Official NEET UG 2011 (C1)

The cells lining the blood vessels belong to the category of

Consider the following statements (A-D) about organic farming
A. Utilizes genetically modified crops like Bt cotton
B. Uses only naturally produced inputs like compost
C. Does not use pesticides and urea
D. Produces vegetables rich in vitamins and minerals
Which of the above statements are correct?

Select the correct statement with respect to
diseases and immunisation

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because

5. Which one of the following animals may occupy
more than one trophic levels in the same ecosystem
at the same time?

Which one of the following is essential for photolysis of water?

What happens during fertilisation in humans after many sperms reach close to the ovum?

Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as

In mitochondria, protons accumulate in the

The unequivocal proof of DNA as the genetic material came from the studies on a

Whorled simple leaves with reticulate venation are present in

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.

What is common between vegetative reproduction and Apomixis?

Read the following statement having two blanks
(A and B)
“A drug used for (A) patients is obtained
from a species of the organism (B) .”
The one correct option for the two blanks is

Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?

The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone.

Which one of the following pairs is wrongly matched while the remaining three are correct?

Function of companion cells is

Which one of the following is not considered as a part of the endomembrane system?

In Kranz anatomy, the bundle sheath cells have

Sweet potato is homologous to

Ureters act as urinogenital ducts in

Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort ?

Read the following four statements (A-D) about certain mistakes in two of them

(A) The first tranrgenic buffalo Rosie produced milk which was human alpha-lactalbumin enriched
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules
(C) Downstream processing is one of the steps of R-DNA technology
(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host
Which are the two statements having mistakes?

The pathogen Microsporum responsible for ringworm disease in humans belongs to the same Kingdom of organisms as that of

Which one of the following techniques made it possible to genetically engineer living organisms?

“Good ozone” is found in the

Guttation is the result of

Biodiversity of a geographical region represents

At metaphase, chromosomes are attached to the spindle fibres by their

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

Silencing of mRNA has been used in producing tranrgenic plants resistant to

Which one of the following statements is totally wrong about the occurrence of notochord while the other three are correct

The technique called gamete intrafallopian transfer (GIFT) is recommended for those females

Common cold is not cured by antibiotics because it is

Which one of the following options gives the correct matching of a disease with its causative organism and mode of infection

Frogs differ from humans in possessing

Test cross in plants or in Drosophila involves crossing

The logistic population growth is expressed by the equation

Examine the figure given below and select the right option giving all the four parts (a, b, c, d) correctly identified

About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH-surge) normally occurs

In history of bilogy, human genome project led to the development of?

Which one of the following correctly represents the normal adult human dental formula?

The type of muscles present in our

Which one of the following is not an essential mineral element for plants while the remaining three are?

Consider the following four statements whether they are correct or wrong?

(A) The sporophyte in liverworts is more elaborate than that in mosses
(B) Salvinia is heterosporous
(C) The life-cycle in all seed bearing plants is diplontic
(D) In Pinus male and female cones are borne on different trees
The two wrong statements together are

Consider the following four statements (A-D) related to the common from Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F).Statements:(A) One dry land it would die due to lack of O2 if its mouth is forcibly kept closed for a few days.(B) It has four chambered heart.(C) On dry land it turns uricotelic from ureotelic.(D) Its life history is carried out in pond water.
Options

The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristics of two of these animals.

In angiosperms, functional megaspore develops into

Which one of the following aspects is an exclusive characteristic of living things?

Some vascular bundles are described as open because these

Bacillus thuringiensis forms protein crystals which contain insecticidal protein.
This protein :

One of the constituents of the pancreatic juice while poured into the duodenum in humans is

Which one of the following structures in Pheretima is correctly matched with its function?

Both, hydrarch and xerarch successions lead to

The breakdown of detritus into smaller particles by earthworm is a process called

Which one of the following diagrams represnts the placentation in Dianthus?

The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function.

Consider the following statement (A)-(D) each with one or two blanks.
(A) Bears go into (1) during winter to (2) cold weather
(B) A conical age pyramid with a broad base represents (3) human population
(C) A wasp pollinating a fig flower is an example of (4)
(D) An area with high levels of species richness is known as (5)

Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (5) in the statements?

