AIPMT 2008
Paper was held on Sun, May 11, 2008 10:00 AM
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Biology

Bacterial leaf blight of rice is caused by a species
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Thermococcus, Methanococcus and Methanobacterium exemplify
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In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), wh
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Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinitie
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In which one of the following male and female gametophytes do not have free living independent existance?
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Which one of the following is heterosporous?
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Which one of the following in birds, indicates their reptilian ancestry?
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Ascaris is characterized by
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Which one of the following groups of three animals each is correctly matched with their one characteristic morphological
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Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?
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Which one of the following phyla is correctly matched with its two general characteristics?
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Which one of the following is not a characteristic of Phylum Annelida?
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The fleshy receptacle of syconus of fig encloses a number of
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Replum is present in the ovary of flower of
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Dry indehiscent single-seeded fruit formed from bicarpellary syncarpous inferior ovary is
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Endosperm is consumed by developing embryo in the sead of
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The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in
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Carbohydrates are commonly found as starch in plants storage organs. Which of the following five properties of starch (1
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Cellulose is the major component of cell walls of
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A competitive inhibitor of succinic dehydrogenase is
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Modern detergents contain enzyme preparations of
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The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap beca
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The C4 plants are photosynthetically more efficient than C3 plants because
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In leaves of C4 plants malic acid synthesis during CO2 fixation occurs in
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Electrons from excited chlorophyll molecule of photosystem II are accepted first by
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The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
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The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed b
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Importance of day length in flowering of plants was first shown in
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Senescence as an active developmental cellular process in growth and functioning of a flowering plant, is indicated in
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Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon
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What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?
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In humans, blood passes from the post caval to the diastolic right atrium of heart due to
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The most active phagocytic white blood cells are
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Which type of white blood cells are connected with the release of histamine and the natural anticoagulant heparin?
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Cornea transplant in humans is almost never rejected. This is because
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Which one of the following is the correct difference between rod cells and cone cells of our retina?
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During the propagation of a nerve impulse, the action potential results from the movement of
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Which one of the following pair of organs includes only the endocrine glands?
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The blood calcium level is lowered by the deficiency of
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What does the filiform apparatus do at the entrance into ovule?
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Unisexuality of flowers prevents
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Which one of the following is resistant to enzyme action?
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Which one of the following pairs of plant structures has haploid number of chromosomes ?
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In human adult females oxytocin:
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In humans, at the end of the first meiotic division, the male germ cells differentiate into the:
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Which one of the following statements is incorrect about menstruation?
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Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
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Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matc
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Consider the statements given below regarding contraception and answer as directed thereafter: (i) Medical Termination
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Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
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In the DNA molecule:
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Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned a
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Polysome is formed by
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Which one of the following pairs of codons is correctly matched with their function or the signal for the particular ami
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Darwin's finches are a good example of –
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Thorn of Bougainvillea and tendril of Cucurbita are examples of:
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Which one of the following scientist's name is correctly matched with the theory put fourth by him?
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Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envis
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Which one of the following is the correct statement regarding the particular psychotropic drug specified ?
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Match the disease in Column I with the appropriate items (pathogen/ prevention/ treatment) in Column II. .tg {border-c
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Haploids are more suitable for mutation studies than the diploids. This is because:
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Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide ?
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Consider the following four measures (1-4) that could be taken to successfully grow chickpea in an area where bacterial
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Trichoderma harzianum has proved a useful microorganism for:
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Nitrogen fixation in root nodules of Alnus is brought about by:
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Which one of the following proved effective for biological control of nematodal disese in plants?
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Gel electrophoresis is used for:
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The linking of antibiotic resistance gene with the plasmid vector became possible with:
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Cry I endotoxins obtained from Bacillus thuringiensis are effective against:
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Main objective of production/use of herbicide resistant GM crops is to:
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Human insulin is being commercially produced from a transgenic species of:
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Consider the following four statements (1-4) about certain desert animals such as kangaroo-rat. (i) They have dark colo
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Quercus species are the dominant component in:
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The slow rate of decomposition of fallen logs in nature is due to their:
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About 70% of total global carbon is found in:
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Consider the following statements concerning food chains: (i) Removal of 80% tigers from an area resulted in greatly in
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The table below gives the populations (in thousands) of ten species (A-J) in four areas (a-d) consisting of the number o
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Which one of the following is not observed in biodiversity hotspots ?
