NEET-UG 2014 Question Paper

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂(g), each at S.T.P., the moles of HCl(g) formed is equal to:

1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much? (At. wt. Mg = 24; O = 16)

Calculate the energy in joule corresponding to light of wavelength 45 nm: (Planck’s constant h = 6.63 × 10⁻³⁴ Js; speed of light c = 3 × 10⁸ ms⁻¹)

What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, l = 1, m = 0

Which of the following orders of ionic radii is correctly represented?

Which of the following molecules has the maximum dipole moment?

Be²⁺ is isoelectronic with which of the following ions?

Equal masses of H₂, O₂ and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H₂ : O₂ : methane would be:

Which one of the following species has plane triangular shape?

‘Which property of colloidal solution is independent of charge on the colloidal particles:-

For the reversible reaction, N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + heat The equilibrium shifts in forward direction:

For the reaction: X₂O₄(l) → 2XO₂(g)

ΔU = 2.1 kcal, ΔS = 20 cal K⁻¹ at 300 K Calculate ΔG is:

Which of the following salts will give highest pH in water?

For a given exothermic reaction, Kₚ and K′ₚ are the equilibrium constants at temperatures T₁ and T₂ respectively. Assuming that heat of reaction is constant in temperature range between T₁ and T₂, it is readily observed that:

Using the Gibbs energy change, ΔG° = +63.3 kJ, for the following reaction,

Ag₂CO₃(s) ⇌ 2Ag⁺(aq) + CO₃²⁻(aq) The Kₛₚ of Ag₂CO₃(s) in water at 25°C is: (R = 8.314 J K⁻¹ mol⁻¹)

(i) H₂O₂ + O₃ → H₂O + 2O₂

(ii) H₂O₂ + Ag₂O → 2Ag + H₂O + O₂

Role of hydrogen peroxide in the above reactions is respectively:

In the Kjeldahl’s method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralized 10 mL of 1 M H₂SO₄. The percentage of nitrogen in the soil is:

Acidity of diprotic acids in aqueous solutions increases in the order:

Which of the following organic compounds has same hybridization as its combustion product (CO₂)?

Magnetic moment 2.83 BM is given by which of the following ions? (At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28):-

‘Which of the following is not a common component of Photochemical Smog?

Reason of lanthanoid contraction is:

out Of the following 0.10 M aqueous solutions, which one will exhibit the largest freezing point depression?

The pair of compounds that can exist together is:

When 0.1 mol MnO₄²⁻ is oxidised, the quantity of electricity required to completely oxidise MnO₄²⁻ to MnO₄⁻ is:

In acidic medium, H₂O₂ changes Cr₂O₇²⁻ to CrO₅, which has two (–O–O–) bonds. Oxidation state of Cr in CrO₅ is:

The weight of silver (at. wt. = 108) displaced by a quantity of electricity which displaced 5600 mL of O₂ at STP will be:

The reaction of aqueous KMnO₄ with H₂O₂ in acidic conditions gives:

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is:

Which of the following complexes is used as an anti-cancer agent: _________.

Among the sets of reactants which one produces anisole?

Which of the following compounds will undergo racemisation with solution of KOH hydrolysis?

‘Which of the following will not be soluble in sodium hydrogen carbonate?

What products are formed when the following compounds are treated with Br₂ in the presence of FeBr₃?

Identify Z in the sequence of reactions:

In the following reaction, the product (A)

Which one is most reactive towards Nucleophilic addition reaction?

Which of the following will be most stable diazonium salt RN₂⁺ X⁻ ?

Which one of the following is an example of a thermoset- ting polymer?

Which of the following compounds polymer- izes to form the polyester Dacron?

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

Artificial sweetner which is stable under cold conditions only is:

If a is the length of the side of a cube, the distance between the body centred atom and one corner atom in the cube will be

Five kingdom system of classification suggested by RH.‘Whittaker is not based on:

Archaebacteria differ from eubacteria in:

The motile bacteria are able to move by:

‘Which one of the following fungi contains hallucinogens?

Which of the following shows coiled RNA strand and capsomeres?

Viruses have:

‘Which one of the following shows isogamy with non-flagellated gametes?

‘Which one of the following is wrong about Chara?

An alga which can be employed as food for human being is:

‘Which of the following is responsible for peat formation?

Select the Taxon mentioned that represents both marine and fresh water species:

‘Which one of the following living organisms completely lacks a cell wall?

Planaria possesses high capacity of:

A marine cartilaginous fish that can produce electric current is:

An example of edible underground stem is:

‘When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:

Placenta and pericarp are both edible portions in:

An aggregate fruit is one which develops from:

Tracheids differ from other tracheary elements in:

You are given a fairly old piece of dicot stem and dicot root. Which of the following anatomical structures. will you use to distinguish between the two?

Choose the correctly matched pair:

Choose the correctly matched pair:

Which structures perform the function of mitochondria in bacteria ?

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

The osmotic expansion of a cell kept in water is chiefly regulated by:

Match the following and select the correct answer:

Select the option which is not correct with respect to enzyme action:

Which one of the following is a non-reducing carbohydrate?

