NEET-UG 2013 Question Paper — Set 2

The plant body is thalloid in

Specialized cells for fixing atmospheric nitrogen in Nostoc are

The common characteristics between tomato and potato will be maximum at the level of their

What is common in all the three, Funaria, Dryopteris and Ginkgo?

The pair of quantities having same dimensions is

The displacement 'x' (in meter) of a particle of mass 'm' (in kg) moving in one dimension under the action of a force is related to time 't' (in sec) by t = √x + 3. The displacement of the particle when its velocity is zero, will be

Which one of the following is wrongly matched?

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicine, Sweet pea, Petunia, Indigofera, Mustard, Soyabean, Tobacco and groundnut how many plants have corolla with valvate aestivation?

How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?

Which of the following statements is not true for stomatal apparatus?

Meristematic tissue responsible for increase in girth of tree trunk is

Inflorescence is racemose in

During the metaphase stage of mitosis spindle fibres attach to chromosomes at

Uridine, present only in RNA is a

The term ‘glycocalyx’ is used for

Vectors 𝐀⃗ 𝐁⃗ and 𝐂⃗ are such that: 𝐀⃗ 𝐁⃗ = 0 and 𝐀⃗ .𝐂⃗ = 0. Then the vector parallel to 𝐀⃗ is.

Which of the following type of plastids does not contain stored food material?

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is

During meiosis I, the chromosomes start pairing at

A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally. If each bullet has a mass of 10 g with a muzzle velocity of 800 m s⁻¹. The final velocity acquired by the person and the average force exerted on the person are

Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N₂) to the atmosphere?

A particle with total energy E is moving in a potential energy region U(x). Motion of the particle is restricted to the region where

One coolie takes 1 minute to raise a suitcase through a height of 2 m but the second coolie takes 30 s to raise the same suitcase to the same height. The powers of two coolies are in the ratio of

Which of the following best illustrates FEEDBACK in development?

The viability of seeds is tested by

Two discs are rotating about their axes, normal to the discs and passing through the centres of the discs. Disc D₁ has 2 kg mass and 0.2 m radius initially angular velocity of 50 rad s⁻¹. Disc D₂ has 4 kg mass, 0.1 m radius and initial angular velocity of 200 rad s⁻¹. The two discs are brought in contact due to face, with their axes of rotation coincident. The final angular velocity (in rad s⁻¹) of the system is

The radius of the earth is R and the radius of earth. Both have almost equal average mass-density. If Vₚ and V_E are escape velocities of the planet and the earth, respectively, then

A particle of mass m is kept at rest at a height 3R from the surface of earth, where R is radius of earth and M is mass of earth. The minimum speed with which it should be projected, so that it does not return back, is (g is acceleration due to gravity on the surface of earth)

The pineapple which under natural conditions is difficult to blossom has been made to produce fruits throughout the year by application of

Which of the following elements is a constituent of biotin?

Bundle sheath cells

Which one of the following statements is correct?

Megaspores are produced from the megaspore mother cells after

Syngamy can occur outside the body of the organism in

Animal vectors are required for pollination in

If the ratio of diameters, lengths and Young's modulus of steel and copper wires shown in the figure are p, q and s respectively, then the corresponding ratio of increase in their lengths would be

Which of the following statements is correct?

Albuminous seeds store their reserve food mainly in

Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as

A fluid is in streamline flow across a ‘horizontal pipe of variable area of cross section. For this which of the following statements is correct?

The density of water at 20°C is 998 kg/m³ and at 40°C is 992 kg/m³. The coefficient of volume expansion of water is

Two metal rods 1 and 2 of same lengths have same temperature difference across their ends. Their thermal conductivities are K₁ and K₂ and cross-sectional areas A₁ and A₂, respectively. If the rate of heat conduction in rod 1 is four times that in rod 2, then

Which of the following is not a property of the genetic code?

Genetic variation in a population arises due to

Satellite RNAs are present in some

A system is shown in the figure to a state c by two paths adc and abc. The internal energy at a is Uₐ = 10 J. Along the path adc the system absorbs δQ₁ = 50 J and the work done is δW₁ = 20 J, whereas along the path abc the heat absorbed is Q₂ = 36 J. The amount of work done along the path abc is

One of the most frequently used techniques in DNA fingerprinting is

Which one of the following vectors is used to replace the defective gene in gene therapy?

Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?

Which of the following statements is not true about somatic embryogenesis?

Genes of interest can be selected from a genomic library by using

During the process of isolation of DNA, chilled ethanol is added to

RNA interference involves

Benthic organisms are affected most by

Which of the following has maximum genetic diversity in India?

Which organization publishes the Red Data Book?

The largest tiger reserve in India is

The second commitment period for Kyoto Protocol was decided at

Which one of the following is a primary consumer in maize field ecosystem?

The characteristics of class Reptilia are :

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T₁ and rejects heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects it to the sink at temperature T₂. For what value of T are the efficiencies of the two engines equal?

In a vessel, the gas is at a pressure P. If the mass of all the molecules is halved and their speed is doubled, then the resultant pressure will be

Which one of the following animals is correctly matched with its one characteristic and the taxon?

Which one of the following groups of animals reproduces only by sexual means?

Sharks and dogfishes differ from skates and rays by

Identify the tissue shown in the diagram and match with its characteristics and its location

A particle of mass m oscillates along x-axis according to equation x= a sin ωt. The nature of the graph between momentum and displacement of the particle is

Select the correct option with respect to cockroaches

Select the alternative giving correct identification and function of the

organelle ‘A’ in the diagram.

The length of the wire between two ends of a sonometer is 100 cm. What should be the positions of two bridges below the wire so that the three segments of the wire have their fundamental frequencies in the ratio of 1: 3 : 5 ?

Why is a capsule advantageous to a bacterium?

Two sources P and Q produce notes of frequency 660 HZ each. A listener moves from P to Q with a speed of 1 ms⁻¹ If the speed of sound is 330 m/s, then the number of beats heard by the listener per second will be

Which of the following statements about enzymes is wrong?

A charge ‘q’ is placed at the centre of the line joining two equal charges ‘Q’. The system of the three charges’ will be in equilibrium if‘ "q” is equal to

An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90⁰ is

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following option is correct?

A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics?

A healthy person eats the following diet – 5 gm raw sugar, 4 gm albumin, 10 gm pure buffalo ghee adulterated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories is he likely to get?

Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth and as it moves down the alimentary canal?

Which one of the following is one of the paths followed by air/O₂ during respiration in an adult male Periplaneta americana as it enters the animal body?

The figure shows a human blood cell. Identify it and give its characteristics.

Figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part:

Two rods are joined end to end, as shown. Both have a cross-sectional area of 0.01 cm². Each is 1 meter long . One rod is of copper with a resistivity of 1.7 x 10⁻⁶ ohm -centimeter, the other is of iron with a resistivity of 10⁻⁵ ohm-centimeter.

How much voltage is required to produce a current Of 1 ampere in the rods?

Select the correct statement with respect to disorders of muscles in humans

Select the option which shows correct matching of animal with excretory organs and excretory product.

A 12 cm wire is given a shape of a right angled triangle ABC having sides 3 cm, 4 cm and 5 cm as shown in the figure. The resistance between two ends (4B, BC, CA) of the respective sides are measured one by one by a multi meter. The resistances will be in the ratio of

Ten identical cells connected in series are needed to heat a wire of length one meter and radius ‘r' by 10°C in time 't'. How many cells will be required to heat the wire of length

two meter of the same radius by the same temperature in time ‘t'?

A long straight wire carries a certain current and produces a magnetic field of 2 x 10⁻⁴ weber/m² at a perpendicular distance of 5cm from the wire. An electron situated at 5 cm

from the wire moves with a velocity 10⁷ m/s towards the wire along perpendicular to it. The force experienced by the electron will be

(charge on electron =1.6 x 10⁻¹⁹ C)

A circular coil ABCD carrying a current i is placed in a uniform magnetic field. If the magnetic force on the segment AB is 𝐅⃗, the force on the remaining segment BCDA is

A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will

be

A current of 2.5 A flows through a coil of inductance 5 H. The magnetic flux linked with the coil is

The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1 mA. The number of turns of the primary and secondary windings are 50 and 100 respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively

An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity ε =4.0. Then

Two plane mirrors are inclined at 70°. A ray incident on one mirror at angle 0 after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of 0 is

In Young’s double slit experiment the distance between the slits and the screen is doubled. The separation between the slits is reduced to half. As a result the fringe width

A parallel beam of light of wavelength . is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam.

