| 2024-09-27 | Consider the following reaction sequence,\n\nthe correct option(s) is/are:.... | 0:00 | 2 | |
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| 2024-09-27 | Read the following questions and answer as per the direction given below:\nStatement-I: Benzonit.... | 0:00 | 1 | |
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| 2024-09-27 | State the equation for the preparation of following compound. Chlorobenzene from aniline (in 2 s.... | 0:00 | 1 | |
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| 2024-09-27 | A new carbon-carbon bond formation is possible in.... | 0:00 | 2 | |
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| 2024-09-27 | n-propyl bromide on treatment with ethanolic potassium hydroxide produces.... | 0:00 | 0 | |
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| 2024-09-27 | How will you bring about the following conversions? “Benzamide from nitrobenzene”.... | 0:00 | 3 | |
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| 2024-09-27 | Iodide is a better nucleophile than bromide..... | 0:00 | 1 | |
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| 2024-09-27 | The complex showing a spin only magnetic moment of 2.82BM is.... | 0:00 | 1 | |
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| 2024-09-27 | The order of reactivity of phenyl magnesium bromide with the following compounds is\n.... | 0:00 | 0 | |
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| 2024-09-27 | Ammonium dichromate is used in some fireworks. The green coloured powder blown in the air is.... | 0:00 | 2 | |
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| 2024-09-27 | The structure of XeO3 is.... | 0:00 | 0 | |
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| 2024-09-27 | Which of the following has the highest nucleophilicity?.... | 0:00 | 0 | |
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| 2024-09-27 | Arrange the following as indicated. HOCl, HOClO2, HOClO3, HOClO in increasing order of thermal s.... | 0:00 | 0 | |
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| 2024-09-27 | Write the balanced chemical equation for the following reactions.(i) Aqueous solution of sodium .... | 0:00 | 0 | |
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| 2024-09-27 | Geometrical shapes of the complexes formed by the reaction of Ni2+ with Cl–, CN– and.... | 0:00 | 0 | |
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| 2024-09-27 | The value of d in cm (shown in the figure), as estimated from Graham's law, is.... | 0:00 | 1 | |
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| 2024-09-27 | Among the following, the correct statement is.... | 0:00 | 2 | |
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| 2024-09-27 | Dilute HCl oxidizes metallic Fe to Fe+2.... | 0:00 | 1 | |
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| 2024-09-27 | A light source, which emits two wavelengthsλ1=400nm andλ2=600nm , is used in a Young's.... | 0:00 | 4 | |
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| 2024-09-27 | Amongst the following, the most basic compound is.... | 0:00 | 0 | |
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| 2024-09-27 | Rate of physisorption increases with.... | 0:00 | 1 | |
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| 2024-09-27 | There are two large parallel metallic plates S1 and S2carrying surface charge densities σ1 .... | 0:00 | 2 | |
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| 2024-09-27 | The hydrolysis of trialkyl chlorosilane R3SiCl, yields.... | 0:00 | 1 | |
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| 2024-09-27 | At 380° C, the half-life period for the first order decomposition of H2O2 is 360 min. .... | 0:00 | 0 | |
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| 2024-09-27 | A conducting bubble of radius a, thickness t(t<<a) has potential V. Now the bubble collaps.... | 0:00 | 2 | |
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| 2024-09-27 | Each entry in column X is in some way related to the entries in columns Y and Z.\nMatch the appr.... | 0:00 | 0 | |
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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 | Two vibrating strings of the same material but of lengthsL and2 L have radii2 r and r .... | 0:00 | 3 | |
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| 2024-09-27 | Give reason for the following in one or two sentences:\"Solid carbon dioxide is known as dry ice.... | 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 | A rod AB of mass M and length L is lying on a horizontal frictionless surface. A particle of mas.... | 0:00 | 1 | |
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| 2024-09-27 | The value ofΔS°(inJ/Kmol-1) for the given reaction, at1000Kis.... | 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 | If \\(\\mathrm{f}(x)=\\frac{4 x+3}{6 x-4}, x \\neq \\frac{2}{3}\\), then show that (fof) \.... | 0:00 | 2 | |
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| 2024-09-27 | In the core of nuclear fusion reactor, the gas becomes plasma because of.... | 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 | Write the role of coordination compounds with an example in each of the following :\nExtraction .... | 0:00 | 1 | |
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| 2024-09-27 | The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The sm.... | 0:00 | 3 | |
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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 | An azeotropic mixture of two liquids has a boiling point higher than either of the two liquids w.... | 0:00 | 0 | |
