Grand Test 1 for NEET 2022 Copy

Select the  correct  statement  regarding Periplaneta americana

In one plant adventitious roots are modified for storage and in other plant a lateral branch with short internodes and each node bearing a rosette of leaves and tuft of roots is found.They are

Find the wrong statement about the secretion of Stomach

Which of the following is correct?

If uncertainty in position and momentum are equal, then uncertainty in velocity is

The correct order of C ̶  O bond length among CO, CO₃^2-,CO₂ is

A. CO < CO₃^2- <CO₂

B. CO₃^2- < CO₂ <CO

C. CO < CO₂ < CO₃^2-

D. CO₂ < CO₃^2- <CO

Which of the following carbonyl compounds will form carbanion most readily?

A truck and a car are moving with equal velocity. If equal retarding force is applied on each, then on applying the brakes both will stop after certain distance 

The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is 

In human fibrous cartilage is found abundantly

Match the terms (given in column I) with their explanation

(given in column II) and choose the correct combination

from the options given below

How many of the following do possess opposite phyllotaxy among them -China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium(oleander)

Select the incorrect statement –

Which of the following is incorrect about the enzyme, type of secretion

and substrate?

Which of the following is incorrect about Oxy-haemoglobin curve?

The measurement of the electron position is associated with an uncertainty in momentum , which is equal to 1 * 10^-18 gcm s^-1. The uncertainty in electron velocity is , (mass of an electron is 9*10^-28 g)

A. 1*10¹¹ cm s^-1

B. 1*10⁹ cm s^-1

C. 1*10⁶ cm s^-1

D. 1*10⁵ cm s^-1

In a regular octahedral molecule , MX6 thee number of X ̶ M  ̶  X bonds at 180° is

A. Three

B. Two

C. Six

D. Four

Which of the following can be appliedto explain relative order of stability of carbocations?

A point mass m is suspended from a light thread of length l, fixed at O, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are

A rocket with a lift-off mass 3.5 × 10⁴ kg is blasted upwards with an initial acceleration of 10 m/s². Then the initial thrust of the blast is

(A) 1.75 × 10⁵ N

(B) 3.5 × 10⁵ N

(C) 7.0 × 10⁵ N

(D) 14.0 × 10⁵ N

Which of the following statement is incorrect regarding cuboidal epithelium ?

‘X’ ensures the production of ‘Y’ phase in the life cycle of

sexually  reproducing  organisms  whereas  fertilization

restores the ‘Z’ phase.

Iden tify X,  Y an d Z.

Leaf tendrils are found in-

1. Mycoplasma is the smallest cell (0.3 ~L m in length)
2. Cytoplasm is the main arena of cellular activities
3. Nerve cells are some of the smallest cells
4. Various physical reactions occur in cytoplasm to keep the cell in the living state

Which of the following Is wrong about chylomicrons?

At what partial pressure of oxygen 50% of hemoglobin molecules of RBC

get saturated, under normal conditions?

For which of the following sets of four quantum numbers , an electron will have the highest energy ?

n          l           m        s

A.3 2          1          +1/2

B.4 2          -1        +1/2

C.4 1          0          -1/2

D.5 0          0          -1/2

In which of the following molecules / ions BF₃, NO₂^–, NH₂^– and H₂O , the central atom is sp² hybridized ?

A. BF₃ and NO₂^–

B. O₂^– and NH₂^–

C. NH₂^– and H₂O

D. NO₂^– and H₂O

If the carbocation   rearranges to gain stability , it will rearrange to

If a cyclist moving with a speed of 4.9 m/s on a level road can take a sharp circular turn of radius 4 m, then coefficient of friction between the cycle tyres and road is 

A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is 

The following events occur during the process of meiosis.

Arrange the following events of meiosis in the correct

sequence.

I. Terminalization

II. Crossing over

III. Synapsis

IV. Disjunction of genomes

120 phyllotaxy is found in –

Which of the following statement is not concerned with fluid mosaic model

of plasma membrane?

A patient of diabetes mellitus excretes glucose in urine even when he is

kept on a carbohydrate free diet. The most likely reason for that

Which of the following is false regarding the regulation of respiration?

Uncertainity in position of an electron (mass = 9.1 * 10^-28 g) moving with a velocity of 3 * 10⁴ cm/s accurate upto 0.001% will be (Use h/(4∏) in uncertainty expression where h = 6.626 * 10-27 erg-second)

According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order?

