E2IIPart Test 1 For NEET 2023

13.If the angle between the vector →A and →B is  θ, the value of the product (→B×→A).A→ is equal to:

14.Assertion: The graph between P ans Q is a straight line when P/Q is constant

Reason: The straight-line graph means that P proportional to Q or P is equal to constant multipled by Q.

Choose any one of the following four responses:

15.Two forces are such that the sum of their magnitudes is 18 N and their resultant is perpendicular to the smaller force and magnitude of resultant is 12 N. Then the magnitudes of the forces are 

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

17.In the given figure

18.

Which of the sets given below may represent the magnitude of resultant of three vectors adding to zero?

19.A blind person after walking 10 steps in one direction, each of length 80 cm, turns randomly to the left or to the right by 90°. After walking a total of 40 steps the maximum possible displacement of the person from his starting position could be –

20.

The resultant of two vectors A and B is perpendicular to the vector A and its magnitude is equal to half the magnitude of vector B. The angle between A and B is –

21.. The three vectors OA, OB and OC have the same magnitude R. Then the sum of these vectors have magnitude –

22. Angular momentum is

23.What is the minimum number of coplanar vectors with different magnitudes that can be added to get a resultant of zero?

24.What is the vertical component of the force 5 N acting on a particle along a direction making an angle of 60⁰?

25.A truck travelling due north with 20m/s turns towards west and travels at the same speed. Then the change in velocity is –

26.A particle is moving in a circle of radius r centered at O with constant speed v. The change in velocity moving from A to B (∠AOB=40°) is –

27.If the angle between vector a and b is an acute angle, then the difference a−-b is –

28.What displacement must be added to the displacement 25 ˆi−6 ˆj to give a displacement of 7.0 m pointing in the x-direction?

29. A child pulls a box with a force of 200 N at an angle of 60° above the horizontal. Then the horizontal and vertical components of the force are –

30. If the angle between the unit vectors a^ and b^ is 60°, then ∣ˆa−ˆb∣ is :

31.17.675 is rounded off to four significant figures as:

32.The density of silver is 10.5 g/cm³. This value in kg/m³ would be:

33.Mass of an atom of the element X is 1.66×10^-24 g. Number of atoms in 1g of the element is:

34.Equal moles of H₂O and NaCl are present in a solution. Hence, molality of NaCl solution is

35.1 mole of SO₂ and 1 mole of H₂S react completely to form: 

    SO₂+2H₂S→2H₂O+3S    (S=32, O=16)

36.A solution containing 145.0 g AgNO₃ is mixed with CaCl₂ solution and 98.4 g of AgCl is recovered. Calculate the % yield of the reaction.

37.SI unit of pressure is:

38.. Which of the following sample contains largest number of atoms?

39.An ore contains 1.34% of the mineral argentite, Ag₂S, by mass. How many gram of this ore would have to be processed in order to obtain 1 g of pure solid silver, Ag?

40. An aqueous solution has molality 11.11. Hence, mole fraction of solvent in solution is:

41. The reaction between Yttrium metal Y and dilute hydrochloric acid produces H₂(g) and Y³⁺ ions. The molar ratio of Y used to produce hydrogen is:

42.A concentration of 1 ppb means that

43. [Na⁺] in a solution prepared by mixing of 30.00 mL of 0.12 M NaCl with 70 mL of 0.15 M Na₂SO₄ is:

44. In the combustion of 5.00 g a metal, 9.44 g of metal oxide are formed. Hence, equivalent mass of the metal is:

45. 800 g of a 40% solution by weight was cooled. 100 g of solute precipitated. The percentage composition of remaining solution:

46.How many grams of CH₃OH would have to be added to water to prepare 150 mL of a solution that is 2.0 M CH₃OH

47.Which statement regarding the mole is NOT correct?

