed surface is zero.

NEET Mock Test - 6 - Question 20

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Which of the following hydrocarbons has the lowest dipole moment?

A. cis-2-butene
B. 2-butyne
C. 1-butyne
D. H₂C = CH−C ≡ CH

Detailed Solution for NEET Mock Test - 6 - Question 20

CH₃−C≡C−CH₃ : symmetric

The given molecule has linear shape and symmetric from both side, So, it will have zero dipole moment. The remaining three option will have non-zero dipole moment.

NEET Mock Test - 6 - Question 21

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Choose the products formed on hydrolysis of XeF6XeF6:

A. XeO₂F₂

B. XeOF₄

C. XeO₄

D. XeO₃

A. A,C and D
B. A,B and D
C. B,C and D
D. A,B and C

Detailed Solution for NEET Mock Test - 6 - Question 21

Products obtained on hydrolysis are dependent on the amount of water consumed. Initially, on using less amount of water, oxyfluorides are formed and on complete hydrolysis it gives oxide.

XeF₆+ H₂O → XeOF₄+ 2HF

XeF₆+ 2H₂O → XeO₂F₂+ 4HF

XeF6 + 3H₂O → XeO₃+ 6HF

NEET Mock Test - 6 - Question 22

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When rain is accompanied by a thunderstorm , the collected rain water will have a pH value?

A. Slightly higher than that when the thunderstorm is not there
B. Uninfluenced by occurrence of thunderstorm
C. Which depends on the amount of dust in air
D. Slightly lower than that of rain water without thunderstorm

Detailed Solution for NEET Mock Test - 6 - Question 22

Electric Discharge Reactions are

N₂+O₂⟶ 2NO²

2NO(g) + O₂(g)⟶2NO₂

2NO₂ + H₂O ⟶ HNO₃ + HNO₂

leading [H⁺] increased value i.e lower pH

NEET Mock Test - 6 - Question 23

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The IUPAC name of the complex ion is

A. chlorobis(ethylenediamine)nitrito -O-cobalt (III) ion
B. chlorobis(ethylenediamine)nitrito−N−cobalt (III) ion
C. chlorobis(ethylenediamine)nitro-cobalt (III) ion
D. chlorobis(ethylenediamine)cobalt (III) ion

Detailed Solution for NEET Mock Test - 6 - Question 23

The IUPAC rule for naming the coordination compounds are as follows.

1. Ligands are named first in their alphabetical order.

2. The name of the metal comes next.

3. Further, the oxidation state of the metal is noted by a Roman numeral in parenthesis.

IUPAC name of the compound is chlorobis(ethylenediamine)nitrito−O−cobalt (III) ion.

NEET Mock Test - 6 - Question 24

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When phenyl magnesium bromide reacts with tertiary butyl alcohol, which of the following is formed?

A. Tert.butyl methyl ether
B. Tert.butyl benzene
C. Benzene
D. Phenol

Detailed Solution for NEET Mock Test - 6 - Question 24

This is an acid base reaction in which alkyl anion of Grignard reagent act as a strong base which react with acidic hydrogen of alcohol.

NEET Mock Test - 6 - Question 25

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In the light of the below statements, choose the correct answer from the options given below.

Statement I: Acid strength increases in the order given as HF < HCl < HBr < HI.

Statement II: As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases.

A. I is correct but II is false.
B. I is incorrect but II is true.
C. Both I and II are true.
D. Both I and II are false.

Detailed Solution for NEET Mock Test - 6 - Question 25

Acidic strength is inversely proportional to the bond enthalpy of HX.

The correct acid strength increases in the order given as HF << HCl << HBr << HI. As the size of the elements F, Cl, Br, I increase down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases.

NEET Mock Test - 6 - Question 26

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Directions : Each of these questions contain two statements, Assertion and Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.

Assertion : A force applied on the body always does work on the body.

Reason : If a force applied on a body displaces the body along the direction of force work done will be maximum.

A. Assertion is correct, reason is correct; reason is a correct explanation for assertion.
B. Assertion is correct, reason is correct; reason is not a correct explanation for assertion
C. Assertion is correct, reason is incorrect
D. Assertion is incorrect, reason is correct.

Detailed Solution for NEET Mock Test - 6 - Question 26

If force is acting on a body work done can be zero. When an object is at rest and no external force except gravity is acting on it in this case the work that would be zero as the force acting on it is perpendicular.

NEET Mock Test - 6 - Question 27

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Which of the following organisms completely lack cell wall?

A. Cyanobacteria
B. Heterocysts
C. Eubacteria
D. Mycoplasmas

Detailed Solution for NEET Mock Test - 6 - Question 27

Mycoplasmas are the organisms that completely lack cell wall. This characteristic makes them naturally resistant to antibiotics that target cell wall synthesis (like the beta-lactam antibiotics). They can be parasitic or saprotrophic. They are the smallest living cells known and can survive without oxygen.

NEET Mock Test - 6 - Question 28

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Which statement stands true for an “Urn” shaped pyramid?

A. A low percentage of pre-reproductive individuals
B. Positive growth in population
C. High birth rate
D. Growth rate becomes zero

Detailed Solution for NEET Mock Test - 6 - Question 28

Low percentage of pre- reproductive individuals.

NEET Mock Test - 6 - Question 29

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Identify A, B, C and D in the given table.

A. A: (+), B: Mutualism, C: (0), D: Competition
B. A: (-), B: Parasitism, C: (+), D: Amensalism
C. A: (+), B: Competition, C: (0), D: Mutualism
D. A: (0), B: Amensalism, C: (+), D: Parasitism

Detailed Solution for NEET Mock Test - 6 - Question 29

Parasitism (+/-): This association involves individuals of two species of different sizes in which the smaller (parasite) is benefitted and the larger (host) is harmed. The parasite gets nourishment and shelter from host but does not kill the host.
Mutualism (+/+) or Symbiosis: It is a positive interspecific interaction in which members of two different species completely depend on each other for growth and survival.
Competition(-/-): Interaction between two species where both suffer adverse effects is known as competition.
Amensalism (-/0): In this interaction, one species is inhibited by the toxic secretion of another species. Inhibitor species is neither benefited nor harmed.

NEET Mock Test - 6 - Question 30

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Simple cuboidal epithelium lines all the following structures except the ___________.

A.
Ovary
B.
Pancreatic ducts
C.
Thyroid follicles
D.
Fallopian tube

Detailed Solution for NEET Mock Test - 6 - Question 30

Ciliated columnar epithelium lines the Fallopian tubes.

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