At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of slit is

The de-Broglie wavelength of neutron in thermal equilibrium at temperature T' is

A source of light is placed at a distance of 50 cm from a photocell and the stopping potential is found to be V₀. If the distance between the light source and photocell is made 25 cm, the new stopping potential will be

An electron in hydrogen atom makes a transition n₁ → n₂ where n₁ and n₂ are principal quantum numbers of the two states. Assuming Bohr's model to be valid the time period of the electron in the initial state is eight times that in the final state. The possible values of n₁ and n₂ are

How does the binding energy per nucleon vary with the increase in the number of nucleons?

During muscle contraction in humans the

α-particles, β-particles and γ-rays are all having same energy. Their penetrating power in a given medium in increasing order will be

In an unbiased p-n junction, holes diffuse from the p-region to n-region because of

One way in which the operation of a n-p-n transistor differs from that of a p-n-p

The output from a NAND gate is divided into two in parallel and fed to another NAND gate. The resulting gate is a

The ratio of radii of gyration of a circular ring and a circular disc, of the same mass and radius, about an axis passing through their centres and perpendicular to their planes are

A charge g is located at the centre of a cube. The electric flux through any face is

In an experiment it showed that 10 mL of 0.05 M solution of chloride required 10 mL of 0.1 M solution of AgNO₃. Which of the following will be the formula of the chloride (X stands for the symbol of the element other than

According to the law of photochemical equivalence, the energy absorbed (in ergs/mole) is given as (h = 6.62 × 10⁻²⁷ erg s, c = 3 × 10¹⁰ cm s⁻¹, Nₐ = 6.02 × 10²³ mol⁻¹)

Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?

In which of the following pair both the species have sp³ hybridization?

A sagittal section of human‑brain is shown here. Identify at least two labels from A‑D.

The figure shows an axon terminal and synapse. Select the option giving correct identifications of labels A‑D

Which of the following represents the action of insulin?

Norepinephrine: (1) Is released by sympathetic fibres

(2) Is released by parasympathetic fibres

(3) Increases the heart rate

(4) Decreases blood pressure

Which of the above said statements are correct?

The figure shows a section of human ovary. Select the option which gives the correct identification of A and B with function/characteristic

Select the option which correctly matches the endocrine gland with its hormone and its function.

One of the following is not a method of contraception – which one?

The foetal ejection reflex in humans triggers release of

‘Which one of the following statements is correct rega Sexually Transmitted Diseases (STD)?

The stage transferred into the uterus after induced fertilization of ova in the laboratory is

Which one is the incorrect statement with regards to the importance of pedigree analysis?

In our society women are blamed for producing female children. Choose the correct answer for the sex‑determination in humans

Down’s syndrome in humans is due to

The figure gives an important concept in the genetic implication of DNA. Fill the blanks A, B and C.

In an inducible operon, the genes are

The finch species of Galapagos Islands are grouped according to their food sources. Which of the following is

Dinosaurs dominated the world in which of the following geological era?

Identify the site where Wuchereria bancrofti is normally found on human body

Which one of the following is a hallucinogenic drug?

Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising

Microbe used for biocontrol of pest butterfly caterpillars is

The age pyramid with broad base indicates

When man eats fish which feeds on zooplankton which have eaten small plants, the producer in the chain is

Which one of the following is not a parasitic adaptation?

Climate of the world is threatened by

Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5 micro meters or less?

The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent sp² orbitals. The total number of sigma (σ) and pi (π) bonds in ethene molecule is

In which of the following ionisation processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic?

