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NEET Practice Test - 9 - NEET MCQ


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180 Questions MCQ Test NEET Mock Test Series 2025 - NEET Practice Test - 9

NEET Practice Test - 9 for NEET 2024 is part of NEET Mock Test Series 2025 preparation. The NEET Practice Test - 9 questions and answers have been prepared according to the NEET exam syllabus.The NEET Practice Test - 9 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NEET Practice Test - 9 below.
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NEET Practice Test - 9 - Question 1

If power dissipated in the 9 Ω resistor in the circuit shown is 36 W, the potential difference across the 2 Ω resistor is

Detailed Solution for NEET Practice Test - 9 - Question 1
We have,

Current passing through the 9 Ω resistor is

The 9 Ω and 6 Ω resistors are in parallel, therefore

where i is the current delivered by the battery.

Therefore,

Thus, the potential difference across the 2 Ω resistor is

V = iRV = iR = 5 × 2 = 5 × 2 = 10 V

NEET Practice Test - 9 - Question 2

In a simple harmonic oscillator, at the mean position

Detailed Solution for NEET Practice Test - 9 - Question 2
In a simple harmonic oscillator, kinetic energy is maximum and potential energy is minimum at mean position.
NEET Practice Test - 9 - Question 3

Two white dots are 1 mm apart on a black paper. They are viewed by the pupil of the eye of diameter 3 mm3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? [Take wavelength of light = 500 nm]

Detailed Solution for NEET Practice Test - 9 - Question 3
Angle made by two points separated by distance y when viewed from large distance D

Resolving angular limit,

NEET Practice Test - 9 - Question 4

The threshold energy for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation incident on this surface 5 V. The incident radiation lies in

Detailed Solution for NEET Practice Test - 9 - Question 4
For photo-electron emission,

(Incident energy E) = (K.E.)max + (Work function ϕ)

or E = Km + ϕ

or E = 5 + 6.2 = 11.2 eV

= 11.2 x (1.6 x 1019 ) J

The incident radiation lies in the ultraviolet region.

NEET Practice Test - 9 - Question 5

A car moves at 80 km h-1 in the first half of total time of motion and at 40 km h−1 in the later half. Its average speed is

Detailed Solution for NEET Practice Test - 9 - Question 5

s1 = 40t and s2 = 20t

Total distance = s1 + s2 = 40t + 20t

Total distance = s1 + s2 = 40t + 20t

= 60 km h−1

NEET Practice Test - 9 - Question 6

In a p-n-p transistor biased in the active region, in the base, holes

Detailed Solution for NEET Practice Test - 9 - Question 6
Majority carrier diffuse from emitter to base where they recombine with the opposite charge carrier
NEET Practice Test - 9 - Question 7

A flask of mercury is sealed off at 20 °C and is completely filled with mercury. If the bulk modulus for mercury is 25000 MPa and the coefficient of volume expansion of mercury is 1.82 × 10−4 °C−1 and the expansion of glass is ignored, the pressure of mercury within the flask at 100 °C will be

Detailed Solution for NEET Practice Test - 9 - Question 7

= 1.46 × 10−2

Now the bulk modulus, where P is the pressure.

P = (25000) x 1.46 x 10-2 MPa = 365 MPa

NEET Practice Test - 9 - Question 8

A common emitter amplifier has a voltage gain of 50, an input impedance of 100 Ω and an output impedance of 200 Ω. The power gain of the amplifier is

Detailed Solution for NEET Practice Test - 9 - Question 8

where AV is voltage gain AV is voltage gain and (β)AC is AC current gain.

Also,

Given, AV = 50, Ro = 200 Ω, Ri = 100 Ω

∴ βAC = 25

Now, AC power gain = AV × βAC = 50 × 25 = 1250

NEET Practice Test - 9 - Question 9

A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature θ along the length x of the bar from its hot end is best described by which of the following figure?

Detailed Solution for NEET Practice Test - 9 - Question 9
We know that

In steady-state flow of heat

Equation θ = θH − k′x represents a straight line.

NEET Practice Test - 9 - Question 10

A body of mass m is resting on a wedge of angle θ as shown in figure. The wedge is given an acceleration a. What is the value of a such that the mass m just falls freely?

