Archives: Quizzes & Surveys

NEET TEST SERIES 145 BIOLOGY

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11. When does the Oxygen dissociation curve shift to the right?

(a) Decrease in acidity
(b) Increase in carbon dioxide concentration
(c) Decrease in temperature
(d) Decrease in pH

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12. How many sperms are formed from a secondary spermatocyte?

(a) 4
(b) ৪
(c) 2
(d) 1

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13. In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by:

(a) p²
(b) 2pq
(c) pq
(d) q²

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14. Which one of the following hormones maintains the Pregnancy in second trimester?

a) LH (luteinizing hormone)
b) progesterone
c) estrogen
d) hCG (human Chorionic Gonadotropin)

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15. Volume of air that will remain in the lungs after a normal expiration is:

(a) FRC
(b) VC
(c) ERV
(d) IRV

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16. The diagram given here is the standard ECG of a normal person. The P-wave represents the:

(a) Contraction of both atria
(b) Initiation of the ventricular contraction
(c) Beginning of the systole
(d) End of the systole

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17. Following are the two statements regarding the origin c life:
(i) The earliest organisms that appeared on the eart were non-green and presumably anaerobes.
(ii) The first autotrophic organisms were the chemoautor trophs that never released oxygen.
(a) (ii) is correct but (i) is false
(b) Both (i) and (ii) are correct
(c) Both (i) and (ii) are false
(d) (i) is correct but (ii) is false

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18. MALT is considered as the secondary lymphoid organ which is located within the lining of major tracts in th body. Here, MALT stands for:

(a) Metaderm Associated Lymphoid Tissues
(b) Medulla Associated Lymphoid Tissues
(c) Mucosal Associated Lymphoid Tissues
(d) Mucosal Associated Leukemia Tissues

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19. Identify the wrong statement regarding evolution.

a) Darwin’s variations are small and directional.
b) Mutations are random and non-directional.
c) Adaptive radiations leads to divergent evolution.
d) Mutations are non-random and directional.

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20. Choose the correct option for P, Q, R and S

(a) ‘P’-A, AB; ‘Q’-B, AB; ‘R’-AB, A, B, O; ‘S’-O
(b) ‘P’-A; ‘Q’-O, A, B, AB; ‘R’-AB, A, B, O; ‘S’-A, B
(c) ‘P’-O; ‘Q’-B, AB; ‘R’-A; ‘S’-AB, A, B, O
(d) ‘P’-O; ‘Q’-O, A, B, AB; ‘R’-B; ‘S’-AB

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May 12, 2025
NEET TEST SERIES 144 BIOLOGY

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May 12, 2025
NEET TEST SERIES 143 BIOLOGY

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May 12, 2025
NEET TEST SERIES 142 BIOLOGY

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May 12, 2025
NEET TEST SERIES 141 BIOLOGY

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May 12, 2025
NEET TEST SERIES 140 CHEMISTRY

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May 12, 2025
NEET TEST SERIES 139 CHEMISTRY

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May 12, 2025
NEET TEST SERIES 138 PHYSICS

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May 12, 2025
NEET TEST SERIES 135 CHEMISTRY

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1. The segment of DNA which acts as the instrumental manual for the synthesis of the protein is:

(a) ribose
(b) gene
(c) nucleoside
(d) nucleotide
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2. Deselect Answer

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3. The electrode potentials for

Cu²⁺(aq)+ e^– Cu⁺ (aq) and Cu⁺(aq)+ e^– Cu(s) are + 0.15V and + 0.50V respectively. The value of E° Cu⁺²/Cu will be:

(a) 0.325V
(b) 0.650V
(c) 0.150V
(d) 0.500V
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4. The pair of species with the same bond order is

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5. Which of the following processes does not involve oxidation of iron?

a) Rusting of iron sheets.
b) Decolourization of blue CuSO₄ solution by iron.
c) Formation of Fe (CO)₅ from Fe.
d) Liberation of H₂ from steam by iron at a high temperature.
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6. Consider the following reactions:

Enthalpy of formation of H₂O(l) is:

(a) -x₂ kJ mol^-1
(b) +x₃ kJ mol^-1(c) -x₄ kJ mol^-1(d) +x₁ kJ mol^-1

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7. The correct order of increasing bond angles in the following species is:

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9. A magnetic moment of 1.73 B.M. will be shown by one among the following:

(a) [Cu(NH₃)₄]²⁺(b) [Ni(CN)₄]^2-(c) TiCl₄(d) [CoCl₆]^4-Deselect Answer

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10. Which of the following acid does not exhibit optical isomerism

(a) Maleic acid
(b) α-amino acid
(c) Lactic acid
(d) Tartaric acidDeselect Answer

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11. Which of the following is the electron deficient molecule?

(a) B₂H₆(b) C₂H₆(c) PH₃(d) SiH₄Deselect Answer

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12. Which one of the following species does not exist under normal conditions?

