NEET-UG 2011 Question Paper

A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity becomes 40 m/s towards north. The average acceleration of the body is

A boy standing at the top of a tower of 20m height drops a stone. Assuming g=10 ms⁻², the velocity with which it hits the ground is

A missile is fired for maximum range with an initial velocity of 20 m/s. If g=10 m/s² the range of the missile is

A particle moves in a circle of radius 5 cm with constant speed and time period 0.2π s. The acceleration of the particle is

A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is

A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0 m/s². If g=10 ms⁻² the tension in the supporting cable is

Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m is

The potential energy of a system increases if work is done

A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The power exerted by the gravitational force is greatest

The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t) = 2t³ - 6t². The torque on the wheel becomes zero at

The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpendicular to its length is I₀. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is

A planet moving along an elliptical orbit is closest to the sun at a distance r₁ and farthest away at a distance of r₂. If v₁ and v₂ are the linear velocities at these points respectively, then the ratio v₁/v₂ is

During an isothermal expansion, a confined ideal gas does -150 J of work against its surroundings. This implies that

When 1 kg of ice at 0°C melts to water at 0°C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/°C, is

A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time

Out of the following functions, representing motion of a particle, which represents SHM?

(A) y = sin(ωt) - cos(ωt)

(B) y = sin³(ωt)

(C) y = 5 cos(3π/4 - 3ωt)

(D) y = 1 + ωt + ω²t²

Two waves are represented by the equations y₁ = a sin(ωt + kx + 0.57) m and y₂ = a cos(ωt + kx) m, where x is in meter and t in sec. The phase difference between them is

Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air

A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will

Four electric charges +q, +q, -q and -q are placed at the corners of a square of side 2L. The electric potential at point A, midway between the two charges +q and +q, is

A current of 2A flows through a 2Ω resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a 9Ω resistor. The internal resistance of the battery is

The rate of increase of thermo-e.m.f. with temperature at the neutral temperature of a thermocouple

If power dissipated in the 9-Ω resistor in the circuit shown is 36 watt, the potential difference across the 2-Ω resistor is

A uniform electric field and uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron

A current carrying loop in the form of a right angle isosceles triangle ABC is placed in a uniform magnetic field acting along AB. If the magnetic force on the arm BC is F, what is the force on the arm AC?

There are four light-weight-rod samples A, B, C, D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted:

(i) A is feebly repelled

(ii) B is feebly attracted

(iii) C is strongly attracted

(iv) D remains unaffected. Which one of the following is true?

The current i in a coil varies with time as shown in the figure. The variation of induced emf with time would be

In an ac circuit an alternating voltage e = 200√2 sin 100t volts is connected to a capacitor of capacity 1 µF. The r.m.s. value of the current in the circuit is

An ac voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to 3Ω, the phase difference between the applied voltage and the current in the circuit is

The electric and the magnetic field associated with an E.M. wave, propagating along the +z-axis, can be represented by

The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is

Which of the following is not due to total internal reflection?

In the Davisson and Germer experiment, the velocity of electrons emitted from the electron gun can be increased by

A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options best describe the image formed of an object of height 2 cm placed 30 cm from the lens?

Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100kV then the de-Broglie wavelength associated with the electrons would

Photoelectric emmision occurs only when the incident light has more than a certain minimum

The momentum of a photon of energy hv will be

Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be

In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is

The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion. The atomic number Z of hydrogen like ion is

The power obtained in a reactor using U²³⁵ disintegration is 1000 kW. The mass decay of U²³⁵ per hour is

A nucleus of mass M emits a photon of frequency v and the nucleus recoils. The recoil energy will be

Fusion reaction takes place at high temperature because

The halflife of a radioactive isotope 'X' is 50 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio of 1: 15 in a sample of a given rock. The age of the rock was estimated to be

A nucleus ᵐₙX emits one α-particle and two β-particles. The resulting nucleus is

In forward biasing of the p-n junction

If a small amount of antimony is added to germanium crystal

A transistor is operated in common emitter configuration at V_c = 2V such that a change in the base current from 100 µA to 300 µA produces a change in the collector current from 10 mA to 20 mA. The current gain is

Symbolic representation of four logic gates are shown as Pick out which ones are for AND, NAND and NOT gates, respectively

A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is:

The energies E₁ and E₂ of two radiations are 25 eV and 50 eV, respectively. The relation between their wavelengths i.e., λ₁ and λ₂ will be:

If n = 6, the correct sequence for filling of electrons will be:

The total number of atomic orbitals in fourth energy level of an atom is:

Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO₂⁻, NO₃⁻, NH₂⁻, NH₄⁺, SCN⁻?

Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear?

Which of the following has the minimum bond length?

Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be:

By what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?

A gaseous mixture was prepared by taking equal mole of CO and N₂. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N₂) in the mixture is:

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?

Enthalpy change for the reaction, 4H(g) → 2H₂(g) is -869.6 kJ. The dissociation energy of H-H bond is:

If the enthalpy change for the transition of liquid water to steam is 30 kJ mol⁻¹ at 27°C, the entropy change for the process would be:

For the reaction N₂(g) + O₂(g) ⇌ 2NO(g), the equilibrium constant is K₁. The equilibrium constant is K₂ for the reaction 2NO(g) + O₂(g) ⇌ 2NO₂(g). What is K for the reaction NO₂(g) ⇌ 1/2 N₂(g) + O₂(g)?

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

A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of NH₄⁺ is 0.20 M. If the equilibrium constant, K_b for NH₃ equals 1.8 × 10⁻⁵, what is the pH of this solution? (log 2.7 = 0.433).

Which of the following compounds has the lowest melting point?

Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

Name the type of the structure of silicate in which one oxygen atom of [SiO₄]⁴⁻ is shared?

The correct order of increasing bond length of C-H, C-O, C-C and C=C is:

The correct IUPAC name of the compound is:

In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be: (Aqueous tension at 300 K = 15 mm)

The Lassaigne's extract is boiled with conc. HNO₃ while testing for halogens. By doing so it:

Which one of the following is most reactive towards electrophilic reagent?

Which one of the following statement is not true?

The freezing point depression constant for water is -1.86 °C m⁻¹. If 5.00 g Na₂SO₄ is dissolved in 45.0 g H₂O, the freezing point is changed by -3.82 °C. Calculate the van't Hoff factor for Na₂SO₄.

The van't Hoff factor i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively:

Standard electrode potential of three metals X, Y and Z are -1.2 V, +0.5 V and -3.0 V, respectively. The reducing power of these metals will be:

The electrode potentials for

Cu²⁺(aq) + e⁻ → Cu⁺(aq)

and Cu⁺(aq) + e⁻ → Cu(s)

are +0.15 V and +0.50 V, respectively. The value of E° _Cu²⁺/Cu will be:

Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the Cr³⁺/Cr couple is -0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be:

If the E°_cell for a given reaction has a negative value, then which of the following gives the correct relationships for the values of ΔG° and K_eq?

Which one of the following statements for the order of a reaction is incorrect?

If x is amount of adsorbate and m is amount of adsorbent, which of the following relations is not related to adsorption process?

Which of the following elements is present as the impurity to the maximum extent in the pig iron?

Which of the following pairs of metals is purified by van Arkel method?

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of +2 oxidation state will be there in which of the following order?

Acidified K₂Cr₂O₇ solution turns green when Na₂SO₃ is added to it. This is due to the formation of:

The complexes [Co(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆] are the examples of which type of isomerism?

The complex, [Pt(Py)(NH₃)BrCl] will have how many geometrical isomers?

Of the following complex ions, which is diamagnetic in nature?

The d-electron configurations of Cr²⁺, Mn²⁺, Fe²⁺ and Co²⁺ are d⁴, d⁵, d⁶ and d⁷ respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D.

What is the product obtained in the following reaction:

Which one of the following statements is not true regarding (+) Lactose?

Of the following which one is classified as polyester polymer?

Which one of the following is employed as Antihistamine?

The half life of a substance in a certain enzyme-catalysed reaction is 138 s. The time required for the concentration of the substance to fall from 1.28 mg L⁻¹ to 0.04 mg L⁻¹ is:

Mole fraction of the solute in a 1.00 molal aqueous solution is:

Which one of the following animals is correctly matched with its particular named taxonomic category?

In eubacteria, a cellular component that resembles eukaryotic cells is:

Organisms called methanogens are most abundant in a:

Which one of the following organisms is not an example of eukaryotic cells?

Archegoniophore is present in:

The gametophyte is not an independent, free living generation in:

Compared with the gametophytes of the bryophytes the gametophytes of vascular plant are:

Which one of the following have the highest number of species in nature?

What will you look for to identify the sex of the following?

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

Flowers are zygomorphic in:

Which one of the following statements is correct?

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

The correct floral formula of chilli is;

The ovary is half inferior in flowers of

Ground tissue includes

In land plants, the guard cells differ from other epidermal cells in having:

Which one of the following is wrongly matched?

The cork cambium, cork and secondary cortex are collectively called:

The ciliated columnar epithelial cells in humans are known to occur in:

One very special feature in the earthworm Pheretima is that

Which of the following is correctly stated as it happens in the common cockroach?

