NEET Free Mock Test 2

NEET examination is one of the toughest exams in the country. NEET is aimed at selecting candidates for medical courses across the country. The exam consists of 180 questions for 720 marks. Each question carries 4 marks. Each wrong answer carries -1 mark. Duration of the exam is 180 minutes.

  • Physics
  • Botany
  • Zoology
  • Chemistry

Physics

1. 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 1 of 180

2. Calorie is defined as the amount of heat required to raise temperature of 1g of water by 10C and it is defined under which of the following conditions

 

 

Question 2 of 180

3. 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 3 of 180

4. A ‘2Mev’ proton is moving perpendicular to a uniform magnetic field of ‘2.5 Tesla’. The force on the proton is (mass of proton = 1.6 × 10-27 kg)

Question 4 of 180

5. A radiation of energy ‘E’ falls normally on a perfectly reflecting surface. The momentum  transferred to the surface is (C is the Velocity of light )

Question 5 of 180

6. 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 6 of 180

7. A Carnot engine operates between 800K and 200K. If it absorbs 8 kJ of heat in each cycle, the work done by it per cycle is...

Question 7 of 180

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

Question 8 of 180

9. A paramagnetic sample shows a net magnetization of 8 A/m when placed in an external magnetic field of 0.6 T at a temperature of 4 K. When the same sample is placed in an external magnetic field of 0.2 T at a temperature of 16 K, the magnetization will be

Question 9 of 180

10. For a prism kept in air it is found that for an angle of incidence 600, the angle of refraction ‘A’, angle of deviation ‘δ ’ and angle of emergence ‘e’ become equal. Then the refractive index of the prism is

Question 10 of 180

11. Diamagnetic materials are substances that...

Question 11 of 180

12. 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 12 of 180

13. A Student measured the length of a rod and wrote it as 3.50cm. Which instrument did he use to measure it

 

Question 13 of 180

14. To charge a secondary cell, what is needed is...

Question 14 of 180

15. A uniform magnetic field B is directed out of the page. A metallic wire has the shape of a square frame and is placed in the field as shown. While the shape of the wire is steadily transformed into a circle in the same plane, the current in the frame

Question 15 of 180

16. A nucleus of mass 'M + ∆m'  is at rest and decays into two daughter nuclei of equal mass '(M/2)' each speed of light is ‘C’. The speed of daughter nuclei is

Question 16 of 180

17. For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index

 

Question 17 of 180

18. 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 18 of 180

19. 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 19 of 180

20. 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 20 of 180

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

Question 21 of 180

22. Pick out the wrong statement from the following.

Question 22 of 180

23. A diatomic ideal gas is used in carnot engine as the working substance if during the adiabatic part of the cycle the volume of the gas increases from ‘V’ to ‘32V’. The efficiency of the engine is

 

Question 23 of 180

24. Of the following the one that is a vector is...

Question 24 of 180

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

Question 25 of 180

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

Question 26 of 180

27. In a uniform segment of a circuit the current is proportional to the...

Question 27 of 180

28. 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 28 of 180

29. The maximum value of ‘F’ for which both the blocks move together is

Question 29 of 180

30. The given graph represents V – I characteristic for a semiconductor device

Which of the following statement is correct

Question 30 of 180

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

 

Question 31 of 180

32. 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 32 of 180

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

Question 33 of 180

34. For monatomic gases, Cp/Cv is equal to...

Question 34 of 180

35. 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 35 of 180

36. Fermi is a unit of...

Question 36 of 180

37. For a projectile, its horizontal range and maximum vertical heights are equal, maximum height reached by it is (‘u’ is initial velocity of the projectile)

Question 37 of 180

38. Two infinitely long parallel wires having linear charge densities 'λ1'and 'λ2' respectively are placed at a distance ‘R’. The force per unit length on either wire will be (k = (1/4πε0))

Question 38 of 180

39. A light ray passes through a prism with an angle of incidence θ, an angle of deviation δ and an angle of emergence ε. Minimum deviation occurs when...