(a) Be₂⁺(b) Be₂(c) B₂(d) Li₂Deselect Answer

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13. The hydrogen ion concentration of a 10^-8 M HCl aqueous solution at 298 K (K_w = 10^-14) is :

(a) 1.0 × 10^-6 M
(b) 1.0525 × 10^-7 M
(c) 9.525 × 10^-8 M
(d) 1.0 × 10^-8 MDeselect Answer

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14. Reaction of HBr with propene in the presence of peroxide gives:

(a) iso-propyl bromide
(b) 3-bromo propane
(c) allyl bromide
(d) n-propyl bromideDeselect Answer

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15. In a first order reaction, A⟶B, if k is rate constant and initial concentration of the reaction A is 0.5 M, then the half-life is:

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16. Replacement of Cl of chlorobenzene to give phenol requires drastic conditions. But chlorine of 2,4-dinitrochlorobenzene is readily replaced’

a) NO₂ donates electron at meta position

b) NO₂ withdraws electron from ortho/para positions

c) NO₂ make ring electron rich at ortho & para position

d) NO₂ withdraws electron from meta position
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17. The number of electrons in 1.6 g of CH₄ is approximately

(a) 25 × 10²⁴
(b) 1.5 × 10²⁴
(c) 6 × 10²⁴
(d) 3.0 × 10²⁴
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18. pH of pure water at 50°C will be?

(a) pH = 7
(b) pH > 7
(c) pH ≥ 7
(d) pH < 7
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19. Which is the correct graphical representation based on photoelectric effect?

(a) I & II
(b) II & III
(c) III & IV
(d) II & IV

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20. Second law of thermodynamics is based on?

a) Energy conservation
b) Entropy
c) Temperature
d) All of these
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May 12, 2025
NEET TEST SERIES 134 CHEMISTRY

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1. Which of the following pair make fastest coupling reaction in acidic medium?

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2. Which of the following statements about the composition of the vapour over an ideal 1: 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25°C [Given, vapour pressure data at 25°C, benzene = 12.8kPa , toluene = 3.85 kPa]

a) The vapour will contain equal amounts of benzene and toluene.
b) Not enough information is given to make a prediction.
c) The vapour will contain a higher percentage of benzene.
d) The vapour will contain a higher percentage of toluene.
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3. Compound A, C₈H₁₀O is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively.

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4.

(a) sp, sp³ and sp²’
(b) sp², sp³ and sp
(c) sp, sp² and sp³
(d) sp², sp and sp³
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5. The correct difference between first and second order reactions is that:

a) A first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed.

b) The half-life of a first-order reaction does not depend on [A]₀; the half-life of a second-order reaction does depend on [A]₀.

c) The rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations.

d) The rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations.
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6. Predict the correct intermediate and product in the following reaction.

Intermediate ————> Product
(A) (B)

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7. The bond dissociation energies of , and XY are in the ratio of 1: 0.5: 1. AH for the formation of XY is 200 kJ mol^-1. The bond dissociation energy of X₂ will be:

(a) 200 kJ mol^-1
(b) 100 kJ mol^-1
(c) 800 kJ mol^-1
(d) 400 kJ mol^-1
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8. The temperature at which the given reaction is at equilibrium
Ag₂O(s) → 2Ag(s) + (1/2) O₂(g)
∆H = 30.5 kJ and AS = 0.066 kJ mol^-1(a) 462.12 K
(b) 362.12 K
(c) 262.12 K
(d) 562.12 K
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9. Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their:

a) More extensive association of carboxylic acid via van der Waals force of attraction.
b) Formation of carboxylate ion.
c) Formation of intramolecular H-bonding.
d) Formation of intermolecular H-bonding
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10. The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 × 10^-18 g cm s^-1. The uncertainty in electron velocity is:
[mass of an electron is 9 × 10^-28 g ]

a) 1 × 10⁹ cm s^-1b) 1 × 10⁶ cm s^-1c) 1 × 10⁵ cm s^-1d) 1 × 10¹¹ cm s^-1
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11. The number of structural isomers possible from the molecular formula C₃H₉N is:

(a) 4
(b) 5
(c) 2
(d) 3
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12. The correct structure of the product ‘A’ formed in the reaction:

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13. Which of the following is least likely to behave as Lewis base?

(a) NH₃(b) BF₃(c) OH^–(d) H₂ODeselect Answer

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14. Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?

(a) MnO₂
(b) Aluminium isopropoxide
(c) Acetone
(d) OzoneDeselect Answer

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b)

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d)
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15. 0 g of magnesium is burnt with 0.56 g of oxygen in a closed vessel. Which reactant is left in excess and how much? [At. weight of Mg = 24, O = 16

(a) Mg, 0.16 g

(b) O₂, 0.16 g

(c) Mg, 0.44 g

(d) O₂ , 0.28 g
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16. In the reaction with HCl, an alkene reacts in accordance with the Markovnikov’s rule to give a product 1-chloro-1 methyl cyclohexane. The possible alkene is

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17. Which of the following has longest C-O bond length?
[Free C-O bond length in CO is 1.128 Å].

(a) [Fe(CO)₄]^2-(b) [Mn(CO)₆]⁺(c) Ni(CO)₄(d) [Co(CO)₄]^–
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None

18. Amongst the elements with following electronic configurations, which one may have the highest ionization energy?

(a) [Ne] 3s², 3p³(b) [Ne] 3s², 3p²(c) [Ar] 3d¹⁰, 4s², 4p³
(d) [Ne] 3s², 3p¹
Deselect Answer

a)

b)

c)

d)
None

19. In a set of reactions acetic acid yielded a product D.

The structure of D would be

Deselect Answer

a)

b)

c)

d)
None

20. In a set of reaction,ethyl benzene yields a product D.

Deselect Answer

a)

b)

c)

d)
None

May 12, 2025

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