E2II PART TEST 7 for NEET 2023

1. Microfilaments are involved in

2.Which of the following statement(s) is /are correct?

I. Cardiac fibres are branched with one or more nuclei

II. Smooth muscles are unbranched and cylindrical

III. Skeletal muscles can be b4ranched or unbranched

IV. Smooth muscles are non-striated

3.The movement of ova through the female reproductive tract is facilitated by

4.Match the column

Column-I                                            Column-II

a.Structural and functional          i.H-zone

unit of myofibril

b.Protein of thin filament            ii.Myosin

c.Protein of thick filament    iii. Sarcomere

d.The central part of thick      iv.Actin

filament not overlapped by

thin filament

5.Fill up the blanks

The thin filament of myofibril contains ___A___ actin and two filaments of ___B___ protein along with ___C___ protein masking binding site for myosin.

6.Identify the following parts in the given diagram

7.In muscle calcium ions are stored in the

8.Identify the following parts in the given diagram

9. Which of the following statement is incorrect?

10.Identify the following parts in the given diagram

11.Assertion: The taxonomic category Order includes one or more genera

Reason: Cats and dogs belong to the same family

12.Match the column

Column-A                                                Column-B

i.Family                                                        a.   Tuberosum

ii.Kingdom                                               b.Polymoniales

iii.Order                                                   c.Solanum

iv.Species                                          d.Plantae

v.Genus                                            e. Solanaceae

13.Which is not a correct match?

14.Which taxonomic aid is based on the contrasting characters generally in a pair called couplet?

15.Which of the following is correct about Flora?

16.Two animals belong to the same kingdom but different classes. They may belong to the same

17.Plant order name ends with

18.Which of the following statement is incorrect?

19.Potato and brinjal are ____A____ species but both belong to ____B___ genus

20.Plant species in Botanical gardens are grown for

21.Find out the incorrect match

22.All of the criteria for five kingdom classification is used R.H Whittaker except?

23.The most abundant micro-organisms comes from the kingdom

24.Study the statements and find out the incorrect one

i.Archaebacteria differ from other bacteria in having a different cell wall structure

ii.Members of Protista are primarily aquatic

iii.Protista kingdom forms a link with the others dealing with plants, animals and fungi

iv.Nostoc and Anabaena can oxidise various inorganic substances such as

Ammonia

25.There are often blooms in polluted water bodies, these are

26.The chief producers of ocean are considered

27.The organism given below belongs to which class?

28.The given statements describe a group of organisms.

i.Instead of a cell wall they have a protein rich pellicle making their body flexible

ii.They have two flagella, a short and a long

iv.They show mixotrophic nutrition

Which of the following group is referred to here?

29.Match the column

Column-A                              Column-B

A.Phycomycetes           I.sac fungi

B.Ascomycetes            II.Algal fungi

C.Basidiomyecetes    III.Fungi imperfecti

D.Deuteromycetes   IV.Club fungi

30.Assertion: Virus is an obligate parasite

Reason: Virus is host specific

31.A compound ‘X’ on heating gives a colourless gas. The residue is dissolved in water to produce ‘Y’. When CO₂ is passed through the aqueous solution of ‘Y’, ‘Z’ is produced, which on gentle heating gives back ‘X’. Compound ‘X’ is:

32.The paramagnetic species is:

33.. A metal M readily forms its sulphate MSO₄ which is water soluble. It forms its oxide MO that becomes inert on heating. It forms an insoluble hydroxide M(OH)₂ which is soluble in NaOH solution. Then M is:

34.Sodium thiosulphate (Na₂S₂O₃.5H₂O) is used in photography to:

35.Property of all the alkaline earth metals that increases with their atomic number is:

36.. Alkali metals produce bright blue colour when they are dissolved in liquid ammonia. It is due to:

37.. Concentrated aqueous sodium hydroxide can separate mixture of:

38.Na₂CO₃ can be manufactured by Solvay process but K₂CO₃ cannot be prepared because:

39.The structure of BeCl₂ in solid state and vapour phase is respectively:

40.Identify the correct statement from the following:

41.Amphibole silicate structure has ‘x’ number of corners shared per tetrahedron. The value of ‘x’ is:

42.Lead pipes can be checked for lead poisoning using:

43.The number of double bonds at alternate position in C₆₀ molecule are:

44.Which one of the following statements about the zeolite is false?

45.BX₃ + NH₃           —->       BX₃.NH₃ + Heat of adduct formation (∆H). The numerical value of ∆H is maximum for:

46.