Question 39 of 180

40. Magnetic moment and angular moment of revolving electron in a hydrogen atom ‘M’ and ‘L’ respectively then

Question 40 of 180

41. 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 41 of 180

42. 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 42 of 180

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

Question 43 of 180

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

Question 44 of 180

45. The plane faces of two identical plano-convex lenses each having focal length of 40cm  are pressed against each other to form a usual convex lens. The distance from lens, at which an object must be placed to obtain a real, inverted image with magnification one is

 

Question 45 of 180

Botany

46. Main function of centromere is

Question 46 of 180

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

Question 47 of 180

48. Study of arrangement of perianth parts in bud condition, is not possible in

Question 48 of 180

49. How many chromosomes will be found in a cell at anaphase –II having 2n = 50 ?

Question 49 of 180

50. Eight bacteria kept in cup divide repeatedly and produce 64 bacteria in 2 hours. Find the time consumed in binary fission.

Question 50 of 180

51. Among the following the no. of asexual reproductive structures is/are Gemmae of Marchantia, Epiphyllous buds of Bryophyllum, Bulbils of Agave Rhizome of zinger, Tuberous stem of potato, Offsets of Pistia, Zoospores of Chlamydomonas, Hormogonia of Nostoc

Question 51 of 180

52.

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 52 of 180

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

Question 53 of 180

54. The biocatalyst ribozyme is synthesized by a process called

Question 54 of 180

55. A cell is kept in hypotonic solution, after sometime is

Question 55 of 180

56. 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 56 of 180

57. Which of the following is true w.r.t. grafting

Question 57 of 180

58. Apple, Custard apple, Pine apple and thorn apple are

Question 58 of 180

59. Primary succession results in formation of communities on area

Question 59 of 180

60. Fuel of photosynthetic carbon oxidation, is

Question 60 of 180

61. Which of the following are the simple mechanical tissues

Question 61 of 180

62. A family not delimited by the type of inflorescence is

Question 62 of 180

63. Which of the following is true statement

Question 63 of 180

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

Question 64 of 180

65. Structures observed both in prokaryotic and eukaryotc cells are

Question 65 of 180

66. Which of the following statements about classification is true?

i) Members of a family are less similar than members of an included genus

ii) An order has more members than the number of members in as included genus

iii) Families have more members than  phyla

iv) Members of a family share a common ancestor in the more distance past than members of an included genus

v) The number of species in a taxon depends on their relative degree of similiarity

Question 66 of 180

67. Resistance to shoot and fruit borer is observed in a bhindi variety namely

Question 67 of 180

68. Which of the following is a wrong match?

Question 68 of 180

69. When PS-I is excited with the light of wavelength greater then 680nm, photophosphorylation occurs due to cyclic flow of electrons, results in synthesis of

Question 69 of 180

70. Identify the non-suberised loosely arranged cells for gaseous exchange in the given diagram

Question 70 of 180

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

Question 71 of 180

72. 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 72 of 180

73. Find the correct match
I) Aspergillus niger — fungus — citric acid
II) Streptococcus — bacterium — streptokinase
III) Trichoderma polysporum — fungus — cyclosporin A
IV) Monascus purpureus — yeast — statins
The correct answer is

Question 73 of 180

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

Question 74 of 180

75. The leaves of the juvenile plant are different in shape from those in mature plant in

Question 75 of 180

76. How many of the following statements are true

i) Volvox and Fucus show oogamy

ii) Agar is commercially obtained from Gelidium and Gracillaria

iii) Gametophyte is parasite on sporophyte in Sphagnum

iv) Funaria is monoecious and Marchantia is dioecious

v) Source of SCP are Spirullina and Chlorella

Question 76 of 180

77. Pioneers of xerarch succession are

Question 77 of 180

78. Which of the following statements are correct

A. Guttation is the manifestation of root pressure

B. Natural antitranspirant is PMA

C. Turgor pressure, wall pressure
and pressure potential of a cell, all are numerically equal with same sign

D. High nitrogen to carbon ratio is found in Ureids

Question 78 of 180

79. 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 79 of 180

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

 

Question 80 of 180

81. Which of the following is a correct match

Question 81 of 180

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

Question 82 of 180

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

Question 83 of 180

84. A primary root grows from 10 cm to 30 cm in a day. Calculate the Absolute Growth Rate (AGR) and Relative Growth Rate (RGR) over the period AGR

Question 84 of 180

85. Which of the following statements is true

Question 85 of 180

86. Colchicine is an alkaloid used to double the number of chromosomes (Polyplody). It is obtained from

Question 86 of 180

87. Exogenous and endogenous spores of sac fungi respectively are

Question 87 of 180

88. In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinatied. How many seedlings will have the parental  phenotype?