Important site for formation of glycoproteins and glycolipids is

Peptide synthesis inside a cell takes place in:

What are those structures that appear as beads-on-string in the chromosomes when viewed under electron microscope?

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?

The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration.) What do the two axes (x and y) represent?

Select the correct option with respect to mitosis.

Which one of the following elements in plants is not remobilised?

A prokaryotic autotrophic nitrogen fixing symboint is found in:

Nitrifying bacteria:

The function of leg haemoglobin in the root nodules of legumes is:

CAM helps the plants in:

Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of:

Which one of the following enzymes carries out the initial step in the digestion of milk in humans?

The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?

A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O₂:

Which one of the following plasma proteins is involved in the coagulation of blood?

'Bundle of His' is a part of which one of the following organs in humans?

Arteries are best defined as the vessels which:

Which one of the following statements is correct regarding blood pressure?

Uricotelic mode of passing out nitrogenous wastes is found in

Which one of the following is not a part of a renal pelvis?

Which one of the following correctly explains the function of a specific part of a human nephron?

Which one of the following statements is correct with respect to kidney function regulation?

When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is:

The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of:

The "Eyes" of the potato tuber are

Filiform apparatus is a characteristic feature of

In which one of the following pollination is autogamous?

Wind pollination is common in

A drupe develops in

Nucellar polyembryony is reported in species of

If for some reason, the vasa efferentia in the human reproductive system gets blocked, the gametes will not be transported from

The testes in humans are situated outside the abdominal cavity insides pouch called scrotum. The purpose served is for

The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of I-VI have been correctly identified?

Which one of the following is the most widely accepted method of contraception in India, as at present?

Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy?

When two unrelated individuals or lines are crossed, the performance of F₁ hybrid is often superior to both parents. This phenomenon is called:

A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers blood donation without delay. What would have been the type of blood group of the donor friend?

Which one of the following conditions correctly describes the manner of determining the sex in the given example?

Mutations can be induced with:

Given below is a sample of a portion of DNA strand. What is so special shown in it? 5' -----------GAATTC---------------3'

3' --------------- CTTAAG ------------ 5'

Which one of the following also acts as a catalyst in a bacterial cell?

What was the most significant trend in evolution of modern man (Homo sapiens) from his ancestors?

Where will you look for the sporozoites of the malarial parasite?

Which one of the following is categorised as a parasite in true sense ?

Which one of the following acts as a physiological barrier to the entry of micro-organisms in human body?

At which stage of HIV infection does one usually show symptoms of AIDS?

A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome. Which diagnostic technique will you recommend for its detection?

Jaya and Ratna developed for green revolution in India are the varieties of

Himgiri developed by hybridisation and selection for disease resistance against rust pathogens is a variety of

Ethanol is commercially produced through a particular species of:

Which one of the following help in absorption of phosphorus from soil by plants?

Which one of the following is not a biofertilizer?

There is a restriction endonuclease called EcoRI. What does "co" part in it stand for?

Agarose extracted from sea weeds finds use in:

The most common substrate used in distilleries for the production of ethanol is

The process of RNA interference has been used in the development of plants resistant to

Continuous addition of sugars in 'fed batch' fermentation is done to:

Maximum number of existing transgenic animals is of:

Large woody vines are more commonly found in:

Consider the following four conditions (i) - (iv) and select the correct pair of them as adaptation to environment in desert lizards. (i) Burrowing in soil to escape high temperature (ii) Losing heat rapidly from the body during high temperature (iii) Bask in sun when temperature is low (iv) Insulating body due to thick fatty dermis

Which one of the following statements is correct for secondary succession?

Of the total incident solar radiation the proportion of PAR is:

Mass of living matter at a trophic level in an area at any time is called

Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?

Which one of the following shows maximum genetic diversity in India?

A collection of plants and seeds having diverse alleles of all the genes of a crop is called

Secondary sewage treatment is mainly a

Which of the following is mainly produced by the activity of anaerobic bacteria on sewage?

Eutrophication is often seen in

Which one of the following statements is wrong in case of Bhopal tragedy?

Which one of the following expanded forms of the following acronyms is correct?

Which one of following pairs of gases are the major cause of "Greenhouse effect"?

A drupe develops in :

Given below is an incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C.

Match the source gland with respective hormone as well as the function correctly.

In which one of the following, the genus name, its two characters and its class/phylum are correctly matched?

Which one is a nucleophilic substitution reaction among the following?

In the following reactions,

the major products (A) and (C) are respectively:

What type of human population is represented by the following age pyramid?