Detailed Solution for NEET Practice Test - 9 - Question 10
The horizontal acceleration aa of the wedge should be such that in time the wedge moves the horizontal distance BC. The body must fall through a vertical distance AB under gravity. Hence,

NEET Practice Test - 9 - Question 11

The magnetic dipole moment of a current loop is independent of

Detailed Solution for NEET Practice Test - 9 - Question 11
Magnetic dipole moment of a current is given by

M = N I A

where N = N = number of turns

I = current in a loop

A = area of the loop

From the above relation, it is clear that magnetic dipole moment of a current loop is independent of the magnetic field in which it is lying.

NEET Practice Test - 9 - Question 12

Two springs of spring constants 1500 N m-1 and 3000 N m-1 respectively are stretched with the same force. They will have potential energy into ratio

Detailed Solution for NEET Practice Test - 9 - Question 12
The work done in pulling the string is stored as potential energy in the spring

Where k is spring constant and x is distance through which it is pulled.

Also in SHM

Force ∝ displacement

F = kx .......(ii)

Putting x = F/k in Eq. (i), we get

NEET Practice Test - 9 - Question 13

A current of 10 A in the primary coil of a circuit is reduced to zero. If the coefficient of mutual inductance is 3 H and emf induced in the secondary coil is 30 kV, time taken for the change of current is

Detailed Solution for NEET Practice Test - 9 - Question 13

NEET Practice Test - 9 - Question 14

A thief stole a box full of valuable articles of weight w and while carrying it on his head jumped down from a wall of height h from the ground. Before he reaches the ground, he experienced a load

Detailed Solution for NEET Practice Test - 9 - Question 14
When the thief with box on his head jumped down from a wall, he along with box is falling down with acceleration due to gravity, so the apparent weight of box becomes zero, (because, R = mg - mg = 0), so he experiences no load till he reaches the ground
NEET Practice Test - 9 - Question 15

A body floats in a liquid contained in a beaker. If the whole system falls under gravity, then the upthrust on the body due to liquid is

Detailed Solution for NEET Practice Test - 9 - Question 15
Upthrust is independent of all factors of the body such as its mass, size, density etc, except the volume of the body inside the fluid. Fraction of volume immersed in the liquid Vin = (ρ/σ) V ie, it depends upon the densities of the block and liquid. So, there will be no change in it if system moves upward or downward with constant velocity or some acceleration. Therefore, the upthrust on the body due to liquid is equal tto the weight of the body in air.
NEET Practice Test - 9 - Question 16

The 9th division of vernier scale coincides with 6th division of main scale in a vernier calliper. If one main scale division is 0.01 mm, then the least count of instrument is

Detailed Solution for NEET Practice Test - 9 - Question 16
9 VSD = 6 MSD

and L.C. = 1 MSD - 1 VSD

= 0.01/3 mm = 0.0033 mm

NEET Practice Test - 9 - Question 17

In covering a certain distance, the time decreases by 20%, if speed (uniform) increases by 20 m/s. Find the original speed.

Detailed Solution for NEET Practice Test - 9 - Question 17
s = u × f …...(i)

……(ii)

⇒ 4u + 80 = 5u

⇒ u = 80 m/s

NEET Practice Test - 9 - Question 18

The relation between acceleration and velocity for a body moving in straight line is a ∝ v3. Choose correct option, (x is position and t is time)

Detailed Solution for NEET Practice Test - 9 - Question 18

NEET Practice Test - 9 - Question 19

A particle moves in x-y plane according to the law The equation of trajectory is

Detailed Solution for NEET Practice Test - 9 - Question 19

NEET Practice Test - 9 - Question 20

A block of mass m is constrained to move inside a ring of radius R which is fixed on a horizontal smooth table. At time t = 0, block is moving along the inside of the ring (i.e., in the tangential direction) with velocity v0. The coefficient of friction between the block and the ring is μ. Then the speed of the block at time t is

Detailed Solution for NEET Practice Test - 9 - Question 20

NEET Practice Test - 9 - Question 21

A body of radius R and radius of gyration K (about axis of rotation) is rolling without slipping. The fraction of its kinetic energy is in form of rotational kinetic energy is

Detailed Solution for NEET Practice Test - 9 - Question 21

NEET Practice Test - 9 - Question 22

If linear density of a rod of length 4 m varies as λ = 4 + x, then the position of the centre of gravity of the rod is

Detailed Solution for NEET Practice Test - 9 - Question 22

NEET Practice Test - 9 - Question 23

A and B are two loops made from same wire. The radii of A and B are r1, and r2 and their moment of inertia about same axes are I1 and l2.

