Grand Test 1 NEET 2021

Axoneme with 9 + 2 microtubular arrangement occurs in

Prokaryotic and eukaryotic flagella differ in the

Both the membranes of mitochondrion are

Which of the following statement is correct regarding vacuole?

According to widely accepted “fluid mosaic model” cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard,which of the following statements is incorrect?

In the given figure of an animal cell, one organelle is marked as A. Select the correct identification and function of the organelle ‘A’ from the given option

Which of the following is absent in prokaryotes?

Which of the following pair lack the unit membrane?

Which of the following lacks cell wall?

Microtubules are absent in

Which one of the following combination is mismatched?

Satellite means

Which of the following is associated with the structure marked as “X”?

Which of the following statements is correct regarding the absorption of fatty acids?

Which of the following is not the function of digestive system?

Which of the following statement is incorrect ?

A person who is on hunger strike and is surviving only on water, will have

Which part is infected when a person is suffering from diarrhoea ?

If the large intestine becomes irritated and peristalsis increases then which of the following will result?

Mammalian teeth are

All of the following is correct w.r.t. large intestine except

Which has maximum pH ?

A young person is suffering from cancer in tongue. His tongue is completely removed, then which of the following situation will describe the person that the will be able to-

Which one of the following pairs of the type of cells and their secretion is correctly matched :-

Which of the following statement is correct?

Which of the following statement is incorrect?

Which of the following statement correctly defines Bohr effect?

Mark the correct statement.

Which of the following statements is correct?

Which one of the followings statements is not correct?

Which of the following statement is correct regarding Oxy-Haemoglobin Dissociation Curve?

The chloride shift in red blood cells is the movement of

Which one of the following statements is correct?

Which is not a stem modification ?

Which layer of the human tooth links it with periodontal layer of alveolar socket?

Read the statements about saliva

1. saliva helps in lubricating and adhering the masticated food particles into a chyme
2. About 60 percent of starch is hydrolyzed here by this salivary enzyme
3. Lysozyme present in saliva acts as an antiviral agent that prevents infections.
4. Optimum pH for saliva is 7.4

How many of the following are incorrect?

Which is correct about nasopharynx?

Inspiration occurs when there is a negative pressure in the lungs with respect to atmospheric pressure.’ This negative pressure is achieved when

Which of the following is correct?

Which of the following can alter respiratory mechanism?

In the given figure

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is

Two constant forces F1=2ˆi−3ˆj+3ˆk (N) and F2=ˆi+ˆj−2ˆk (N) act on a body and displace it from the position r1=ˆi+2ˆj−2ˆk (m) to the position r2=7ˆi+10ˆj+5ˆk (m). What is the work done?

What is the torque of a force F=(2ˆi−3ˆj+4ˆk )  Newton acting at a point r=(3ˆi+2ˆj+3ˆk ) meter about the origin?

Given: →a+→b+→c=0 Out of the three vectors →a, b→ and c→ two are equal in magnitude. The magnitude of the third vector is √2 times that of either of the two having equal magnitude. The angles between the vectors are

A curve is governed by the equation y=sinx, then what is the area enclosed by the curve and x-axis between x =0 and x =π is (shaded region)

. The displacement of particle is zero at t=0 and at t=t it is x. It starts moving in the x direction with velocity, which varies as v=k√x, where k is constant. The velocity-

Two forces A and B have a resultant R₁R1. If B is doubled, the new resultant R₂R2 is perpendicular to A. Then

The dimension of ∫_u^vmvdv is

The volume flow rate of water flowing out of a tubewell is given by Q = (3t² – 4t  +1) m³/sec. What will be the volume of water flown out of the tubewell in the 3rd sec if the volume flow rate is defined as Q = dV/dt?

Which of the following graphs gives the equation x=v₀t+1/2at²

A man leaves home for a cycle ride and comes back home after an half-an-hour ride covering a distance of one km. What is the average velocity of the ride?

Which of the following is not possible for a body in uniform motion?

A body covers 16, 18, 20, 22 meters in 5th, 6th, 7th and 8th seconds respectively. Which of the following statements is true about the body?

A boy standing at the top of a tower of 20 m height drops a stone. Assuming g=10 ms−2, the velocity with which it hits the ground is :

A bus is moving with a speed of 10 m/s  on a straight road. A scooterist wishes to overtake the bus in 100 s If the bus is at a distance of 1 km from the scooterist, with what minimum speed should the scooterist chase the bus?

What will be the shape of the x→y graph, if the relation between time and displacement of the moving body is t = 2αx² where α is constant

Which of the following statement is true if a body moves in a semicircular track whose radius is R

A particle with radius R is moving in a circular path with constant speed. The time period of the particle is T. Calculate the time for the following after t=T/6. What is the average velocity of the particle

A body is projected with velocity 20√3 m/s with an angle of projection 60° with horizontal. Calculate velocity on that point where body makes an angle 30° with the horizontal.

Two racing cars of masses m₁ and m₂ are moving in circles of radii r₁ and r₂ respectively. Their speeds are such that each makes a complete circle in the same duration of time t. The ratio of the angular speed of the first to the second car is 

A particle P is moving in a circle of radius ‘a’ with a uniform speed v. C is the centre of the circle and AB is a diameter. When passing through B the angular velocity of P about A and C are in the ratio

Certain neutron stars are believed to be rotating at about 1 rev/sec. If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be 

What will be the flux coming out of any surface a cube, if a change QμC is placed at the centre of the cube?