Question 88 of 180

89. Which of the following statement is wrong?

Question 89 of 180

90. 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 90 of 180

Zoology

91. Which of the following technique has been shown in the given diagram

 

Question 91 of 180

92. Match the following columns
Column-I                                                        Column-II
A) Thomas Malthus                                I) Branching descent
B) Hugo de Vries                                     II) Studies on                                                                                     populations
C) Charles Darwin                                   III) Use disuse                                                                                  principle
D) Lamarck                                               IV) Saltation

Question 92 of 180

93. Olfactory bulbs are extensions of

Question 93 of 180

94. In which one of the following options the two examples are correctly matched with their particular type of immunity?
Examples                                                                   Type of immunity
1) Polymorphonuclear

leucocytes and monocytes                                      Cellular barriers
2) anti-tetanus and anti-snake

bite injections                                                            Active immunity
3) Saliva in mouth and

tears in eyes                                                              Physical barriers
4) mucous coating of epithelium lining                Physiological barriers
the urinogenital tract and the HCl in stomach

Question 94 of 180

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

Question 95 of 180

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

Question 96 of 180

97. A tumour in the adrenal zona glomerulosa may cause hypersecretion of the hormones in that region. Which of the following you might expect to find in a patient with such a tumour?

Question 97 of 180

98. 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 98 of 180

99. Bundle of His is a network of:

Question 99 of 180

100. Consider the following features:

A. Exclusively marine, radially symmetrical diploblastic organisms with tissue level of organisation.

B. The body bears eight external rows of ciliary comb plates.

C. Digestion is both extracellular and intracellular

D. Exhibit bioluminescence

E. Monoecious, fertilisation external with indirect development The above-mentioned features belong to the animal

Question 100 of 180

101. Which of the following structures are found in female cockroach ?

Question 101 of 180

102. The enzyme which catalysis the following Biochemical reaction is released from which cells

Trypsinogen → Trypsin

Question 102 of 180

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

Question 103 of 180

104. Ligament consists of

Question 104 of 180

105. The following depiction is the karyotype of “Cinderalla of genetics”

The sex of the Hexapod should beThe sex of the Hexapod should be

Question 105 of 180

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

Question 106 of 180

107. Function of thyrocalcitonin

Question 107 of 180

108. According to Darwin

I) Inter specific competition is a potent force in organic evolution

II) Evolution was gradual and variations are small and directional

III) Branching decent and Natural selection are two key concepts of evolution

Which of the following statements are correct

Question 108 of 180

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

Question 109 of 180

110. Read the following statements

A : A considerable amount of NPP is utilised by plants in respiration

B: The annual NPP of the whole biosphere is approximately 170 billion tons of organic matter

Question 110 of 180

111. The state of heart when it does not pump blood effectively enough to meet the needs of the body is

Question 111 of 180

112. Which one of the following ecosystem types has the highest annual net primary productivity?

Question 112 of 180

113. Choose the wrong statement.

Question 113 of 180

114. 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 114 of 180

115. Which of the following statements are correct related to human

A. The chemical process of digestion is initiated in oral cavity by the hydrolytic action of the carbohydrate splitting enzyme, the salivary amylase.

B. Lipases are absent in secretion of gastric glands

C. Bile helps in emulsification of fats and also activates lipases.

D. Nucleases in the succus entericus acts on nucleic acids to form nucleotides and nucleosides

Question 115 of 180

116. The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?

Question 116 of 180

117. In the resting muscle fiber, tropomyosin partially covers

Question 117 of 180

118. When light incidents on photoreceptor cells of the retina of eye ,their membrane is

Question 118 of 180

119. 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 119 of 180

120. 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 120 of 180

121. Find out the correct labelling of bones A, B, C and D in the given figure

Question 121 of 180

122. Identical twins are produced when

Question 122 of 180

123. Epididymis is

Question 123 of 180

124. If due to some injury, the chordae tendinae of the tricuspid valve of the human heart are partially non-functional, what will be the immediate effect?