If I1/I2 = 1/4 then the value of r2/r1 is

Detailed Solution for NEET Practice Test - 9 - Question 23
I = mr2, m = d × AL, L = 2πr

∴ m = d × A × 2 πr ⇒ m ∝ r

NEET Practice Test - 9 - Question 24

A wheel having moment of inertia 3 kg-m2 about its vertical axis, rotates at the rate of 30 rpm about this axis. The torque which can stop the wheel’s rotation in one minute would be

Detailed Solution for NEET Practice Test - 9 - Question 24

NEET Practice Test - 9 - Question 25

The velocity of four gas molecules are given by 1 km/s, 2 km/s, 6 km/s and 8 km/s respectively. The rms velocity is

Detailed Solution for NEET Practice Test - 9 - Question 25

NEET Practice Test - 9 - Question 26

The ratio of the density and pressure of a fixed mass of an ideal gas is “5” at 10°C. Then this ratio at 110°C is

Detailed Solution for NEET Practice Test - 9 - Question 26

NEET Practice Test - 9 - Question 27

A particle of mass 0.2 kg executes SHM under a force of F = - 20x N. If speed of particle at mean position is 12 m/s then the amplitude of oscillations is

Detailed Solution for NEET Practice Test - 9 - Question 27
From conservation of mechanical energy,

NEET Practice Test - 9 - Question 28

If two SHMs are represented by equations

then the ratio of their amplitudes is

Detailed Solution for NEET Practice Test - 9 - Question 28

The above equation becomes

NEET Practice Test - 9 - Question 29

Moment of inertia of a ring about its diameteric axis is I. Two such rings are welded as shown in figure. The new moment of inertia about XX’ axis is

Detailed Solution for NEET Practice Test - 9 - Question 29

NEET Practice Test - 9 - Question 30

A string is hanging from a rigid support. A transverse pulse is excited at its free end. The speed at which the pulse travels a distance x is proportional to

Detailed Solution for NEET Practice Test - 9 - Question 30

Pulse at distance x from free end

Mass per unit length = M/L

NEET Practice Test - 9 - Question 31

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: A body that is a good radiator is also a good absorber of radiation at a given wavelength.

Reason: According to Kirchhoff's law the absorptivity of a body is equal to its emissivity at a given wavelength.

Detailed Solution for NEET Practice Test - 9 - Question 31
According to Kirchhoff's law, a = e. or the absorptivity of a body equals its emissivity. A good absorber is a good emitter. As a good absorber is poor reflector, emitting (or radiating) ability of body is oppositely related to its ability to reflect. Therefore good emitter (or radiator) is a poor reflector.
NEET Practice Test - 9 - Question 32

In an experiment, sonometer wire vibrates in 4 loops when a 50 g weight is placed in the pan of weight 15 g. To make the wire vibrates in 6 loops the mass that has to be removed from the pan is approximately [frequency of vibration remains constant]

Detailed Solution for NEET Practice Test - 9 - Question 32

∴ Mass removed from the pan

M1 - M2 = 65 - 28.8 = 36.2 g

NEET Practice Test - 9 - Question 33

Two particles each of mass m are moving in a circle of radius r with speed v each around the third mass M as shown in figure. The value of v is

Detailed Solution for NEET Practice Test - 9 - Question 33

As centripetal force is provided by gravitational force

NEET Practice Test - 9 - Question 34

Thermodynamic processes are indicated in the following diagram:

Match the following:

Detailed Solution for NEET Practice Test - 9 - Question 34
In Process I volume is constant. Hence, it is Isochoric Process.

In process II, it follows the curve whose slope is steeper than the isothermal curve. Hence, it is an Adiabatic process.

In process III, it is following the isothermal curve, the process is Isothermal.

In process IV, the pressure is constant hence, it is an Isobaric process.

NEET Practice Test - 9 - Question 35

What is the value of output voltage V0 in the given circuit?

