NEET-UG 2006 Question Paper

The velocity v of a particle at time t is given by v = at + b / t + c , where a, b and c are constant. The dimensions of a, b and c are respectively

A particle moves along a straight line OX. At a time t (in seconds) the distance x (in metres) of the particle from O is given by x = 40 + 12t − t³.
How long would the particle travel before coming to rest?

Two bodies, A (of mass 1 kg), and B (of mass 3 kg), are dropped from heights of 16 m and 25 m, respectively. The ratio of the time taken by them to reach the ground is

For angles of projection of a projectile (45° − θ) and (45° + θ), the horizontal ranges described by the projectile are in the ratio of

A car runs at a constant speed on a circular track of radius 100 m, taking 62.8 seconds in every circular loop. The average velocity and average speed for each circular loop are respectively,

A 0.5 kg ball moving with speed of 12 m/s strikes a hard wall at an angle of 30° with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for 0.25 seconds, the average force acting on the wall is

The vectors 𝐀⃗ and 𝐁⃗ are such that

|𝐀⃗ + 𝐁⃗| = |𝐀⃗ - 𝐁⃗|

The angle between the two vectors is

A body of mass 3 kg is under a constant force which causes a displacement s in metres in it, given by the relation s = 1 / 3 t², where t is in seconds. Work done by the force in 2 seconds is

300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. Taking g = 10 m/s², work done against friction is

A tube of length L is filled completely with an incompressible liquid of mass M and closed at both the ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity. The force exerted by the liquid at the other end is

The moment of inertia of a uniform circular disc of radius R and mass M about an axis touching the disc at its diameter and normal to the disc is

The Earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the Earth. The escape velocity of a body from this platform is fv, where v is its escape velocity from the surface of the Earth. The value of f is

A black body at 1227°C emits radiations with maximum intensity at a wavelength of 5000Å. If the temperature of the body is increased by 1000°C, the maximum intensity will be observed at

A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as to increase the efficiency by 50% of original efficiency?

When volume of system is increased twice and temperature is decreased half of its initial temperature, then pressure becomes

The molar specific heat at constant pressure of an ideal gas is (7 / 2) R. The ratio of specific heat at constant pressure to that at constant volume is

The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm, the potential energy stored in it is

A rectangular block of mass m and area of cross-section A floats in a liquid of density ρ. If it is given a small vertical displacement from equilibrium it undergoes oscillation with a time period T. Then-

Which one of the following statements is true ?

A transverse wave propagating along x-axis is represented by y(x,t) = 8.0 sin(0.5πx − 4πt − π/4) where x is in metres and t is in seconds. The speed of the wave is

The time of reverberation of a room A is one second. What will be the time (in seconds) of reverberation of a room, having dimensions double of those of room A?

Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s. We expect the following number of beats per second

A square surface of side L metres is in the plane of the paper. A uniform electric field 𝐄⃗ (volt /m), also in the plane of the paper, is limited only to the lower half of the square surface (see figure). The electric flux in SI units associated with the surface is

A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates

In producing chlorine through electrolysis, 100 watt power at 125 V is being consumed. How much chlorine per minute is liberated? E.C.E. of chlorine is 0.367 × 10⁻⁶ kg coulomb.

Kirchhoff's first and second laws for electrical circuits are consequences of

Two cells, having the same e.m.f., are connected in series through an external resistance R. Cells have internal resistances r₁ and r₂ (r₁ > r₂) respectively. When the circuit is closed, the potential difference across the first cell is zero. The value of R is

Power dissipated across the 8Ω resistor in the circuit shown here is 2 watt. The power dissipated in watt units across the 3Ω resistor is

In the circuit shown, if a conducting wire is connected between points A and B, the current in this wire will

Two circular coils 1 and 2 are made from the same wire but the radius of the 1ˢᵗ coil is twice that of the 2ⁿᵈ coil. What potential difference in volts should be applied across them so that the magnetic field at their centres is the same?

When a charged particle moving with velocity 𝐯⃗ is subjected to a magnetic field of induction 𝐁⃗, the force on it is non-zero. This implies that

Curie temperature is the temperature above which

Two coils of self inductances 2 mH and 8 mH are placed so closely together that the effective flux in one coil is completely linked with the other. The mutual inductance between them is

A coil of inductance 31 Ω has a resistance of 8 Ω. It is placed in series with a condenser of capacitative reactance 25 Ω. The combination is connected to an a.c. source of 110 volt. The power factor of the circuit is

The core of a transformer is laminated because

A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produces oscillating frequency f. If L is doubled and C is changed to 4C, the frequency will be

A convex lens and a concave lens, each having same focal length of 25 cm, are put in contact to form a combination of lenses. The power in diopters of the combination is

A microscopic focused on a mark in a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?

