| 2024-09-27 | Among the following, the brown ring is due to the formation of.... | 0:00 | 3 | |
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| 2024-09-27 | Explain the role of the following : \n(a)NaCN in the separation of ZnS and PbS.\n(b) SiO2 i.... | 0:00 | 1 | |
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| 2024-09-27 | The standard reduction-potential for the half-cellNO3(aq)+2H++e-→NO2( g)+H2O is&.... | 0:00 | 1 | |
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| 2024-09-27 | Upon treatment with ammoniacal H2S, the metal ion that precipitates as a sulfide is.... | 0:00 | 3 | |
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| 2024-09-27 | What is the power of an equiconvex lens of refractive index \\(n _2\\) dipped in a liquid of ref.... | 0:00 | 1 | |
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| 2024-09-27 | Write the balanced equation for the preparation of crystalline silicon from SiCl4..... | 0:00 | 0 | |
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| 2024-09-27 | The major product of the reaction is.... | 0:00 | 2 | |
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| 2024-09-27 | A factory makes an open cardboard box for a jewellery shop from a square sheet of side 18 cm by .... | 0:00 | 2 | |
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| 2024-09-27 | The equilibrium SO2Cl2(g)⇌SO2(g)+Cl2(g) is attained at 25°C in a closed container and an ine.... | 0:00 | 1 | |
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| 2024-09-27 | An alcohol \\(\\mathrm{A}\\), when heated with conc. \\(\\mathrm{H}_2 \\mathrm{SO}_4\\) gives an.... | 0:00 | 0 | |
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| 2024-09-27 | The orthocentre of∆F1MN is.... | 0:00 | 0 | |
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| 2024-09-27 | What is the disadvantage of this system ?.... | 0:00 | 2 | |
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| 2024-09-27 | Fehling's solution A consists of an aqueous solution of copper sulphate while Fehling's solution.... | 0:00 | 0 | |
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| 2024-09-27 | A solution when diluted with H2O and boiled, it gives a white precipitate. In addition to excess.... | 0:00 | 5 | |
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| 2024-09-27 | The displacement of the medium in a sound wave is given by the equationy1=Acos(ax+bt) where A, a.... | 0:00 | 0 | | The Medium
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| 2024-09-27 | The outermost electronic configuration of Cr is.... | 0:00 | 0 | |
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| 2024-09-27 | A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess.... | 0:00 | 0 | |
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| 2024-09-27 | CH32C=CHCOCH3 can be oxidized to CH32C=CHCOOH by:.... | 0:00 | 0 | |
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| 2024-09-27 | HBr is a stronger acid than HI because of hydrogen bonding..... | 0:00 | 0 | |
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| 2024-09-27 | Write structures of the products A, B, C, D and E in the following scheme.... | 0:00 | 1 | |
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| 2024-09-27 | How can the disadvantages of eddy currents be minimized?.... | 0:00 | 4 | |
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| 2024-09-27 | The compound(s) which reacts with NH3 to give boron nitride BN is (are):.... | 0:00 | 0 | |
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| 2024-09-27 | Carbylamine test is performed in alc.KOH by heating a mixture of.... | 0:00 | 0 | |
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| 2024-09-27 | Derive the expression for the self-inductance of a long solenoid..... | 0:00 | 8 | |
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| 2024-09-27 | The equilibrium constant for the reaction, A2+B2⇌2AB, is \\(K\\) then for the backward reaction .... | 0:00 | 4 | |
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| 2024-09-27 | In the following reaction, compound Q is obtained from compound P via an ionic intermediate. C-2.... | 0:00 | 1 | |
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| 2024-09-27 | What are the products of hydrolysis of maltose?.... | 0:00 | 5 | |
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| 2024-09-27 | Enthalpy of dissociation (inmol–1) of acetic acid obtained from the Expt. 2 is.... | 0:00 | 3 | |
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| 2024-09-27 | Amongst the following, the lowest degree of paramagnetism per mole of the compound at 298K will .... | 0:00 | 2 | |
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| 2024-09-27 | If the function \\(f\\) defined as\\[\\mathrm{f}(x)=\\left\\{\\begin{array}{c}\\frac{x^2-9.... | 0:00 | 3 | |
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| 2024-09-27 | Dipole moment is shown by.... | 0:00 | 3 | |
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| 2024-09-27 | Account for the following. Write the answers in four or five sentences only.(i) The experimental.... | 0:00 | 1 | |
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| 2024-09-27 | Account for the following :\\(\\mathrm{Mn}^{3+}\\) is strongly oxidizing whereas \\(\\mathrm{Cr}.... | 0:00 | 1 | |
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| 2024-09-27 | When boron nucleusB510 is bombarded by neutrons, α-particles are emitted. The resulting nuc.... | 0:00 | 1 | |
