| 2024-09-27 | Complete the following reactions with appropriate structures of products/reagents.\n.... | 0:00 | 1 | |
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| 2024-09-27 | If metal ions of group III are precipitated by NH4Cl and NH4OH without prior oxidation by conc. .... | 0:00 | 1 | |
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| 2024-09-27 | The slope in the plot of \\(\\ln [R]\\) vs. time for a first order reaction is .... | 0:00 | 1 | |
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| 2024-09-27 | Write the reaction involved in :(a) Hoffmann-bromamide reaction, and(b) Carbylamine reaction.... | 0:00 | 1 | |
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| 2024-09-27 | By giving example, differentiate between antiseptics and disinfectants..... | 0:00 | 2 | |
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| 2024-09-27 | LetE1E2 andF1F2 be the chords ofS passing through the pointP0(1,1) and parallel to the X-axis an.... | 0:00 | 1 | |
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| 2024-09-27 | A potentiometer draws a steady current from the battery (B) of emf \\(E\\) in the circuit as sho.... | 0:00 | 0 | |
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| 2024-09-27 | In the given reaction scheme, P is a phenyl alkyl ether, Q is an aromatic compound; R and S are .... | 0:00 | 1 | |
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| 2024-09-27 | Complete and balance the following chemical equations :\\(\\mathrm{Cr}_2 \\mathrm{O}_7^{2-}+14 \.... | 0:00 | 4 | |
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| 2024-09-27 | Define self-inductance of a coil. Write its SI unit..... | 0:00 | 0 | |
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| 2024-09-27 | C030C1030-C130C1130+C230C1230-…+C2030C3030 is equal to -.... | 0:00 | 1 | |
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| 2024-09-27 | Let a,b∈R and a2+b2≠0.Suppose\nS=z∈C:z=1a+ibt,t∈R,t≠0, where i=-1..... | 0:00 | 2 | |
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| 2024-09-27 | Among the following, the number of aromatic compound(s) is\n.... | 0:00 | 3 | |
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| 2024-09-27 | The reaction of Pb(NO3)2 and NaCl in water produces a precipitate that dissolves upon the additi.... | 0:00 | 0 | |
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| 2024-09-27 | b) Write the hybridisation and magnetic character of \\(\\left[\\mathrm{FeF}_6\\right]^{3-}\\).[.... | 0:00 | 0 | |
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| 2024-09-27 | Supposedet∑k=0nk∑k=0nCknk2∑k=0nCknk∑k=0nCkn3k=0 holds for some positive integer .... | 0:00 | 2 | |
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| 2024-09-27 | CH3NH2+CHCl3+KOH→ Nitrogen containing compound+KCl +H2O. Nitrogen containing compound is.... | 0:00 | 0 | |
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| 2024-09-27 | Precipitate X is.... | 0:00 | 0 | |
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| 2024-09-27 | In the given circuit, a charge of +80μC is given to the upper plate of the 4μF capacit.... | 0:00 | 0 | |
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| 2024-09-27 | \\(2,2 \\text { - dimethyloxirane can be cleaved by acid }\\left(\\mathrm{H}^{+}\\right) \\text .... | 0:00 | 1 | |
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| 2024-09-27 | If the frequency of the radiation incident on a photosensitive surface increases \\(\\left(v>.... | 0:00 | 1 | |
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| 2024-09-27 | Write the structure of foul smelling compound obtained when aniline is treated with chloroform i.... | 0:00 | 1 | |
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| 2024-09-27 | A positive carbylamine test is given by.... | 0:00 | 1 | |
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| 2024-09-27 | Complete the following reaction with appropriate structure\n.... | 0:00 | 3 | |
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| 2024-09-27 | A potential difference of600V is applied across the plates of a parallel plate condenser. The se.... | 0:00 | 3 | |
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| 2024-09-27 | In the following reaction, the product (s) formed is/are\n\n.... | 0:00 | 0 | |
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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 | 0 | |
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| 2024-09-27 | CH3OH2+is_______acidic than CH3NH3+.... | 0:00 | 1 | |
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| 2024-09-27 | An organic compound \\(\\mathrm{P}\\) having the molecular formula \\(\\mathrm{C}_5 \\mathrm{H}_.... | 0:00 | 0 | |
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| 2024-09-27 | A compound that gives a positive iodoform test is.... | 0:00 | 1 | |
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| 2024-09-27 | In the nuclear process,C611→B511+β++X,X stands for................. | 0:00 | 1 | |
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| 2024-09-27 | Among the following, the coloured compound is.... | 0:00 | 0 | |
