NEET 2016 Question Paper - Phase-I Code B Q X - Mock Test

The addition of a catalyst during a chemical reaction alters which of the following quantities?

Predict the correct order among the following:

The correct statement regarding the basicity of aryl amines is:

When copper is heated with concentrated ${\text{HNO}}_3$ it produces:

For the following reactions:

Which of the following statements is correct?

Two electrons occupying the same orbital are distinguished by:

The reaction between to form an ether can be classified as:

The electronic configurations of $\text{Eu}$ (Atomic no. $63$), $\text{Gd}$ (Atomic no. $64$) and $\text{Tb}$ (Atomic no. $65$) are:

At $100^{\circ }\text{C}$ the vapour pressure of a solution of $6.5\text{g}$ of a solute in $100\text{g}$ water is $732\text{mm}$. If $K_b=0.52$, the boiling point of this solution will be:

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is:

Which one of the following characteristics is associated with adsorption?

Match the compounds given in column I with the hybridization and shape given in

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha carbon, is:

In a protein molecule various amino acids are linked together by:

Match items of column I with the items of Column II

Which of the following is an analgesic?

Which is the correct statement for the given acids?

The pair of electron in the given carbanion, ${\text{CH}}_3\text{C}\equiv {\text{C}}^{\ominus }$ is present in which of the following orbitals?

Consider the molecules ${\text{CH}}_4,{\text{NH}}_3$ and ${\text{H}}_2\text{O}$. Which of the given statements is false?

Which one of the following statements is correct when ${\text{SO}}_2$ is passed through acidified ${\text{K}}_2{\text{Cr}}_2{\text{O}}_7$ solution?

The correct thermodynamic conditions for the spontaneous reaction at all temperatures is:

Natural rubber has:

In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?

The product obtained as a result of a reaction of nitrogen with ${\text{CaC}}_2$ is:

Fog is a colloidal solution of:

Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escape in the time required for one-half of the hydrogen to escape?

Lithium has a $bcc$ structure. Its density is $530{\text{kg/m}}^3$ and its atomic mass is $6.94\text{g/mol}$. Calculated the edge length of a unit cell of Lithium metal ($N_A=6.02\times 10^{23}{\text{mol}}^{-1}$):

Which of the following statements about the composition of the vapour over an ideal $1:1$ molar mixture of benzene and toluene is correct? Assume that the temperature is constant at $25^{\circ }\text{C}$. (Given vapour pressure data at $25^{\circ }\text{C}$: benzene $=12.8\text{kPa}$, toluene $=3.85\text{kPa}$)

Which of the following has longest $\text{C}-\text{O}$ bond length? (Free $\text{C}-\text{O}$ bond length in $\text{CO}$ is $1.128\text{A˚}$).

Among the following, the correct order of acidity is:

In the reaction:

are:

$\text{MY}$ and ${\text{NY}}_3$, two nearly insoluble salts, have the same $K_{sp}$ values of $6.2\times 10^{-13}$ at room temperature. Which statement would be true in regard to $\text{MY}$ and ${\text{NY}}_3$?

Consider the nitration of benzene using mixed concentrated ${\text{H}}_2{\text{SO}}_4$ and ${\text{HNO}}_3$. If a large amount of ${\text{KHSO}}_4$ is added to the mixture, the rate of nitration will be:

The product formed by the reaction of an aldehyde with a primary amine is:

The pressure of ${\text{H}}_2$ required to make the potential of ${\text{H}}_2$ – electrode zero in pure water at $298\text{K}$ is:

The correct statement regarding RNA and DNA, respectively is:

Which one given below is a non-reducing sugar?

Which of the following statements about hydrogen is incorrect?

Consider the following liquid – vapour equilibrium: $\text{Liquid}\rightleftharpoons \text{Vapour}$. Which of the following relations is correct?

Which of the following biphenyls is optically active?

Which of the following statements is false?

The ionic radii of ${\text{A}}^{\oplus }$ and ${\text{B}}^{\ominus }$ ions are $0.98\times 10^{-10}\text{m}$ and $1.81\times 10^{-10}\text{m}$. The coordination number of each ion in $\text{AB}$ is:

The rate of a first-order reaction is $0.04{\text{mol L}}^{-1}{\text{s}}^{-1}$ at $10\text{seconds}$ and $0.03{\text{mol L}}^{-1}{\text{s}}^{-1}$ at $20\text{seconds}$ after initiation of the reaction. The half-life period of the reaction is:

The two polypeptides of human insulin are linked together by:

The coconut water from tender coconut represents:

Which of the following is not a feature of the plasmids?

Which is the National Aquatic Animal of India?

The avena curvature is used for bioassay of:

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

Which of the following approaches does not give the defined action of contraceptive?