A. N₂^– < N₂^2- < N₂

B. N₂^– < N₂ < N₂^2-

C. N₂^2- < N₂^– < N₂

D. N₂ < N₂^2- < N₂^–

Which of these shows incorrect representation of inductive effect?

If the tension in the cable of 1000 kg elevator is 1000 kg weight, the elevator 

Number of  bivalents  are  8  in  prophase    What  is  the

number of chromosomes during anaphase II ?

In pitcher plant, lid of pitcher is formed with-

Which one is correct about the bacterial cell envelope?

After digestion the passively absorbable substance is

Which antibody is reaction is associated with the disease asthma?

The radius of hydrogen atom in the ground state is 0.53 Å. The radius of Li2+ ion (atomic number = 3) in a similar state is

In the case of alkali metals , the covalent character decreases in the order

Hyperconjugation is most useful for stabilizing which of the following carbocations?

An object with a mass 10 kg moves at a constant velocity of 10 m/sec. A constant force then acts for 4 second on the object and gives it a speed of 2 m/sec in opposite direction. The acceleration produced in it, is 

A triploid nucleus cannot undergo meiosis because

Whorled phyllotaxy is found in-

Lipids are arranged within the membrane with –

Which of the following can alter respiratory mechanism?

A transition element X has a configuration (Ar)3d⁴ in its +3 oxidation state. Its atomic number is

The state of hybridization of C₂, C₃, C₅ and C₆ of the hydrocarbon,

Is in the following sequence

Heterolytic fission of  a covalent bond  in organic molecules gives

A block (B) is attached to two unstretched springs S1 and S2 with spring constants k and 4k, respectively (see figure I). The other ends are attached to identical supports M1 and M2 not attached to the walls. The springs and supports have negligible mass. There is no friction anywhere. The block B is displaced towards wall 1 by a small distance x (figure II) and released. The block returns and moves a maximum distance y towards wall 2. Displacements x and y are measured with respect to the equilibrium position of the block B. The ratio y/x is 

Which of  the  following  statement(s)  regarding  cell junctions is/are correct ?

Which one of the following precedes re-formation of the

nuclear envelope during M phase of the cell cycle ?

Example of sessile leaves are

Which of the following is the correct sequence of route of the secretory
product?

Vomitting centre is present in

Each 100 ml of human arterial blood carries ‘P’ ml of o2 and ‘Q’ ml of co2
whereas each 100 ml of venous blood carries ‘R’ ml of 0 2 and ‘S’ ml of C02.
Choose the correct value of P, Q, Rand S

What will be the longest wavelength line in Balmer series of spectrum?

Which one of th following species doess not exist under normal conditions?

A. Li₂

B. Be₂⁺

C. Be₂

D. B₂

A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is

A bob of mass M is suspended by a massless string of length L. The horizontal velocity V at position A is just sufficient to make it reach the point B. The angle θ at which the speed of the bob is half of that at A, satisfies

Figure:

It is important that the centromere not divide till the end

of metaphase because it

All of the following are tap root except-

I. Cilium/Flagellum contains an outer ring of nine doublet microtubules

surrounding two singlet microtubules

II. Cilia are smaller which works like oars, causing the movement of either

the cells or surrounding fluid

Ill. Flagella are comparatively longer and responsible for cell movement.

IV Cilium and flagellum are covered with plasma membrane

Which of the above statement is correct?

Kwashiorkor disease is due to

Oxygen dissociation curve is

In Bohr’s model of an atom, when an electron jumps from n = 1 to n = 3 , how much energy will be eemitted or absorbed ?

A. 389 * 10^-12 ergs

B. 239 * 10^-10 ergs

C.15 * 10^-11 ergs

D.1936 * 10^-10 ergs

In which of the following pairs of molecules / ions , the central atoms have sp² hybridization ?

A. BF₃ and NH₂^–

B. NO₂^– and NH

C. BF₃ and No₂^–

D. NH₂^– and H₂O

The three vectors A = 3i-2j + k, B = i-3j + 5k and C = 2i + j-4k form

A block of mass 0.50 kg is moving with a speed of 2.00 ms^–1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

In animal cells, cytokinesis involves

All of the following are correct with respect to different region of root except-

The inner and outer nuclear membranes of nuclear envelope can be

differentiated in that-

Activation of chymotrypsinogen into chymotrypsin is caused by

Dissociation of CO2 from carbamino-haemoglobin takes place when

The electronic configuration of gadolinium (Atomic no. 64) is

A. [Xe]4f³ 5d⁵ 6s²

B. [Xe]4f⁶ 5d² 6d²

C. [Xe]4f⁸ 5d⁹ 6s²

D. [xe] 4f⁷ 5d¹ 6s²

In which of the following molecules the central atom does not have sp3 hybridization ?