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| 2024-09-27 | The pH of the solution after experiment is.... | 0:00 | 0 | |
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| 2024-09-27 | Differentiate between :Nucleoside and Nucleotide.... | 0:00 | 1 | |
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| 2024-09-27 | A parallel beam of light strikes a piece of transparent glass having cross section as shown in t.... | 0:00 | 0 | |
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| 2024-09-27 | The value of log10K for a reaction A⇌B is ______(Given: ΔrH298K°=-54.07kJmol-1,&.... | 0:00 | 0 | |
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| 2024-09-27 | Two point charges q and – q are located at (0, 0, – a) and (0, 0, a) respectively.(a.... | 0:00 | 3 | |
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| 2024-09-27 | Choose the correct statement..... | 0:00 | 7 | |
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| 2024-09-27 | Calculate the wave number for the shortest wavelength transition in the Balmer series of atomic .... | 0:00 | 1 | |
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| 2024-09-27 | When 16.8 g of white solid X were heated, 4.4 g of acid gas A, that turned lime water milky, was.... | 0:00 | 1 | |
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| 2024-09-27 | In Circuit-1 and Circuit-2 shown in the figures, R1=1Ω,R2=2Ω and R3=3Ω.P1 and P2 .... | 0:00 | 0 | |
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| 2024-09-27 | State weather it is True or False:\nThe intensity of light at a distance r from the axis of a lo.... | 0:00 | 1 | | Intensity
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| 2024-09-27 | [X]+H2SO4→[Y]+a colorless gas with irritating smell\n[Y]+K2Cr2O7+H2SO4→ green solution.... | 0:00 | 0 | |
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| 2024-09-27 | Define the following terms with a suitable example of each :\nAntiseptics.... | 0:00 | 1 | |
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| 2024-09-27 | A ray of light is incident normally on one of the faces of a prism of apex angle30° and refr.... | 0:00 | 2 | |
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| 2024-09-27 | The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nit.... | 0:00 | 2 | |
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| 2024-09-27 | Write the preparation of the following:\\(\\mathrm{K}_2 \\mathrm{MnO}_4\\) from \\(\\mathrm{MnO}.... | 0:00 | 3 | |
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| 2024-09-27 | Two parallel wires in the plane of the paper are distancex0 apart. A point charge is moving with.... | 0:00 | 0 | |
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| 2024-09-27 | XeF4 and XeF6 are expected to be.... | 0:00 | 3 | |
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| 2024-09-27 | How can you convert the following?Methanal to ethanol.... | 0:00 | 4 | |
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| 2024-09-27 | Column-I contains a list of processes involving expansion of an ideal gas. Match this with Colum.... | 0:00 | 1 | |
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| 2024-09-27 | The Edison storage cell is represented as:Fe(s)/FeO(s)/KOH(aq)/Ni2O2( s)/Ni(s)The half-cell.... | 0:00 | 7 | |
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| 2024-09-27 | How will you convert ethanal into:(a) But-2-enal(b) Ethanol.... | 0:00 | 1 | |
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| 2024-09-27 | Two spherical planets P and Q have the same uniform densityρ, masses MP and  .... | 0:00 | 1 | |
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| 2024-09-27 | MX, dissociates into M2+ and X-ions in an aqueous solution, with a degree of dissociation (a) of.... | 0:00 | 2 | |
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| 2024-09-27 | A biochemical reaction was carried out in the absence of enzyme and the rate of reaction was fou.... | 0:00 | 0 | |
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| 2024-09-27 | The volume of this hcp unit cell is.... | 0:00 | 1 | |
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| 2024-09-27 | Let \\(\\vec{a}\\) and \\(\\vec{b}\\) be two non-collinear unit vectors. If \\(\\vec{u}=\\vec{a}.... | 0:00 | 1 | |
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| 2024-09-27 | Statement-I: Addition of bromine to trans-2-butene yields meso-2, 3-dibromo butane.Statement-II:.... | 0:00 | 2 | |
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| 2024-09-27 | Determine the values ofx  for which the following function fails to be continuous or differ.... | 0:00 | 2 | |
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| 2024-09-27 | Statement-I: LiCl is predominantly a covalent compound.Statement-II: Electronegativity differenc.... | 0:00 | 0 | |
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| 2024-09-27 | Find the shortest distance of the point(0,c) from the parabola y=x2, where 0≤c≤5..... | 0:00 | 3 | |
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| 2024-09-27 | All molecules with polar bonds have dipole moment.... | 0:00 | 0 | |
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| 2024-09-27 | Write the chemical reactions associated with the ‘borax bead test of cobalt (II) oxide..... | 0:00 | 0 | |
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| 2024-09-27 | A diminished image of an object is to be obtained on a screen 1.0 mfrom it. This can be ach.... | 0:00 | 1 | |
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| 2024-09-27 | How will you bring about the following conversions?\"4-nitrobenzaldehyde from benzenc\".... | 0:00 | 1 | |
