NEET Free Mock Test 1

  • Physics
  • Botany
  • Zoology
  • Chemistry

Physics

1. A square coil of side ‘25cm’ having 1000 turns is rotated with a uniform speed in a magnetic field about an axis perpendicular to the direction of the field. At an instant ‘t’ the ‘e.m.f’ induced in the coil is E= 200 sin100πt. The strength of the magnetic field is (in Tesla)

Question 1 of 180

2. When the velocity of a moving object is doubled...

Question 2 of 180

3. Mark out the incorrect statement regarding transverse standing waves on a string

Question 3 of 180

4. A variable frequency A.C. source is connected to a capacitor. How will the displacement current change with decrease in frequency?

Question 4 of 180

5. A certain person's heart beats 1.2 times per second and pumps 1.0 x10-4 m³ of blood per beat against an average pressure of 14 kPa. The power output of the heart is...

Question 5 of 180

6. P-V diagram of a diatomic gas is a straight line passing through origin. The molar heat capacity of the gas in the process will be

Question 6 of 180

7. A sonometer wire resonate with a given tuning fork forming standing wave with five antinode between the two bridges when a mass of 9kg is suspended from the wire. When this mass is replaced by a mass M, the wire resonates with the same tuning fork forming three antinodes for the same position of the bridges. The value of M is

Question 7 of 180

8. The horizontal component of a force of 10 N inclined at 30° to the vertical is...

Question 8 of 180

9. In natural α -decay process occurring in different types of nuclei at rest. Which of the following
is correct?

Question 9 of 180

10. To keep a vehicle moving at the speed v requires a force F. The power needed is...

Question 10 of 180

11. A projectile is thrown in the direction making an angle θ with the horizontal. The projectile attains maximum height for θ equal to...

Question 11 of 180

12. If for the planets in solar system, r is the radius of the orbit and T is the periodic time, then the ratio r³ /T² is...

Question 12 of 180

13. The wavelength of light plays no role in...

Question 13 of 180

14. The aperture of the objective lens of a telescope is made large so as to

 

Question 14 of 180

15. Two coherent sources of intensity ratio 1:4 produce an interference pattern the fringe visibility will be

 

Question 15 of 180

16. A block of mass 10kg moving in X-direction with a constant speed of  10 msec-1, is subjected to a retarding force F = (x/10) (Joule/meter) during its travel from x=10m to x=20m its final kenetic energy will be (in Joule)

 

Question 16 of 180

17. In the figure shown a source of sound of frequency 510 Hz move with constant velocity Vs=20 m/ s in the direction shown. The wind is blowing at a constant velocity Vw=20 m/S towards an observer who is at rest at point B. Corresponding to the sound emitted by the source in initial position A, the frequency detected by the observer is equal to (speed of sound relative to air = 330 m/s)

Question 17 of 180

18. A thin circular loop of radius ‘R’ rotates about its vertical diameter with an angular frequency ‘ ’. A small bead on the wire loop remains at its lowermost point for ω ≤ √(g/R) . What is the angle made by the radius vector joining the centre to the bead with the vertical downward direction for ω = √(2g/R) (Neglect the friction)

Question 18 of 180

19. The length of a potentiometer wire is l. A cell of emf ‘e’ is balanced at a length l/5 from the positive end of the wire. Assuming there is no contribution in resistance from any part of the circuit except the potentiometer wire, the balancing length for the same cell if length of the wire is increased by l/2 is

Question 19 of 180

20. An object moving with a speed of 6.25 m/sec, is decelerated at a rate given by (dy/dt) = -2.5√v . Where ‘v’ is the instantaneous speed. The time taken by the object to come to rest, would be

 

Question 20 of 180

21. Two bodies ‘A and B’ of masses 5 kg and 10 kg in contact with each other rest on a table against a rigid partition. Coefficient of friction between the bodies and the table is 0.2. A force of 200N is applied horizontally at ‘A’ action reaction force between A and B is (g = 10 m/sec2)

