NEET 2019 — Code S2

From evolutionary point of view retention of the female gametophyte with developing young embryo on the parent sporophyte for some time is first observed in

Extrusion of second polar body from egg nucleus occurs:

DNA precipitation out of a mixture of biomolecules can be achieved by treatment with :

Due to increasing air borne allergens and pollutants many people in urban areas are suffering from respiratory disorder causing wheezing due to:

The Earth Summit held in Rio de Janeiro in 1992 was called: 16 SPACE FOR ROUGH WORK

How does steroid hormone influence the cellular activities?

Expressed Sequence Tags (ESTs) refers to:

It takes very long time for pineapple plants to produces flowers. Which combination of hormones can be applied to artificially induces flowering in pineapple plate throughout the year to increase yield

Which of the following ecological pyramids is generally inverted?

Which of the following pairs of organelles does not contain DNA?

The candidates will write the Correct Test Booklet Code as given in the Test Booklet / Answer Sheet in the Attendance Sheet. 1 TIME : 3 HRS DATE : 05-5-2019 NEET (UG) – 2019 SET- R3 SPACE FOR ROUGH WORK 1. The displacement of a particle executing simple harmonic motion is given by y = 𝐴0 + A sinwt + B coswt Then the amplitude of its oscillation is given by :

Persistent nucellus in the seed is known as :

Pinus seed cannot germinate and establish without fungal association. This is because:

Cells in G0 Phase:

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:

Consider the following statement: (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. (B)A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the correct option.

Respiratory Quotient (RQ) value of tripalmitin is:

Which of the following statements is incorrect?

Phloem in gymnosperms lacks:

identify the cells whose secretion protects the lining of gastro -intestinal tract from various enzymes.

What is the site of perception of photoperiod necessary for induction of flowering in plants?

What would be the heart rate of a person if the cardiac output is 5L blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

Placentation in which ovules develop on the inner well of the ovary of in peripheral part is:

Which of these following methods is the most suitable for disposal of nuclear waste?

Which of the following statements is incorrect?

Which one of the following equipment is essentially required for growing increase on a large scale for industrial production of enamels?

Select the incorrect statement.

which of the following immune responses is responsible for rejection of Kidney graft?

Which of the statements given below is not true about formation of Annual Rings in trees ?

Which of the following is true for Golden rice?

What is the genetic disorder in which an individual has an overall masculine development. Gynaecomastia and is sterile?

Which one of the following statements regarding post fertilization development in flowering plants is incorrect?

Which of the following is the most important cause for animals and plants being driven to extinction?

Which of the following contraceptive methods to involve a role of hormone?

Consider following features: (a) Organ system level of organisation (b) Bilateral symmetry (c) True coelomates with segmentation of body Select the correct option of animal groups which posses all the above characteristics.

Which of the following factors is responsible for the formation of concentrated urine

Xylem translocates:

What is the direction of movement of sugars in phloem?

The correct sequence of phases of cell cycle is:

The shorter and longer arms of a submetacentric chromosome are referred to as:

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

Which of the following glucose transporters is insulin – dependent?

Purines found both in DNA and RNA are:

Drug called ‘Heroin’ is synthesized by:

Select the correct option

A gene locus has two alleles A. a if the frequency of dominant allele A is 0.4. then what will be the frequency homozygous dominant, heterozygous and homozygous recessive individuals in the population?

Which of the following statements regarding mitochondria is incorrect?

Variations caused by mutation, as proposed by Hugo de Vries, are

Following statements describe the characteristies of the enzyme Restriction Endonuclease. Identify the incorrect statement.

Which part of the brain is responsible for thermoregulation?

use of an artificial kidney during hemotiayis may result in:

What triggers activation of protoxin to active Bt Toxin of Bacillus Thuringowa’s in boll worm?

Which of the following protocols did aim for reducing emission of chlorofluorocarbouns into the atmosphere ?

which of the following sexually transmit diseases is not completely curable?