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World Summit on Sustainable Development (2002) was held in:
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A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this? (i
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According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air poll
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Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute
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The length of different internodes in a culm of sugarcane is variable because of:
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Vascular tissues in flowering plants develop from:
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Earthworms have no skeleton but during burrowing the anterior end becomes turgid and acts as a hydraulic skeleton. It is
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Which one of the following is the true description about an animal concerned?
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Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is co
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The two sub-units of ribosome remain united at a critical ion level of :
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In germinating seeds fatty acids are degraded exclusively in the:
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Vacuole in a plant cell:
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Given below is a diagrammatic cross section of a single loop of human cochlea. Which one of the following options corre
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A transgenic food crop which may help in solving the problem of night blindness in developing countries is
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Chemistry

What volume of oxygen gas (O2) measuread at 0oC and 1 atm, is needed to burn completely 1 L of propane gas (C3H8) measu
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How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g HCl ?
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An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empiri
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The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 $$ \times $$
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If uncertainty in position and momentum are equal, then uncertainty in velocity is
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Which one of the following arrangements does not give the correct picture of the trends indicated against it ?
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Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
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The correct order of increasing bond angles in the following triatomic species is
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If a gas expands at constant temperature, it indicates that
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Volume occupied by one molecule of water (density = 1 g cm$$-$$3) is
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Which of the following are not state functions ? (I) q + w     (II) q (III) w&n
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For the gas phase reaction, PCl5(g)  $$\rightleftharpoons$$ PCl3(g) + Cl2(g) which of the following condition
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Bond dissociation enthalpy of H2, Cl2 and HCl are 434, 242 and 431 kJ mol$$-$$1 respectively. Enthalpy of formation of H
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The dissociation equilibrium of a gass AB2 can be represented as : 2AB2(g) $$\rightleftharpoons$$ 2AB(g) + B2(g) The d
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If the concentration of OH$$-$$ ions in the reaction Fe(OH)3(s) $$\rightleftharpoons$$ Fe3+(aq) + 3OH$$-$$(aq) is decr
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The values of for the reactions, X $$\rightleftharpoons$$ Y + Z      . . . .(i) A $$\r
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The value of equilibrium constant of the reaction HI(g) $$\rightleftharpoons$$ $${1 \over 2}$$H2(g) + $${1 \over 2}$$I2
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Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H+ ion concentration in t
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Base strength of is in the order of
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Which one of the following is most reactive towards electrophilic attack?
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The stability of carbanions in the following. is in the order of
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A (predominantly) is
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In the hydrocarbon, The state of hybridization of carbons 1, 3 and 5 are in the following sequence
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How many stereoisomers does this molecule have? CH3CH$$=$$CHCH2CHBrCH3
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In a SN2 substitution reaction of the type R $$-$$ Br + Cl$$-$$ $$\buildrel {DMF} \over \longrightarrow $$ R$$-$$Cl +
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Number of moles of MnO$$_4^{ - }$$ required to oxidize one mole of ferrous oxalate completely in acidic medium will be
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Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highe
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The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of thes
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The sequence of ionic mobility in aqueous solution is
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A strong base can abstract an $$\alpha $$-hydrogen from
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The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of
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Acetophenone when reacted with a base, C2H5ONa,   yields a stable compound which has the structure
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In a reaction of aniline a coloured product C was obtained. The structure of C would be
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In DNA, the complimentary bases are
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Which of the following is an amine hormone?
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Which one of the following statements is not true?
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With which one of the following elements silicon should be doped so as to give p-type of semiconductor?
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If $$a$$ stands for the edge length of the cubic systems: simple cubic, body centred cubic and face centred cubic, then
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Percentage of free space in a body centred cubic unit cell is
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Which of the following statements is not correct?
