Grand Test 16 for NEET 2021

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51.Calculate the longest wavelength (in angstrom) which can remove the electron from first Bohr’s orbit. (E₁ = 13.6 eV)

52.Ethyl benzene when treated with chlorine in the presence of light mainly gives,

53.Gold numbers of protective colloids A, B, C and D are 0.5, 0.01, 0.10 and 0.005 respectively. The correct order of their protective power is,

54.The amount of Ca(OH)₂ required to remove the hardness of water from 60,000 liters containing 16.2 g of Ca(HCO₃)₂ per 100 L is,

55.Out of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe), which one is expected to have the highest second ionization enthalpy?

56.The major product of the following reaction is,

57.Which of the following is an inter-pseudohalogen?

58.The product of acid catalyzed hydration of 2-phenylpropene is

59.Some properties of the two species, nitrate and hydronium ion are described below. Which of the following is correct?

60.Allylic bromination of an olefin is

61.Nodal planes of π-bond(s) in CH₂=C=C=CH₂ are located as,

62.The correct systematic IUPAC name of the given compound is

63.An ideal monoatomic gas follows the path ABCD. The work done during the complete cycle is

64.A compound exists in the gaseous phase both as monomer (A) and dimer (A₂). The molecular weight of A is 48. In an experiment 96 g of the compound was confined in a vessel of volume 33.6 L and heated to 273^o The pressure developed if the compound exists as dimer to the extent of 50% by weight under these conditions is

65.Heating H₂C₂O₄, produces gas (A), gas (B) and liquid (C). Gas (A) burns with blue flame and is oxidised to gas (B). Gas (B) reacts with NH₃ and produces (D), which on heating produces (E), A, B, C and E are respectively,

66.Vitamin C contains 40.92% C, 4.58 % H and 54.50% O by mass. If molecular weight of ascorbic acid is 176 g mol-1, what is the molecular formula of Vit C?

67.Acetone and chloroform form a non-ideal solution. If 116 g of acetone is mixed with 239 g of chloroform and their vapour pressure in pure state at 298 K are 360 torr and 300 torr respectively, then what would be vapour pressure of the above solution at 298 K?

68.Which of the following complexes has magnetic moment of 2.83 BM?

69.In which of the following pairs the radius of the second species is greater than that of the first?

70.The value of t_1/2 for a first order reaction is 14.26 mins. The percentage of reactant decomposed after 50 s is,

71.Identify a reagent from the following which can easily distinguish between but-1-yne and but-2-yne.

72.Identify the statement which is correct w.r.t surface phenomenon.

73.The plot of log₁₀K vs. 1/T leads to a straight-line having intercept equal to

74.In a first order reaction, the initial amount of a substance becomes 1/3 in 100 seconds. How much time will be taken to reduce the concentration to 1/9 of the initial concentration?

75.The compound Y in the following reaction is,

which of the following option is correct?

76.A binary solid (A⁺B^–) has a zinc blende structure with B^– ions constituting the lattice and A⁺ ions occupying 25% tetrahedral holes. The formula of the solid is,

77.Which of the statements about primary amines is false?

78.Which one of the following pairs of reactants does not form oxygen when they react with each other?

79.The resistance of 0.5 N solution of an electrolyte in a conductivity cell was found to be 25 ohms. Calculate the equivalent conductivity of the solution if the electrodes in the cell are 1.6 cm apart and have an area of 3.2 cm².

80.When neopentyl bromide is subjected to Wurtz reaction, the product formed is

81.Which of the following statements is not correct regarding ionization energy of d-series?

82.The bond dissociation energies of H-H, C-C and C-H bonds respectively are 104.2, 83.1 and 98.8 kcal/mol. The electronegativity of carbon is

83.A ball is moving 200 g is moving with a velocity of 10 m/s. If the error in measurement of velocity is 0.1%, the uncertainty in its position is,

84.Which of the following alcohols is most reactive with HCl in the presence of ZnCl₂?

