Official NEET UG 2009 (C1)

If the dimensions of a physical quantity are given by \(M^a L^b T^c\), then the physical quantity will be :

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is S\(_1\) and that covered in the first 20 seconds is S\(_2\) then :

A bus is moving with a speed of 10ms\(^{–1}\) on a straight road. A scooterist wishes to overtake the bus in 100s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus ?

The mass of lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is :

An explosion blows a rock into three parts Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 ms\(^{–1}\) and 2 kg second part moving with a velocity of 8 ms\(^{–1}\) . If the thirds part files off with a velocity of 4 ms\(^{–1}\) , its mass would be :

A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be :

Two bodies of mass 1 kg and 3 kg have position vectors  \(\hat{i}+ 2\hat{j}+\hat{k}\) and \(-3\hat{i} -2\hat{j}+\hat{k}\), respectively. The centre of mass of this system has a position vector :

Four identical thin rods each of mass M and length \(l\), from a square frame. Moment of inertia of this frame about an axis through the centre of the square and perpendicular to its plane is :

A thin circular ring of mass M and radius R is rotating in a horizontal plane about an axis vertical to its plane with a constant angular velocity \(\omega \), If two objects each mass m be attached gently to the opposite ends of a diameter of the ring, the ring, will then rotate with an angular velocity :

A body, under the action of a force \(\vec{F} = 6 \hat{i}-8\hat{j}+10\hat{k}\) acquires an acceleration of 1 m/s\(^2\) . The mass of this body must be :

If  \(\vec{F}\) is the force acting on a particle having position vector \(\vec{r}\)  and \(\vec{\tau}\) be the torque of this force about the origin, then :

The figure shows elliptical orbit of a planet m about the sun S. The shaded area SCD is twice the shaded are SAB. It t\(_1\) is the time for the planet to move from C to D and t\(_2\) is the time to move from A to B then

An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate which kinetic energy is imparted to water ?

A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momenetarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ?
(g = 10 m/s\(^2\))

The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures T\(_1\) and T\(_2\) (T\(_1\) > T\(_2\) ). The rate of heat transfer,  \(\frac{dQ}{dt}\) through the rod in a steady state is given by :

In thermodynamic processes which of the following statements is not true ?

A black body at 227\(^{o}\)C radiates heat at the rate of 7 cals/cm\(^2\)s. At a temperature of 727\(^o\)C, the rate of heat radiated in the same units will be :

The internal energy change in a system that has absorbed 2 k cal of heat and done 500 J of work is :

The driver of a car traveling with speed 30 m/sec towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 m/s, the frequency of reflected sound as heard by driver is :

A simple pendulum performs simple harmonic  motion about x = 0 with an amplitude a and time period T. The speed of the pendulum at x = a/2 will be :

Which one of the following equations of motion represents simple harmonic motion ?

Where k, k\(_0\), k\(_1\) and a are all positive

The electric field part of an electromagnetic wave in a medium is represented by :

\(E_x = 0\)

\(E_y = 2.5\frac{N}{C}cos[(2\pi\times 10^6 \frac{rad}{m})t – (\pi\times 10^{-2}\frac{rad}{s} )x]\)

\(E_z = 0\) The wave is :

A wave in a string has an amplitude of 2 cm. The wave travels in the +ve direction of x-axis with a speed of 128 m/s and it is noted that 5 complete waves fit in 4 m length of the string. The equation describing the wave is

Each of the two strings of length 51.6 cm and 49.1 cm are tensioned separately by 20 N force. Mass per unit length of both the strings is same and equal to 1 g/m. When both the strings vibrate simultaneously the number of beats is :

Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination will be :

Which one of the following has haplontic life cycle ?

T.O.Diener discovered a :

Mannitol is the stored food in –

Which one of the following is a vascular cryptogram ?

Phylogenetic system of classification is based on:

Which one of the following groups of animals is bilaterally symmetrical and triploblastic ?

Peripatus is a connecting link between :

Which one of the following pairs of animals comprises ‘Jawless fishes’ ?

