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Neet PYQ 2007

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Passage cells are thin-walled cells found in:
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The opening of floral buds into flowers is a type of:
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Telomere repetitive DNA sequences control the function of eukaryotic chromosomes because they:
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Identify the odd combination of the habitat and the particular animal concerned.
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In the leaves of plants, malic acid formation during fixation occurs in the cells of:
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A human male produces sperms with the genotypes AB, Ab, aB and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?
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Which of the following ecosystem types has the highest annual net primary productivity?
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In human body, which one of the following is anatomically correct?
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Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?
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The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
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One of endangered species of Indian medicine plants is that of:
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In the hexaploid wheat, the haploid () and basic () numbers of chromosomes are:
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In cloning of cattle a fertilized egg is taken out of the mother's womb and:
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Which one of the following statements is correct?
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One of the important consequences of geographical isolation is:
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Flagellated male gametes are present in all the three of which one of the following sets?
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Molecular basis of organ differentiation depends on the modulation in transcription by:
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Increased asthmatic attacks in certain seasons are related to:
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Which of the following is a slime mould?
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Which one of the following is an example of negative feedback loop in humans?
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Ergot of rye is caused by a species of:
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Geometric representation of age structure is a characteristic of:
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Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?
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Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this act?
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Among the human ancestors the brain size was more than in:
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The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?
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The wavelength of light absorbed by form of phytochrome is:
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Which part of ovary in mammals acts as an endocrine gland after ovulation?
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Which one of the following is not a constituent of cell membrane?
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The concept of chemical evolution is based on:
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In maize, hybrid vigour is exploited by:
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In gymnosperms, the pollen chamber represents:
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During transcription, RNA polymerase holoenzyme binds to a gene promoter and assumes a saddle-like structure. What is its DNA-binding sequence?
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In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:
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Industrial melanism as observed in peppered moth proves that:
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"Foolish seedling" disease of rice led to the discovery of:
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Differentiation of organs and tissues in a developing organism is associated with:
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The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:
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Lysozyme that is present in perspiration, saliva and tears, destroys:
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During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?
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The Okazaki fragments in DNA chain growth:
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The two polynucleotide chains in DNA are:
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Which one of the following is a viral disease of poultry?
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Inheritance of skin colour in humans is an example of:
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One gene-one enzyme relationship was established for the first time in:
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A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of:
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In which one of the following preparations are you likely to come across cell junctions most frequently?
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Which one of the following pairs is mismatched?
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About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:
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Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, then segregation will show:
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What is common between parrot, platypus and kangaroo?
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Which one of the following is being utilized as a source of bio-diesel in the Indian countryside?
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In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?
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In the human female, menstruation can be deferred by the administration of:
55medium1 markmcq
Select the correct statement from the following:
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Two plants can be conclusively said to belong to the same species if they:
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A sequential expression of a set of human genes occurs when a steroid molecule binds to the:
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In a coal fired power plant electrostatic precipitators are installed to control emission of:
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Probiotics are:
60medium1 markmcq
Which pair of the following belongs to Basidiomycetes?
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Spore dissemination in some liverworts is aided by:
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A person who is on a long hunger strike and is surviving only on water, will have:
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Which one of the following pairs, is not correctly matched?
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A common test to find the genotype of a hybrid is by:
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Which one of the following is a matching pair of a body feature and the animal possessing it?
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Which of the following pairs are correctly matched?
image
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If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
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A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly?
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What is true about Nereis, Scorpion, Cockroach and Silver fish?
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The finches of Galapagos islands provide an evidence in favour of:
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Two cells A and B are contiguous. Cell A has osmotic pressure , turgor pressure and diffusion pressure deficit . Cell B has osmotic pressure , turgor pressure and diffusion pressure deficit . The result will be:
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Which one of the following elements is not an essential micronutrient for plant growth?
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Male gametes in angiosperms are formed by the division of:
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Which one of the following is surrounded by a callose wall?
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Which one of the following statements about mycoplasma is wrong?
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Which one of the following is not a bioindicator of water pollution?
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Select the wrong statement from the following:
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Which one of the following pairs of organisms are exotic species introduced in India?
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Which one of the following statement is correct?
80medium1 markmcq
Bowman's glands are located in the:
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The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for:
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Compared to a bull, a bullock is docile because of:
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What is common to whale, seal and shark?
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All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is:
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Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?
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Ultrasound of how much frequency is beamed into human body for sonography?
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The biological organisation starts with:
88medium1 markmcq
Which one of the following pairs is wrongly matched?
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In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in generation?
