AIPMT 2012 Preliminary Mock Test

${\text{CH}}_3\text{CHO}$ and ${\text{C}}_6{\text{H}}_5{\text{CH}}_2\text{CHO}$ can be distinguished chemically by:

$p_A$ and $p_B$ are the vapour pressure of pure liquid components $A$ and $B$, respectively, of an ideal binary solution. If $x_A$ represents the mole fraction of component $A$, the total pressure of the solution will be:

Which one of the following is NOT a condensation polymer?

A metal crystallizes with a face-centered cubic (FCC) lattice. The edge of the unit cell is $408\text{pm}$. The diameter of the metal atom is:

Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?

In the following reaction:

The major product $A$ is:

The enthalpy of fusion of water is $1.435\text{kcal/mol}$. The molar entropy change for the melting of ice at $0^{\circ }\text{C}$ is:

Limiting molar conductivity of ${\text{NH}}_4\text{OH}$ (i.e., ${\Lambda }_m^{\circ }({\text{NH}}_4\text{OH})$) is equal to:

Which one of the following is a mineral of iron?

In Freundlich Adsorption isotherm, the value of $1/n$ is:

Identify the alloy containing a non-metal as a constituent in it.

Buffer solutions have constant acidity and alkalinity because:

Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?

pH of a saturated solution of ${\text{Ba(OH)}}_2$ is 12. The value of solubility product ($K_{sp}$) of ${\text{Ba(OH)}}_2$ is:

$50\text{mL}$ of each gas $A$ and of gas $B$ takes $150$ and $200$ seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas $B$ is $36$, the molecular mass of gas $A$ will be:

The protecting power of lyophilic colloidal sol is expressed in terms of:

Deficiency of vitamin ${\text{B}}_1$ causes the disease:

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is:

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the order:

Which one of the following statements is INCORRECT about enzyme catalysis?

In which of the following compounds, nitrogen exhibits highest oxidation state?

Bond order of 1.5 is shown by:

Maximum number of electrons in a subshell with $l=3$ and $n=4$ is:

The correct set of four quantum numbers for the valence electron of rubidium atom ($Z=37$) is:

In a reaction, $A+B\to \text{Product}$, rate is doubled when the concentration of $B$ is doubled, and rate increases by a factor of $8$ when the concentrations of both the reactants ($A$ and $B$) are doubled. The rate law for the reaction can be written as:

A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

Which one of the following sets of monosaccharides forms sucrose?

Which one of the following statements regarding photochemical smog is NOT correct?

Which of the following statements is NOT valid for oxoacids of phosphorus?

In the following sequence of reactions:
$${\text{CH}}_3\text{Br}\stackrel{\text{KCN}}{\to }\text{A}\stackrel{{\text{H}}_3{\text{O}}^{+}}{\to }\text{B}\stackrel{{\text{LiAlH}}_4/\text{ether}}{\to }\text{C}$$
The end product (C) is:

Which of the following acids does NOT exhibit optical isomerism?

Which nomenclature is NOT according to the IUPAC system?

The pair of species with the same bond order is:

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is:

Aluminium is extracted from alumina (${\text{Al}}_2{\text{O}}_3$) by electrolysis of a molten mixture of:

Which of the following species contains three bond pairs and one lone pair around the central atom?

Which of the following statements is False?

The number of octahedral void(s) per atom present in a cubic close-packed structure is:

Among the following compounds the one that is most reactive towards electrophilic nitration is:

Identify the wrong statement in the following:

In a zero-order reaction for every $10^{\circ }$ rise of temperature, the rate is doubled. If the temperature is increased from $10^{\circ }\text{C}$ to $100^{\circ }\text{C}$, the rate of the reaction will become:

Which of the statements is NOT true?

In which of the following reactions, standard reaction entropy change ($\Delta S^{\circ }$) is positive and standard Gibb’s energy change ($\Delta G^{\circ }$) decreases sharply with increasing temperature?

When ${\text{Cl}}_2$ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from:

Predict the products in the given reaction:

Which one of the alkali metals forms only the normal oxide, ${\text{M}}_2\text{O}$ on heating in air?

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

Sulphur trioxide can be obtained by which of the following reaction:

Standard enthalpy of vapourisation ${\Delta }_{\text{vap}}{H}^{\circ }$ for water at $100^{\circ }\text{C}$ is $40.66\text{kJ/mol}$. The internal energy of vapourisation of water at $100^{\circ }\text{C}$ (in $\text{kJ/mol}$) is:

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

Common cold differs from pneumonia in that:

Which one of the following is NOT a property of cancerous cells whereas the remaining three are?