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is :

Plasmodesmata are :

Stroma in the chloroplast of higher plant contains :

Synapsis occurs between :

Middle lamella is composed mainly of :

Cytoskeleton is made up of :

The cell junctions called tight, adhering and gap junctions are found in :

The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in –

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is :

Given below is a schematic break-up of the phases / stages of cell cycle:

Which one of the following is the correct indication of the stage / phase in the cell cycle ?

What is not true for genetic code?

Removal of introns and joining the exons in a defined order in a transcription unit is called :

Semiconservative replication of DNA was first demonstrated in :

A wire of resistance 12 ohms per metre is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the figure, is :

A bar magnet having a magnetic movement of 2 × 10\(^4\) JT\(^{–1}\) is free to rotate in a horizontal plane. A horizontal magnetic field B = 6 × 10\(^{-4}\) T exists in the space. The work done in taking the magnet slowly from a direction parallel to the field to a direction 60\(^o\) from the field is :

The magnetic force acting on a charged particle of charge – 2\(\mu \)c in a magnetic field of 2T acting in y direction, when the particle velocity is \( (2\hat{i} + 3\hat{j}) \times 10^6 \) ms\(^{-1}\), is :

A conducting circular loop is placed in a uniform magnetic field 0.04T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the redius is 2 cm is :

The electric potential at a point (x, y, z) is given by  V = -x\(^2\)y – xz\(^3\) + 4 The electric field \(\vec{E}\) at that point is :

See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?

A galvanometer having a coil resistance of 60 \(\Omega \) shows full scale deflection when a current of 1.0 amp passes through it. It can be converted into an ammeter to read currents upto 5.0 amp by :

Under the influence of a uniform magnetic field, a charged particle moves with constant speed V in a circle of radius R. The time period of rotation of the particle :

Power dissipated in an LCR series circuit connected to an a.c. source of emf \(ε\) is :

Three concentric spherical shells have radii a, b, and c(a < b < c) and have surface charge densities \(\sigma \), –\(\sigma \) and \(\sigma \) respectively. If V\(_A\), V\(_B\) and V\(_C\) denote the potentials of the three shells, then, for c = a + b, we have :

A student measures the terminal potential difference (V) of a cell (of emf ε and internal) resistance r) as a function of the current (I) flowing through it. The slope and intercept of the graph between V and I, then respectively equal to :

A rectangular, a square, a circular and an elliptical loop, all in the (x – y) plane, are moving out of a uniform magnetic field with a constant velocity,\(\vec{V}=v.\hat{i}\) . The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops, come out of the field region, will not remain constant for :

If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is :

The number of photoelectrons emitted for light of a frequency v (higher than the threshold frequency v\(_0\)) is proportional to :

Monochromatic light of wavelength 667 nm is produced by a helium neon laser. The power emitted is 9 mW. The number of photons arriving per second on the average at a target irradiated by this beam is :

The figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?

The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an :

The ionization energy of the electron in the hydrogen atom in its grounds state is 13.6 eV. The atoms are excited to higher energy levels to emit radiations of 6 wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between :

In a Rutherford scattering experiment when a projectile of charge Z\(_1\) and mass M\(_1\)  approaches a target nucleus of charge Z\(_2\) and mass M\(_2\), the distance of closest approach is r\(_0\). The energy of the projectile is :

In the nuclear decay given below :

The particles emitted in the sequence are :

The mean free path of electrons in a metal is 4 × 10\(^{–8}\) m. The electric field which can give on an average 2 eV energy to an electron in the metal will be in units of V/m :

Sodium has body centred packing. Distance between two nearest atoms is 3.7\(Å\). The lattice parameter is :

A p–n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength :

The symbolic representation of four logic gates are given below

The logic symbols for OR, NOT and NAND gates are respectively :

A transistor is operated in common-emitter configuration at V\(_C\) = 2V such that a change in the base current from 100 \(\mu \)A to 200 \(\mu \)A produces a change in the collector current from 5 mA to 10 mA. The current gain is :

10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be –

Oxidation number of P in  PO\(^{3-}_{4}\) , of S in SO\(^{2-}_{4}\) and that of Cr in  Cr\(_2\)O\(^{2-}{7}\)  are respectively :

Maximum number of electrons in a subshell or an atom is determined by the following :

Which of the following is not permissible arrangement of electrons in an atom ?