Thiobacillus is a group of bacteria helpful in carrying out :

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights form 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

Watch the column-I with column-II Column-I Column-II (a) P-wave (i) Depolarisation of ventricles (b) QRS complex (ii) Repolarisution of ventricles (c) T-wave (iii) Coronary ischemia (d) Reduction I the (iv) Depolarisation size of T-wave of atria (v) Repolarisation of atria Select the correct option. (a) (b) (c) (d)

In some plants, the female gamete develops into is known as:

Which of the following is a commercial blood cholesterol lowering agent?

Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DN Technology ?

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in:

Conversion of glucoses to glucose – 6 - phosphate, the first irrev ersible reaction of glycolysis is catalyzed by:

Which one of the following is not a method of is situ conservation of biodiversity?

The concept of “ Omnis cellula – e cellula ” regrading cell division was first proposed by:

Select the correct group of biocontrol agents

Select the incorrect statement

Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth?

What is the fate of the male gemetes discharged in the synergid?

What map unit (Centimorgan) is adopted in the construction of genetic maps?

Select the hormone -releasing Intra -Uterine Devices.

Select the correctly written scientific name of mango which was first described by Carolus Linnaeus:

Which of the following pairs of gases is mainly responsible for green house effect?

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by:

Which of the following statements is correct?

Which of the following muscular disorders is inherited?

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:

Average velocity of a particle executing SHM in one simple vibration is :

A particle moving with velocity 𝑣⃗ is acted by three force shown by the vector triangle PQR. The velocity of the particle will :

Ionized hydrogen atoms and α-particles with same momenta enters perpendicular to a constant magnetic field B. the ratio of their radii of their paths rH : rα will be

Body A of mass 4 m moving with speed u collides with another body B of mass 2m, at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is:

The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t north is given by

In the circuits shown below, the readings of the voltmeters and the ammeters will be:

A 800 turns rod of effective area 0.05 m 2 is kept perpendicular to a magnetic field 5 × 10−5 T. When the plane of the coil is rotated at 90° around any of its coplanar axis is 0.1 s. The emf induced in the coil will be:

At a point A on the earth’s surface the angle of dip, 𝛿=+25°. At a point B on the earth’s surface the angle of dip, 𝛿= −25°. We can interpret that:

An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, (nearly) : (me = 9 × 10−31 Kg)

The displacement of a particle executing simple harmonic motion is given by y = 𝐴0 + A sinwt + B coswt Then the amplitude of its oscillation is given by :

A hollow metal sphere of radius R is u niformly charged. The electric field due to the sphere at a distance r from the centre x1 v 60° = θ1 x2 v 30° = θ2 V1 V2 h = R m 4 SPACE FOR ROUGH WORK

In an ex periment the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. Then the maximum percentage of error in the measurement X, where X = 𝐴2𝐵1/2 𝐶1/3𝐷3 will be:

A force 𝐹=20+10𝑦 acts on a particle in y- direction where F is in newton and y in meter. Work done by this force to move the particle from 𝑦=0 to 𝑦=1 𝑚 is:

In which of the following process heat is neither absorbed nor released by a system?

In which of the following device the eddy current effect is not used?

The unit of thermal conductivity is :

A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the center of the earth?

Two parallel infinite line charge with linear charge densities +λ C/m and −λ C/m are placed at a distance of 2R in free space. What is the electric field midway between the two line charge?

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

The correct Boolean operation represented by the circuit diagram drawn is:

A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1m. The coefficient of friction between the b lock and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary whose the cylinder is vertical and rotating about its axis, will be (g = 10 m/s2)

A small hole of area of cross -section 2𝑚𝑚2 is present near the bottom of a fully filled open tank of height 2 m. Taking 𝑔=10 𝑚/𝑠2, the rate of flow of water through the open hole would be nearly:

A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field. B with the distance d from the centre of the conductor, is correctly represented by figure.