During which phase(s) of cell cycle, amount of DNA ina cell remains at 4C level if the initial amount is denoted as 2C?

In ‘S’ phase of the cell cycle:

The enzyme recombinase is required at which stage of meiosis:

Deficiency symptoms of nitrogen and potassium are visible first in:

Anoxygenic photosynthesis is characteristic of:

In which one of the following processes CO₂ in not released?

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

A few normal seedlings of tomato were kept in a dark room.After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?

Which one of the following growth regulators is known as “stress hormone’?

The initial step in the digestion of milk in humans is carried out by

Fructose is absorbed into the blood through mucosa cells of intestine by the process called:

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:

Person with blood group AB is considered as universal recipient because he has:

How do parasympathetic neural signals affect the working of the heart?

‘Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

Select the correct matching of the type of the joint with the example in human skeletal system:

Stimulation of a muscle fiber by a motor neuron occurs at:

Injury localized to the hypothalamus would most likely disrupt:

‘Which one of the following statements is not correct?

Identify the hormone with its correct matching of source and function:

Fight-or-flight reactions cause activation of:

Geitonogamy involves:

Male gametopyte with least number of cell is present in

Function of filiform apparatus is to:

Non-albuminous seed is produced in:

The shared terminal duct of the reproductive and urinary system in the human male is:

The main function of mammalian corpus luteum is to produce:

Select the correct option describing gonadotropin activity in a normal pregnant female:

Tubectomy is a method of sterilization in which:

Which of the following is a hormone releasing Intra Uterine Device (IUD)?

Assisted reproductive technology, IVF involves transfer of:

Fruit colour in squash in an example of

In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa. and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is:

A man whose father was colour blind marries a womanwhose father was colour blind and her normal father. Whatpercentage of male children of this couple will be colour blind?

A human female with Turner’s syndrome:

Transformation was discovered by:

Which one of the following is wrongly matched?

Select the correct option:

Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:

Which one of the following are analogous structures?

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

‘Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below?

To obtain virus-fiee healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken:

What gases are produced in anaerobic sludge digesters?

An analysis of chromosomal DNA using the Southern hybridization technique does not use:

Which vector can clone only a small fragment of DNA?

In vitro clonal propagation in plants is characterized

Which of the following statements is correct for the spontaneous adsorption of a gas?

‘Which one of the following statements is correct?

Commonly used vectors for human genome sequencing are:

Pollen tablets are available in the market for:

The first human hormone produced by recombinant DNA technology is:

Match the following and select the correct option:

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks:-

A species facing extremely high risk of extinction in the immediate future is called:

The organization which publishes the Red List of species is:

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thosand of‘migratory birds from Siberia and other-extremely cold northern regions move to:

A location with luxuriant growth of lichens on the trees indicates that the:

A scrubber in the exhaust of a chemical industrial Temoves:-

An example of ex situ conservation is:

The zone of atmosphere in which the ozone layer is pressent is called:

If 20J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?

Plant → Mice →Snake → Peacock

If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are:

A particle is moving such that its position coordinate (x, y) are
(2 m, 3 m) at time t = 0
(6 m, 7 m) at time t = 2 s and
(13 m, 14 m) at time t = 5 s.
Average velocity vector (v̄ₐᵥ) from t = 0 to
t = 5 s is:

A projectile is fired from the surface of the earth with avelocity of 5 ms⁻¹ and angle θ with the horizontal.Another projectile fired from another planet with a velocity of 3 ms⁻¹ at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in ms⁻²) given g = 9.8 m/s²?

The force ‘F’ acting on a particle of mass ‘m’ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8s is:

A system consists of three masses m₁, m₂ and m₃ connected by a string passing over a pulley P. The massm₁ hangs freely and m₂ and m₃ are on a rough horizontal table (coefficient of friction = μ). The pulley is frictionless and of negligible mass. The downward acceleration of mass m₁ is: (Assume m₁ = m₂ = m₃ = m)

A mass m is attached to thin wire and whirled in a vertical circle. The wire is most likely to break when:

A bodyof mass (4m) is lying in x-y planeat rest. It suddenly explodes into three pieces. Two pieces, each of mass (m) move perpendicular to each other with equal speeds (v). The total kinetic energy generated due to explosion is :

A solid cylinder of mass 50 kg and radius 0.5 mis free to rotate about the horizontal axis. A massless string is wound round the cylinder with one end attached to it and the other hanging freely. Tension in the string required to produce an angular acceleration of 2 revolutions s⁻² is:

The ratio of the accelerations for a solid sphere (mass ‘m’ and radius ‘R’) rolling down an incline of: angle ‘0’ without slipping and slipping down the incline without rolling is :

Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by:

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would our earth (mass = 5.98 × 10²⁴ kg)
have to be compressed to be a black hole?

Copper of fixed volume ‘V; is drawn into wire of length */’. When this wire is subjected to a constant force ‘F’, the extension produced in the wi re is ‘Al Which of the

following graphsis a straight line?