The coordinates of a moving particle at any time ‘t’ are given by x = αt³ and y = βt³. The speed of the particle at time ‘t’ is given by 

An aeroplane is flying horizontally with a velocity u = 600 km/h at a height of 1960 m. When it is vertically at a point A on the ground, a bomb is released from it. The bomb strikes the ground at point B. The distance AB is

A particle projected with kinetic energy k0k0 with an angle of projection θθ. Then the variation of kinetic K with vertical displacement y is

The mathematical representation of the force of attraction between the plates of the parallel plate capacitor is given as

If E be the electric field inside a parallel plate capacitor due to Q and -Q charges on the two plates, then electrostatic force on plate having charge -Q due to the plate having charge +Q will be

The electric potential V at any point O (x, y, z all in metres) in space is given by V=4×2 volt. The electric field at the point (1m, 0, 2m) in volt/metre is –

Two spheres A and B of radius 4 cm and 6 cm are given charges of 80 μc and 40μc respectively. If they are connected by a fine wire, the amount of charge flowing from one to the other is –

To charges q₁ and q₂ are placed 30 cm apart, shown in the figure. A third charge q₃ is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is q3/4πε0 k, where k is

The capacity of a condenser is 4 × 10^–6 farad and its potential is 100 volts. The energy released on discharging it fully will be –

A parallel plate capacitor of capacity C₀ is charged to a potential V₀

(i) The energy stored in the capacitor when the battery is disconnected and the separation is doubled E₁

(ii) The energy stored in the capacitor when the charging battery is kept connected and the separation between the capacitor plates is doubled is E₂. Then E₁ / E₂ value is

As in the figure shown, if a capacitor C is charged by connecting it with resistance R, then energy given by the battery will be

If 97.52 is divided by 2.54, the correct result in terms of significant figures is

For a hollow spherical shell, potential, V changes with respect to distance, r from the centre. Which graph from the following represents this?

The plates of a parallel plate capacitor of capacity of 50 µF are charged by a battery to a potential of 100 volt. The battery remains connected the plates are separated from each other so that the distance between them is doubled. Then, the energy spent by battery in doing so, will be

Two small magnets each of magnetic moment 10 Am² are placed in end on position 0.1 m apart from their centres. The force acting between them is

Four point + ve charges of same magnitude (Q) are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to Z-axis. If a -ve point charge is placed at a distance z away from the above frame (z < < l) then

Power dissipated across the 8 Ω resistors in the circuit shown here is 2W. The power dissipated in watt units across the 3 Ω resistors is

Figure shows three spherical and equipotential surfaces A, B and C round a point charge q. The potential difference V_A − V_B = V_B − V_C. If t₁  and t₂  be the distance between them. Then

The electric potential at a point in free space due to a charge Q coulomb is Q x 10¹¹ V. The electric field at that point is

The decimal equivalent of 1/20 up to three significant figures is

Two solutions of a substance (non electrolyte) are mixed in the following manner. 480 ml of 1.5 M first solution + 520 ml of 1.2 M second solution. What is the molarity of the final mixture ?

3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is :

A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g. of CO₂. The empirical formula of the hydrocarbon is :

Which has the maximum number of molecules among the following ?

Arrange the following in the order of increasing mass (atomic mass: O = 16, Cu = 63, N = 14)
I. one atom of oxygen
II. one atom of nitrogen
III. 1 × 10–10 mole of oxygen
IV. 1 × 10–10 mole of copper

The normality of 26% (wt/vol) solution of ammonia (density = 0.855 ) is approximately :

Given the numbers : 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers are

The frequency of light emitted for the transition n = 4 to n = 2 of the He+ is equal to the transition in H atom corresponding to which of the following?

Which one of the following sets of ions represents a collection of isoelectronic species?

Quantum numbers of an atom can be defined on the basis of

The electrons, identified by quantum numbers n and l (i) n = 4, l = 1 (ii) n = 4, l = 0 (iii) n = 3, l = 2 (iv) n = 3, l = 1 can be placed in order of increasing energy, from the lowest to highest, as

How many electrons can fit in the orbital for which n = 3 and l = 1?

Two electrons occupying the same orbital are distinguished by

In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen?

Which of the following electronic configuration is not possible?

Which of the following atoms has the highest first ionization energy?

Which of the following statements about modern periodic table is incorrect?

IUPAC name of element having atomic number 108 is

Of the following, which one is a correct statement?

Pd has exceptional electronic configuration of 4d¹⁰ 5s⁰. It belong to

Which of the following statement is incorrect?

The least electronegative element has the following electronic configuration

Identify the wrong statement in the following.

The geometry of ClO₃^– according to valence shell electron pair repulsion (VSEPR) theory will be

Which of the following molecule has highest dipole moment?

Which one of the following properties is not shown by NO?

The number of types of bonds between two carbon atoms in calcium carbide is

Which one of the following statements is not correct for sigma- and pi-bonds formed between two carbon atoms?

The BCl₃ is a planar molecule whereas NCl₃ is pyramidal because

In BrF₃ molecule, the lone pairs occupy equatorial positions to minimize

What is the molarity of H2SO4 solution, that has a density 1.84 gm/cc at 35ºC and contains 98% by weight of solute?

According to Raoult’s law, the relative lowering of vapour pressure for a solution is equal to

Which of the following compounds can be used as antifreeze in automobile radiators?

A solution of acetone in ethanol 

Which of the following is dependent on temperature?

Mass of NaCl required to prepare 0.01 m aqueous solution in 1 kg water is

The van’t Hoff factor i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively

An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to

The weight of silver (At. Wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

The hydrogen electrode is dipped in a solution of pH = 3 at 25°C. The reduction potential of the electrode would be