Question 21 of 180

22. At which of the following temperatures would the molecules of a gas have twice the average kinetic energy they have at 20 °C

Question 22 of 180

23. Out of the following functions representing motion of a particle which represents ‘SHM’

a) Y = sinωt - cosωt

b) Y = Sin3 ωt

c) Y = 5 cos[(3π/4) - 3ωt]

d) Y = 1 + ωt + ω2t2

Question 23 of 180

24. The image a camera forms on the film is...

Question 24 of 180

25. The radius of the planet is ‘R’ A satellite revolves around it in a circle of radius ‘r’ with an angular velocity ‘ω’. The acceleration due to the gravity onthe planet surface is

Question 25 of 180

26. The only atom which has no neutron in the nucleus is...

Question 26 of 180

27. If the velocity v of a particle moving along a straight line decreases linearly with its displacement ‘S’ from 20ms-1 to a value approaching zero at S=30m. Then acceleration of the particle at S=15m is

Question 27 of 180

28. The primary effect when the source is moving is a change in...

Question 28 of 180

29. A single slit of width ‘0.1mm’ is illuminated by a parallel beam of light of wave length and diffraction bands are observed on a screen ‘0.5m’ from the slit. The distance of the third dark band from the central bright band is

 

Question 29 of 180

30. A rocket of initial mass  'm0' moving with velocity ‘v’ discharges a jet of gases of mean density ‘ρ’ and effective area ‘A’ the minimum value of ‘v’ of fuel gas, which enables the rocket to rise vertically above is nearly

Question 30 of 180

31. A voltage of peak value 283 volt and varying frequency is applied to a series L-C-R combination in which R =3 ohm, ‘L=25 mH and C = 40μF . The frequency of the source at which maximum power is dissipated in the circuit is

Question 31 of 180

32. Two metal spheres are falling through a liquid of density  2 × 103 kg/m3  with the same uniform speed. The material density of sphere ‘1 and 2’ are  8 × 103 kg/m3  and 11 × 103 kg/m3   The ratio of their radii is

Question 32 of 180

33. Gas at a pressure ‘P0’ is contained in a vessel. If the masses of all the molecules are halved and their r.m.s speeds are doubled, the resulting pressure will be equal to

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34. If the maximum value of the induced e.m.f. is Vm and maximum r.m.s. current is √ 2 ampere for an a.c. circuit with resistance R, then the value of Vm in volt is equal to...

Question 34 of 180

35. A particle moves along X –axis in such a way that coordinate X varies with time t according to the equation . x = ( 2-5t+6t2)m The initial velocity of the particle is

Question 35 of 180

36. A solid sphere of mass ’M’ ; radius ‘R’ and having moment of inertia about an axis passing through the centre of mass is ‘I’. It recast into a disc of thickness ‘t’. Whose moment of inertia about an axis passing through its edge and perpendicular to its plane remains ‘I’ then radius of the disc will be

Question 36 of 180

37. A cable stretches by amount 'a' under a certain load. If it is replaced by a cable of the same material but half as long and half the diameter, the same load will stretch it by...

Question 37 of 180

38. Two satellites have periods P1 and P2, respectively. Their heights above the surface of the earth are h1 and h2,respectively. If h1 > h2, then...

 

Question 38 of 180

39. The de-Broglie wave length of an electron in first Bohr orbit is

 

Question 39 of 180

40. The threshold frequency for a metallic surface corresponds to an energy of 6.2ev and the stopping potential for a radiation incident on this surface is ‘5volt’. The incident radiation lies in

 

Question 40 of 180

41. The power of a lens having refractive index 1.25 is +3 diopters. When placed in a liquid its power is -2 diopters. The refractive index of the liquid is

Question 41 of 180

42. Four identical hollow cylindrical columns of mild steel support a big structure of mass 88000 kg. The inner and outer radii of each column are 30cm and 40cm respectively. Assuming load distribution is uniform. The compressional strain of each column is (Y = 2×1011  N/m2 )