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| 2024-09-27 | A disaccharideX cannot be oxidised by bromine water. The acid hydrolysis ofX leads to a laevorot.... | 0:00 | 1 | |
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| 2024-09-27 | When phenol is reacted with \\(\\mathrm{CHCl}_3\\) and \\(\\mathrm{NaOH}\\) followed by acidific.... | 0:00 | 1 | |
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| 2024-09-27 | Give reasons for the following in one or two sentences.(i) Hydrogen bromide cannot be prepared b.... | 0:00 | 0 | |
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| 2024-09-27 | List-I contains reactions and List-II contains major products.\n\nMatch each reaction in List-I .... | 0:00 | 2 | |
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| 2024-09-27 | Define the term ‘band width’ of message signals in communication system..... | 0:00 | 1 | |
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| 2024-09-27 | On heating ammonium dichromate, the gas evolved is.... | 0:00 | 0 | |
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| 2024-09-27 | Hydrogen bonding is maximum in.... | 0:00 | 1 | |
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| 2024-09-27 | Give reasons in two or three sentences only for the following: “The species [CuCl4]2&ndash.... | 0:00 | 1 | |
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| 2024-09-27 | For an ideal gas, consider only P-V work in going from initial state X to the final state Z. The.... | 0:00 | 2 | |
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| 2024-09-27 | Write the balanced chemical equation for the following:Sodium bromate reacts with fluorine in th.... | 0:00 | 2 | |
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| 2024-09-27 | Complete and balance the following reactions.Ca5(PO4)3F + H2SO4 + H2O → Heat ...+ 5CaSO4 . .... | 0:00 | 3 | |
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| 2024-09-27 | Give reason in one or two sentences“Most transition metal compounds are coloured.”.... | 0:00 | 1 | |
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| 2024-09-27 | The IUPAC name of [Ni(NH3)4][NiCl4] is.... | 0:00 | 3 | |
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| 2024-09-27 | In Arrhenius equation for a certain reaction, the value of A and E2 (activation energy) are 4.... | 0:00 | 0 | |
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| 2024-09-27 | A particle of massm and chargeq is moving in a region where uniform, constant electric and magne.... | 0:00 | 0 | |
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| 2024-09-27 | A solution of a non-volatile solute in water freczes at -0.30°C. Th vapor pressure of pure .... | 0:00 | 2 | |
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| 2024-09-27 | Account for the following :Aniline does not undergo Friedel-Crafts reaction..... | 0:00 | 2 | |
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| 2024-09-27 | A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in th.... | 0:00 | 2 | |
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| 2024-09-27 | W and X are, respectively.... | 0:00 | 0 | |
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| 2024-09-27 | Hydrolysis of one mole of peroxodisulphuric acid produces.... | 0:00 | 1 | |
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| 2024-09-27 | An electron gunG emits electrons of energy2keV travelling in the positive x-direction. The elect.... | 0:00 | 3 | |
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| 2024-09-27 | In benzene, carbon uses all the three p-orbitals for hybridisation..... | 0:00 | 0 | |
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| 2024-09-27 | Write the IUPAC names of the following coordination compounds :(i) \\(\\quad\\left[\\mathrm{CoBr.... | 0:00 | 1 | |
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| 2024-09-27 | The standard reduction potential for Cu2+Cu is +0,34 V. Calculate the reduction potential a.... | 0:00 | 0 | |
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| 2024-09-27 | Benzyl chloride (C6H5CH2Cl) can be prepared from toluene by chlorination with.... | 0:00 | 1 | |
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| 2024-09-27 | Which of the following statement(s) is (are) correct?.... | 0:00 | 3 | |
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| 2024-09-27 | A metallic solid sphere is placed in a uniform electric field. The lines of force follow the pat.... | 0:00 | 0 | |
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| 2024-09-27 | Addition of water to acetylene compounds is catalyzed by ...... and ........... | 0:00 | 1 | |
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| 2024-09-27 | How do you convert the following:\nAnisole to 2-methoxyacetophenone\n\n\n.... | 0:00 | 0 | |
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| 2024-09-27 | The IUPAC name of succinic acid is.... | 0:00 | 0 | |
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| 2024-09-27 | Which of the following is the strongest acid?.... | 0:00 | 2 | |
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| 2024-09-27 | State weather given statement is True or False;\nThe kinetic energy of photoelectrons emitted by.... | 0:00 | 0 | |
