E2II PART TEST 3 For NEET 2023

1.Mechanisms of breathing vary among different groups of animals depending mainly on

2.Sponges exchange O₂ with CO₂ by

3.Branchial respiration refers to respiration by

4.___________ prevent the entry of food into the larynx

5.Incomplete cartilaginous rings support the respiratory tube up to

6.The function of Pleural fluid is

7.The part of human respiratory system that humidifies air and bring the air to body temperature

8.The lungs are situated in the thoracic chamber which is anatomically

9.Which of the following statement(s) is/are true regarding inspiration?

I.Relaxation of the diaphragm and the inter-costal muscles returns the diaphragm and sternum to their normal positions and reduce the thoracic volume and thereby the pulmonary volume

II.An increase in intra-pulmonary pressure to slightly above the atmospheric pressure causes the expulsion of air from the lungs

III.The contraction of external inter-costal muscles lifts up the ribs and the sternum causing an increase in the volume of the thoracic chamber in the dorso-ventral axis

IV. An increase in pulmonary volume decreases the intra-pulmonary pressure to less than the atmospheric pressure which forces the air from outside to move into the lungs

10.The strength of inspiration and expiration can increased by

11.The amount of additional volume of air, a person can inspire by a forcible inspiration is

12.All are inclusive for Vital capacity except?

13.CO₂ is carried by haemoglobin as carbamino-haemoglobin, this binding is related to

14.Which of following statement is incorrect about the transportation of gases?

15.One of the major causes of this is cigarette smoking is

16.Identify the following parts in the given diagram

17.Slime layer is composed of

18.No organelles, like the ones in eukaryotes, are found in prokaryotic cells except for

19.Several ribosomes may attach to a single mRNA and form a chain called

20.Which of the following is the function of Inclusion bodies?

21.In fluid- mosaic model of the membrane

22.Which of the following statement is correct for the endoplasmic reticulum( ER )

23.Which of the following cell components is not a part of the cytoskeleton of eukaryotic cells?

24.The cristae increase

25.Svedberg’s Unit is

26.The electron microscopic study of a cilium or the flagellum shows that they are covered with plasma membrane. Their core called

27.Which of the following vascular plant cells have no nucleus in their matured stage?

28.Sometimes a few chromosomes have non-staining secondary constrictions at a constant location, it is called

29.All are true except?

30.All Lysosomal enzymes are active in

31.An ionic compound A⁺B^– is most likely to be formed from A and B when:

32.Which pair is not correct order of lattice energy?

33.Solubility of NaCl, Na₂SO₄ and Na₃PO₄ in water n increasing order is:

34.Which of the following compounds has both ionic and covalent bonding?

35.The maximum covalency is equal to the number of

36.The As-Cl bond distance in AsCl3 in 2.20 Å. If radius of chlorine atom is 0.99 Å then radius of As atom is:

37.Which of the following has maximum number of lone-pairs of electrons on the central atom?

38.Geometrical configuration of BF₃ and NF₃ molecules is:

39.The angle between the bonding orbitals of a molecules AX₃ with zero dipole moment is,

40.PCl₅ has a shape of trigonal bipyramidal whereas IF₅ has the shape of a square pyramid. It is due to,

41.The bond angle in H₂O is 105^o and in H₂S it is 90^o. It is due to to:

42.In CH≡C-CH=CH₂, type of overlapping in (C₂ σ C₃) bond is:

43.Which pair of substances will have the most similar geometry?

44.A diatomic molecule has a dipole moment of 1.2 D. If the bond distance is 1.0 Å, fraction of an electronic charge on each atom is:

45.Which property is not due to H-bonding?

46.In which of the following molecules would you expect the nitrogen-to-nitrogen bond to be the shortest?