In a discharge tube ionization of enclosed gas is produced due to collisions between

When photons of energy hν fall on an aluminium plate (of work function E₀), photoelectrons of maximum kinetic energy K are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be

A photo-cell employs photoelectric effect to convert

The momentum of a photon of energy 1 MeV in kg m/s, will be

Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. According to Bohr's theory, the spectral lines emitted by hydrogen will be

The radius of germanium (Ge) nuclei is measured to be twice the radius of ⁹₄Be. The number of nucleons in Ge are

The binding energy of deuteron is 2.2 MeV and that of ⁴₂He is 28 MeV. If two deuterons are fused to form one ⁴₂He, the energy released is

In a radioactive material the activity at time t₁ is R₁ and at a later time t₂, it is R₂. If the decay constant of the material is λ, then

Which one of the following represents forward bias diode?

A transistor is operated in common emitter configuration at constant collector voltage V_c =1.5V such that a change in the base current from 100 μA to 150 μA produces a change in the collector current from 5 mA to 10 mA. The

current gain (β) is

The given electrical network is equivalent to :

The following figure shows a logic gate circuit with two inputs A and B and the output C. The voltage waveforms of A , B and C are as shown below

The logic circuit gate is

Given : The mass of electron is 9.11 × 10⁻³¹ kg Planck's constant is 6.626 × 10⁻³⁴ Js, the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is

The orientation of an atomic orbital is governed by

Which of the following is not a correct statement?

The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH₃ (1.5 D) is larger than that of NF₃ (0.2 D). This is because

Which of the following is not isostructural with SiCl₄?

Which of the following species has a linear shape?

In which of the following molecules all the bonds are not equal?

The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16

is

Assume each reaction is carried out in an open container. For which reaction will ΔH = ΔE ?

The enthalpy of hydrogenation of cyclohexene is −119.5 kJ mol⁻¹. If resonance energy of benzene is −150.4 kJ mol⁻¹, its enthalpy of hydrogenation would be

The enthalpy and entropy change for the reaction

Br₂(l) + Cl₂(g) → 2BrCl(g)

are 30 kJ mol⁻¹ and 105 JK⁻¹ mol⁻¹ respectively. The temperature at which the reaction will be in equilibrium is

Identify the correct statement for change of Gibbs free energy for a system (ΔG_system) at constant temperature and pressure :

For the reaction

CH₄(g) + 2O₂(g) ⇌ CO₂(g) + 2H₂O(l), ΔrH = −170.8 kJ mol⁻¹
Which of the following statements is not true ?

The hydrogen ion concentration of a 10⁻⁸ M HCl aqueous solution at 298 K (K_w = 10⁻¹⁴) is

Which of the following pairs constitutes a buffer?

The sequence of ionic mobility in aqueous solution is :

Al₂O₃ can be converted to anhydrous AlCl₃ by heating

The general molecular formula, which represents the homologous series of alkanols is

The correct order regarding the electrone-gativity of hybrid orbitals of carbon is

CsBr crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being 6.02 × 10²³ mol⁻¹, the density of CsBr is

The appearance of colour in solid alkali metal halides is generally due to

A solution of acetone in ethanol

The thalloid body of a slime mould (Myxomycetes) is known as

What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?

Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?
(i) Temperature of about 25°C
(ii) Temperature of about 5°C

(iii) Relative humidity of about 5%

(iv) Relative humidity of about 95%

(v) A shady place

(vi) A brightly illuminated place

Choose the answer from the following options:

The causative agent of mad-cow disease is a

Peat Moss is used as a packing material for sending flowers and live plants to distant places because

Conifers differ from grasses in the

Two common characters found in centipede, cockroach and crab are

Biradial symmetry and lack of cnidoblasts are the characteristics of

Metameric segmentation is the characteristic of

Which one of the following is a matching set of a phylum and its three examples?

In which one of the following sets of animals do all the four give birth to young ones?

Annual migration does not occur in the case of

What type of placentation is seen in sweet pea?

Long filamentous threads protruding at the end of the young cob of maize are

In a cereal grain the single cotyledon of embryo is represented by

Pineapple fruit develops from

Aril represents the edible part of

A common structural feature of vessel elements and sieve tube elements are

Areolar connective tissue joins

Mast cells secrete

A major break through in the studies of cells came with the development of electron microscope. This is because

Which of the following statements regarding cilia is not correct?

Which of the following statement regarding mitochondrial membrane is not correct?

β-form DNA is approximately

An organic substance bound to an enzyme and essential for its activity is called

What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergies?

The translocation of organic solutes in sieve tube members is supported by

Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

In photosystem-I the first electron acceptor is

During photorespiration, the oxygen consuming reaction(s) occur in

The bacterium Clostridium botulinum that causes botulism is

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO₂ and H₂O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?

An enzyme that can stimulate germination of barley seeds is

How does pruning help in making the hedge dense?

Treatment of seed at low temperature under moist condition to break its dormancy is called

Which one of the following statements is incorrect?

The majority of carbon dioxide produced by our body cells is transported to the lungs

Which of the following has an open circulatory system?

Examination of blood of a person suspected of having anaemia, shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following is likely to alleviate his symptoms?