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Adaptive radiation refers to:
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If the mean and the median pertaining to a certain character of a population are of the same value, the following is most likely to occur:
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When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:
93medium1 markmcq
Which one of the following is a fat-soluble vitamin and its related deficiency disease?
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ICBN stands for:
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If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?
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A plant requires magnesium for:
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The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of:
98medium1 markmcq
A high density of elephant population in an area can result in:
99medium1 markmcq
A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
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For a critical study of secondary growth in plants, which one of the following pairs is suitable:
101medium1 markmcq
Calculate the of a solution at that contains of hydronium ions.
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Which of the following will give a pair of enantiomorphs? ()
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The correct order of increasing thermal stability of , , and is:
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A weak acid, , has a of . If of this acid is dissolved in one litre of water, the percentage of acid dissociated at equilibrium is closest to:
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The number of moles of that will be needed to react with one mole of sulphite ion in acidic solution is:
106medium1 markmcq
Identify the incorrect statement among the following:
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Which of the following oxidation states are the most characteristic for lead and tin respectively?
108medium1 markmcq
The correct order of bond length among , , is:
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Which of the following represents the correct order of the acidity in the given compounds?
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The following equilibrium constants are given:
image
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Which one of the following vitamins is water-soluble?
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If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral, it may mean that:
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Consider the following sets of quantum numbers
image
Which of the following sets of quantum number is not possible?
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Which one of the following ions is the most stable in aqueous solution? (At. No. )
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Concentrated aqueous sulphuric acid is by mass and has a density of . The volume of acid required to make one litre of solution is:
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Which one of the following ionic species has the greatest proton affinity to form stable compound?
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has a chiral center. Which one of the following represents its configuration?
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aqueous solution of a weak acid () is ionised. If for water is , the lowering in freezing point of the solution is:
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Which one of the following polymers is prepared by condensation polymerization?
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The Langmuir adsorption isotherm is deduced using the assumption:
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The reaction of hydrogen and iodine monochloride is given as: This reaction is of first order with respect to and . The following mechanisms were proposed:Mechanism A: Mechanism B: (slow) (fast)Which mechanism is consistent with the rate law?
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and are chiral molecules, their chirality is due to:
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In which of the following the hydration energy is higher than the lattice energy?
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Which one of the following on reduction with lithium aluminium hydride yields a secondary amine?
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Consider the following reactions:(i) , (ii) , (iii) , (iv) , The enthalpy of formation of is:
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Given that bond energy of and is and respectively and for is . The bond enthalpy of is:
127medium1 markmcq
Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. is called:
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Which one of the following anions is present in the chain structure silicates?
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The fraction of total volume occupied by the atoms present in a simple cube is:
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For the following anions: (i) , (ii) , (iii) . (Question implies adding (iv) based on options). The increasing order of nucleophilicity in a polar protic solvent would be:
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The product formed in aldol condensation is:
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If is doped with of , the concentration of cation vacancies will be ():
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The -electron configurations of , , and are , , and respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
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The order of decreasing reactivity towards an electrophilic reagent for the following: (i) Benzene, (ii) Toluene, (iii) Chlorobenzene, and (iv) Phenol would be:
135medium1 markmcq
In which of the following pairs, the two species are isostructural?
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If the cold junction of a thermocouple is kept at and the hot junction is kept at , then the relation between neutral temperature () and temperature of inversion () is:
137easy1 markmcq
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show:
138medium1 markmcq
In radioactive decay process, the negatively charged emitted -particles are:
139medium1 markmcq
A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels up to the surface of the liquid and moves along its surface. How fast is the light traveling in the liquid?
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What is the value of inductance for which the current is a maximum in a series circuit with and ?
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Three-point charges , and are placed at points , and , respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are:
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A nucleus has mass represented by . If and denote the mass of proton and neutron respectively and the binding energy, then:
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The position of a particle with respect to time along the -axis is given by where is in metre and in second. What will be the position of this particle when it achieves maximum speed along the direction?