How many plants in the list given below have composite fruits that develop from an inflorescence?Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry.

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is:

Both autogamy and geitonogamy are prevented in:

Which part of the human ear plays no role in hearing as such but is otherwise very much required?

Water containing cavities in vascular bundles are found in:

Which one of the following is a case of wrong matching?

Which one out of A – D given below correctly represents the structural formula of a basic amino acid?

A patient brought to a hospital with myocardial infarction is normally immediately given:

What is the figure given below showing in particular?

Ribosomal RNA (rRNA) is actively synthesized in:

Which one of the following does NOT differ in E. coli and Chlamydomonas?

Which one is the most abundant protein in the animal world?

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘A’ deficiency?

Which one of the following options gives one correct example each of convergent evolution and divergent evolution?

The gynoecium consists of many free pistils in flowers of:

Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:

Which one of the following statements is FALSE in respect of viability of mammalian sperm?

A single strand of nucleic acid tagged with a radioactive molecule is called:

Measuring Biochemical Oxygen Demand (BOD) is a method used for:

Yeast is used in the production of:

In an area where DDT had been used extensively, the population of birds declined significantly because:

Pheretima and its close relatives derive nourishment from:

People who have migrated from the plains to an area adjoining Rohtang Pass about six months back:

Which one of the following is correctly matched?

Maximum nutritional diversity is found in the group:

Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?

In which one of the following options are the two examples correctly matched with their particular type of immunity?

Which one of the following pairs of hormones are examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it?

Closed vascular bundles lack:

Which one of the following is a WRONG statement?

The figure below is the diagrammatic representation of the E. coli vector pBR322. Which one of the given options correctly identifies its certain component(s)?

Which one of the following is a correct statement?

Widal Test is carried out to test:

The maximum amount of electrolytes and water (70 – 80 percent) from the glomerular filtrate is reabsorbed in which part of the nephron?

The Test-tube Baby Programme employs which one of the following techniques?

Which one of the following is a WRONG statement?

Identify the possible line “A” in the following food chain:Plant $\to$ insect $\to$ frog $\to$ “A” $\to$ Eagle

The human hindbrain comprises three parts, one of which is:

PCR and Restriction Fragment Length Polymorphism (RFLP) are the methods for:

Which one of the following areas in India is a hotspot of biodiversity?

Phyllode is present in:

The highest number of species in the world is represented by:

Motile zygote of Plasmodium occurs in:

Select the correct statement regarding the specific disorder of muscular or skeletal system:

Vexillary aestivation is characteristic of the family:

Given below is the representation of a certain event at a particular stage of a type of cell division. Which stage is this?

Which statement is WRONG for viruses?

The correct sequence of cell organelles during photorespiration is:

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eyebrows, retreating foreheads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was:

A normal-visioned man whose father was colour-blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind?

The best defined function of Manganese in green plants is:

Even in the absence of pollinating agents, seed-setting is assured in:

What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as:

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system?

Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was:

Which part would be most suitable for raising virus-free plants for micropropagation?

The Leydig cells as found in the human body are the secretory source of:

Which one of the following is NOT a part of a transcription unit in DNA?

Gymnosperms are also called soft wood spermatophytes because they lack:

Cycas and Adiantum resemble each other in having:

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?

Compared to those of humans, the erythrocytes in frog are:

A nitrogen-fixing microbe associated with Azolla in rice fields is:

What is correct to say about hormone action in humans?

Cymose inflorescence is present in:

Which one of the following is correctly matched?

What is true about ribosomes?

A process that makes an important difference between $C_3$ and $C_4$ plants is:

Placentation in tomato and lemon is:

If one strand of DNA has the nitrogenous base sequence as ATCTC, what would be the complementary RNA strand sequence?

Select the correct statement from the following regarding cell membrane:

For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of:

Which one is a true statement regarding DNA polymerase used in PCR?

The upright pyramid of number is absent in:

Signals for parturition originate from:

Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?

The common bottle cork is a product of:

Nuclear membrane is absent in:

The cyanobacteria are also referred to as:

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

Which one of the following is NOT a functional unit of an ecosystem?

During gamete formation, the enzyme recombinase participates during:

Anxiety and eating spicy food together in an otherwise normal human may lead to:

Removal of RNA polymerase III from nucleoplasm will affect the synthesis of:

In which one of the following is the genus name, its two characters and its phylum NOT correctly matched?