A soap bubble having radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5 × 10−2 N/m. The pressure inside the bubble equals at a point Z 0 below the free surface of water in a container. Taking g = 10 m/s 2 density of water = 103 kg/m3, the value of Z0 is :

The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth is:

Which of the following acts as a circuit protection device?

Two particles A and B are moving in uniform circular motion in concentric circles of radii r A and r B with equal speed v A and v B respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be :

A parallel plate capacitor of capacitance 20 μF is being charged by a voltage source whose potential is changing at the rate of 3 V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively:

For p-type semiconductor, which of the following statements is true?

Six similar bulbs are connected as shown in the figure with a DC source of emf E and zero internal resistance. The rate of power consumption by the bulbs when (i) all are gl owing and (ii) in the situation when two from section A and one from section B are glowing will be :

Increase in temperature of a gas filled in a container would lead to :

The total energy of an electron in an atom in an orbit is – 3.4 eV. Its kinetic and potential energies are, respectively :

Which colour of the light has the longest wavelength?

In total internal reflection, when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be the angle of refraction?

When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (𝐿+𝑙). The elastic potential energy stored in the extended wire is:

Two point charge A and B, having charges +𝑄 and −𝑄 respectively is placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B then force between the charges becomes:

Pick the wrong answer in the context with rainbow,

A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is ( 𝑎𝐶𝑢= 1.7 × 10—5 𝐾—1 and 𝑎𝐴𝑙= 2.2 × 10—5 𝐾—1)

In which case change in entropy is negative?

For the chemical reactiona N2(g) + 3H2(g) ⇌ 2NH3(g) The correct option is

Which of the following diatomic molecular species has only π bonds according to Molecular Orbital Theory?

Which of the following is incorrect statement?

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is: [Given that 1 L bar = 100 J]

The compound that is most difficult to protonate is:

Which of the following is an amphoteric hydroxide?

The correct structure of tribromooctaoxide is: 14 SPACE FOR ROUGH WORK

The biodegradable polymer is:

Among the following, the reaction that proceeds through an electrophilic substitution, is

The number of sigma ( σ) and pi ( π) bonds in pent-2-en-4-yne is:

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor M is:

Identify the incorrect statement related to PCl 5 from the following:

If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:

The most suitable reagent for the following conversion is:

The manganate and permanganate ions are tetrahedral due to

For a cell involving one electron 𝐸cell ⊖ =0.59 V at 298 K, the equilibrium constant for the cell reaction is: [Given that 2.303 RT F =0.059 V at T=298 K]

pH of a saturated solution of Ca (𝑂𝐻)2 is 9. The solubility product (𝐾𝑠𝑝) of 𝐶𝑎(𝑂𝐻)2 is:

For an ideal solution, the correct option is

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is:

The correct order of the basic strength of methyl substituted amines in aqueous solution is:

For the second period elements the correct increasing order of first ionisation enthalpy is:

Which mixture of the solutions will lead to the formation of negatively charged colloidal [AgI]I− sol.?

For the cell reaction 2𝐹𝑒3+(𝑎𝑞)+2𝐼−(𝑎𝑞)→2𝐹𝑒2(𝑎𝑞)+𝐼2(𝑎𝑞) 𝐸𝑐𝑒𝑙𝑙 ⊖ =0.24 𝑉 at 298 K. The standard Gibbs energy (Δ𝑟 °𝐺⊖) of the cell reaction is:

Which is the correct thermal stability order for 𝐻2𝐸 (E = O, S, Se, Te and Po)

Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is:

The non -essential amino acid among the following is:

An alkene “A” on reaction with 𝑂3 and Zn – 𝐻2𝑂 gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is:

Which of the following species is not stable?

The structure of intermediate A in the following reaction is:

The mixture that forms maximum boiling azeotrope is:

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory

Which will make basic buffer?

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:

Among the following, the narrow spectrum antibiotic is:

The major product of the following reaction is:

The method used to remove temporary hardness of water is:

Which one is malachite from the following?