85.The number of geometrical isomers in case of a compound with the structure,

CH₃-CH=CH-CH=CH-C₂H₅

86.To prepare a buffer of pH 8.26 amount of (NH₄)SO₄ to be added to 500 mL of 0.01 M NH4OH solution [pKa (NH₄⁺) = 9.26] is,

87.A complex is prepared by mixing CoCl₃ and NH₃. 0.1 M solution of the complex was found to freeze at -0.372^o The formula of the complex is, [K_f of water = 1.86 ^oC/m]

88.H₂O₂ used in rocket has the concentration

89.The gases that give rise to photochemical smog are,

90.Compressibility factor (Z) for N₂ at -50^oC and 800 atm pressure is 1.95. Calculate the number of moles of N₂ gas required to fill a gas cylinder of 100 mL capacity under the given conditions.

91.An organic compound contains C, H, N, S and Cl. For the detection of chlorine, the sodium extract of the compound is first heated with a few drops of dilute HNO₃ and then AgNO₃ is added to get a white ppt. of AgCl. The digestion with HNO₃ before the addition of AgNO₃ is,

92.The hormone which controls the processes of burning of fats, proteins and carbohydrates and liberated energy in the body is

93.Natural rubber has,

94.In the following Ellingham diagram X, Y and Z represent graphs for metal oxides. Select the correct option before point A

95.A student is given a solution which may contain carbonate ions. She decides to add aqueous barium nitrate to the solution first, followed by dilute nitric acid. Choose the correct statements about her experiment.

96.Amoxicillin is semi-synthetic modification of

97.The order of root mean square velocity of H₂, N₂, O₂ and HBr at NTP is

98.The isomers [{(C₆H₅)₃P}Pd(SCN)₂] and [{(C₆H₅)₃P}Pd(CNS)₂] refer to:

99.The method of zone refining of metals is based on the principle of:

100.Which of the following is oil/water emulsion?

101.Kingdom Monera does not comprises

102.Match the Column

103.Which are not the features of Ascomycetes?

I.The mycelium is aseptate and coenocytic

II.Mycelium is branched and septate

III.Conidia on germination produce mycelium

IV.Asexual reproduction takes place by Aplanospores

104.The main compound of crystals of virus is

105.Leaf rolling and curling along with yellowing and vein clearing in plants are caused by

106.The causative agent in potato spindle tuber disease is composed of

107.Ferns are categorised into the group

108.Strobili or cones in Selaginella are modified

109.Floridean starch is basically storage food of

110.Which of the following statement is wrong?

111.

Hint: Asparagus is a vegetable plant.

1. Which of the following statement(s) is true for the given floral diagram

I.Flower is bisexual , actinomorphic and ovary is superior

II.Floral formula will be

III.This is a floral diagram of Chilli

IVFruits of this plants are basically berry type

112.Which of the following cannot be defined as organelles

113.In motile bacteria the extensions are

114.Identify the following parts in the given diagram

115.Find out the wrong statement

116.The thylakoids of the different grana are connected by

117.Asters are

118.Phenomenon-1: Centromeres split and chromatids separate.

Phenomenon-2: Chromatids move to opposite poles.

The following two phenomenons are

119.The endosperm of coconut is a typical example of

120.The beginning of __________ is recognised by the dissolution of the synaptonemal complex

121.Genetic variability in the population of organisms is due to

122.Crossing over is facilitated by

123. Male honey bees are results of

124.Chlorophyll a shows maximum absorption of wavelengths

125.Identify the complex and A in the given diagram

126.Assertion: This whole scheme of transfer of electrons, starting from the PS II, uphill to the acceptor, down the electron transport chain to PS I, excitation of electrons, transfer to another acceptor, and finally downhill to NADP+ reducing it to NADPH + H+ is called the Z scheme

Reason: This Z shape is formed when all the carriers are placed in a sequence on a redox potential scale

127.Which of the following statement(s) is not true for the Law of Limiting Factors

128.In muscles during exercise, when oxygen is inadequate for cellular respiration pyruvic acid is reduced to lactic acid by lactate dehydrogenase. The reducing agent is

129.In the following reaction Q is

130.Find out the wrong statement

131.Sporopollenin is absent in the

132.Which of the following is/are correct about sex-linked recessive inheritance?

