| 2024-09-27 | Give reasons for the following in one or two sentences.\"Acetic acid can be halogenated in the p.... | 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 | In the following reactions, P, Q, R, and S are the major products.\n\nThe correct statement(s) a.... | 0:00 | 1 | |
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| 2024-09-27 | Acetophenone on reaction with hydroxylamine hydrochloride can produce two isomeric oximes. Write.... | 0:00 | 0 | |
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| 2024-09-27 | Identify the set of reagents/reaction conditions X and Y in the following set of transformations.... | 0:00 | 0 | |
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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 | Which of the following has the most acidic hydrogen?.... | 0:00 | 0 | |
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| 2024-09-27 | Find the coordinates of the foot of perpendicular and the perpendicular distance from the point .... | 0:00 | 3 | |
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| 2024-09-27 | The spin only magnetic moment value (in Bohr magneton units) of Cr(CO)6 is.... | 0:00 | 0 | |
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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 mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives.... | 0:00 | 1 | |
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| 2024-09-27 | Write the chemical equations involved in the following reactions : Rosenmund reduction.... | 0:00 | 1 | |
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| 2024-09-27 | The correct structure of ethylenediaminetetraacetic acid (EDTA) is.... | 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 | Suggest a reason for the large difference between the boiling points of butanol and butanal, alt.... | 0:00 | 0 | |
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| 2024-09-27 | All the compounds listed in Column-I react with water. Match the result of the respective reacti.... | 0:00 | 3 | |
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| 2024-09-27 | In Arrhenius equation, k=Ae(-E/RT),A may be termed as the rate constant at _____.... | 0:00 | 1 | |
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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 | State the conditions under which the following preparations are carried out. Give necessary equa.... | 0:00 | 3 | |
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| 2024-09-27 | Give the structure of the major organic products obtained from 3-ethyl-2-pentene under each of t.... | 0:00 | 3 | |
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| 2024-09-27 | For a first order reaction, A→P, the temperature (T) dependent rate constant (k) was found .... | 0:00 | 1 | |
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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 | The ether when treated with HI produces.... | 0:00 | 2 | |
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| 2024-09-27 | Parallel plate capacitor of capacitance C has spacing d between two plates having area A. The re.... | 0:00 | 2 | |
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| 2024-09-27 | Faraday's laws of electrolysis are related to the.... | 0:00 | 1 | |
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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 | Carbon tetrachloride is inflammable..... | 0:00 | 2 | |
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| 2024-09-27 | Explain briefly the formation of the products giving the structures of the intermediates\n.... | 0:00 | 3 | |
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| 2024-09-27 | The hybridisation of carbon atoms in C–C single bond H–C≡C–CH=CH2is.... | 0:00 | 1 | |
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| 2024-09-27 | Dipole moment is shown by.... | 0:00 | 3 | |
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| 2024-09-27 | Which of the following statement(s) is/are correct when a mixture of NaCl and K2Cr2O7 is gently .... | 0:00 | 0 | |
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| 2024-09-27 | (a) Write two main observations of photoelectric effect experiment which could only be explained.... | 0:00 | 2 | |
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| 2024-09-27 | Which one of the following oxides is neutral?.... | 0:00 | 2 | |
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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 | A soluble compound of a poisonous element M, when heated with Zn/H2SO4, gives a colorless and ex.... | 0:00 | 1 | |
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| 2024-09-27 | The variation of the stopping potential V0 with the frequency (v)of the light incident on two di.... | 0:00 | 14 | |
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| 2024-09-27 | In a radioactive decay chain reaction,T90230h nucleus decays into84214Po  nucleus. The rati.... | 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 | Statement-I: Nuclide Al1330 is less stable than Ca2040.Statement-II: Nuclides having odd number .... | 0:00 | 0 | |
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| 2024-09-27 | Account for the following :\n(a) Sulphurous acid is a reducing agent.\n(b) Fluorine forms only o.... | 0:00 | 2 | |
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| 2024-09-27 | A magnetic fieldB=B0y/ak^ is acting into the paper in the+z direction.B0 anda are positive const.... | 0:00 | 1 | |
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| 2024-09-27 | Choose the correct statement..... | 0:00 | 7 | |
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| 2024-09-27 | Statement-I: The plot of atomic number (y-axis) versus number of neutrons ( x-axis) for stable n.... | 0:00 | 0 | |
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| 2024-09-27 | (a) How will you distinguish between the following pairs of compounds :\n(i) Aniline and Ethanam.... | 0:00 | 1 | |
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| 2024-09-27 | A parallel plate capacitor of plate area A and plate separation d is charged to potential differ.... | 0:00 | 0 | |
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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 | The number of atoms in one of this hep unit cell is.... | 0:00 | 1 | |
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| 2024-09-27 | Write the name of the allotrope of sulphur which is stable at room temperature..... | 0:00 | 1 | |
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| 2024-09-27 | For the circuit shown, which of the following statements is true?\n\n.... | 0:00 | 3 | |
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| 2024-09-27 | Show, on a plot, variation of resistivity of (i) a conductor, and (ii) a typical semiconductor a.... | 0:00 | 8 | |
