E2IIPART TEST 5 for NEET 2022

1.Pollen sacs are developed from

2.Identify A and B in the following diagram

3.As the anthers mature and dehydrate, the microspores dissociate from each other and develop into _____________

4.Which of the following statements are correct

5.Sporopollenin is present in

6.Identify the following parts in the given diagram

7.The main allergic component of Parthenium is

8.Leguminoseae and Solanaceae, they maintain viability for

9.Megasporangia arise from

10.Identify A in then given diagram

11.Which of the following is correct for the large central cell in embryo sac?

12.At maturity a typical angiosperm embryo sac is

13.Autogamy does not include?

14.Pollination by wind is more common amongst ___________  pollinations

15.Pollen grains are transferred in Vallisneria through

16.Assertion: Mendel’s experiments had a large sampling size

Reason: It gave greater credibility to the data that he collected

17.Mendel conducted such artificial pollination/cross pollination experiments using

18.Identify the process being shown here

19.Mendel self-pollinated the tall F1 plants and observed the proportion of plants that were dwarf were

20.Which of the following statements are incorrect?

21.Theoretically, the modified allele could be responsible for production of

22.A total of six different genotypes of the human ABO blood types, this is an example of

23.Dominance depends on

24.In the dihybrid cross, the phenotypes round, yellow; wrinkled, yellow; round, green and wrinkled, green appeared in the ratio

25.Which of the following is true for a gene?

26.Chromosomal theory of inheritance was proposed by?

27.Human skin colour is another classic example for

28.For skin coloration, the genotype with three dominant alleles and three recessive alleles will have

29.All are Mendelian disorders except?

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30.Identify the disease manifested by the given phenomenon

31.The magnetic field of the earth can be modelled by that of a point dipole placed at the centre of the earth. The dipole axis makes an angle of 11.3° with the axis of the earth. At Mumbai, declination is nearly zero. Then,

32.In a permanent magnet at room temperature

33.Magnetic lines of force due to a bar magnet do not intersect because

34.Assertion : The ferromagnetic substance do not obey Curie’s law.
Reason : At Curie point a ferromagnetic substance start behaving as a paramagnetic substance

35.The coercivity of a small magnet where the ferromagnet gets demagnetized is 3 × 10³ Am^–1. The current required to be passed in a solenoid of length 10 cm and number of turns 100, so that the magnet gets demagnetized when inside the solenoid, is:

36.Assertion : A paramagnetic sample display greater magnetisation (for the same magnetic field) when cooled.
Reason : The magnetisation does not depend on temperature

37.The magnetic susceptibility is negative for

38.Two points A and B are situated at a distance x and 2x respectively from the nearer pole of a magnet 2 cm long. The ratio of magnetic field at A and B is

39.Assertion : Electromagnetic are made of soft iron.
Reason : Coercivity of soft iron is small.

40.  A magnetic needle of magnetic moment 6.7 × 10^–2 Am² and moment of inertia 7.5 × 10^–6 kg m² is performing simple harmonic oscillations in a magnetic field of 0.01 T. Time taken for 10 complete oscillations is :

41: A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from

42.The given figure represents a material which is

43.Whenever the magnetic flux linked with a coil changes, an induced e.m.f.is produced in the circuit. The e.m.f. lasts

I. for a short time
II. for a long time
III. so long as the change in flux takes place
The correct statement(s) is/are

44.The north pole of a bar magnet is moved towards a coil along the axis passing through the centre of the coil and perpendicular to the plane of the coil. The direction of the induced current in the coil when viewed in the direction of the motion of the magnet is 

45.If a current increases from zero to one ampere in 0.1 second in a coil of 5 mH, then the magnitude of the induced e.m.f. will be

46.A coil has 200 turns and area of 70 cm². The magnetic field perpendicular to the plane of the coil is 0.3 Wb/m² and take 0.1 sec to rotate through 180º.The value of the induced e.m.f. will be

47.A coil of resistance 20Ω and inductance 5H has been connected to a 200 V battery. The maximum energy stored in the coil is

48.A metallic ring is attached to the wall of a room. When the north pole of a magnet is brought near to it, the induced current in the ring will be 

49.A copper ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is-

50.As shown in the figure, a magnet is moved with a fast speed towards a coil at rest. Due to this induced electromotive force, induced current and induced charge in the coil is E, I, and Q respectively. If the speed of the magnet is doubled, the incorrect statement is 

51.A coil having 500 square loops each of the side 10 cm is placed normal to a magnetic field which increases at the rate of 1.0 tesla/second. The induced e.m.f. in volts is 

52.A conducting wire is moving towards right in a magnetic field B. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be 

53.A uniform electric field and a uniform magnetic field are acting in the same direction in a certain region. If a proton is projected in this region such that its velocity is pointed along the direction of fields, then the proton:

54.Which of the following graph correctly represents the variation of magnetic field induction with distance due to a thin wire carrying current?