Question 42 of 180

43. Two identical containers each of volume V joined by a normal pipe contains gas at a
temperature T. If one of the containers is now maintained at the same temperature T while the other is maintained at 2T, the number of moles of gas in the container having temperature 2T will be

Question 43 of 180

44. An electric cell of e.m.f ‘E’ is connected across a copper wire of diameter ‘d’ and length 'l' the drift velocity of electron in the wire is 'vd' If the length and diameter of the wire are doubled the new drift velocity of electron is

Question 44 of 180

45. Torques of equal magnitude are applied to a hollow cylinder and a solid sphere, both having the same mass and radius. The cylinder is free to rotate about its standard axis of symmetry and the solid sphere about its diameter axis. After ‘t’ sec their angular velocities are . Choose the correct answer (initial angular speed of each is 'ω0'

Question 45 of 180

Botany

46. Which of the following transforms more amount of radiant energy into chemical energy

Question 46 of 180

47. Which of the following kinds of plants fix carbon dioxide by Crassulacean Acid Metabolism (CAM) pathway

Question 47 of 180

48. In the given diagrams the correct labelling of A, B, C, D, respectively, is

Question 48 of 180

49. Select the incorrect statements

(i) Cell organelle within cell organelle is plasmosome

(ii) Factory of protein factories is ergosome

(iii) Membraneless non-cell organelle is centrosome

(iv) nucleosomes are ribonucleoprotein bodies

(v) A eukaryotic cell in a eukaryotic cell is vegetative cell

Question 49 of 180

50. Which one of the following statements regarding enzymes is wrong

Question 50 of 180

51. 1/4 TT : 1/2 Tt : 1/4 tt is the binomial expansion of

Question 51 of 180

52. The correct sequence of electron acceptors in respiratory electron transport is

Question 52 of 180

53. Which of the following are the simple mechanical tissues

Question 53 of 180

54. Identify the incorrect statements

I) Trichoderma species are symbiotic fungi

II) Baculoviruses are nothing but bacteriophages

III) Diphtheria is commonly known as kali khansi

IV) Microbes are used to ferment fish, soyabean and bamboo-shoots to make foods

 

Question 54 of 180

55. Match Column I with Column II and select the correct option

Column – I                         Column - II

  1. Ascomycetes                  i) Ustilago
  2. Phycomycetes               ii) Saccharomyces
  3. Basidionycetes              iii) trichoderma
  4. Deuteromycetes           iv) Albugo

Question 55 of 180

56. Identify A. B. C. D in the following diagram

Question 56 of 180

57. A common step for both aerobic and anaerobic respiration is

Question 57 of 180

58. Read the following and identify the correct statement

Question 58 of 180

59. Processes which can never occur in the structure called “Cell brain” are

A. Polymerisation of ribonucleotides

B. Synthesis of ‘energy currency of cell’

C. Polymerisation of deoxyribonucleotides

D. Polymerisation of amino acids

Question 59 of 180

60. How many plants among the following have opposite phyllotaxy. China rose, Sun flower, Mustard, Alstonia, Guava, Calotropis and Nerium?

Question 60 of 180

61. In dicot roots, the pericycle gives rise to

Question 61 of 180

62. Wall less protistans among the following are

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63. If the content of DNA in a chromosome is 2C after M-phase, what will be the content of DNA at G1 phase chromosome and S - phase chromosome of mitosis?

Question 63 of 180

64. The following set of cell organs are included in endomembrane system

Question 64 of 180

65. Which of the following instruments are correctly matched, except?

i) Potometer – Transpiration rate

ii) Atmometer – Demonstrate transpiration pull

iii) Auxanometer – Growth measurement

iv) Ganog’s light screen – Measure light intensity

v) Manometer – Demonstreate toot pressure

Question 65 of 180

66. Match the columns, I, II and III and choose the correct combination from the options given

 

Question 66 of 180

67. After initial growth maize stem elongates by the activity of

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68. The fruit of Annona squamosa (custard apple) develops from