B(OH)₃ + NaOH     —->             NaBO₂ + Na[B(OH)₄] + H₂O                                                                                                How can this reaction be made to proceed in the forward direction at a faster rate?

47.Ammonia and chlorine are made to react. If ammonia is in excess, products formed are A and B. and when chlorine is in excess the products are C and D. A, B, C and D respectively are:

48.. Which of the following statements is not correct?

49.Arrange the group 15 hydrides in the increasing order of H-M-H bond angle:

50.HXeO₄^– + OH^–          —->       (X) + (Y) + O₂ + H₂O                                                                                                        

  The products (X) and (Y) in the unbalanced reaction are:

51.Which one of the following statements is not true?

52.. If a lake is contaminated with DDT, it’s highest concentration would be found in:

53.The most harmful air pollutant produced by automobiles is:

54.A: Both SO₂ and NO₂ are major components of air pollution.

      R: SO₂ forms reducing smog while NO₂ is a component of oxidising smog.

55.White lung cancer is caused by:

56.

When rain is accompanied by a thunderstorm, the pH value of collected rain water is:

57.The chemical that is an excellent “green solvent” as well as a greenhouse gas:

58.Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form dioxides of nitrogen because:

59.Which of the following conditions shows the polluted environment?

A: pH of rain water is 5.6

B: Amount of CO₂ in atmosphere is 0.03%

C: Biochemical Oxygen Demand is 10 ppm

D: Eutrophication

60.Match the pollutants in column I with effects in column II:

A  B     C      D

61.Which of the following is correct in terms of increasing work done for the same change in volume?

62.The volume of a gas is reduced adiabatically to 1/4 of its volume at 27°C, if the value of γ = 1.4, then the new temperature will be – 

63.The latent heat of vaporisation of water is 2240 J/gm. If the work done in the process of expansion of 1 g is 168 J, then increase in internal energy is 

64.In an isothermal change, an ideal gas obeys –

65.A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be (assuming whole system to be isolated) 

66.A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then –

67.A refrigerator works between 4°C and 30°C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take, 1 Cal = 4.2 Joules)

68.Figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be-

69.One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure.

The change in internal energy of the gas during the transition is

70.An ideal gas is compressed to half its initial volume by means of several process. Which of the process results in the maximum work done on the gas?

71.The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20°C, the temperature of the surroundings to which it rejects heat is –

72.For the indicator diagram given below to select the wrong statement

73.A sink, that is the system where heat is rejected, is essential for the conversion of heat into work. From which law the above inference follows?

74.A given mass of gas expands from state A to state B by three paths 1,2 and 3 as shown in the figure. If W1, W2 and W3 respectively be the work done by the gas along the three paths then

75.n given process dW = 0, dQ < 0 then for a gas

76.A temperature of 100^oF (Fahrenheit scale) is equal to T K (Kelvin scale). The value of T is

77.A body cools down from 80°C to 70°C in 5 minutes. The temperature of the body will fall from 70°C to 60°C in a time

78.If λm is the wavelength, corresponding to which the radiant intensity of a block is maximum, and its absolute temperature is T. Which of the following graph correctly represents the variation of λm with T.

79.. Heat capacity is equal to the product of:

80.A pendulum clock runs fast by 5 sec. per day at 20^o C and goes slow by 10 sec / day at 35^o C. It shows correct time at a temperature of

81.Five rods of the same dimensions are arranged as shown in figure , They have thermal conductivitie: k1,k2,k3, and k4 and k5.When points A and B are maintained  at different temperatures ,no heat flows through the central road if:

82.The temperature of a body on Kelvin scale is found to be X K. When it is measured by a Fahrenheit thermometer, it is found to be X⁰F. Then X is

83.A spherical black body with a radius of 12cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be:

84.Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at 100° C, while the other one is at 0° C. If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is –

85.Coefficient of linear expansion of brass and steel rods are α₁ and α₂, lengths of brass and steel rods are l₁ and l₂ respectively. If (l₂ – l₁) is maintained same at all temperatures, which one of the following relations holds good?

86.A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4×10⁵J/Kg and g=10N/Kg]

87.The two ends of a metal rod are maintained at temperatures 100°C and 110°C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200°C and 210°C, the rate of heat flow will be

88.The value of coefficient of volume expansion of glycerine is 5×10^-4 K^-1. The fractional change in the density of glycerine for a rise of 40°C in its temperature is –

89.Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be (Take specific heat of water=1 cal g^-1 °C^-1 and latent heat of steam = 540 cal g^-1)

90. Certain quantity of water cools from 70°C to 60°C in the first 5 min and to 54°C in the next 5 min. The temperature of the surroundings is