The ionization constant of ammonium hydroxide is 1.77×10\(^{–5}\) at 298 K. Hydrolysis constant of ammonium chloride

Given :
(i) Cu\(^{2+} + 2{e–}\) \(\to \) Cu, E\(^o\) = 0.337 V
(i) Cu\(^{2+} + {e–}\) \(\to \)  Cu\(^+ \) E\(^o\) = 0.153 V
Electrode potential E\(^o\) for the reaction,

Cu\(^{+}\)+ e\(^–\) \(\to \) Cu, will be

What is the [OH\(^–\)] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)\(_2\) ? –

The energy absorbed by each molecule (A\(_2\)) of a substance is 4.4 × 10\(^{–19}\) J and bond energy per molecule is 4.0 × 10\(^{–19}\) J. The kinetic energy of the molecule per atom will be :

For the reaction, N\(_2\) + 3H\(_2\) \(\to \) 2NH\(_3\),

If \(\frac{d[NH_3]}{dt}\) = 2 × 10\(^{–4}\) mol L\(^{–1}\)s \(^{–1}\), [] The value of \(\frac{-d[H_2]}{dt}\) would be –

For the reaction A + B \(\to \) products, it is observed that :
(1) On doubling the initial concentration of A only, the rate of reaction is also doubled and
(2) On doubling the initial concentration of both A and B, there is a change by a factor of 8 in the rate of the reaction.
The rate of this reaction is given by :

The equivalent conductance of \(\frac{M}{32}\) solution of a weak monobasic acid is 8.0 mho cm\(^2\) and at infinite dilution is 400 mho cm\(^2\) , The dissociation constant of this acid is –

A 0.0020 M aqueous solution of an ionic compound Co(NH\(_3\))\(_5\) (NO\(_2\))Cl freezes at – 0.00732\(^o\)C. Number of moles of ions which 1 mole of ionic compound produces on being dissolved in water will be : (k\(_f\) = 1.86oC/m) –

In the reation

BrO\(^-_3\) (aq) + 5Br\(^–\)(aq) + 6H\(^+\) \(\to \) 3Br\(_2\)(l) + 3H\(_2\)O(l) The rate of appearance of bromine (Br\(_2\)) is related to rate of disappearance of bromide ions as following

Lithium metal crystallizes in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of lithium will be :

The dissociation constants for acetic acid and HCN at 25\(^o\)C are 1.5 × 10\(^{-5}\) and 4.5 × 10\(^{-10}\), respectively. The equilibrium constant for the equilibrium –

would be:

The values of \(\triangle \)H and \(\triangle \)S for the reaction, C(graphite) + CO\(_2\)(g) → 2CO(g) are 170 kJ and 170 JK\(^{–1}\) respectively. This reaction will be spontaneous at –

Half-life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is :

In which of the following molecules / ions BF\(_3\), NO\(^-_2\) ,  NH\(^-_2\) and H\(_2\)O, the central atom is sp2 hybridized ?

Among the following which is the strongest oxidizing agent ? –

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet” ?

Point mutation involves :

In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of –

Sickel cell anemia is :

Study the pedigree chart given below :

What does it show ?

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having :

Select the incorrect statement from the following :

Cotyledons and testa respectively are edible parts in –

An example of a seed with endosperm, perisperm and caruncle is –

Guard cells help in :

Manganese is required in :

Oxygenic photosynthesis occurs in :

A fruit developed from hypanthodium inflorescence is called :

The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is –

An example of axile placentation is –

In barley stem vascular bundles are –

Aerobic respiratory pathway is appropriately termed :-

Palisade parenchyma is absent in leaves of –

Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :

Cyclic photophosphorylation results in the formation of :

In a standard ECG which one of the following alphabets is the correct represention of the respective activity of the human heart ?

Uric acid is the chief nitrogenous component of the excretory products of –

Which one of the following pairs of food compounds in humans reaches the stomach totally undigested –

Which one of the following is correct pairing of a body part and like kind of muscle tissue that moves it ?

Compared to blood our lymph has :

What will happen if the stretch receptors of the urinary bladder wall are totally removed ?