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69. Number of amembraneous structures from the following is/areRibosome, Centriole, Cytoskeleton, Peroxisome, Nucleolus, Inclusion bodies, Power house of the cell

Question 69 of 180

70. Ψw and Ψpare zero respectively for

Question 70 of 180

71. Which of the following is less general in characters compared to family

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72. Select the nutritive tissue in the structure of anther

Question 72 of 180

73. Select the correct statement regarding activated sludge formed during secondary sewage treatment

Question 73 of 180

74. ‘Vascular cryptogams’ are not the first group to exhibit

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75. Which site of a tRNA molecule forms hydrogen bonds with particular codon of mRNA molecule?

Question 75 of 180

76. A  cell under hypertonic solution shows incipient plasmolysis, then what will be present between cell wall and cell membrane

Question 76 of 180

77. Synthesis of human insulin in E.coli cells is the best evidence for

Question 77 of 180

78. Bacteria differ from cyanobacteria by which of the following features?

i) Absence of flagella and fimbriae

ii) dsDNA without attached histones

iii) Anoxygenic photosynthesis

iv) Stored food as glycogen

v) Absence of N2 Fixing cells like heterocysts

 

Question 78 of 180

79. Which of the following are correct statements?

j) Pinus and orchid seeds can’t germinate and establish without the formation of mycorrhiza

k) Plants absorbs maximum water from the soil by passive absorption

l) In endodermis region of roots, water follow symplastic pathway

m) High O2 concentration high light intensity induces photorespiration in sciophytes.

n) paper used to compare transpiration from two surfaces of leaf

Question 79 of 180

80. The minerals involved in water-splitting reaction during light phase of photosynthesis is/are

Question 80 of 180

81. Number of genotypes present in yellow round, yellow wrinkled, green round and green wrinkled phenotypes of 2F generation progeny of Mendel’s dihybrid cross respectively is

Question 81 of 180

82. Select the wrong match for microbial products

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83. Deficiency of the following nutrients causes inhibition of cell division, delay in flowering and chlorosis

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84. Go through the diagram given below and indentify the option having correct set of answers

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85. Which of the following is true statement

Question 85 of 180

86. The needle like cladodes of Asparagus are metamorphosed stem for

Question 86 of 180

87.

Select the correct match
Column – I                      Column – II

A. Terminalisation                 I. Pachytene

B. Synapsis                             II. Anaphase II

C. Disjunction                        III. Zygotene

D. Recombinations               IV. Anaphase I

V. Diakinesis
A B C D

Question 87 of 180

88. DNA with one strand labeled with radioactive thymidine. Allowed to replicate in normal nutrient medium for three generations. Then proportion of DNA molecules showing radioactivity is

Question 88 of 180

89. Inner most layer of the extrastelar ground tissue system of roots, is characterised by

Question 89 of 180

90. The phytohormone/s which play(s) an important role in development, maturation and dormancy of seeds is
I. GA3     II. ABA    III. IAA     IV. Kinetin

Question 90 of 180

Zoology

91. Epididymis is

Question 91 of 180

92. Following is a diagrammatic representation of a nephron showing blood vessels, duct and tubule. These structures have been labelled as A, B, C etc., Answer the questions that follow.

(i) Which parts are located in cortical region of kidney?

(ii) Which structure is highly reduced in cortical nephrons?

(iii) Identify the part F. (iv) Which parts collectively form Malpighian body?

Question 92 of 180

93. Choose the wrong statement.

Question 93 of 180

94. In Anaphylaxis, IgE interacts with which one of the following biocyte to promote release of inflammatory mediators.

Question 94 of 180

95. Identical twins are produced when

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96. A 26 years old female has 2 offsprings(NOTE:not twins). If menses start at the age of 12 years then  the number of  ova formed are