The pair of species that has the same bond order in the following is:

What is the density of N₂ gas at 227°C and 5.00 atm pressure? (R = 0.0821 atm K⁻¹ mol⁻¹)

When 5 litres of a gas mixture of methane and propane is perfectly combusted at 0°C and 1 atmosphere, 16 litre of oxygen at the same temperature and pressure is consumed. The amount of heat released from this combustion in kJ (ΔH_comb (CH₄) = 890 kJ mol⁻¹, ΔH_comb (C₃H₈) = 2220 kJ mol⁻¹) is

Three thermochemical equations are given below:

(i) C(graphite) + O₂(g) → CO₂(g); ΔᵣH° = x kJ mol⁻¹

(ii) C(graphite) + ½ O₂(g) → CO(g); ΔᵣH° = y kJ mol⁻¹

(iii)CO(g) + ½ O₂(g) → CO₂(g); ΔᵣH° = z kJ mol⁻¹

Based on the above equations, find out which of the relationship given below is correct?

At 100°C the K_w of water is 55 times its value at 25°C. What will be the pH of neutral solution? (log 55 = 1.74)

Accumulation of lactic acid (HC₃H ₅o₃, a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M aqueous solution, lactic acid is 3.7% dissociated. The value of dissociation constant, Ka, for this acid will be:

The values of K_sp of CaCO₃ and CaC₂O₄ are 4.7 × 10⁻⁹ and 1.3 × 10⁻⁹ respectively at 25°C. If the mixture of these salts is washed with water, what is the concentration of Ca²⁺ ions in water?

The dissociation constant of a weak acid is 1 × 10⁻⁴. In order to prepare a buffer solution with a pH = 5, the [Salt]/[Acid] ratio should be

In Castner-Kellner cell for production of sodium hydroxide:

Which statement is wrong?

Arrange the following in increasing order of stability

Homolytic fission of the following alkanes forms free radicals CH₃ – CH₃, CH₃ – CH₂ – CH₃, (CH₃)₂CH – CH₃, CH₃ – CH₂ – CH(CH₃)₂. Increasing order of stability of the radicals is

What is the hybridisation state of benzyl carbonium

Nitrogen detection in an organic compound is carried out by Lassaigne’s test. The blue colour formed corresponds to which of the following formulae?

In the following reaction :

Product ‘P’ will not give

Which of the following chemical system is non aromatic?

Which one of the following statements is not true?

How many grams of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u)

Consider the half-cell reduction reaction: Mn²⁺ + 2e⁻ → Mn, E° = -1.18 V Mn²⁺ → Mn³⁺ + e⁻, E° = -1.51 V The E° for the reaction 3Mn²⁺ → Mn⁰ + 2Mn³⁺, and possibility of the forward reaction are, respectively

A reaction is 50% completed in 2 hours and 75% completed in 4 hours. The order of

For a reaction between A and B the order with respect to A is 2and the order with respect to Bis 3. The concentrations of both A and B are doubled, the rate will increase by a factor of :

The metal oxide which cannot be reduced to metal by

carbon is

Identify the incorrect statement, regarding the molecule XeO₄:

Sc (Z = 21) is a transition element but Zn (Z = 30) is not because

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

In a cymose inflorescence the main axis

The correct IUPAC name for [CrF₂(en)₂]Cl is:

In a particular isomer of [Co(NH₃)₄Cl₂] ⁰, the Cl–Co–Cl angle is 90°.

the isomer is known as .

Which is diamagnetic?

The anion of acetylacetone (acac) forms Co(acac)₃ chelate with Co³⁺. The rings of the chelate are

Which among the following is a paramagnetic complex?

(At. No. of Mo = 42, Pt = 78)

Phenol is distilled with Zn dust followed by Friedel Crafts alkylation with propyl chloride in the presence of AlCl₃ to give a compound (B). (B) is oxidised in the presence of air to form the compound (C). The structural formula of (C) is

Some reactions of amines are given. Which one is correct ?

On hydrolysis of a “compound”, two compounds are obtained. One of which on treatment with sodium nitrite and hydrochloric acid gives a product which does not respond to iodoform test. The second one reduces Tollen’s reagent and Fehling’s solution. The “compound” is

In DNA, the linkages between different nitrogenous bases are :

Dettol is the mixture of

Which condition is not satisfied by an ideal solution?

The outer electronic configuration of Gd (At. No. 64) is:

Number of isomeric alcohols of molecular formula C₆H₁₄O which give positive iodoform test is

Arrange the following in increasing order of stability