Detailed Solution for NEET Practice Test - 9 - Question 35
In the circuit Zener diode is used as voltage regulating device. The output voltage V0 = 6V which is the potential across the Zener diode. because in parallel, the potential remains the same.
NEET Practice Test - 9 - Question 36

An ideal gas is taken through the cycle A → B → C → A as shown in the figure below. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

Detailed Solution for NEET Practice Test - 9 - Question 36
Process A → B occurs at constant pressure.

Hence the work done in this process is

WAB = PdV = P(V2 - V1) = 10 × (2 - 1) = 10 J

Process B → C, occurs at constant volume.

Hence WBC = 0.

Given Q = 5 J, i.e. total work done is Wt = 5 J.

Therefore, we have

Wt = WAB + WBC + WCA

or 5 = 10 + 0 + WCA

or WCA = -5 J, which is choice (1).

NEET Practice Test - 9 - Question 37

A 4.5 cm long needle is placed 12 cm away from a convex mirror of focal length 15 cm. Give the location of the image and the magnification.

Detailed Solution for NEET Practice Test - 9 - Question 37
Height of the needle, h1 = 4.5 cm

Object distance, u = − 12 cm

Focal length of the convex mirror, f = 15 cm

Image distance = v

The value of v can be obtained using the mirror formula:

Hence, the image of the needle is 6.7 cm away from the mirror. Also, it is on the other side of the mirror.

The image size is given by the magnification formula:

Hence, magnification of the image,

The height of the image is 2.5 cm. The positive sign indicates that the image is erect, virtual and diminished.

NEET Practice Test - 9 - Question 38

A double-slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1 mm and distance between the plane of slits and the screen is 1.33 m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300 Å. What is the fringe width?

Detailed Solution for NEET Practice Test - 9 - Question 38
Wavelength in air is λa = 6000 Å. Let its speed in air be va. When the apparatus is immersed in a liquid the frequency of the wave remains unchanged but its wavelength and speed both will change. Let λl be the wavelength and vl be the speed in the liquid.

Since v = vλ, we have

(c is the speed of light in vacuum). Now the refractive index of a medium is n = c/v.

Hence,

Given λa = 6000 Å and nl = 4/3.

Therefore

Hence the fringe width in liquid will be

The fringe width in liquid is

where is the fringe width in air.

Thus

= 0.63 × 10-3 m = 0.63 mm

Hence the correct choice is (4).

NEET Practice Test - 9 - Question 39

A rod AB of mass 10 kg and length 4 m rests on a horizontal floor with end A fixed so as to rotate it in a vertical plane about the perpendicular axis passing through A. If the work done on the rod is 100 J, the height to which the end B is raised vertically above the floor is

Detailed Solution for NEET Practice Test - 9 - Question 39

NEET Practice Test - 9 - Question 40

When a DC voltage of 200 V is applied to a coil of self-inductance H, a current of 1 A flows through it. But by replacing the DC source with an AC source of 200 V, the current in the coil is reduced to 0.5 A. The frequency of the AC supply is

Detailed Solution for NEET Practice Test - 9 - Question 40

NEET Practice Test - 9 - Question 41

For what value of unknown resistance X the potential difference between B and D will be zero in arrangement of adjacent figure -

Detailed Solution for NEET Practice Test - 9 - Question 41

NEET Practice Test - 9 - Question 42

Current gain is maximum in the following configuration of a transistor:

Detailed Solution for NEET Practice Test - 9 - Question 42
Current gain in CE configuration is hence it is maximum.
NEET Practice Test - 9 - Question 43

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion : Blue star is at high temperature than red star.

Reason : Wein's displacement law states that T∝(1/λm).

Detailed Solution for NEET Practice Test - 9 - Question 43
From Wein's displacement law, temperature (T)∝1/λm (where λm is the maximum wavelength). Thus temperature of a body is inversely proportional to the wavelength. Since blue star has smaller wavelength and red star has maximum wavelength, therefore blue star is at higher temperature then red star.
NEET Practice Test - 9 - Question 44

A wheel is rotating freely with an angular speed ω on a shaft. The moment of inertia of the wheel is I and the moment of inertia of the shaft is negligible. Another wheel of moment of inertia 3I initially at rest is suddenly coupled to the same shaft. The resultant fractional loss in the kinetic energy of the system is:

Detailed Solution for NEET Practice Test - 9 - Question 44
From angular momentum conservation

Loss of kinetic energy

Fractional loss = 3/4

NEET Practice Test - 9 - Question 45

Let Ln be the orbital angular momentum and rn be the radius of the electron in the nth orbit in Bohr model of hydrogen atom. Then,

Detailed Solution for NEET Practice Test - 9 - Question 45
If rn represents radius of nth orbit and Ln represents orbital angular momentum of electron in nth orbit.