Question 96 of 180

97. How many of  the following Animals are non-chordates with water vascular system?

A1) Sea – Cucumber      A2) Sea – Horse

A3) Brittle star                 A4) Sea – Hare

A5) Sea – fan                     A6) Sea – urchin

Question 97 of 180

98. Which of the following statements about blood transfusion is correct

Question 98 of 180

99. Select the synovial joint which is exclusive to Axial skeleton

Question 99 of 180

100. Who was awarded the three prizes widely regarded as the triple crown of biology

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101. Following is a diagrammatic representation of endocrine glands with a labelled part ‘A’. The part ‘A’ serves as the connection between

Question 101 of 180

102. Olfactory bulbs are extensions of

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103. The concentration of DDT is increased at successive trophic levels in a food chain, through

Question 103 of 180

104. Which part of ovary in mammals acts as an endocrine gland after ovolution?

Question 104 of 180

105. ABO blood group has

Question 105 of 180

106. Statement(1): (S1): After primary immune response, subsequent encounter with the same pathogen elicits a highly intensified anamnestic response

Statement(2): (S2): Anamnestic response is because our body develops memory after the first encounter.

Question 106 of 180

107. All of the following are functions of catecholamines, except

Question 107 of 180

108. Function of thyrocalcitonin

Question 108 of 180

109. In present times the origin of life is not possible from inorganic compounds due to

Question 109 of 180

110. The four structure listed are part of the human excretory system.
I. Bladder II. Kidney III. Ureter IV. Urethra
In which order does a molecule of urea pass through these structures?

Question 110 of 180

111. Select the correct match of the digested products in humans given in column-I with their absorption site and mechanism in column-II.
Column-I                                                    Column-II
1) Glycerol, fatty acids                  Duodenum, move as                                                                    chylomicrons
2) Cholesterol, maltose                Large intestine, active                                                                   absorption
3) Glycine, glucose                        Small intestine, active                                                                   absorption
4) Fructose, Na+                            Small intestine, passive                                                                 absorption

Question 111 of 180

112. A phenomena in which a bee visits a flower at the same time every day is called

Question 112 of 180

113. If a female having gene for haemophilia and colour blindness on its one chromosome marries a normal male, then what are the chances in their offspring

Question 113 of 180

114. Which of the following statement is incorrect w.r.t alimentary canal of cockroach?

Question 114 of 180

115. Match the following columns
Column-I                                          Column-II
A. Dodo                                           I) Rauwolfia
B. Reserpine                                  II) Mauritius
C. Nile perch in lake Victoria       III) Habitat destruction
D. Main cause for biodiversity loss  IV) Alien species

Question 115 of 180

116. Which of the following is correct match w.r.t. human ancestor, its cranial capacity and certain feature?

Question 116 of 180

117. Correct sequence of hormone secretion from beginning of menstruation is

Question 117 of 180

118. Match the Columns and choose the Correct answer

Column I                            Column II

a.National aquatic                   (i) Endoskeleton fully

Animal                                    ossified

b.National Heritage                (ii) Seven cervical

Animal                                      Vertebrae

c.National Bird                        (iii) Sheds scales as

Skin cast

d.National Reptile                   (iv) Longest gestation

Period

(v) Cormorant

Question 118 of 180

119. Hormones involved in carbohydrate metabolism are

Question 119 of 180

120. Which one of the following is a matching pair of a body feature and the animal possessing it?

Question 120 of 180

121. Choose the combination of conditions in a tissue that would influence the most rapid dissociation of oxyhaemoglobin.

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122. During the transmission of nerve impulse through a nerve fibre, the potential on the outer side of the plasma membrane has which type of electric charge?

Question 122 of 180

123. The copper ions of IUDs

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124. The diagram shows a section through an alveolus and ablood capillary What are the oxygen concentrations at A,B and C?

 

A               B               C

Question 124 of 180

125. Observe the relaxed myocyte’s myofibril

Which of the following muscles have those traits?

a) Lateral rectus muscle

b) Iris muscles

c) Ciliary muscles

d) Sartorius muscle

Question 125 of 180

126. Layers of an ovum from outside to inside is

Question 126 of 180

127. What is common to whale, seal and shark?

Question 127 of 180

128. Given below are four statements A-D w.r.t. mechanism of muscle contraction. Choose from the option stating them as true (T) and false (F)

A. The action potential in the sarcolemma is generated by release of calcium ions in the sarcoplasm

B. The globular head of meromyosin possesses ATPase enzyme activity which causes hydrolysis of ATP and the energy derived make myosin head bind to exposed active sites on actin.