48.. Sulphur forms the chlorides S₂Cl₂ and SCl₂; the equivalent mass of the sulphur in SCl₂ is 16 g equivalent^-1. Thus, equivalent mass of sulphur in S₂Cl₂ is:

49.In the reaction, Cr₂O₇^2- + 3H₂SO₃ + 5H⁺ → 2Cr³⁺ + 3HSO^–₄ + 4H₂O, ratio of equivalents of Cr₂O₇^2- and H₂SO₃ is:

50.1 g of a carbonate (M₂CO₃) on treatment with excess HCl produces 0.01186 mole of CO₂. The molar mass of M₂O₃ in g mol^-1 is:

51.How many moles of HCl will be present in 100 mL of a solution of specific gravity 1.08, containing 20% HCl by mass?

52.Equal mass of ethane and hydrogen re mixed in an empty vessel at 25 ^oC. The fraction of total pressure exerted by hydrogen is:

53.The minimum quantity of quantity in grams of H₂S needed to precipitate 63.5 g of Cu²⁺ will be nearly

54. 5.85 g of NaCl is dissolved in 1L of pure water. The number of ions in 1 mL of this solution is:

55.When 1L of CO₂ is heated with graphite, the volume of the gases collected is 1.5 L. Calculate the number of moles of CO produced at STP.

56.1.0×10^-3 mol of Ag⁺ and 1.0×10^-3 mol of CrO₄^2- react together to form solid Ag₂CrO₄. Calculate the amount of Ag₂CrO₄  formed. (Ag₂CrO₄ = 331.73 g mol^-1)

57.. What is the volume of air required for complete combustion of 20 L of methane?

58.The amount of BaSO₄ formed upon mixing 100 mL of 20.8% BaCl₂ solution with 50 mL of 9.8% H₂SO₄ solution will be, (Ba = 137, Cl = 35.5)

59.11.2 L of a gas at STP weighs 14.0 g. The gas could be

60.The percentage of nitrogen in hydrides, as ammonia and hydrazine are experimentally found to be 82.35% and 87.5% respectively. The data proves that:

61.Which type of tissue incorrectly matches with its location?

      Tissue                                           Location

1.Compound             Skin

Epithelium

2.Squamous epithelium             Air sacs of the lungs

3.Dense regular             Cartilage                    

connective tissue

4.Areolar tissue             Beneath the skin

62.Between adjacent bones of the vertebral column there is

63.Chondrocytes constitute

64.In dense connective tissue

65.All are specialised connective tissue except?

66.

A in the above diagram refers to

67.The  function  of the  gap junction is to 

68.Cardiac muscles can contract in a unit because of

69.Match the following

Column I                                            Column II

1.Areolar tissue                a. Dense irregular tissue

2.Skin                           b.Support framework

3.Cuboidal epithelium  c.Diffusion boundary

4. Squamous epithelium   d.Absorption

70.Assertion: Neural tissue exerts the greatest control over the body’s responsiveness to changing conditions.

Reason: Neurons, the unit of neural system are excitable cells.

71.Given below is diagram of a certain type of tissue. Identify the parts labelled A,B,C,D and select the right option

72.Which of the following statement is incorrect?

73.Identify A,B,C,D in the below diagram

74.Which sterna forms a brood in female Periplaneta

75.Each segments of Periplaneta is covered by exoskeleton called

76.Which one is the false statement?

77.Spiracles are

78.Periplaneta has __________for gas exchange

79. Gas exchange in Periplaneta is a

80.Waste products of Periplaneta are absorbed by

81.All of them help in excretion in Periplaneta except?

82.The distribution of ganglia in Periplaneta is as follows

83.Assertion: If the head of the Periplaneta is cut off, it will survive for at least one week.

Reason: The head region of Periplaneta has supra-oesophageal ganglion connection and rest resides in the ventral region.

84.Ovaries of female Periplaneta lies on

85.Identify A-D

86.Cockroach receives several images of an object because it has

87.Match the structure with their location

Structure                                            Location

1.Hepatic caeca                  a.6^th segment

2.Spermatheca               b.9^th segment

3.Gonapophyses            c.Junction of fore gut and mid gut

4.1^st pair of wings                   d.       Mesothorax           

88.In male Periplaneta sperms are transferred through

89.Adult Periplaneta does not possess

90. Collateral glands are present in