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| 2024-09-27 | A thin uniform rod, pivoted at O, is rotating in the horizontal plane with constant angular spee.... | 0:00 | 1 | |
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| 2024-09-27 | (CH3)3CMgClon reaction withD2O produces..... | 0:00 | 0 | |
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| 2024-09-27 | A liquid which is permanently supercooled is frequently called.... | 0:00 | 0 | |
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| 2024-09-27 | Consider an electric field E=E0x, where E0is a constant. The flux through the shaded area (as sh.... | 0:00 | 0 | |
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| 2024-09-27 | The first ionisation potential of nitrogen and oxygen atoms are related as follows..... | 0:00 | 1 | |
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| 2024-09-27 | Two thin lenses, when in contact, produce a combination of power + 10 D. When they are.... | 0:00 | 1 | |
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| 2024-09-27 | Which one of the following compounds shows the presence of intramolecular hydrogen bond?.... | 0:00 | 1 | |
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| 2024-09-27 | The value of x is ___.... | 0:00 | 12 | |
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| 2024-09-27 | o8brkful5y9hgza4gjb777m14.... | 0:00 | 1 | |
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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 | Iodine molecule dissociates into atoms after absorbing light to (4500 A0). If one quantum of rad.... | 0:00 | 35 | |
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| 2024-09-27 | Three glass cylinders of equal heightH=30cm and same refractive indexn=1.5 are placed on a horiz.... | 0:00 | 2 | |
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| 2024-09-27 | d19vmebvx6l3iiz03krztd6z2.... | 0:00 | 6 | |
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| 2024-09-27 | Among the given cations, ………… is most stable.(sec-butyl carbonium io.... | 0:00 | 3 | |
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| 2024-09-27 | Reaction of propanamide with ethanolic sodium hydroxide and bromine will give.... | 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 | A solid mixture (5.0 g) consisting of lead nitrate and sodium nitrate was heated below 600°C.... | 0:00 | 1 | |
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| 2024-09-27 | The image of an object, formed by a plano-convex lens at a distance of8 m behind the lens, .... | 0:00 | 7 | |
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| 2024-09-27 | Amongst the following, the total number of compounds soluble in aqueous NaOH is\n.... | 0:00 | 1 | |
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| 2024-09-27 | An organic liquid ' \\(\\mathrm{A}\\) ' containing \\(\\mathrm{C}, \\mathrm{H}\\) and \\(\\mathr.... | 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 wooden cylinder of diameter 4 r, height h and density ρ/3 is kept on a hole of diameter2&.... | 0:00 | 0 | |
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| 2024-09-27 | A slab of material of refractive index2 shown in figure has a curved surface APB of radius of cu.... | 0:00 | 2 | |
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| 2024-09-27 | The succeeding operations that enable this transformation of states are.... | 0:00 | 4 | |
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| 2024-09-27 | A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q an.... | 0:00 | 1 | |
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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 | In a SN2 substitution reaction of the typeR-Br+Cl-→DMFR-Cl+Br-
Which one of the following h.... | 0:00 | 6 | |
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| 2024-09-27 | Which of the following statement is correct?.... | 0:00 | 0 | |
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| 2024-09-27 | The presence of polar bonds in a polyatomic molecule suggests that the molecule has non–ze.... | 0:00 | 0 | |
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| 2024-09-27 | State TRUE or FALSE\nTwo slits in a Young’s double slit experiment are illuminated by two .... | 0:00 | 0 | |
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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 | Using lens maker's formula, derive the thin lens formula 1f=1v-1ufor a biconvex lens..... | 0:00 | 5 | |
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| 2024-09-27 | An electric dipole of length \\(2 \\mathrm{~cm}\\) is placed at an angle of \\(30^{\\circ}\\) wi.... | 0:00 | 7 | |
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| 2024-09-27 | Give the formulae of the following compounds :\n(a) Potassium tetrahydroxidozincate (II)\n(b) He.... | 0:00 | 1 | |
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| 2024-09-27 | Match the nuclear processes given in Column-I with the appropriate option(s) in Column-II.\n.... | 0:00 | 0 | |
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| 2024-09-27 | Arrange the following compounds in the increasing order of their acidic strength :\n.... | 0:00 | 0 | |
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