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The total power dissipated in watts in the circuit shown here is:
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In the following circuit, the output for all possible inputs and is expressed by the truth table:ShutterstockExplore
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Assuming the sun to have a spherical outer surface of radius , radiating like a black body at temperature , the power received by a unit surface, (normal to the incident rays) at a distance from the centre of the sun is:
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A particle starting from the origin moves in a straight line in the plane. Its coordinates at a later time are . The path of the particle makes with the -axis an angle of:
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If the nucleus has a nuclear radius of about , then would have its radius approximately as:
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A wheel has an angular acceleration of and an initial angular speed of . In a time of , it has rotated through an angle (in radian) of:
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The resistance of an ammeter is and its scale is graduated for a current up to . After an additional shunt has been connected to this ammeter it becomes possible to measure currents up to by this meter. The value of shunt resistance is:
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Under the influence of a uniform magnetic field a charged particle is moving in a circle of radius with constant speed . The time period of the motion:
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The primary and secondary coils of a transformer have and turns respectively. If the magnetic flux linked with the primary coil is given by , where is in weber, is time in second and is a constant, the output voltage across the secondary coil is:
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Two condensers, one of capacity and the other of capacity are connected to a volt battery, as shown. The work done in charging fully both the condensers is:
154hard1 markmcq
A uniform rod of length and mass is free to rotate about point . The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about is , the initial angular acceleration of the rod will be:
155easy1 markmcq
The frequency of a light wave in a material is and wavelength is . The refractive index of material will be:
156easy1 markmcq
In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons respectively. The material is a/an:
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A car moves from to with a uniform speed and returns to with a uniform speed . The average speed for this round trip is:
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A particle executes simple harmonic oscillation with an amplitude . The period of oscillation is . The minimum time taken by the particle to travel half of the amplitude from the equilibrium position is:
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A source emits monochromatic light of wavelength . When placed away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of , the number of photoelectrons liberated, will be reduced by a factor of:
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A block is pushed momentarily along a horizontal surface with an initial velocity . If is the coefficient of sliding friction between and the surface, block will come to rest after a time:
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Two radioactive substances and have decay constants and respectively. At they have the same number of nuclei. The ratio of the number of nuclei of to those of will be after a time interval:
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A hollow cylinder has a charge coulomb within it (at the geometrical centre). If is the electric flux associated with the curved surface , the flux linked with the plane surface is:
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A transformer is used to light a and lamp from a mains. If the main current is , the efficiency of the transformer is approximately:
164medium1 markmcq
A charged particle (charge ) is moving in a circle of radius with uniform speed . The associated magnetic moment is given by:
165medium1 markmcq
A particle of mass moves in the plane with a velocity along the straight line . If the angular momentum of the particle with respect to origin is when it is at and when it is at , then:
166easy1 markmcq
The total energy of electron in the ground state of hydrogen atom is . The kinetic energy of an electron in the first excited state is:
167easy1 markmcq
A steady current of flows through a copper voltmeter for . If the electrochemical equivalent of copper is , the mass of copper deposited on the electrode will be:
168hard1 markmcq
In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential and then made to describe semi-circular paths of radius using a magnetic field . If and are kept constant, the ratio will be proportional to:
169medium1 markmcq
Three resistances each of and an unknown resistance form the four arms of a Wheatstone’s bridge circuit. When a resistance of is connected in parallel to the bridge gets balanced. What is the value of ?
170hard1 markmcq
The particle executing simple harmonic motion has a kinetic energy . The maximum values of the potential energy and the total energy are respectively:
171easy1 markmcq
The electric and magnetic field of an electromagnetic wave are:
172medium1 markmcq
A mass of is put on a flat pan attached to a vertical spring. The spring constant is . What should be the minimum amplitude of the motion, so that the mass gets detached from the pan? ()
173easy1 markmcq
Two satellites of earth, and , are moving in the same orbit. The mass of is four times the mass of . Which one of the following statements is true?
174hard1 markmcq
Charges and are placed at points and , respectively; distance apart. is the midpoint. The work done in moving a charge along the semicircle is:
175easy1 markmcq
A beam of electrons passes un-deflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move:
176easy1 markmcq
A black body is at . It emits energy at a rate that is proportional to:
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An engine has an efficiency of . When the temperature of the sink is reduced by , its efficiency is doubled. The temperature of the source is:
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Monochromatic light of frequency is produced by a laser. The power emitted is . The number of photons emitted, on the average, by the source per second is:
179easy1 markmcq
For a cubic crystal structure which one of the following relations indicating the cell characteristic is correct?
180medium1 markmcq
A common emitter amplifier has a voltage gain of , an input impedance of and an output impedance of . The power gain of the amplifier is:
181easy1 markmcq
The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion is:
182medium1 markmcq
A vertical spring with force constant is fixed on a table. A ball of mass at a height above the free upper end of the spring falls vertically on the spring so that the spring is compressed by a distance . The net work done in the process is:
183easy1 markmcq
and are two vectors and is the angle between them, if , the value of is:
184easy1 markmcq
Dimensions of resistance in an electrical circuit, in terms of dimension of mass , length , time and current , would be:
185hard1 markmcq
A particle moving along -axis has acceleration at time given by , where and are constants. The particle at has zero velocity. In the time interval between and the instant when , the particle’s velocity () is:

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