A. CH₄

B. SF₄

C. BF₄^–

D. NH₄⁺

A rocket is fired upward from the earth surface such that it creates an acceleration of 19.6 m/s². If after 5 s, its engine is switched off, the maximum height of the rocket from earth’s surface would be

A physical quantity Q is found to depend on observables x, y and z, obeying relation . The percentage error in the measurements of x, y and z are 1%, 2% and 4% respectively. What is percentage error in the quantity Q?

Which of  the  following  types  of  connective  tissue  is Mismatched with its matrix ?

The major  event  that  occurs  during  the  anaphase  of

mitosis,  which  brings  about  the  equal  distribution  of

chromosomes is

Find mismatch regarding tendril-

Cell organelle that divides intracellular space of a cell into two
compartments luminal space and extra luminal spaces –

Which layer of gastrointestinal tract forms rugae in stomach and small
finger like foldings called villi in small intestine?

The amount of zinc required to produce 224 ml of H₂ at STP on treatment with dilute H₂SO₄ will be

1. The ion that is isoelectronic with CO is

A. CN^–

B. N2⁺

C. O2^–

D. N2^–

Some of the properties of the  two species , NO3- and H3O+ are described below. Which one of them is correct?

If A = 4i + 4j + 4k and B = 3i + j + 4k, then angle between vectors A and B is

If n denotes a positive integer, h the Planck’s constant, q the charge and B the magnetic field, then the quantity  has the dimension of

Find mismatch with respect to function-

Actively functional nucleus shows-
(a)
(b)
(c)
(d)

Which of the following is an incorrect statement?

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

1. The Bohr orbit radius for the hydrogen atom (n = 1) iss approximately 0.530 Å. The radius for the first excited state (n = 2) orbit is (in Å)

A. 77

B. 06

C. 13

D. 12

How many σ and ∏ bonds are present in the following molecule:

The diameter of a cylinder is measured using a Vernier callipers with no zero error. It is found that the zero of the Vernier scale lies between 5.10 cm and 5.15 cm of the main scale. The Vernier scale has 50 divisions equivalent to 2.45 cm. The 24^th division of the Vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is

How many of the following junctions are found in epithelium tissue :-

Tight junction, Gap junction, Adhering and Interdigitation.

Which of  the  following  cellular  structures  always

disappears during mitosis and meiosis?

All are examples of succulent leaves except-

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

Which is the correct sequence of air passages in man?

Haemoglobin contains 0.334% of iron by weight.The moleculer weight of haemoglobin is approximately 67200. The number of iron atoms (Atomic weight of Fe is 56) present in one molecule of haemoglobin is

1. The position of both , an electron and a helium atom is known within 1.0 nm. Further the momentum of the eelectron is known within 5.0 * 10-26 kg . ms-1. The minimum uncertainty in the measurement of the momentum of the helium atom is

A. 8.0 * 10^-26 kg ms^-1

B. 80 kg ms^-1

C. 50 kg ms-1

D. 5.0 * 10-26 kg ms^-1

The IUPAC name of the following compound is

For a rocket moving in free space, the fraction of mass to be disposed of Off to attain a speed equal to two times the exhaust speed is given by (given e2 = 7.4)

In the determination of Young’s modulus  by using Searle’s method, a wire of length L = 2 m and diameter d = 0.5 mm is used. For a load M = 2.5 kg, an extension l = 0.25 mm in the length of the wire is observed. Quantities d and l are measured using a screw gauge and a micrometer, respectively. They have the same pitch of 0.5 mm. The number of divisions on their circular scale is 100. The contributions to the maximum probable error of the Y measurement

Select the correct option about given diagram

During  mitosis,  nuclear  envelope,  nucleolous  begin  to

form and ER to reappear at ______

Cell theory was proposed by –

Find the mismatched

Which is correct about nasopharynx?

In the reaction

4NH₃(g) + 5O₂(g) –>  4NO(g) + 6H₂O(l)

When 1 mole of ammonia and 1 mole of O2 are made to react to completion

1. Among the following which one is not paramagnetic ? [Atomic numbers ; Be = 4 , Ne = 10, As = 33,  Cl = 17]

A. Ne²⁺

B. Be+

C. Cl^–

D. As⁺

What is the shape of HCHO?