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| 2024-09-27 | A monochromatic light is incident from air on a refracting surface of a prism of angle75° a.... | 0:00 | 0 | |
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| 2024-09-27 | Correct option(s) for the following sequence of reaction is are\n.... | 0:00 | 0 | |
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| 2024-09-27 | A parallel plate capacitor of area A, plate separation d and capacitance C is filled with three .... | 0:00 | 5 | |
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| 2024-09-27 | Both [Ni(CO)4] and [Ni(CN)4]2– are diamagnetic. The hybridisations of nickel in these comp.... | 0:00 | 0 | |
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| 2024-09-27 | A solid sphere of radius R has a charge Q distributed in its volume with a charge density ρ.... | 0:00 | 2 | |
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| 2024-09-27 | Draw the structure of P4O10..... | 0:00 | 5 | |
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| 2024-09-27 | k2fc1w09xytsrzn8f0ix5c9pf.... | 0:00 | 0 | |
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| 2024-09-27 | The amount of water produced (in g) in the oxidation of I mole of rhombic sulphur by cone. HNO3 .... | 0:00 | 0 | |
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| 2024-09-27 | The plot of logKf versus 1T for a reversible reaction A(g)⇌P(g) is shown.\nPre-exponential facto.... | 0:00 | 2 | |
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| 2024-09-27 | The vapour pressure of pure benzene at a certain temperature is 640 mmHg. A non-volatile, non-el.... | 0:00 | 1 | |
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| 2024-09-27 | If the freering point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia comple.... | 0:00 | 2 | |
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| 2024-09-27 | The freezing point of the solution M is.... | 0:00 | 1 | |
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| 2024-09-27 | A substanceAxBy crystallises in a face centred cubic (fcc) lattice in which atoms A occupy each .... | 0:00 | 1 | |
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| 2024-09-27 | Which of the following is more acidic and why?\n.... | 0:00 | 1 | |
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| 2024-09-27 | For the gas phase reaction, C2H4+H2⇌C2H6(ΔH=-32.7kcal) carried out in a vessel, the e.... | 0:00 | 1 | |
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| 2024-09-27 | In the uranium radioactive series, the initial nucleus isU92238 and the final nucleus is P82206b.... | 0:00 | 0 | |
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| 2024-09-27 | Which force causes the train to elevate up ?.... | 0:00 | 2 | |
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| 2024-09-27 | What is the advantage of this system?.... | 0:00 | 1 | |
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| 2024-09-27 | Two large circular discs separated by a distance of 0.01 m are connected to a battery via a swit.... | 0:00 | 2 | |
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| 2024-09-27 | One gram mole of oxygen at27°C and one atmospheric pressure is enclosed in a vessel.\n(a) A.... | 0:00 | 3 | |
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| 2024-09-27 | State TRUE or FALSE\nWater in a closed tube (see figure) is heated with one arm vertically place.... | 0:00 | 0 | |
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| 2024-09-27 | A bullet is fired vertically upwards with velocity v from the surface of a spherical planet. Whe.... | 0:00 | 2 | |
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| 2024-09-24 | A closely wound circular coil of radius \\(6.28 cm\\), having 50 turns carries a steady current .... | 0:00 | 37 | |
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| 2024-09-24 | Which of the following options correctly matches the name of the hormone to its site of producti.... | 0:00 | 1 | |
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| 2024-09-24 | Assertion (A) : The equivalent resistance between points \\(A\\) and \\(B\\) in the given networ.... | 0:00 | 11 | |
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| 2024-09-24 | The magnetic flux (in SI units) through a coil varies with time as \\(\\phi=3 t^2+4 t+7\\). The .... | 0:00 | 19 | |
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| 2024-09-24 | A thin converging lens of focal length \\(10 cm\\) is placed coaxially in contact with a t.... | 0:00 | 47 | |
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| 2024-09-24 | Three cells, each of emf \\(\\mathrm{E}\\) but internal resistances \\(2 \\mathrm{r}, 3 \\mathrm.... | 0:00 | 23 | |
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| 2024-09-24 | A ray of light is incident at an angle of \\(60^{\\circ}\\) on one face of a prism with the pris.... | 0:00 | 2 | |
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| 2024-09-24 | Ethylene oxide when treated with Grignard reagent yields:.... | 0:00 | 3 | |
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| 2024-09-24 | Draw a ray diagram to show how the final image is formed at infinity in an astronomical refracti.... | 0:00 | 4 | |
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| 2024-09-24 | Find:\\[\\int_0^\\pi \\frac{x \\sin x}{\\left(1+\\cos ^2 x\\right)} d x\\].... | 0:00 | 2 | |
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