P.Most affected individuals are male

Q.affected females come from affected fathers and affected or carrier mother

R.The sons of affected females should be affected

S.their trait does not skip generations

133.Isotopes used for proving semiconservative replication of DNA are

134. Which of the following statement(s) is true?

I. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies
II. ‘Toddy’, a traditional drink of some parts of southern India is made by fermenting sap from palms
III. Treatment of waste water is done by incorporating heterotrophic microbes into the sewage
IV. The very familiar beetle with red and black markings – the Ladybird, and Dragonflies are useful to get rid of aphids and mosquitoes, respectively

135.Expanding population is characterised by

P.A pyramid shaped age structure

Q.An urn shaped age structure

R.Pre-reproductive and reproductive age groups become more or less equal in size

S.Rapidly growing populations with high birth rate

136.Which one is the bread mould in the following options

137.Non-membrane bound organelle ribosomes are found in

138.___________ is the key product of glycolysis

139.In some cereals such as rice and wheat, pollen grains lose viability within

140.Mule is a result of

141.Which of the following statements about the food chain and energy flow through ecosystem is false?

142.Spines of cacti is

143.The common thing in Mustard, china rose and Brinjal is that they all have

144.Identify A, B, C,D in the given diagram

145.___________ movement is dependent on the gradient

146.The C4 acid OAA is formed in

147.Which one of the following is responsible in activating plant enzymes for photosynthesis?

148.2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants- Here 2, 4-D is

149.Vernalisation is defined by

150.Many algae such as Volvox, Spirogyra and some species of Chlamydomonas represent this pattern of life cycle

151.Match the Column

152.Find out the common thing in the given group, of organism

Wuchereria, Anchylostoma, Pheretima, Hirudinaria

153.Arachidonic acid is comprised of

154.Which of the following statemnet(s) is/are correct?

I.Rate of a physical or chemical process refers to the amount of product formed per unit time.

II.Inorganic catalysts work efficiently at high temperatures and high pressures

III.There are some nucleic acids that behave like enzymes. These are called ribosomes

IV.The most important fact of biological systems is that all living organisms exist in a steady-state characterised by concentrations of each of these biomolecules

155.Which of the following is incorrect statement?

156.Which type of the enzyme will catalyse the following type of reaction?

157.Assertion: Succinic dehydrogenase is inhibited by malonate in a reaction

Reason: Competitive inhibition

158.The tidal volume of a man is

159.All are true except?

160.Carbonic anhydrase is present in

161.When alveolar walls are damaged due to which respiratory surface is decreased, this lead to

162.On an average, a healthy human breathes 12-16 times/minute, this rhythm is maintained by

163.Nearly __________ per cent of carbon dioxide is transported as bicarbonate (HCO3 – ) with the help of the enzyme carbonic anhydrase

164.A sigmoid curve or Oxygen dissociation curve is obtained when

165.Platelets are derived from

166.Most abundant WBC in the blood is

167.Identify the following in the given diagram

168.Erythroblastosis foetalis can be avoided by administrating

169.Fibrins are formed by

170.Stroke volume of a normal individual is

171.

In the  above diagram T-wave represents

172.In the distal convoluted tubule of the nephrons

173.The majority of reabsorption takes place in

174.Which of the following is false

175.Acromegaly is the result of

176.Exophthalmic goitre is due to

177.Islets of Langerhans in a normal human pancreas representing what percentage of the pancreatic tissue?

178.Epinephrine secretes from

179.The type of atrial natriuretic factor is

180.During ovulation the following occur except?

181.Saheli–the new oral contraceptive for the females contains

182.Cell-mediated immunity (CMI) is mediated by

183.The first step of PCR is

184.Which of the following statement is wrong about GMO?

185.A nematode Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield-this was prevented by

186.In Periplaneta sperms are stored in

187.The gastric gland cells whose absence lead tob pernicious anaemia

188.Glisson’s capsule’s function is

189.Identify the following in the given diagram

190.Which part of myosin has the active site for ATPase?

191.Which type of synapse is present in our Human system?

192.Labyrinth is filled with

193.Parathyroid hormone (PTH) _____________ the Ca2+ levels in the blood

194.Darwinian Theory of Evolution comprises the concept of