C. Cross bridge formation is followed by pulling the attached myosin filaments towards the centre of ‘I’ band.

D. The breaking of cross bridge requires binding of new ATP at the myosin head.

A B C D

Question 128 of 180

129. In which one of the following , erythrocytes are repositories of more  ions as compared to others?

Question 129 of 180

130. Alienate the number of  incorrect statement(s)

S1: Laccifer lacks circulatory system.

S2: Neries have nephridia but no nephrons

S3: Silver fish is Non-operculate marine fish

S4: Neophron has both neurons and nephrons

 

Question 130 of 180

131. Consider the following statements
I) The fertile top soil is removed by human activities like over – cultivation, unrestricted grazing, deforestation and poor irrigation practices
II) Desertification has become a major problem due to increased urbanization.
Which of the statements given above is/are correct?

Question 131 of 180

132. Match the following and select the correct answer.
Column I                          Column II
A. Choanocytes               1. Platyhelminthes
B. Cnidoblasts                 2. Ctenophora
C. Flame cells                  3. Porifera
D. Nephridia                   4. Coelenterata
E. Comb plates               5. Annelid

Question 132 of 180

133. If you suspect major deficiency of antibodies in person, to which of the following would you look for confirmatory evidence?

Question 133 of 180

134. Identify the molecules (a) and (B) shown below and select the right option giving their source and use.

Molecule                                     Source                                       Use
1) A - Cocaine                   Erythroxylum coca                Accelerates the                                                                                                                           transport of dopamine
2) B - Heroin                    Cannabis sativa                      Depressant and slows down                                                                                                     body functions
3) B - Cannabinoid              Atropa belladonna            Produces hallucinations
4) A - Morphine               Papaver somniferum            Sedative and pain killer

Question 134 of 180

135. According to 2001 census report, the population growth rate of India was

Question 135 of 180

Chemistry

136. The standard reduction potential for  Cu+2/ Cu  is +0.34V.Calculate the reduction potential at pH=14
for the above couple.   Ksp of Cu(OH)2= 1.0×10-19

Question 136 of 180

137. For decolourization of one mole of KMnO4 the required litre of 30 volume H2O2 in acidified medium is

 

Question 137 of 180

138. Henderson equation pH - pKa = 5 will be applicable to an acidic buffer when:-

 

Question 138 of 180

139. The vapour pressure of a dilute solution of glucose is 750 mm of Hg at 373K. The mole fraction of solute is

Question 139 of 180

140. The hybridisation of Beryllium in Beryllate ion formed when Beryllium hydroxide dissolves in excess of alkali?

Question 140 of 180

141. In  Na2O having antifluorite structure

Question 141 of 180

142. The pH of a solution of H2O2is 6.0. Some chlorine gas is bubbled into this solution. Which of
the following is correct?

Question 142 of 180

143. Which property is common in diamond and graphite

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144. Benzene reacts with cholorine in the presence of U.V. light and gives

Question 144 of 180

145. 51. Cyclohexene on ozonolysis followed by reaction with Zn dust and water gives compound ‘E’. Compound ‘E’ on further treatment with aqu.KOH yields compound ‘F’. Compound ‘F’ is

Question 145 of 180

146. The most volatile alkane is

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147. The first ionization potential of Na is 5.1eV The value of electron gain enthalpy of Na+ will be