The value of M of the hanging block is in the figure, which will prevent the smaller block (m=1 kg) from slipping over the triangular block. All the surfaces are smooth and string and pulley are ideal. (Given: M’=4 kg and θ=370)

Two full turns of the circular scale of a screw gauge cover a distance of 1 mm on its main scale. The total number of divisions on the circular scale is 50. Further, it is found that the screw gauge has a zero error of −0.03 mm. While measuring the diameter of a thin wire, a student notes the main scale reading of 3 mm and the number of circular scale divisions in line with the main scale as 35. The diameter of the wire is 

An example of edible underground stem is-

   Protein synthesis in an animal cell occurs

Which of the following is odd about findings of mucous layer?

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

An organic compound containing C, H and N gave the following analysis C = 40%, H = 13.33% ,N= 46.67%. Its empirical formula would be

Which of the following configuration is correct for iron ?

A. 1s²2s²2p⁶3s²3p⁶4s²3d⁷

B. 1s²2s²2p⁶3s²3p⁶4s²3d⁵

C.1s²2s²2p⁶3s²3p⁶4s²3d⁵

D. 1s²2s²2p⁶3s²3p⁶4s²3d⁶

Write formulas for the first three members of the homologous series beginning with

A lighter body and heavier body both are moving with same momentum and applied same retarding force. Their stoping distances are s1 and s2s1 and s2 respectively. Then the correct relation between s1 and s2s1 and s2-

The dimension of magnetic field in M, L, T and C (Coulomb) is given as

(A) MLT^–1C^–1

(B) MT²C^–2

(C) MT^–1C^–1

(D) MT^–2C^–

1. Mesothelium is : –

Leafy green stems of limited growth modified to perform photosynthesis are called-

Choose the wrong statements regarding bacterial cell

(i)    Glycocalyx is the outermost envelope in bacteria.

(ii)  The  glycocalyx  could  be  a  loose  sheath  called

capsule.

(iii) The glycocalyx may be thick and tough called slime

layer.

(iv)  A special structure formed by the plasma membrane

is  called  mesosome.

(v)   Small  bristle-like  fibres  sprouting  out  of  the  cell

are called fimbriae

Find the correct statement regarding the salivary glands

Which of the following statements about the mechanism of ventilation In
breathing is false?
A.
B. During inspiration the lungs act as suction pump
C. Inspiration is a passive and expiration is an active process.@
D. For normal breathing external intercostal muscles and diaphragm
play an important role

How many g of dibasic acid (mol. Weight 200) should be present in 100 ml.of the aqueous solution to give strength of 0.1 N?

In which of the following molecules are all the bonds not equal?

A. NF₃

B. CIF₃

C.BF₃

D. AIF₃

In the organic compound

The pair of  hybridized orbitals involved in the formation of C2 ̶C3 bond is

Five persons A, B, C, D & E are pulling a cart of mass 100 kg on a smooth surface and the cart is moving with acceleration 3 m/s2 in east direction. When person ‘A’ stops pulling, it moves with acceleration 1 m/s in the west direction. When person ‘B’ stops pulling, it moves with acceleration 24 m/s2 in the north direction. The magnitude of the acceleration of the cart when only A & B pull the cart keeping their directions same as the old directions are:

Three blocks A, B and C of masses 4 kg, 2 kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is

Which statement regarding anal cerci and anal style in cockroach is correct?

Find incorrect match-

1. Read the statements about saliva
2. saliva helps in lubricating and adhering the masticated food particles

into a chyme

2. About 60 per cent 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?

If residual volume is 1200 ml, expiratory reserve volume is 1100 ml, Tidal
volume is 500 ml inspiratory reserve volume is 3000 ml then find out
functional residual capacity of this person
A.
B.  @
C.
D.

Which one of the following is not isoelectronic with O^2-?

In which of the following pairs, the two species are iso-structural?

A. SO^2-₃ and NO₃^–

B. BF₃ and NF₃

C. BrO₃^– and XeO₃

D. SF₄ and XeF₄

The number of resonancecontributing structures for the following compound is

A body moves along an uneven surface with constant speed at all points.

The normal reaction due to ground on the body is :

A plank with a box on it at one end is gradually raised about the other end. As the angle of inclination with the horizontal reaches 30º, the box starts to slip and slides 4.0 m down the plank in 4.0 s. The coefficients of static and kinetic friction between the box and the plank will be, respectively