A galvanometer of resistance, G is shunted by a resistance S ohm. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is

A particle covers half of its total distance with speed v1 and the rest half distance with speed v2. Its average speed during the complete journey is

A thermocouple of negligible resistance produces an e.m.f. of 40 \( \mu \)V/°C in the linear range of temperature. A galvanometer of resistance 10 ohm whose sensitivity is 1 \( \mu\)A/div, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be

A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to a mass of 3m moving vertically upward (along the y-axis) with velocity 2v. The final velocity of the combination is

A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite side. If the lens is removed the point where the rays meet will move 5 cm closer to the lens. The focal length of the lens is

The threshold frequency for a photosensitive metal is 3.3 × 1014 Hz. If light of frequency 8.2 × 1014 Hz is incident on this metal, the cut-off voltage for the photoelectric emission is nearly

An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a photosensitive material having work function 2.75 eV. If the stopping potential of the photoelectron is 10 V, then the value of n is

A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The magnitude of the gravitational potential at a point situated at a/2 distance from the centre, will be

The r.m.s. value of potential difference V shown in the figure is

Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is

In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is

A conveyor belt is moving at a constant speed of 2 m/s. A box is gently dropped on it. The coefficient of friction between them is \(\mu\) = 0.5. The distance that the box will move relative to belt before coming to rest on it, taking g = 10 ms \(^{-2}\), is

A mass of diatomic gas ( = 1.4) at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27°C to 927°C. The pressure of the gas in the final state is

Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the center of the ring is :

A zener diode, having breakdown voltage equal to 15 V is used in a voltage regulator circuit shown in figure. The current through the diode is :

Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr’s atomic model?

In the following figure, the diodes which are forward biased are

Two radioactive nuclei P and Q in a given sample decay into a stable nucleus R. At time t = 0, number of P species are 4N \(_0\) and that of Q are N \(_0\). Half-life of P (for conversion to R) is 1 minute whereas that of Q is 2 minutes. Initially there are no nuclei of R present in the sample. When number of nuclei of P and Q are equal the number of nuclei of R present in the sample would be :

Pure Si at 500 K has equal number of electron (n_e) and hole (n_h) concentrations of 1.5 × 10 \(^{16} \)m \(^{–3} \). Doping by indium increases nh to 4.5 × 10 \(^{22} \) m \(^{–3} \). The doped semiconductor is of :

A thin prism of angle 15° made of glass of refractive index \(\mu_1\) = 1.5 is combined with another prism of glass of refractive index \(\mu_2\) = 1.75. The combination of the prisms produces dispersion without deviation. The angle of the second prism should be

Two identical piano wires, kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beats /s when both the wires oscillate together would be

A small mass attached to a string rotates on a frictionless table top as shown. If the tension in the string is increased by pulling the string causing the radius of the circular motion to decrease by a factor of 2, the kinetic energy of the mass will

The electric potential V at any, point (x, y, z), in meters in space is given by V = 4x \(^2\) volt. The electric field at the point (1, 0, 2) in volt/meter, is

Three charges, each +q, are placed at the corners of an isosceles triangle ABC of sides BC and AC, 2a. D and E are the mid points of BC and CA. The work done in taking a charge Q from D to E is

A particle of mass m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R.G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is

A short bar magnet of magnetic moment 0.4 JT\(^{–1}\) is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is

A square loop, carrying a steady current I, is placed in a horizontal plane near a long straight conductor carrying a steady current I1 at a distance d from the conductor as shown in figure. The loop will experience

A projectile is fired at an angle of 45° with the horizontal. Elevation angle of the projectile at its highest point as seen from the point of projection is

A coil has resistances 30 ohm and inductive reactance 20 Ohm at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz is connected across the coil, the current in the coil will be

The density of a material in CGS system of units is 4 g/cm \(^3\). In a system of units in which unit of length is 10 cm and unit of mass is 100 g, the value of density of material will be

Match the composition of substances and select the correct answer using the code given below the lists

Which of the following statements is incorrect?

Which of the statements about “Denaturation” given below are correct?
Statements :
(a) Denaturation of proteins causes loss of secondary and tertiary structures of the protein
(b) Denaturation leads to the conversion of double strand of DNA into single strand
(c) Denaturation affects primary structure which gets distorted

The IUPAC name of the following compound is

Which of the following oxide is amphoteric?

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

A bubble of air is underwater at temperature 15°C and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is 25°C and the pressure is 1.0 bar what will happen to the volume of the bubble?

An organic compound ‘A’ on treatment with NH\(_{3}\) gives ‘B’ which on heating gives ‘C’ when treated presence of KOH produces ethylamine. Compound with Br in the ‘A’ is

Consider the following process

\(\Delta\)H(kJ/mol)

\(\frac{1}{2}A \to B\)                                                                  + 150

\(3B \to 2C + D \)                                                                          – 125

\(E + A \to 2D\)                                                                             + 350

\(For B + D \to E + 2, \Delta H will be\)

A 0.1 molal aqueous solution of a weak acid is 30% ionized. If Kf for water is 1.86°C/m, the freezing point of the solution will be

The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag.

In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains Ag \(^{+} \) and Pb \(^{2+} \) at a concentration is 0.10 M. Aqueous HCl is added to this solution until the Cl \(^{–} \) concentration is 0.10 M. What will the concentration of Ag \(^{+} \) and Pb \(^{2+} \) be at equilibrium? (K \(_{sp} \) for AgCl = 1.8 × 10 \(^{–10} \), K \(_{sp} \) for PbCl_2 = 1.7 × 10 \(^{–5}) \)

Which of the following structures is the most preferred and hence of lowest energy for SO\(_{3}\)?

The unit of rate constant for a zero order reaction is

A solution contains Fe2+, Fe\(^{3+}\) and I\(^{–}\) ions. This solution was treated with iodine at 35°C. E° for Fe\(^{3+}\)/Fe\(^{2+}\) is +0.77 V and E° for I\(_{2}\)/2I– = 0.536 V. The favourable redox reaction is

200 mL of an aqueous solution of a protein contains its 1.26 g. The Osmotic pressure of this
solution at 300 K is found to be 2.57 × 10\( ^{–3}\) bar. The molar mass of protein will be (R = 0.083 L bar mol\( ^{–1} K^{–1}) \)

The rate of the reaction

2N\(_{2}\)O\(_{5} \rightarrow \)4NO\(_{2}\)+ O\(_{2}\)

can be written in three ways

\(\frac{d[N_{2}O_{5}]}{dt}= k[N_{2}O_{5}]\)
\(\frac{d[NO_{2}]}{dt}= k'[N_{2}O_{5}]\)
\(\frac{d[O_{2}]}{dt}= k”[N_{2}O_{5}]\)

The relationship between k and k’ and between
k and k” are

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

Which of the following complex compounds will exhibit highest paramagnetic behaviour?

A solid compound XY has NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y \(^-\)) will be

Which of the following is not a fat soluble vitamin?

Which of the following compounds is most basic?

Which has the maximum number of molecules among the following?

Match the compounds

What is the value of electron gain enthalpy of Na \(^{+} \) if IE \(_{1} \) of Na = 5.1 eV?

Which of the following carbonyls will have the strongest C – O bond?

The order of reactivity of phenyl magnesium :bromide (PhMgBr) with the following compounds

The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description?

According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

Consider the reactions :

\((CH_{3})_{2} CH-CH_{2}Br
\overset{C_{2}H_{5}OH}{\rightarrow}(CH_{3})_{2}CH-CH_{2}OC_{2}H_{5}+HBr\)
\((CH_{3})_{2} CH-CH_{2}Br
\overset{C_{2}H_{5}O^{-}}{\rightarrow}(CH_{3})_{2}CH-CH_{2}OC_{2}H_{5}+HBr^{-}\)

The mechanisms of reactions (i) and (ii) are respectively