Then, from Bohr's theory we know that,

From equation (i) and (ii), by rearranging substituting the value of Ln we will get

NEET Practice Test - 9 - Question 46

2-hexyne gives trans-2-hexene on treatment with

Detailed Solution for NEET Practice Test - 9 - Question 46
Alkynes on treatment with alkali metals in liquid ammonia gives trans hydrogenation product

Its birch reduction, alkali metal in presence of liquid ammonia shows addition of hydrogen atoms on opposite ends. Therefore, gives trans compound.

NEET Practice Test - 9 - Question 47

In case of nitrogen, NCl3 is possible but not NCl5, while in case of phosphorus, PCl3 as well as PCl5 are possible. It is due to

Detailed Solution for NEET Practice Test - 9 - Question 47
7N = 1s2, 2s23p3

15P = 1s2,2s22p6,3s23p33d0

In phosphorus the 3d−orbitals are available to get excited state of P.

PCl5 is sp3d hybridisation of P.

PCl3 is sp3 hybridisation of P.

NEET Practice Test - 9 - Question 48

The following carbohydrate is

Detailed Solution for NEET Practice Test - 9 - Question 48
Here, the —OH of hemiacetal group is equatorial therefore, it is a β-pyranose of an aldohexose.
NEET Practice Test - 9 - Question 49

BOD is the measure of organic material present in water. BOD value less than 5 ppm indicates the water sample to be:

Detailed Solution for NEET Practice Test - 9 - Question 49
The amount of BOD in water is an account of the quantity of organic material in water, in units of how much oxygen will be required to break it down biologically.

High BOD means more organic compounds. Hence, more oxygen is required by the bacteria for degradation. Therefore, lower will be the amount of dissolved oxygen.

Low BOD means lesser organic compounds. Hence, for clean water, lesser oxygen is required by the bacteria for degradation. Therefore, higher will be the amount of dissolved oxygen.

Clean water has a BOD value of less than 5 ppm, whereas, highly polluted water has a BOD value of 17 ppm or more.

NEET Practice Test - 9 - Question 50

The methods chiefly used for the extraction of lead and tin from their ores are respectively,

Detailed Solution for NEET Practice Test - 9 - Question 50

carbon reduction and self reduction.

Explanation:

Lead is mainly extracted from its ore, galena (PbS), through the process of carbon reduction. In this process, galena is roasted in the presence of air to convert it into lead oxide (PbO). Then, the lead oxide is mixed with coke (a form of carbon) and heated, which reduces the lead oxide to metallic lead.

Tin is primarily extracted from its ore, cassiterite (SnO2), using the process of self-reduction. In this process, cassiterite is heated in the presence of carbon and limestone. The carbon reacts with the oxygen in the cassiterite, forming carbon dioxide and leaving behind pure tin. The limestone acts as a flux, combining with impurities to form slag, which can be separated from the tin.

NEET Practice Test - 9 - Question 51

Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point?

Detailed Solution for NEET Practice Test - 9 - Question 51
As we go down in the group, ionic character increases hence, melting point of halides should increase but NaCl has the highest melting point (800℃) due to its high lattice energy.

LiCl is covalent due to Fajan's rules.

NEET Practice Test - 9 - Question 52

The best method to separate the mixture of ortho− and para− nitrophenol (1:1) is

Detailed Solution for NEET Practice Test - 9 - Question 52
Ortho− and para− nitrophenol is separated by distillation because p−nitrophenol has a higher boiling point than o−nitrophenol, due to H−bonding.
NEET Practice Test - 9 - Question 53

To distinguish between salicylic acid and phenol one can use

Detailed Solution for NEET Practice Test - 9 - Question 53
Salicylic acid +NaHCO3 → effervescence of CO2

Phenol +NaHCO3 → No reaction

∴ NaHCO3 is used to distinguish between phenol and salicylic acid.

NEET Practice Test - 9 - Question 54

Which of the following doesn't give Fehling solution test?