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| 2024-09-27 | A thin rod of lengthf /3 is placed along the optic axis of a concave mirror of focal length.... | 0:00 | 1 | |
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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 | Write the reaction involved in Cannizaro's reaction..... | 0:00 | 0 | |
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| 2024-09-27 | CoNH34NO22Cl exhibits:.... | 0:00 | 2 | |
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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 | With the help of the circuit diagram, explain the working of a diode as a half-wave rectifier..... | 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 | If \\(P(x)=a x^2+b x+c\\) and \\(Q(x)=-a x^2+d x+c\\), where \\(a c \\neq 0\\), then \\(P(x) Q(x.... | 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 | Give reason in one or two sentences for the following:“Hydrazones of aldehydes and ketones.... | 0:00 | 8 | |
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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 | Read the following questions and answer as per the direction given below:\nStatement-I: Aryl hal.... | 0:00 | 3 | |
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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 | Complete and balance the following reaction: Copper reacts with HNO3 to give NO and NO2 in the m.... | 0:00 | 5 | |
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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 | Write the balanced chemical equations for the following.(i) Sodium nitrite is produced by absorb.... | 0:00 | 0 | |
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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 | In the following reaction, identify the compounds A and BPCl5 + SO2 → A + B.... | 0:00 | 3 | |
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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 | ____ phosphorus is reactive because of its highly strained tetrahedral structure..... | 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 | Th90234 disintegrates to give  Pb82206 as the final product. How many alpha and beta partic.... | 0:00 | 0 | |
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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 | Cu64 (half-life =12.8 h decays by β-emission 38%, β+emission ( 19%) and electron .... | 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 | The value of ΔG°(KJ/mol) for the given cell is (take 1F=96500Cmol-1 ).... | 0:00 | 1 | |
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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 | In the following compounds the order of acidity is\n.... | 0:00 | 1 | |
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| 2024-09-27 | Draw the structure of P4O10..... | 0:00 | 5 | |
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| 2024-09-27 | When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water, the sodiu.... | 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 molecules that will have dipole moment are.... | 0:00 | 1 | |
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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 | A \\(20.0 cm ^3\\) mixture of \\(CO , CH _4\\) and He gases is exploded by an electric discharge.... | 0:00 | 4 | |
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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 | A hollow double concave lens is made of very thin transparent material. It can be filled with ai.... | 0:00 | 3 | |
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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 | A prism of refracting angle30° is coated with a thin film of transparent material of refrac.... | 0:00 | 1 | |
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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 | To Verify Ohm's law, a student is provided with a test resistor \\(\\mathrm{R}_{\\mathrm{T}}\\),.... | 0:00 | 3 | |
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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 | A rigid insulated wire frame in the form of a right angled triangle ABC, is set in a vertical pl.... | 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 | Determine the distance of closest approach when an alpha particle of kinetic energy \\(3.95 \\ma.... | 0:00 | 7 | |
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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 | Consider two conducting wires \\(\\mathrm{A}\\) and \\(\\mathrm{B}\\) of the same diameter but m.... | 0:00 | 27 | |
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| 2024-09-24 | State three postulates of Bohr's theory of hydrogen atom..... | 0:00 | 11 | |
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| 2024-09-24 | In Young's double-slit experiment, the two slits are \\(1.0 mm\\) apart. They are illuminated wi.... | 0:00 | 43 | |
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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 germanium crystal is doped with antimony. With the help of energy-band diagram, explain how th.... | 0:00 | 5 | |
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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 | Obtain an expression for self-inductance of a long solenoid of length \\(\\mathrm{L}\\) and cros.... | 0:00 | 6 | |
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