55.When an electron enters perpendicularly in a magnetic field with velocity v, time period of its revolution is T. If it enters in the same magnetic field with a velocity 2v, then its time period will be:

56.A moving coil galvanometer has a resistance of 50 Ωand gives full scale deflection for 10 mA. How could it be converted into an ammeter with a full scale deflection for 1A :

57.A galvanometer having a resistance of 8 ohms is shunted by a wire of resistance 2 ohms. If the total current is 1 amp, the part of it passing through the shunt will be :

58.The ammeter A reads 2 A and the voltmeter V reads 20 V. the value of resistance R is (Assuming finite resistance’s of ammeter and voltmeter) 

59.Two straight horizontal parallel wires are carrying the same current in the same direction, d is the distance between the wires. You are provided with a small freely suspended magnetic needle. At which of the following positions will the orientation of the needle be independent of the magnitude of the current in the wires:

60.A vertical wire kept in Z-X plane carries a current from Q to P (see figure). The magnetic field due to current-carrying wire will have the direction at the origin O along :

61.How many EDTA molecules are required to make an octahedral complex with Ca²⁺ ion?

62.The type of isomerism in nitropentammninechromium(III) chloride is:

63.What is the shape of Fe(CO)₅ molecule?

64.Some salts although containing two different metallic elements give test for one of them in solution. Such salts are:

65.Consider the complex: [Co(NH₃)₅CO₃]ClO₄. The coordination number, oxidation number, number of d electrons and number of unpaired d-electrons on the metal are respectively?

66.In electroplating of copper, K[Ag(CN)₂] is used instead of AgNO₃. The reaction is:

67.Which of the following is paramagnetic in nature with spin of electron?

68.The EAN of cobalt in the complex ion [Co(en)₂Cl₂]⁺ is:

69.Theoretically the number of geometrical isomers expected for octahedral complex, [M_abcdef], is,

70.IUPAC name of K₃[Fe(CN)₆] is

71.The expected spin-only magnetic moments for [Fe(CN)₆]^4- and [FeF₆]^3- are,

72.In Fe(CO)₅, the Fe-C bond possesses:

73.Low spin complex of d6-cation in an octahedral field will have the following energy?

74.  0.02 mole of [Co(NH₃)₅Br] and 0.02 mole of [Co(NH₃)₅Cl]SO₄ are present in 200 cc of a solution X. The number of moles of the precipitates Y and Z that are formed when the solution X is treated with excess of silver nitrate and excess of barium chloride solutions respectively are:

75.The octahedral complex of a metal ion M³⁺ with four monodentate ligands L₁, L₂, L₃ and L₄ absorbs wavelength in the region of red, green, yellow and blue respectively: the increasing order of ligand strength of the four ligands is:

76.Dry heating of calcium acetate gives:

77.When 2-butyne is treated with dil. H₂SO₄/HgSO₄, the product formed is,

78.Formaldehyde reacts with ammonia to give urotropine it is:

79.Which one of the following will most readily dehydrated in acidic condition?

80.What is the product of the reaction when benzoyl chloride undergoes Rosenmund reduction?

81.CH₃CHO and C₆H₅CH₂CHO can be distinguished chemically by:

82. Which one of the following compound can be oxidized to the corresponding carbonyl compound?

83.The correct order of reactivity of PhMgBr with

1. I.PhCOPh
2. II.CH3CHO
3. III.CH3COCH3

84.When three molecules of acetone condense in presence of dry HCl, the product formed is:

85.Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium trichloroacetate ion and another compound. The other compound is,

86.The smallest ketone and its next homologue are reacted with NH2OH to form oxime:

87.Which one is most reactive towards nucleophilic addition reaction?

88.The correct order of acidity for the following compounds is:

I.2, 6-Dihydroxy benzoic acid

II.2-Hydroxy benzoic acid

III.3-Hydroxy benzoic acid

IV.4-Hydroxy benzoic acid

89.When CH₂=CH-COOH is reduced by LiAlH₄, the compound obtained will be:

90.Ethyl isocyanide on hydrolysis in acidic medium gives: