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46.Which of the following graphs correspond to one node?

47.

The rate of decay of a radioactive sample is given by R₁ at time t₁, and R₂ at a later time t₂. The mean life of this radioactive sample is

48.

Which of the following arrangements correctly represent a decreasing order of bond angles?

49.

A volume V of a gas at a temperature T₁ and a pressure p is enclosed in a sphere. It is connected to another sphere of volume V/2 by a tube and stopcock. The second sphere is initially evacuated and the stopcock is closed. If the stopcock is opened the temperature of the gas in the second sphere becomes T₂. The first sphere is maintained at a temperature T₁. What is the final pressure p₁ within the apparatus?

50.

X and Y are two elements which form X₂Y₃ and X₃Y₄. If 0.20 mol of X₂Y₃ weighs 32.0 g and 0.4 mol of X₃Y₄ weighs 92.8 g, the atomic weights of X and Y are respectively

51.

1 L of an acidified solution containing 31.6 g of KMnO₄ is decolourized by passing SO₂ through it. How much iron pyrites (FeS₂) has to be roasted to produce the necessary amount of SO₂ (K = 39, Mn = 55, S = 32, Fe = 56)?

52.

Calculate the radius of a capillary tube if water rises to a height of 12.5 cm within it, assuming the angle of contact between water and glass to be 0° (g = 10 m s^–2 , r = 1 ´ 10³ kg m^–3 ).

53.

What will be the value of the equivalent weight of KBrO3 in the following ionic equation?

2BrO₃^– + 12H⁺ + 10e ->Br₂ + 6H₂O

54.Which of the following is the most basic towards B(CH₃)₃

55.     Equal volumes of 0.50 M HCl, 0.25 M NaOH and 2.75 M NaCl are mixed. The molarity of the NaCl solution is

56.     Consider an ideal gas that occupies 2.50 dm³ at a pressure of 3.00 bar. If the gas is compressed isothermally at a constant pressure pext , so that the final volume is 0.500 dm³, calculate the smallest possible value of pext and the work done using pext.

57.     Kc for the reaction A(g) + B(g) ≒ 2C(g) is 3.0 at 400 K. In an experiment a mol of A is mixed with 3 mol of B in a 1-L vessel. At equilibrium 3 mol of C is formed. The value of a will be

58.   A drop of a solution (volume = 0.05 mL) contains 6 ´ 10^-7 mol of H⁺ . If the rate of disappearance of H⁺ is 6.0 ´ 10⁵ mol L^-1 s^-1 , how long will it take for the H⁺ in the drop to disappear?

59.   An acid-base indicator has a Ka = 1.0 ´ 10^-5 . The acid form of the indicator is red and the basic form is blue. Calculate the pH change required to change the colour of the indicator from 80% red to 80% blue.

60.Calculate the useful work done during the reaction
Ag(s)+ 1/2 Cl2(g) -> AgCl(s)
given that E^0Cl2/Cl- =+1.36 V and E^0AgCl, Ag, Cl^- =+0.220 V if pCl2 = 1 and T = 298 K.

61.Consider the following graph pertaining to distillation

The distillate-to-residue ratio is

62.Consider the following FCC unit cells choose the correct option

63.     Which of the following statements is incorrect?

64. Which of the following is arranged in order of increasing radius?

65.The ionization constant of protium in water (H2O ≒ H( ( OH( ( is 1.0 ( 10(14 and that in heavy water (D2O ≒ D( ( OD( ( is 3(0 ( 10(15 . H2O dissociates about

66.      Hydrides as well as halides of which alkaline earth metals tend to polymerize

67.      B2H6 reacts with (CH3)3N to produce

68.      CO32- and SO32- can be distinguished from each other by the production of CO2 and SO2 respectively upon using

69.Which of the following structures correctly represents the resonance hybrid of N2O4?

70.      Which of the following statements is correct?

71.     In the absence of a catalyst, KClO3 undergoes a disproportionation reaction to form

72.      XeO4 contains

73.      AgCl is insoluble in water but readily soluble in a dilute ammonia solution because

74.A mixed oxide of iron, Fe3O4, is represented by

75. The hybridization states of the central atoms in the complexes Fe(CN)63^- , Fe(CN)64^- and Co(NO2)63^- are

76.  Which among the following pairs of complex compounds is an example of linkage isomerism?

77.      Match the following

78.      Which of the following compounds is named incorrectly?

79.     

The major product obtained in the reaction is

80.The final product (III) obtained in the sequence of reactions is

81.Arrange the compounds in order of increasing carbon-carbon single-bond length CH2=CH—CH3 (I), CH2=CH—CH=CH2 (II), HC≡C—CH=CH2 (III) and HC≡C—C≡CH (IV).

82.     

How many among the following structures are aromatic?

83. Which of the following will be obtained by the bromination of ethylbenzene in the presence of light?

84.By which of the following reagents can the following conversion be affected

85.The product obtained in the reaction

86. Give the order of ease of the esterification of the following acids.

87.  Arrange p-toluidine (I), N,N-dimethyl-p-toluidine (II), p-nitroaniline (III) and aniline (IV) in order of decreasing basicity.

88. On oxidation with HNO3, a carbohydrate (C6H12O6) gives a mixture of glycolic acid and tartaric acid.

The carbohydrate can be

89. Nylon-6,6 is so named because it is a polyamide, formed from a

90.The product obtained in the reaction

91.In the organism Mangifera indica, Sapindales is the

92.Information of any one taxon can be derived from

93.Chordata represents ____________ taxonomic category of Man

94.Trypanosoma possesses

95.Which of the following is Incorrect?

96.Agaricus, Ustilago, Puccinia are all

97.Identify the labelled portion in the following diagram

98.Capsid is actually a

99.Cr-Jacob disease is analogous to

100.Statement-1: Certain marine brown and red bryophytes produce large amounts of hydrocolloids.

Statement-2: They produce biflagellate antherozoids.

101.The fuel peat is formed from

102.Selaginella is classified into ___________ class of pteridophytes

103.In angiosperms each embryo-sac has

104.Diploid sporophytes are dominant in the following organisms

105.The common pattern shown in Plum, Rose and Peach, that is they are

106.Identify the placentation type in the following diagram

107.The fibrous part of coconut is

108.The short axis of a monocotyledonous seed possesses

109.Epipetalous androcium is common in

110.Name the plant from the given floral formula

111.Find out the correct option

112.Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem

113.Polyarch vascular bundles generally occur in

114.The cisternae of Golgi bodies are about

115.Xanthophyll can be dissolved completely into

116.The ribosomes of chloroplasts present in the

117.Identify following parts in the given diagram

118.Select the correct option

119.To study any kind of genetic abnormality arising due to change is chromosome number, karyotype is prepared. Which of the following stages are the most suitable to develop a karyotype?

120.Meiosis is evolutionary significant because it results in

121.When does a chromosome appear best to observe shape, size and number of chromosomes?

122.Find the odd one with reference to the factors affecting transpiration

123.All are true except

124.The reduced percentage of dry weight of tissues caused by reduced mineral ions considered toxic is

125.The technique hydroponics was demonstrated by

126.Match the column

Column –I                                                      Column-II

A. Oxygen evolving complex     1.Ribulose bis phosphate

B.   Proton gradient                 2. High oxygen concentration

C.  Calvin cycle                          3.ATP synthesis

D.Photorespiration              4.Pheophytin

                                              5. Protolysis of water

127.Which one of the following is complex V of the ETS?

128.Plant hormone used in brewing industry in malting process

129.Identify the part of the organism in the given diagram

130.In order to obtain a virus-free plants through tissue culture, the best method is

131.Citric acid can be produced in industry from

132.Which one of the following is not a major abiotic factor?

133.The gradual and fairly predictable change in the species composition of a given area is called

134.Presently many marine fish populations around the world are over harvested, endangering the continued existence of some commercially important species-this is a typical example of

135. pollutants from man’s activities like effluents from the industries and homes can radically accelerate the aging process in a lake, the phenomenon is known as

136.Offspring of Cyclostomata are called

137.Which is common among the following group of animals

Exocoetus, Clarias, Pterophyllum, Hippocampus

138.Ascaris is characterised by

139.Polyp and medusa are the part of following organisms

140.The fertilisation process of Bombyx is usually

141.The tissue which have a free surface is

142.Identify the labelled parts in the given diagram

143.Blood from sinuses enter heart through __________in cockroach

144.Ootheca contains

145.If a tissue is treated with heat, the ash will contain

146.Name the following amino acid

147.All are secondary metabolites except

148._______________enables glucose transport into cells

149.Blood concentration of glucose in a normal healthy individual is

150.Pulp cavity of teeth is lined by

151.Cardiac glands are present in

152.Succus entericus contains all except

153.Peptones are catalysed by _______ to form dipeptides

154.Total lung capacity is

155.Respiratory rhythm centre is present in

156.A symptom of acute chest pain common in both man and woman is called

157.Juxta medullary nephrons have

158.JGA region is formed by

159.Collecting Duct shows selective secretion of

160.About ________ per cent of the body weight of a human adult is contributed by muscles

161.The anisotropic band contains

162.Name the labelled parts in the given diagram

163.The neurotransmitter which initiates action potential in sarcolemma is

164.Hyoid is present in

165.Each limb is made of __________ bones

166.Decreased levels of estrogen is a common cause of

167.Parthenogenesis is found in

168.Extra embryonic membranes of mammalian embryo are derived from

169.Which of the following gland is homologous to Bartholin ’s gland and helps in lubrication of penis

170.The oral contraceptive pill Saheli contains

171.Multiple alleles are present 

172.Haploids are able to express both recessive and  dominant alleles/mutations because there are 

173.Which one of the following Mendelian diseases is an example of X-linked recessive disorder

174.Statement-1: 5’à3’ strand does not code anything but all the reference point while defining a transcription unit is made with coding strand.

Satement-2: By switching its position with terminator, the definition of coding and template strands could be reversed

175.Identify ‘A’ and the process going on

176. Which option is Correct regarding the following grph of natural selection on different traits

177.Identify the ‘Q’ in the given diagram

178.Recombinant colonies are identified for

179.Nematode-specific genes were introduced into the host plant by

180.In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human ___________ and was nutritionally a more balanced product for human babies than natural cow-milk.