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| 2024-09-27 | How would you convert acetylene to acetone?.... | 0:00 | 2 | |
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| 2024-09-27 | Write the preparation of \\(\\mathrm{Na}_2 \\mathrm{Cr}_2 \\mathrm{O}_7\\) from chromite ore..... | 0:00 | 0 | |
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| 2024-09-27 | A container of fixed volume has a mixture of one mole of hydrogen and one mole of helium in equi.... | 0:00 | 1 | |
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| 2024-09-27 | Which of the following is most reactive in nucleophilic addition reactions? .... | 0:00 | 4 | |
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| 2024-09-27 | Write the intermediate steps for each of the following reactions\n.... | 0:00 | 1 | |
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| 2024-09-27 | Outline the principles of refining of the following metals :\\(Si\\).... | 0:00 | 1 | |
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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 | The freezing point of a solution containing \\(5 \\mathrm{~g}\\) of benzoic acid \\(\\left(\\mat.... | 0:00 | 1 | |
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| 2024-09-27 | ..........ring is most strained. (cyclopropane, cyclobutane, cyclopentane).... | 0:00 | 0 | |
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| 2024-09-27 | Let [x] be the greatest integer less than or equals to x. Then, at which of the following point .... | 0:00 | 3 | |
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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 | Why is chlorobenzene resistant to nucleophilic substitution reaction?.... | 0:00 | 5 | |
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| 2024-09-27 | Dissolving \\(1.24 g\\) of white phosphorous in boiling \\(NaOH\\) solution in an inert atmosphe.... | 0:00 | 0 | |
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| 2024-09-27 | A straight line through the originO meets the parallel lines 4x+2y=9 and2x+y+6=0 at pointsP andQ.... | 0:00 | 1 | |
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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 | What happens when aniline is treated with\n\\(\\mathrm{CH}_3 \\mathrm{COCl} /\\) Pyridine?.... | 0:00 | 1 | |
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| 2024-09-27 | A beam of light has three wavelengths4144Å, 4972Å and6216Å with a total inte.... | 0:00 | 1 | |
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| 2024-09-27 | The graph of the function cosxcos(x+2)–cos2(x+1)is.... | 0:00 | 1 | |
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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 | Identify X and Y in the following :\n.... | 0:00 | 0 | |
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| 2024-09-27 | A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length .... | 0:00 | 3 | |
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| 2024-09-27 | An orange solid A on heating gave a green residue B, a colourless gas C and water vapour. The dr.... | 0:00 | 1 | |
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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 | How did David Tillman show that \"stability of a community depends on its species richness\"? Ex.... | 0:00 | 0 | |
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| 2024-09-27 | An extended object is placed at point O,10 cm in front of a convex lensL1 and a concave len.... | 0:00 | 2 | |
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| 2024-09-27 | Give the structures of the products in the following reaction.\n.... | 0:00 | 0 | |
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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 | Let ABC be a triangle such that ∠ACB=π6. If a, b and c denote the lengths of the sides op.... | 0:00 | 25 | |
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| 2024-09-27 | A battery is connected between two points A and B on the circumference of a uniform conducting r.... | 0:00 | 1 | |
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| 2024-09-27 | How will you bring about the following conversion?\"4-nitro aniline to 1,2,3-tribromobenzene.\".... | 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 | For2≤r≤n,nr+2nr-1+nr+2 is equal to.... | 0:00 | 1 | |
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| 2024-09-27 | Five identical capacitor plates, each of area A, are arranged such that adjacent plates are at a.... | 0:00 | 0 | |
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| 2024-09-27 | State the conditions under which the following preparation is carried out. \"Aniline from benzen.... | 0:00 | 1 | |
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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 | The reactions, Q to R and R to S, are C-9.75 W-88.7 UA-1.55.... | 0:00 | 0 | |
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| 2024-09-27 | A charge Q is distributed over two concentric hollow spheres of radii r and R(>r) such that t.... | 0:00 | 1 | |
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| 2024-09-27 | ( \\(\\pm\\) ) 2-phenylpropanoic acid on treatment with ( + ) 2-butanol gives (A) and (B). Deduc.... | 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 | Write balanced equations for the following(i) Oxidation of hydrogen peroxide with potassium perm.... | 0:00 | 3 | |
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| 2024-09-27 | Three particles, each of mass m, are situated at the vertices of an equilateral triangle of side.... | 0:00 | 1 | |
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| 2024-09-27 | Write the structures of the products\\[\\left(\\mathrm{CH}_3\\right)_2 \\mathrm{CH}-\\mathrm{OCH.... | 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 | Explain the following(i) H3PO3 is a dibasic acid(ii) Phosphine has a lower boiling point than am.... | 0:00 | 2 | |
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| 2024-09-27 | 2vsl476t93091t7511sywh3hu.... | 0:00 | 183 | |
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| 2024-09-27 | Which of the following is formed when excess of KCN is added to aqueous solution of copper sulph.... | 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 lead chamber process involves oxidation of SO2 by atomic oxygen under the influence of _____.... | 0:00 | 1 | |
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| 2024-09-27 | Write balanced equations for the following.(i) Phosphorus is treated with concentrated nitric ac.... | 0:00 | 0 | |
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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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