Which part of human brain is concerned with the regulation of body temperature ?

According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order :

In the case of alkali metals, the covalent character decreases in the order :

Which of the following oxides is not expected to react with sodium hydroxide ?

Al\(_2\)O\(_3\) is reduced by electrolysis at low potentials and high currents. If 4.0 × 10\(_4\) amperes of current is passed through molten Al\(_2\)O\(_3\)  for 6 hours, what mass of aluminium is produced ? (Assume 100% current efficiency, at. mass of Al = 27 g mol\(^{–1}\)) –

The stability of +1 oxidation state increases in the sequence :

Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm ?

What is the dominant intermolecular force or bond that must be overcome in converting liquid CH\(_3\)OH to a gas –

Which of the following complex ions is expected to absorb visible light ?

(At no. Zn = 30, Sc = 21, Ti = 22, Cr = 24)

Out of  TiF\(^{2-}_6\) and CoF\(^{3-}_6\) , Cu\(_2\)Cl\(_2\) and  NiCl\(^{2-}_4\) (Z of Ti = 22, Co = 27, Cu = 29, Ni = 28) the colourless species are : –

Which of the following does not show optical isomerism –

(en = Ethylenediamine)

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states ?

Which of the following molecules acts as a Lewis acid ?

Amongst the element with following electronic configurations, which one of them may have the highest ionization energy ?

The straight chain polymer is formed by –

The IUPAC name of the compound having the formula CH\(\equiv \)C–CH=CH\(_2\) is –

Which of the following compounds will exhibit cis-trans (geometrical) isomerism ?

H\(_2\)COH.CH\(_2\)OH on heating with periodic acid gives :

Benzene reacts with CH[mathjac]\(_3\)Cl in the presence of anhydrous AlCl\(_3\) to form –

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO\(_3\) and conc. H\(_2\)SO\(_4\). In the mixture, nitric acid acts as a/an –

Which of the following reactions is an example of nucleophilic substitution reaction ?

Which one of following is employed as a tranquilizer ?

Structures of some common polymers are given which one is not correctly presented ?

Predict the product :

Propionic acid with Br\(_2\) / P yields a dibromo product, Its structure would be –

Trichloroacetaldehyde, CCl\(_3\)CHO reacts with chlorobenzene in presence of sulphuric acid and produces –

The segment of DNA which acts as the instrument manual for the synthesis of the protein is :

Which of the following hormones contains iodine ?

A young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to ?

Globulins contained in human blood plasma are primarily involved in –

Seminal plasma in humans is rich in :

Given below is a diagrammatic sketch for a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D.

Which one of the following statement is true regarding digestion and absorption of food in humans :

Which one of the following correctly described the location of some body parts in the earthworm Pheretima ?

Elbow joint is an example of :

Which one of the following is considered important in the development of seed habit ?

One of the synthetic auxin is :

Which one of the following acids is a derivative of carotenoids ?

Vegetative propagation in mint occurs by :

Which one of the following plants is monoecios ?

Foetal ejection reflex in human female is induced by

Which of the following is the correct matching of the events occurring during menstrual cycle ?

Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is :

A change in the amount of yolk and its distribution in the egg will effect :

When breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from :

Which one of the following types organisms occupy more than one trophic level in a pond ecosystem ?

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

Montreal protocol aims at :

Chipko movement was launched for the protection of –

The correct sequence of plants in hydrosere is :

A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them : –

Step taken by the Government of India to control air pollution include :

Biochemical Oxygen Demand (BOD) in a river water :

DDT residues are rapidly passed through food chain causing biomagnification because DDT is :

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by :

Somaclones are obtained by : –

Which one is the wrong pairing for the disease and its causal organism ?

Which of the following is not used as a biopesticide ?

Which of the following plant species you would select for the production of bioethanol ?

Which of the following is a symbiotic nitrogen fixer ?

A health disorder that results from the deficiency of thyroxine in adults and characterized by (i) a low metabolic rate (ii) increase in body weight and (iii) tendency to retain water in tissues is :

Which one of the following statement is correct ?

Which of following is a pair of viral diseases ?