$F_2$ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as $1:2:1$. It represents a case of:

Select the correct statement with respect to Periplaneta americana:

Cirrhosis of liver is caused by the chronic intake of:

Monascus purpureus is a yeast used commercially in the production of:

The coconut water and the edible part of coconut are equivalent to:

Companion cells are closely associated with:

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in living tissues. Identify the category and the blank component “X”:Structure: Ribose sugar + Base X.

Which one of the following is NOT a gaseous biogeochemical cycle in an ecosystem?

Which one of the following is the correct statement for respiration in humans?

In a CE (Common Emitter) transistor amplifier, the audio signal voltage across the collector resistance of $2\text{k}\Omega$ is $2\text{V}$. If the base resistance is $1\text{k}\Omega$ and the current amplification of the transistor is $100$, the input signal voltage is:

A coil of resistance $400\Omega$ is placed in a magnetic field. If the magnetic flux $\varphi$ (Wb) linked with the coil varies with time $t$ (s) as $\varphi =50t^2+4$, the current in the coil at $t=2\text{s}$ is:

Liquid oxygen at $50\text{K}$ is heated to $300\text{K}$ at constant pressure of $1\text{atm}$. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?

One mole of an ideal gas goes from an initial state $A$ to final state $B$ via two processes: It first undergoes isothermal expansion from volume $V$ to $3V$ and then its volume is reduced from $3V$ to $V$ at constant pressure. The correct $P-V$ diagram representing the two processes is:

A solid cylinder of mass $3\text{kg}$ is rolling on a horizontal surface with velocity $4{\text{ms}}^{-1}$. It collides with a horizontal spring of force constant $200{\text{Nm}}^{-1}$. The maximum compression produced in the spring will be:

An electric dipole of moment $\vec{p}$ is placed in an electric field of intensity $\vec{E}$. The dipole acquires a position such that the axis of the dipole makes an angle $\theta$ with the direction of the field. Assuming that the potential energy of the dipole to be zero when $\theta =90^{\circ }$, the torque and the potential energy of the dipole will respectively be:

The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectile is:

If the nuclear radius of ${}^{27}\text{Al}$ is $3.6\text{Fermi}$, the approximate nuclear radius of ${}^{64}\text{Cu}$ in Fermi is:

Two similar coils of radius $R$ are lying concentrically with their planes at right angles to each other. The currents flowing in them are $I$ and $2I$, respectively. The resultant magnetic field induction at the centre will be:

When a biconvex lens of glass having refractive index $1.47$ is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index:

Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is:

Two spheres $A$ and $B$ of masses $m_1$ and $m_2$ respectively collide. $A$ is at rest initially and $B$ is moving with velocity $v$ along x-axis. After collision $B$ has a velocity $v/2$ in a direction perpendicular to the original direction. The mass $A$ moves after collision in the direction:

A particle has initial velocity $(2\hat{i}+3\hat{j})$ and acceleration $(0.3\hat{i}+0.2\hat{j})$. The magnitude of velocity after $10$ seconds will be:

The height at which the weight of a body becomes $1/16$ th its weight on the surface of earth (radius $R$) is:

Four point charges $-Q,-q,2q$ and $2Q$ are placed, one at each corner of the square. The relation between $Q$ and $q$ for which the potential at the centre of the square is zero is:

When a string is divided into three segments of length $l_1,l_2$ and $l_3$, the fundamental frequencies of these three segments are ${\nu }_1,{\nu }_2$ and ${\nu }_3$ respectively. The original fundamental frequency ($\nu$) of the string is:

A ring is made of a wire having a resistance $R_0=12\Omega$. Find the points $A$ and $B$, as shown in the figure, at which a current carrying conductor should be connected so that the resistance $R$ of the sub circuit between these points is equal to $8/3\Omega$.

A geostationary satellite is orbiting the earth at a height of $5R$ above the surface, $R$ being the radius of the earth. The time period of another satellite in hours at a height of $2R$ from the surface of the earth is:

$ABC$ is an equilateral triangle with $O$ as its centre. ${\vec{F}}_1,{\vec{F}}_2$ and ${\vec{F}}_3$ represent three forces acting along the sides $AB,BC$ and $AC$ respectively. If the total torque about $O$ is zero then the magnitude of $F_3$ is:

If the radius of a star is $R$ and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is $Q$?