Question 147 of 180

148. Iron sulphide is heated in air to form ‘A’ . ‘A’ is dissolved in water to give ‘Y’. The basicity of ‘Y’ is

Question 148 of 180

149. Assertion: Graphite is thermodynamically most stable allotrope of carbon
Reason: ΔHf0 of graphite is taken as zero

Question 149 of 180

150. Phenol can be distinguished from ethanol by the following reagents except

Question 150 of 180

151. Aqueous solutions of two compounds M-O-H and M1-O-H have been prepared in two different
beakers. If the electronegativity of M=3.5, M1=0.9, O=3.5 and H=2.1, then the solutions respectively are

Question 151 of 180

152. In which of the following pairs, both the species are not isostructural?

Question 152 of 180

153. A possitive carbylamine test is given by

Question 153 of 180

154. V1 ml of 3M HCl solution is mixed with V2ml of 3M H2SO4 to from a solution in which molarity of H+ ions is 5M, then the relation between V1and V2is

 

Question 154 of 180

155. 20g of naphthoic acid (C11H8O2) is dissolved in 50g of benzene, then freezing point depression of 2K is observed for solution. The vant hoff factor will be ( Kf for benzene=1.72 Kg Mol-1)

Question 155 of 180

156. When 0.1mole MnO42- is oxidized, the quantity of electricity required in coulombs to completely oxidize MnO42- to MnO4- is

Question 156 of 180

157. If mercury is used as cathode in the electrolysis of aqueous NaCl solution, the ions discharged at cathode are

Question 157 of 180

158. Which of the following organ metallic compound is σ and π
bonded?

Question 158 of 180

159. Kjeldahl’s method cannot be used for estimation of nitrogen in
I) C6H5CO NH2  II) Pyridine
III)  C6H5-N=N-C6H5

Question 159 of 180

160. Equimolar solutions of the following were prepared in water separately. Which one of the solution will record the highest pH?

Question 160 of 180

161. Total number of coordination isomers shown by complex  [Co(NH3)6] [Cr(Cl)6] is:

Question 161 of 180

162. Which of the following is used as “morning after pill”?

Question 162 of 180

163. Number of stereoisomers of the given compound

 

Question 163 of 180

164. Which one of the following is a mineral of iron?

Question 164 of 180

165. What would be the product formed when 1-bromo-3 chloro cyclo butane reacts with two equivalents of metallic sodium in ether

Question 165 of 180

166. An acid-base indicator has a In Kln of 3 ×10-5. The acid form of indicator is red and the basic form is blue.
Then

Question 166 of 180

167. 100ml of O 2 on partial ozonisation, O2 and O3are obtained in the molar ratio of 1 : 1 what % of O2is converted into ozone

Question 167 of 180

168. Select species which is planar at nitrogen

Question 168 of 180

169. Which artificial sweetner contains chlorine

 

Question 169 of 180

170. Which one of the following oxyacids of chlorine is the least
oxidising in nature

Question 170 of 180

171. The pH of a solution of H2O2is 6.0. Some chlorine gas is bubbled into this solution. Which of
the following is correct?

Question 171 of 180

172. The shortest wavelength of He+ ion in Balmer series is x, then longest wavelength in the paschen series of Li2+is

Question 172 of 180

173. Which of the following is not correctly matched?

Question 173 of 180

174. The half life of a reaction is 46 minutes when the initial concentration of the reactant is 4 mol/L and 92 minutes when the initial concentration is 0.2mol/L. The order of the reaction is

Question 174 of 180

175. To form osazone, mumber of moles of phenyl hydrazine  required by one mole of glucose is

 

Question 175 of 180

176. A and B are compounds of sodium. ‘A’ is thermally stable. On passing CO2 through aq. solution
‘A’, ‘B’ is formed. ‘B’ on heating gives ‘A’. Phenolpthalein is added to aqueous solutions of A, B.
The colours are

Question 176 of 180

177. Which of the following amines form N-nitroso derivative when treated with NaNO2 and HCl

Question 177 of 180

178. Which of the following has minimum flocculation value for positively charged sol ?

Question 178 of 180

179. An oxide of Nitrogen which form reddish brown fumes in air is

Question 179 of 180

180. The weight of H2O2present in 80 ml of 10V H2O2 solution is

Question 180 of 180


 



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