A certain number of spherical drops of a liquid of radius 'r coalesce to form a single drop of radius 'R' and volume 'V'. If 'T' is the surface tension of the liquid, then:

Steam at 100°C is passed into 20 g of water at 10°C. When
water acquires a temperature of 80°C, the mass of water
present will be:

[Take specific heat of water = 1 cal g⁻¹ °C⁻¹ and latent heat
of steam = 540 cal g⁻¹]

Certain quantity of water cools from 70°C to 60°C in the first 5 minutes and to 54°C in the next 5 minutes. The temperature of the surroundings is:

A monoatomic gas at a pressure P, having a volume V expands isothermally to a volume 2V and then adiabatically to a volume 16V. The final pressure of the gas is :
(take {5}{3}]

A thermodynamic system undergoes cyclic process ABCDA as shown in fig. The work done by the system in the cycle is :

The mean free path of molecules of a gas, (radius 'r') is inversely proportional to

The oscillation of a body on a smooth horizontal surface is
represented by the equation,

X = A cos(ωt)

where X = displacement at time t

ω = frequency of oscillation

Which one of the following graphs shows correctly the
variation of 'a' with 't' ?

If n₁, n₂ and n₃ are the fundamental frequencies of threesegments into which a string is divided, then the original fundamental frequency n of the string is given by:

The number of possible natural oscillation of air column in a pipe closed at one end of length 85 cm whose frequencies lie below 1250 Hz are: (velocity of sound = 340 ms⁻¹)

A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 km/hour. He finds that traffic has ceased and a car moving ahead of him at 18 km/hour is honking at a frequency of 1392 Hz. If the speed of sound is 343 m/s, the frequency of the honk as heard by him will be:

In a region, the potential is represented byV(x, y, z) = 6x − 8xy − 8y + 6yz, where V is in volts and x, y, z are in metres.
The electric force experienced by a charge of 2 coulomb situated at point (1, 1, 1) is:

A conducting sphere of radius R is given a charge Q. The electric potential and the electric field at the centre of the sphere respectively are:

Two thin dielectric slabs of dielectric constant K₁ and K₂ (K₁ < K₂) are inserted between the plates of a parallel plate capacitor, as shown in the figure. The variation of electric field 'E' between the plates with distance 'd' as measured from plate P is correctly shown by:

Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 volt and the average resistance per km is 0.5 Ω. The power loss in the wires is:

The resistances in the two arms of the meter bridge are 5Ω and RΩ, respectively. When the resistance R is shunted
with an equal resistance, the new balance point is at 1.6l.₁ The resistance 'R' is:

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery used across the potentiometer wire, has an emf0of2.0 V and a negligible internal resistance. The potentiometer wire itself is 4m long, When the resistace R, connected across the given cell, has values of (i) infinity (i) 9.5Ω,

The balancing lengths’, on the potentiometer wire are found to be 3 m and 2.85 m, respectively. The value of internal resistance of the cell is

Two identical long conducting wires AOB and COD are placed at right angle to each other, with one above other such that 'O' is their common point for the two. The wires carry I₁ and I₂ currents respectively. Point 'P' is lying at distance 'd' from 'O' along a direction perpendicular to the plane containing the wires. The magnetic field at the point 'P' will be:

In an ammeter 0.2% of main current passes through galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be:

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment Which configuration has highest net magnetic dipole moment ?

A thin semicircular conducting ring (PQR) of radius ‘r’ is falling with its plane vertical ina horizontal magnetic field B, as shown in figure. The potential difference developed across the ring when its speed is v, is

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are:

The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index, μ, of the prism is

Light with an energy flux of 25 × 10⁴ W m⁻² falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm², the average force exerted on the surface is:

If the focal length of objective lens is increased then magnifying power of:

In the Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is λ is K, (λ being the wave length of light used). The intensity at a point where the path difference is λ/4, will be:

A beam of light of λ = 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between first dark fringes on either side of the central bright fringe is:

If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is

When the energy of the incident radiation is increased by 20%, the kinetic energy of the photoelectrons emitted from a metal surface increased from 0.5 eV to 0.8 eV. The work function of the metal is:

Hydrogen atom in ground state is excited by a monochromatic radiation of λ = 975 Å. Number of spectral lines in the resulting spectrum emitted will be:

The binding energy per nucleon of ⁷₃Li and ⁴₂He nuclei are 5.60 MeV and 7.06 MeV, respectively.

In the nuclear reaction, ⁷₃Li + ¹₁H →⁴₂He + Q the value of energy Q released is:

A radio isotope "X" with a half life 1.4 × 10⁹ years decays to "Y", which is stable. A sample of the rock from a cave was found to contain "X" and "Y" in the ratio 1:7. The age of the rock is:

The given graph represents V–I characteristic for a semiconductor device.

Which of the following statement is correct?

The barrier potential of a p–n junction depends on:

(A) type of semiconductor material

(B) amount of doping

(C) temperature

Which one of the following is correct?

D(+) glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be :

Given below is the representation of the extent of global diversity of invertebrates. What groups the four portion (A-D) represent respectively?