In a testcross involving $F_1$ dihybrid flies, more parental – type offspring were produced than the recombinant – type offspring. This indicates:

A typical fat molecule is made up of:

Match the terms in column I with their description in Column II:
Column I: (a) Dominance, (b) Codominance, (c) Pleiotropy, (d) Polygenic inheritance
Column II: (i) Many genes govern a single character, (ii) In a heterozygous organism only one allele expresses itself, (iii) In a heterozygous organism both alleles express themselves fully, (iv) A single gene influences many characters

Which of the following statements is not correct?

Which of the following features is not present in Periplaneta americana?

Water soluble pigments found in plant cell vacuoles are:

A cell at telophase stage is observed by a student. There is no formation of cell plate and thus the cell contains more number of chromosomes as compared to other dividing cells. This would result in:

A plant avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. To which physiological group does this plant belong?

In higher vertebrates, the immune system can distinguish self – cells and non – self. If this property is lost due to genetic abnormality and it attacks self – cells, then it leads to:

Emerson’s enhancement effect and Red drop have been instrumental in the discovery of:

Select the correct statement:

Which of the following is not a characteristic feature during mitosis in somatic cells?

Blood pressure in the pulmonary artery is:

Which of the following structures is homologous to the wing of a bird?

Seed formation without fertilization in flowering plants involves the process of:

Name the chronic respiratory disorder caused mainly by cigarette smoking:

Spindle fibres attach on to:

In context of Amniocentesis, which of the following statements is incorrect?

Stems modified into flat green organs performing the functions of leaves are known as:

In a chloroplast the highest number of protons are found in:

Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?

In meiosis crossing over is initiated at:

Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain:

The Taq polymerase enzyme is obtained from:

Which of the following most appropriately describes haemophilia?

The standard petal of papilionaceous corolla is also called:

Which part of the tobacco plant is infected by Meloidogyne incognita?

Which of the following statements is wrong for viroids?

Which of the following statements is not true for cancer cells in relation to mutations?

Which type of tissue correctly matches with its location?

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

Specialized epidermal cells surrounding the guard cells are called:

Fertilization in humans is practically feasible only if:

Which one of the following is the starter codon?

A river with an inflow of domestic sewage rich in organic waste may result in:

Following are the two statements regarding the origin of life:(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements, which one of the following options is correct?

A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called:

Gause's principle of competitive exclusion states that:

Which of the following characteristic features always holds true for the corresponding group of animals?

Changes in GnRH pulse frequency in females is controlled by circulating levels of:

Microtubules are the constituents of:

Mitochondria and chloroplast are:(i) Semi – autonomous organelles(ii) Formed by division of pre – existing organelles and they contain DNA but lack protein synthesizing machineryWhich one of the following options is correct?

Photosensitive compound in human eye is made up of:

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom:

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the:

Identify the correct statement on ‘inhibin’:

It is much easier for a small animal to run uphill than for a large animal, because:

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the $F_1$ plants were selfed the resulting genotypes were in the ratio of:

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers:

Which one of the following is a characteristic feature of cropland ecosystem?

Tricarpellary, syncarpous gynoecium is found in flowers of:

In which of the following, all three are macronutrients?

Reduction in pH of blood will:

Lack of relaxation between successive stimuli in sustained muscle contraction is known as:

Which one of the following statements is wrong?

Which of the following is a restriction endonuclease?

Which of the following would appear as the pioneer organisms on bare rocks?

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options:

Cotyledon of maize grain is called:

Which of the following guards the opening of hepatopancreatic duct into the duodenum?

In the stomach, gastric acid is secreted by the:

In mammals, which blood vessel would normally carry largest amount of urea?

The term ecosystem was coined by:

Which of the following is required as inducer(s) for the expression of Lac operon?

Which of the following is wrongly matched in the given table?

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as $dN/dt=rN(1-N/K)$:

Which one of the following statements is not true?

In bryophytes and pteridophytes, transport of male gametes requires:

Which of the following is not a stem modification?

Which one of the following cell organelles is enclosed by a single membrane?

Analogous structures are a result of:

Which one of the following statements is wrong?

Proximal end of the filament of stamen is attached to the:

Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

Which one of the following characteristics is not shared by birds and mammals?

Select the incorrect statement:

The amino acid Tryptophan is the precursor for the synthesis of:

Joint Forest Management Concept was introduced in India during:

One of the major components of cell wall of most fungi is:

A complex of ribosomes attached to single strand of RNA is known as:

Which of the following features is not present in the Phylum – Arthropoda?