47.MgSO₄ is soluble while BaSO₄ is insoluble in H₂ This is due to:

48.Bond order of O₂, O₂⁺ and O₂^– and O₂^2- is in the order:

49.Polarizing action of Cd²⁺ on anions is stronger than that of Ca²⁺ because,

50.The formal charge of the O atoms in the ion NO₂⁺ is

51.In a reaction KCl converted into KClO₄, change in oxidation number of Cl is,

52. For the reaction,

I-+ClO3-+H2SO4→ Cl-+HSO4-+I2

The incorrect statement of the balanced equation is

53.The species that undergoes disproportionation in an alkaline medium is,

54.A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

55.575 g of a dibasic acid requires 0.025 equivalent of NaOH. Hence, molar mass (g/mol) of dibasic acid is

56.1 mol of ferrous oxalate is oxidized by x mol of MnO₄^– in acidic medium. x is,

57.If a small amount of KMnO₄ is added to conc. H₂SO₄, a green colored solution with oxidation number of Mn as +7 is formed, Probable compound is,

58.H₂S₂O₈ and H₂SO₅ both have +6 oxidation state of sulphur. It is due to

59.The standard reduction potentials of Cu²⁺/Cu and Cu⁺/Cu are 0.339 V and 0.518 V respectively. The standard electrode potential of Cu²⁺/Cu⁺ half-cell is,

60.If Sn²⁺ + 2e → Sn, E^o = – 0.14 V and Sn⁴⁺ + 2e → Sn²⁺, E^o = 0.13 V, then

61.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)

62.The length of a spring is l1 and l2 when stretched with a force of 4 N and 5 N respectively. Its natural length is?

63.A simple pendulum hangs from the roof of a train moving on horizontal rails. If the string is inclined towards the front of the train, then train is-

64.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=37^0)

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

66.A plastic box of mass 5 kg is found to accelerate up at the rate of g / 6, when placed deep inside the water. How much sand should be put inside the box so that it may accelerate down at the rate of g/6?

67.The graph for stopping time (t) versus mass (m) is shown in the figure. Then which one of the pair is given

68.Tension on the string at point P is T. The graph for tension (T) versus x is shown in the figure. Then the string is:

69.. While walking on ice one should take small steps to avoid slipping. This is because smaller steps ensure

70.Forces of 1 N and 2 N act along with the lines x = 0 and y = 0. The equation of the line along which the resultant lies is given by

71.A block is kept on a rough inclined plane with angle of inclination θ. The graph of net reaction (R) versus θ is:

72.A particle is moving in a vertical circle. The tension in the string when passing through two positions at angle of 30° and 60° from vertical (the lowest position) are T1 and T2 respectively, then:

73.A motorcycle is going on an overbridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the overbridge, the normal force on it:

74.Two blocks ‘A’ and ‘B’ each of mass ‘m’ are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on both the blocks ‘A’ and ‘B’ respectively as shown in figure. The block A does not slide on block B. Then the normal reaction acting between the two blocks is:

75.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/s2 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:

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

The normal reaction due to ground on the body is :

77.A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/sec. A plumb bob is suspended from the roof of the car by a light rigid rod of length 1.00 m. The angle made by the rod with the track is

78.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 

79.A constant force acts on a body of mass 0.9 kg at rest for 10s. If the body moves a distance of 250 m, the magnitude of the force is 

80.A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is  

81.A car sometimes overturns while taking a turn. When it overturns, it is 

82.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

83.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 

84.A mass is supported on a frictionless horizontal surface. It is attached to a string and rotates about a fixed centre at an angular velocity ω₀. If the length of the string and angular velocity are doubled, the tension in the string which was initially T₀ is now 

85.

Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in horizontal circles centred at O. If the velocity of the outermost particle is v₀, then the ratio of tensions in the three sections of the string is 

86.A bucket tied at the end of a 1.6 m long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position (Take g = 10 m/s²) 

87. A 1 kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed of 4 m/sec. The tension in the string is 6 N, when the stone is at (g = 10 m/sec²) 

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

89.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 

90.

In the above diagram, the acceleration of the car will be