Match List I with List II.
Choose the correct answer from the options given below:

Which one of the following options gives the correct categorization of six animals according to the type of nitrogenous wastes (A, B, C) they give out?

Figure shown human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their functions.

Angiotensin is a protein produced and secreted by

Which of the following is the contractile protein of a muscle?

Bowman's capsule found in

Which one of the following statement is correct?

Sertoli cells are regulated by the pituitary hormone known as

Which of the following is an accumulation and release centre of neurohormones?

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

A steroid hormone which regulates glucose metabolism is

Which one of the following is not a second messenger in hormone action?

Which one of the following does not act as a neurotransmitter?

The arrangement of the nuclei in a normal embryo sac in the dicot plants is

What would be the number of chromosomes in the cells of the aleuron layer in a plant species with 8 chromosomes in its synergids?

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Which one of the following is an example of polygenic inheritance?

In Mendel's experiment with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRYY × rryy?

Test cross involves

Phenotype of an organism is the result of

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

In which mode of inheritance do you expect more maternal influence among the offspring?

If a colour blind woman marries a normal visioned man, their children will be

Cri-du-chat syndrome in humans is caused by the

Both sickle cell anaemia and Huntington's chorea are

Sickle cell anaemia has not been eliminated from the African population because

Which antibiotic inhibits interaction between tRNA and mRNA during bacterial protein synthesis?

One gene-one enzyme hypothesis was postulated by

Which one of the following amino-acid was not found to be synthesized in Miller's experiment?

Evolutionary history of an organism is known as

An important evidence in favour of organic evolution is the occurrence of

Jurassic period of the Mesozoic era was characterised by

Which one of the following is not a living fossil?

The 'blue baby' syndrome results from

Antibodies in our body are complex

The cell in the human body invaded by the human immuno-deficiency virus (HIV) is

A person showing unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflict with others is suffering from

Which one of the following is the most suitable medium for culture of Drosophila melanogaster?

In maize, hybrid vigour is exploited by

Crop plants grown in monoculture are

Triticale, the first man-made cereal crop, has been obtained by crossing wheat with

Curing of tea leaves is brought about by the activity of

Parthenocarpic tomato fruits can be produced by

In order to obtain virus-free plants through tissue culture the best method is

Two microbes found to be very useful in genetic engineering are

Golden rice is a transgenic crop of the future with the following improved trait:

People living at sea level have around 5 million RBC per cubic mm of blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude

Niche overlap indicates

The formula for exponential population growth is

Praying mantis is a good example of

The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called:

Vertical distribution of different species occupying different levels in a biotic community is known as:

The greatest biomass of autotrophs in the oceans is that of

Which one of the following is not a function of an ecosystem?

Which one of the following is not used for construction of ecological pyramids?

Which one of the following is the correct matched pair of an endangered animal and National Park?

Which of the following pairs of an animal and a plant represents endangered organisms in India?

Which one of the following is not included under in-situ conservation?

Which of the following is considered a hotspot of biodiversity in India?

Photochemical smog pollution does not contain

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is

During osmosis, flow of water through a semipermeable membrane is

A solution containing g 10 g dm⁻³ of urea (molecular mass = 60g mol⁻¹) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1.00 g of a non-electrolyte (molar mass = 250 g mol⁻¹) was dissolved in 51.2 g of benzene. If freezing point depression constant, K_f of benzene is 5.12 K kg mol⁻¹, the freezing point of benzene will be lowered by

If E°_Fe²⁺ / Fe = −0.441 V and E°_Fe³⁺ / Fe²⁺ = +0.771 V, the standard EMF of the reaction Fe + 2Fe³⁺ → 3Fe²⁺ will be

A hypothetical electrochemical cell is shown below

A | A⁺ (xM) || B⁺ (yM) | B
The emf measured is +0.20 V. The cell reaction is

For the reaction 2A + B → 3C + D

which of the following does not express the reaction rate?

Consider the reaction
N₂ (g) + 3H₂ (g) → 2NH₃ (g)
The equality relationship between d[NH₃] / dt and (- d[H₂] / dt) is

For adsorption of a gas on a solid, the plot of log(x / m) vs log p is linear with slope equal to (n being whole number)

Which of the following is the most basic oxide?

In which of the following pairs are both the ions coloured in aqueous solutions?

(At. no.: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

Copper sulphate dissolves in excess of KCN to give

The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids, is

[Co(NH₃)₄(NO₂)₂] Cl exhibits

[Cr(H₂O)₆]Cl₃ (at no. of Cr = 24) has a magnetic moment of 3.83 B.M. The correct distribution of 3d electrons in the chromium of the complex is

Which of the following is not chiral ?

Ethylene oxide when treated with Grignard reagent yields

The major organic product in the reaction,

CH₃—O—CH(CH₃)₂ + HI → Product is

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is

Nucleophilic addition reaction will be most favoured in

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields

In a set of reactions propionic acid yielded a compound D.

The structure of D would b

Which of the following is more basic than aniline?

During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process

Which one of the following is a peptide hormone ?

The human body does not produce

Antibodies in our body are complex