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On the basis of the following Eo values, the strongest oxidizing agent is [Fe(CN)6]4$$-$$ $$ \to $$ [Fe(CN)6]3$$-$$ + e
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Standard free energies of formation (in kJ/mol) at 298 K are $$-$$237.2, $$-$$ 394.4 and $$-$$8.2 for H2O(l), CO2(g) and
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Kohlrausch's law states that at
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The rate constants k1 and k2 for two different reactions are 1016 $$ \cdot $$ e$$-$$2000/T and 1015 $$ \cdot $$ e$$-$$
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The bromination of acetone that occurs in acid solution is represented by this equation. CH3COCH3(aq) + Br2(aq) &n
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The angular shape of ozone molecule (O3) consists of
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The correct order of decreasing second ionisation enthalpy of Ti(22), V(23), Cr(24) and Mn(25) is
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Which of the following complexes exhibits the highest paramagnetic behaviour? where gly = glycine, en = ethylenediamin
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In which of the following coordination entities the magnitude of $$\Delta $$o (CFSE in octahedral field) will be maximum
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Green chemistry means such reactions which
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Physics

Which two of the following five physical parameters have the same dimensions ? 1.  Energy density 2. &nb
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If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere
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The distance travelled by a particle starting from rest and moving with an acceleration $${4 \over 3}$$m s$$-$$2, in th
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A particle moves in a straight line with a constant acceleration. It changes its velocity from 10 ms$$-$$1 to 20 ms$$-$$
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A particle of mass m is projected with velocity v making an angle of 45o with the horizontal. When the particle lands on
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A particle shows distance - time curve as given in this figure. The maximum instaneous velocity of the particle is aroun
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A roller coaster is designed such that riders experience ''weightlessness'' as they go round the top of a hill whose ra
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Sand is being dropped on a conveyer belt at the rate of M kg/s. The force necessary to keep the belt moving with a cons
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Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the mag
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Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional forces are 1
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A shell of mass 200 gm is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ of energy. The initial
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A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90o. The mo
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The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around t
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On a new scale of temperature (which is linear) and called the W scale, the freezing and boiling points of water are 39o
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At 10oC the value of the density of a fixed mass of an ideal gas divided by it pressure is x. At 110oC this ratio is
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If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cyclic process
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Two simple harmonic motions of angular frequency 100 and 1000 rad s$$-$$1 have the same displacement amplitude. The rati
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A point performs simple harmonic oscillation of period T and the equation of motion is given by x = a sin($$\omega $$t +
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Two periodic waves of intensities $$I$$1 and $$I$$2 pass through a region at the same time in the same direction. The su
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The wave described by y = 0.25 sin(10$$\pi $$x $$-$$ 2$$\pi $$t), where x and y are in metres and t in seconds, is a wav
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A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the p
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The electric potential at a point in free space due to charge Q coulomb is Q $$ \times $$ 1011 volts. The electric field
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A thin conducting ring of radius R is given a charge +Q. The electric field at the centre O of the ring due to the charg
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In the circuit shown, the current through the 4 $$\Omega $$ resistor is 1 amp when the points P and M are connected to
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A wire of a certain material is stretched slowly by ten percent. Its new resistance and specific resistance become respe
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A current of 3 amp. flows through the 2 $$\Omega $$ resistor shown in the circuit. The power dissipated in the 5 $$\Omeg
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A cell can be balanced against 110 cm and 100 cm of potentiometer wire, respectively with and without being short circui
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An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20oC ?
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A particle of mass m, charge Q and kinetic energy T enters a transverse uniform magnetic field of induction $$\overright
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A closed loop PQRS carrying a current is placed in a uniform magnetic field. If the magnetic forces on segments PS, SR a
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A galvanometer of resistance 50 $$\Omega $$ is connected to a battery of 3 V along with a resistance of 2950 $$\Omega $$
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Curie temperature above which
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A long solenoid has 500 turns. When a current of 2 ampere is passed through it, the resulting magnetic flux linked with
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A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction $${1 \over \pi }\left( {{{Wb} \ov
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In an a.c. circuit the e.m.f. ($$\varepsilon $$) and the current (i)  at any instant are given respectively b
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The velocity of electromagnetic radiation in a medium of permittivity $$\varepsilon $$0 and permeability $$\mu $$0 is gi
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Two thin lenses of focal lengths f1 and f2 are in contact and coaxial. The power of the combination is
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A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm.
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The work function of a surface of a photosensitive material is 6.2 eV. The wavelength of the incident radiation for whic
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A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 $$ \times $$ 106 m s$$-$$1. T
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In the phenomenon of electric discharge through gases at low pressure, the coloured glow in the tube appears as a result
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If M(A; Z), Mp and Mn denote the masses of the nucleus $${}_Z^AX,$$ proton and neutron respectively in units of u (1 u =
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Two nuclei have their mass numbers in the ratio of 1 : 3. The ratio of their nuclear densities would be
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The ground state energy of hydrogen atom is $$-$$ 13.6 eV. When its electron is in the first excited state, its excitati
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Two radioactive materials X1 and X2 have decay constants $$5\lambda $$ and $$\lambda $$ respectively. If initially they
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A p-n photodiode is made of a material with a band gap of 2.0 eV. The minimum frequency of the radiation that can be abs
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The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be
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If the lattice parameter for a crystalline structure is 3.6 $$\mathop A\limits^ \circ $$, then the atomic radius in fcc
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