Asthma may be attributed to:

Pick out the correct statements:(i) Haemophilia is a sex – linked recessive disease(ii) Down’s syndrome is due to aneuploidy(iii) Phenylketonuria is an autosomal recessive gene disorder(iv) Sickle cell anaemia is an autosomal recessive gene disorder

A capacitor of $2\mu \text{F}$ is charged as shown in the diagram. When the switch $S$ is turned to position 2, the percentage of its stored energy dissipated is:

To get output 1 for the following circuit, the correct choice for the input is:

A potentiometer wire is $100\text{cm}$ long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at $50\text{cm}$ and $10\text{cm}$ from the positive end of the wire in the two cases. The ratio of emf’s is:

When a metallic surface is illuminated with radiation of wavelength $\lambda$, the stopping potential is $V$. If the same surface is illuminated with radiation of wavelength $2\lambda$, the stopping potential is $V/4$. The threshold wavelength for the metallic surface is:

Two non-mixing liquids of densities $\rho$ and $n\rho (n>1)$ are put in a container. The height of each liquid is $h$. A solid cylinder of length $L$ and density $d$ is put in this container. The cylinder floats with its axis vertical and length $pL(p<1)$ in the denser liquid. The density $d$ is equal to:

Out of the following options which one can be used to produce a propagating electromagnetic wave?

The charge flowing through a resistance $R$ varies with time $t$ as $Q=at-b{t}^2$ where $a$ and $b$ are positive constants. The total heat produced in $R$ is:

At what height from the surface of earth the gravitation potential and the value of $g$ are $-5.4\times 10^7\text{J/kg}$ and $6.0{\text{m/s}}^2$ respectively? Take the radius of earth as $6400\text{km}$:

Coefficient of linear expansion of brass and steel rods are ${\alpha }_1$ and ${\alpha }_2$. Lengths of brass and steel rods are $l_1$ and $l_2$ respectively. If $(l_2-l_1)$ is maintained same at all temperatures, which one of the following relations holds good?

The intensity at the maximum in a Young’s double slit experiment is $I_0$. Distance between two slits is $d=5\lambda$, where $\lambda$ is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance $D=10d$?

Given the value of Rydberg constant is $10^7{\text{m}}^{-1}$, the wave number of the last line of the Balmer series in hydrogen spectrum will be:

The ratio of escape velocity at earth $(v_e)$ to the escape velocity at a planet $(v_p)$ whose radius and mean density are twice as that of earth is:

A long solenoid has 1000 turns. When a current of $4\text{A}$ flows through it the magnetic flux linked with each turn of the solenoid is $4\times 10^{-3}\text{Wb}$. The self-inductance of the solenoid is:

A car is negotiating a curved road of radius $R$. The road is banked at an angle $\theta$. The coefficient of friction between the tyres of the car and the road is ${\mu }_s$. The maximum safe velocity on this road is:

The magnetic susceptibility is negative for:

A siren emitting a sound of frequency $800\text{Hz}$ moves away from an observer towards a cliff at a speed of $15{\text{ms}}^{-1}$. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is: (Take velocity of sound in air $=330{\text{ms}}^{-1}$)

A body of mass $1\text{kg}$ begins to move under the action of a time dependent force $\vec{F}=(2t\hat{i}+3t^2\hat{j})\text{N}$, where $\hat{i}$ and $\hat{j}$ are unit vectors along $x$ and $y$ axis. What power will be developed by the force at the time $t$?

From a disc of radius $R$ and mass $M$, a circular hole of diameter $R$, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?

In a diffraction pattern due to a single slit of width $a$, the first minimum is observed at an angle $30^{\circ }$ when light of wavelength $5000\text{A˚}$ is incident on the slit. The first secondary maximum is observed at an angle of:

A square loop $ABCD$ carrying a current $i$, is placed near and coplanar with a long straight conductor $XY$ carrying a current $I$. The net force on the loop will be:

A black body is at a temperature of $5760\text{K}$. The energy of radiation emitted by the body at wavelength $250\text{nm}$ is $U_1$, at wavelength $500\text{nm}$ is $U_2$ and that at $1000\text{nm}$ is $U_3$. Wien’s constant, $b=2.88\times 10^6\text{nm K}$. Which of the following is correct?

An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is $50\text{cm}$. The next larger length of the column resonating with the same tuning fork is:

The molecules of a given mass of a gas have r.m.s velocity of $200{\text{ms}}^{-1}$ at $27^{\circ }\text{C}$ and $1.0\times 10^5{\text{Nm}}^{-2}$ pressure. When the temperature and pressure of the gas are respectively $127^{\circ }\text{C}$ and $0.05\times 10^5{\text{Nm}}^{-2}$, the r.m.s. velocity of its molecules in ${\text{ms}}^{-1}$ is:

Consider the junction diode as ideal. The value of current flowing through $AB$ is:

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:

An astronomical telescope has objective and eyepiece of focal lengths $40\text{cm}$ and $4\text{cm}$ respectively. To view an object $200\text{cm}$ away from the objective, the lenses must be separated by a distance: