Biology
1.
In the above represented plasmid, an alien piece of DNA is inserted at EcoRI site. Which of the following strategies wi 2. The protein portion of an enzyme is called: 3. Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II 4. Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) 5. Neoplastic characteristics of cells refer to:
A. A mass of proliferating cell
B. Rapid growth of cells
C. Invasion and d 6. Which one of the following is the characteristic feature of gymnosperms? 7. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 8. Which chromosome in the human genome has the highest number of genes? 9. Which of the following statements about RuBisCO is true? 10. The first menstruation is called : 11. Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin? 12. Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) 13. What is the main function of the spindle fibers during mitosis? 14. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 15. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 16. In frog, the Renal portal system is a special venous connection that acts to link: 17. Which of the following are the post-transcriptional events in an eukaryotic cell?
A. Transport of pre-mRNA to cytoplasm 18. Polymerase chain reaction (PCR) amplifies DNA following the equation. 19. Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) 20. Epiphytes that are growing on a mango branch is an example of which of the following?
21. Find the correct statement :
(A) In human pregnancy, the major organ systems are formed at the end of 12 weeks.
(B) In h 22. Identify the part of a bio-reactor which is used as a foam braker from the given figure.
23. Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs.
Choose the correct answer 24. Consider the following statements regarding function of adrenal medullary hormones:
(A) It causes pupilary constriction. 25. Read the following statements on plant growth and development.
(A) Parthenocarpy can be induced by auxins.
(B) Plant gro 26. Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus? 27. Which of the following is an example of non-distilled alcoholic beverage produced by yeast? 28. What is the pattern of inheritance for polygenic trait? 29. Match List-I with List-II.
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.tg td{border-color:black;border-style:sol 30. Which of the following is an example of a zygomorphic flower? 31. Which of following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose 32. Which one of the following is an example of ex-situ conservation? 33. Who is known as the father of Ecology in India? 34. Given below are two statements:
Statement I: In the RNA world, RNA is considered the first genetic material evolved to c 35. Given below are two statements :
Statement 1 : Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II : 36. Match List-I with List-II.
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.tg td{border-color:black;border-style:sol 37. All living members of the class Cyclostomata are : 38. Streptokinase produced by bacterium Streptococcus is used for 39. Role of the water vascular system in Echinoderms is :
A. Respiration and Locomotion
B. Excretion and Locomotion
C. Captu 40. Match List-I with List-II.
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.tg td{border-color:black;border-style:sol 41. Which are correct:
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemother 42. What are the potential drawbacks in adoption of the IVF method?
A. High fatality risk to mother
B. Expensive instruments 43. Consider the following :
A. The reductive division for the human female gametogenesis starts earlier than that of the ma 44. In bryophytes, the gemmae help in which one of the following? 45. Given below are two statements : one is labelled as Assertion (A), and the other is labelled as Reason (R).
Assertion (A 46. Which one of the following statements refers to Reductionist Biology? 47. After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoi 48. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 49. How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspo 50. Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the hum 51. Given below are two statements :
Statement I : Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.
S 52. Given below are two statements : One is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A) : C 53. From the statements given below choose the correct option :
A. The eukaryotic ribosomes are 80S and prokaryotic ribosome 54. Which one of the following enzymes contains 'Haem' as the prosthetic group? 55. What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog? 56. Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence.
A. 57. The blue and white selectable markers have been developed which differentiate recombinant colonies from nonrecombinant c 58. Which of the following microbes is NOT involved in the preparation of household products?
A. Aspergillus niger
B. Lactob 59. Silencing of specific mRNA is possible via RNAi because of 60. The complex II of mitochondrial electron transport chain is also known as 61. While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and 62. Given below are two statements:
Statement I: In a floral formula $\oplus$ stands for zygomorphic nature of the flower, a 63. Given below are two statements:
Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers 64. Which of the following is the unit of productivity of an Ecosystem? 65. With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier 66. In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called: 67. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 68. Who proposed that the genetic code for amino acids should be made up of three nucleotides? 69. Histones are enriched with - 70. Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
71. A specialised membranous structure in a prokaryotic cell which helps in cell well wall formation, DNA replication and re 72. Which factor is important for termination of transcription? 73. Which of the following statement is correct about location of the male frog copulatory pad? 74. Which of the following diagrams is correct with regard to the proximal $(P)$ and distal $(D)$ tubule of the Nephron. 75. Identify the statement that is NOT correct. 76. Match List I with List II :
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.tg td{border-color:black;border-style:so 77. Find the statement that is NOT correct with regard to the structure of monocot stem. 78. Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be t 79. Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the ev 80. Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in p 81. Why can't insulin be given orally to diabetic patients? 82. Name the class of enzyme that usually catalyze the following reaction :
$$S-G+S^{\#} \rightarrow S+S^{\#}-G$$
Where, G $ 83. Given below are two statements:
Statement 1 : The DNA fragments extracted from gel electrophoresis can be used in constr 84. The correct sequence of events in the life cycle of bryophytes is
A. Fusion of antherozoid with egg.
B. Attachment of ga 85. Genes $R$ and $Y$ follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seed 86. Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing ord 87. Match List-I with List- II.
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.tg td{border-color:black;border-style:so 88. Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population? 89. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 90. Cardiac activities of the heart are regulated by:
A. Nodal tissue
B. A special neural centre in the medulla oblongata
C.
Chemistry
1. Identify the suitable reagent for the following conversion.
2. The correct order of decreasing acidity of the following aliphatic acids is 3. Which one of the following reactions does NOT belong to "Lassaigne's test"? 4. If the rate constant of a reaction is $0.03 \mathrm{~s}^{-1}$, how much time does it take for $7.2 \mathrm{~mol} \mathrm 5. Given below are two statements :
Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.
S 6. Out of the following complex compounds, which of the compound will be having the minimum conductance solution? 7. Which of the following aqueous solution will exhibit highest boiling point? 8. Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) 9. Consider the following compounds :
${\mathrm{K\underline{O}}}_2, \mathrm{H}_2 \underline{\mathrm{O}}_2$ and $\mathrm{H}_ 10. Match List - I with List - II.
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.tg td{border-color:black;border-style 11. Given below are two statements :
Statement I: Like nitrogen that can form ammonia, arsenic can form arsine.
Statement II 12. Given below are two statements :
Statement I: Ferromagnetism is considered as an extreme form of paramagnetism.
Statemen 13. Which one of the following reactions does NOT give benzene as the product? 14. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 15. How many products (including stereoisomers) are expected from monochlorination of the following compound?
16. Which of the following statements are true?
A. Unlike Ga that has a very high melting point, Cs has a very low melting p 17. The standard heat of formation, in $\mathrm{kcal} / \mathrm{mol}$ of $\mathrm{Ba}^{2+}$ is :
[Given : standard heat of f 18. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 19. $\mathrm{C}(\mathrm{s})+2 \mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{CH}_4(\mathrm{~g}) ; \Delta \mathrm{H}=-74.8 \ma 20. Sugar ' $X$ '
A. is found in honey
B. is a keto sugar
C. exists in $\alpha$ and $\beta$-anomeric forms.
D. Is laevorotat 21. Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula $\math 22. For the reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons 2 \mathrm{~B}(\mathrm{~g})$, the backward reaction rate cons 23. The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes $n=2 \rightarrow n=3$ and $n=4 \ 24. If the molar conductivity $\left(\Lambda_{\mathrm{m}}\right)$ of a $0.050 \mathrm{~mol} \mathrm{~L}^{-1}$ solution of a 25. 5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures o 26. Among the following, choose the ones with equal number of atoms.
A. 212 g of $\mathrm{Na}_2 \mathrm{CO}_3(\mathrm{~s})$ 27. Which of the following are paramagnetic?
A. $\left[\mathrm{NiCl}_4\right]^{2-}$
B. $\mathrm{Ni}(\mathrm{CO})_4$
C. $\lef 28. If the half-life ( $t_{1 / 2}$ ) for a first order reaction is 1 minute, then the time required for $99.9 \%$ completion 29. Energy and radius of first Bohr orbit of $\mathrm{He}^{+}$and $\mathrm{Li}^{2+}$ are [Given $\mathrm{R}_{\mathrm{H}}=2.1 30. Among the given compounds I-III, the correct order of bond dissociation energy of C-H bond marked with * is :
31. Dalton's Atomic theory could not explain which of the following? 32. Identify the correct orders against the property mentioned
A. $\mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3>\mathrm{CHCl}_3$-di 33. Match List-I with List-II.
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.tg td{border-color:black;border-style:sol 34. The correct order of decreasing basic strength of the given amines is:
Answer (1)
Sol. Lower is the value of $\mathrm{p 35. The correct order of the wavelength of light absorbed by the following complexes is,
A. $\left[\mathrm{Co}\left(\mathrm{ 36. Which one of the following compounds does not decolourize bromine water? 37. Predict the major product ' $P$ ' in the following sequence of reactions-
38. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 39. Which among the following electronic configurations belong to main group elements?
A. $[\mathrm{Ne}] 3 \mathrm{~s}^1$
B. 40. Which one of the following compounds can exist as cis-trans isomers? 41. Phosphoric acid ionizes in three steps with their ionization constant values $K_{a_1}, K_{a_2}$ and $K_{a_3}$, respectiv 42. Match List-I with List-II
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.tg td{border-color:black;border-style:soli 43. Higher yield of NO in $\mathrm{N}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})$ 44. Given below are two statements :
Statement-I : Benzenediazonium salt is prepared by the reaction of aniline with nitrous 45. The major product of the following reaction is
Physics
1. A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates i 2. An electric dipole with dipole moment $5 \times 10^{-6} \mathrm{Cm}$ is aligned with the direction of a uniform electric 3. A ball of mass 0.5 kg is dropped from a height of 40 m . The ball hits the ground and rises to a height of 10 m . The im 4. The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at $22.5^{\circ}$ from th 5. The kinetic energies of two similar cars $A$ and $B$ are 100 J and 225 J respectively. On applying breaks, car $A$ stops 6. The current passing through the battery in the given circuit, is:
7. Three identical heat conducting rods are connected in series as shown in the figure. The rods on the sides have thermal 8. In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks 9. $A B$ is a part of an electrical circuit (see figure). The potential difference " $V_A-V_B$ ", at the instant when curre 10. A particle of mass $m$ is moving around the origin with a constant force $F$ pulling it towards the origin. If Bohr mode 11. In some appropriate units, time $(t)$ and position $(x)$ relation of a moving particle is given by $t=x^2+x$. The accele 12. A model for quantized motion of an electron in a uniform magnetic field $B$ states that the flux passing through the orb 13. A microscope has an objective of focal length 2 cm , eyepiece of focal length 4 cm and the tube length of 40 cm . If the 14. There are two inclined surfaces of equal length $(L)$ and same angle of inclination $45^{\circ}$ with the horizontal. On 15. A full wave rectifier circuit with diodes $\left(D_1\right)$ and $\left(D_2\right)$ is shown in the figure. If input sup 16. A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of $60^{\circ}$ with it. 17. Two identical charged conducting spheres $A$ and $B$ have their centres separated by a certain distance. Charge on each 18. Two cities $X$ and $Y$ are connected by a regular bus service with a bus leaving in either direction every $T$ min. A gi 19. A container has two chambers of volumes $V_1=2$ litres and $V_2=3$ litres separated by a partition made of a thermal ins 20. De-Broglie wavelength of an electron orbiting in the $n=2$ state of hydrogen atom is close to
(Given Bohr radius $=0.052 21. To an ac power supply of 220 V at 50 Hz , a resistor of $20 \Omega$, a capacitor of reactance $25 \Omega$ and an inducto 22. Which of the following options represent the variation of photoelectric current with property of light shown on the x-ax 23. ┬аA pipe open at both ends has a fundamental frequency $f$ in air. The pipe is now dipped vertically in a water drum to h 24. Two identical point masses $P$ and $Q$, suspended from two separate massless springs of spring constants $k_1$ and $k_2$ 25. The output ( $Y$ ) of the given logic implementation is similar to the output of an/a ________ gate.
26. An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its g 27. In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of 28. Two gases $A$ and $B$ are filled at the same pressure in separate cylinders with movable pistons of radius $r_A$ and $r_ 29. A balloon is made of a material of surface tension $S$ and its inflation outlet (from where gas is filled in it) has sma 30. A bob of heavy mass $m$ is suspended by a light string of length $/$. The bob is given a horizontal velocity $v_0$ as sh 31. A physical quantity $P$ is related to four observations $a, b, c$ and $d$ as follows:
$$P=a^3 b^2 / c \sqrt{d}$$
The per 32. The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to tw 33. The radius of Martian orbit around the Sun is about 4 times the radius of the orbit of Mercury. The Martian year is 687 34. A wire of resistance $R$ is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding fou 35. A photon and an electron (mass $m$ ) have the same energy $E$. The ratio ( $\lambda_{\text {photon }} / \lambda_{\text { 36. A sphere of radius $R$ is cut from a larger solid sphere of radius $2 R$ as shown in the figure. The ratio of the moment 37. An electron (mass $9 \times 10^{-31} \mathrm{~kg}$ and charge $1.6 \times 10^{-19} \mathrm{C}$ ) moving with speed $c / 38. The electric field in a plane electromagnetic wave is given by $$
E_z=60 \cos \left(5 x+1.5 \times 10^9 t\right) \mathrm 39. A body weighs 48 N on the surface of the earth. The gravitational force experienced by the body due to the earth at a he 40. An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then 41. A constant voltage of 50 V is maintained between the points $A$ and $B$ of the circuit shown in the figure. The current 42. The plates of a parallel plate capacitor are separated by $d$. Two slabs of different dielectric constant $K_1$ and $K_2 43. Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier 44. A 2 amp current is flowing through two different small circular copper coils having radii ratio $1: 2$. The ratio of the 45. Consider a water tank shown in the figure. It has one wall at $x=L$ and can be taken to be very wide in the $z$ directio
1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Who proposed that the genetic code for amino acids should be made up of three nucleotides?
A
Jacque Monod
B
Franklin Stahl
C
George Gamow
D
Francis Crick
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Histones are enriched with -
A
Phenylalanine & Leucine
B
Phenylalanine & Arginine
C
Lysine & Arginine
D
Leucine & Lysine
3
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase
Choose the correct answer from the options given below:
A
D and E only
B
B and C only
C
C and D only
D
A and B only
4
NEET 2025
MCQ (Single Correct Answer)
+4
-1
A specialised membranous structure in a prokaryotic cell which helps in cell well wall formation, DNA replication and respiration is
A
Cristae
B
Endoplasmic Reticulum
C
Mesosome
D
Chromatophores
Paper analysis
Total Questions
Biology
90
Chemistry
45
Physics
45
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