Detailed Solution for NEET Practice Test - 9 - Question 54
This reagent is used as Fehling solution A and Fehling solution B collectively known as Fehling solution. Chemically Fehling solution is cupric ion complex with tartrate anion. This reagent oxidizes Aldehydes but does not react with ketone because it is a mild oxidizing reagent with a reduction of itself to red precipitate. The red precipitate is chemically Cu2O.

NEET Practice Test - 9 - Question 55

Which one of the following pairs of ions have the same electronic configuration?

Detailed Solution for NEET Practice Test - 9 - Question 55
Fe+3 ≡ [Ar]4s° 3d5

Mn2+ ≡ [Ar]4s° 3d5

NEET Practice Test - 9 - Question 56

2-Methylbutan-2-ol can be obtained by the acid catalyzed hydration of

Detailed Solution for NEET Practice Test - 9 - Question 56
Proceed backward i.e., remove a molecule of water to get the alkene.

NEET Practice Test - 9 - Question 57

In order to refine "blister copper" it is melted in a furnace and stirred with green logs of wood. The purpose is ____.

Detailed Solution for NEET Practice Test - 9 - Question 57
Blister copper obtained from smelting and air is allowed to blow through and a flux must be added. Impurities are oxidised and escape as gases or pass into the slag. Finally, the surface of molten metal is covered with low sulphur coke (to prevent the oxidation of the metal) and green logs of wood are introduced into the molten metal and metal is stirred. The addition of green logs reduces the metallic oxide impurities with hydrocarbon gases liberated from the wood. This process is known as poling or furnace refining.
NEET Practice Test - 9 - Question 58

Aniline is less basic than cyclohexylamine because of which of the following reasons?

Detailed Solution for NEET Practice Test - 9 - Question 58
Basic nature of amine is based on the availability of lone pairs of N atoms. Aniline is an aromatic amine and its lone pair of electrons are involved in resonance, hence, lone pair are not available for donation.

While cyclohexylamine is an aliphatic amine and electron density on N−atom increases by +I effect of cyclohexyl group, hence, basic nature increases.

NEET Practice Test - 9 - Question 59

In which of the following is the ratio of the sizes of cation to anion the smallest?

Detailed Solution for NEET Practice Test - 9 - Question 59
Na+ = 116 pm, K+ = 152 pm Mg2+ = 86 pm, Ca2+ = 114 pm

F= 119 pm, Cl = 167 pm

So, the order of the size of cations is:

Mg2+ < />2+ < />+ < />+

The ratio of the will be the smallest for MgCl2.

NEET Practice Test - 9 - Question 60

Protective action is performed by A colloids for B colloids. Here A and B respectively, are:

Detailed Solution for NEET Practice Test - 9 - Question 60
Lyophilic solutions are more stable than lyophobic solutions. This is due to the fact that lyophilic colloids are extensively solvated, i.e., colloidal particles are covered by a sheath of liquid.

When a lyophilic colloid is added to a lyophobic colloid, the lyophilic colloid forms a layer around lyophobic particle and thus protect from an electrolyte.

Lyophilic colloids used for this purpose are called protective colloid.

NEET Practice Test - 9 - Question 61

Producer gas is a mixture of

Detailed Solution for NEET Practice Test - 9 - Question 61
Producer gas is a mixture of CO + N,.
NEET Practice Test - 9 - Question 62

The anion present in the cyclic structure of silicates is

Detailed Solution for NEET Practice Test - 9 - Question 62
Cyclic silicates are formed when two oxygen atoms of each tetrahedron are shared with

others.

NEET Practice Test - 9 - Question 63

Buckminsterfullerene contains

Detailed Solution for NEET Practice Test - 9 - Question 63
Buckminster fullerene contains twelve five membered rings and twenty six membered rings
NEET Practice Test - 9 - Question 64

Which of the following is an acidic oxide?

Detailed Solution for NEET Practice Test - 9 - Question 64
  • SiO2 is acidic in nature.

  • PbO2 and SnO are amphoteric in nature.

  • CO is neutral in nature.

NEET Practice Test - 9 - Question 65

Consider the following statements about boric acid.

I. It is a weak monobasic acid

II. It is not a protonic acid

III. It acts as a lewis acid

The correct statement(s) among the following is/are

Detailed Solution for NEET Practice Test - 9 - Question 65
  • H3BO3 is boric acid.

  • It is weak monobasic acid and is not a protonic aci