Question 124 of 180

125. Arrange the periods of palaeozoic era in ascending order in a geological time scale

Question 125 of 180

126. The embryonic membrane involved in the formation of placenta in human is

Question 126 of 180

127. The correct match for structures of cockroach is
Column-I                                                  Column-II
A. Ommatidia                             I. Articulates with thorax
B. Trochanter                             II. For vision
C. Coxa                                        III. Forming exoskeleton
D. Sclerites                                  IV. Fused with large and                                                                  stout femur

Question 127 of 180

128. Human liver fluke depends on two intermediate hosts to complete its life cycle they are

Question 128 of 180

129. 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 129 of 180

130. In kidneys, renal papillae are part of

Question 130 of 180

131. Partial pressure of oxygen in alveoli, atmospheric air and tissue will be ------- mm of Hg

Question 131 of 180

132. Which of the following recombinant protein has been used to treat emphysema?

Question 132 of 180

133. 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 133 of 180

134. which of the the following statement is false?

Question 134 of 180

135. The last two pairs of ribs are named floating ribs, because

Question 135 of 180

Chemistry

136. 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 136 of 180

137. If lone pair of electron occupy axial position then, incorrect about is :

 

Question 137 of 180

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

Question 138 of 180

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

Question 139 of 180

140. For the given complex ,[CoCl2(en)(NH3)]+ the number of geometrical isomer’s, the number of optical isomers and the total number of isomers of all type
possible respectively are

Question 140 of 180

141. Copper crystallizes in fcc with a unit cell length of 361 pm. What is the radius of copper atom?

Question 141 of 180

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

Question 142 of 180

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

Question 143 of 180

144. The number of carbon atoms per unitcell of diamond unitcell is

Question 144 of 180

145. Find correct statement

Question 145 of 180

146. The equivalent weight of HCl in the given reaction is
KCr2O7 +14 HCl -->2KCl + 2CrCl3 +3Cl2 +H2O

Question 146 of 180

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

Question 147 of 180

148. The correct order of increasing acidic strength of the compounds
A) CH3CO2H
B) MeOCH2CO2H
C) CF3CO2H

D)

 

Question 148 of 180

149. 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 149 of 180

150. Which of the following ‘gem’ diols is stable?

Question 150 of 180

151. Compound having least heat of hydrogenation:

Question 151 of 180

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

Question 152 of 180

153. Addition of dilute HCl or FeCl3 solution to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. The phenomenon is known as

Question 153 of 180

154. 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 154 of 180

155. 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 155 of 180

156. The pair of molecules having same geometry and same bond angles are

Question 156 of 180

157. Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in

Question 157 of 180

158.

Question 158 of 180

159. Which of the following is not correctly matched?

Question 159 of 180

160. Xe has max. EN in:-

Question 160 of 180

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

Question 161 of 180

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

Question 162 of 180

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

Question 163 of 180

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

Question 164 of 180

165. The conductivity of saturated solution of BaSO4is 3.06×10-6  mho cm-1and its equivalent conductance is 1.53 mho cm-2 eq-1. Then Ksp for BaSO4 will be

Question 165 of 180

166.

Number of carbon atoms in principal carbon chain

 

Question 166 of 180

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

Question 167 of 180

168. 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 168 of 180

169. The correct statement/s about H2 S2 O7 is/are

Question 169 of 180

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

 

Question 170 of 180

171. The molecule which is having maximum number of lone pair

Question 171 of 180

172. A solution ‘X’ contains 30 mole percent of A and is in equilibrium with its vapour that contains 40 mole percent of ‘B’. The ratio of vapor pressure of pure A and B will be:

Question 172 of 180

173. At what temperature will average speed of the molecules of the second member of the series  CnH2n be the same of Cl2 at 6270C?

Question 173 of 180

174. 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 174 of 180

175. 75% completion of a first order reaction takes 2.38 hours. How much time will it take for 99.9% completion?

Question 175 of 180

176. In Kjeldahl ‘s method, the nitrogen gas evolved from 1.325 g sample of a fertilizer is passed into 50.0 mL of 0.2030 N H2SO4mL of 0.1980 N NaOH are required for the titration of unused acid. The percentage of nitrogen in fertilizer is

Question 176 of 180

177. Which of the following vitamin contains ionone ring and
hydrocarbon chain.

Question 177 of 180

178. The correct statement among the following is:
i) NaBH4 produce BH6 on reaction with I2

ii) Reaction between B2H6 and NMe3 is an acid base reaction

iii) BH6 is produced on industrial scale by reaction with BF3, NaH

iv) Boranes on hydrolysis produce
B2H6 and H2 gas

 

 

 

Question 178 of 180

179. When the value of azimuthal quantum number is 3, the maximum and the minimum values of the spin multiplicities are

Question 179 of 180

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

Question 180 of 180


 



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