| 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 | {"english":"Write any two consequences of Lanthanoid Contraction..... | 0:00 | 1 | |
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| 2024-09-27 | What are Homoleptic complexes?.... | 0:00 | 2 | |
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| 2024-09-27 | A proton and an electron have equal speeds. Find the ratio of de Broglie wavelengths associated .... | 0:00 | 2 | |
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| 2024-09-27 | If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction.... | 0:00 | 1 | |
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| 2024-09-27 | The work done in carrying a point charge from one point to another in an electrostatic field dep.... | 0:00 | 3 | |
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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 | Write the chemical equation involved in :\nReimer-Tiemann reaction.... | 0:00 | 0 | |
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| 2024-09-27 | Assertion (A) : Diamagnetic substances exhibit magnetism.Reason (R) : Diamagnetic materials do n.... | 0:00 | 0 | |
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| 2024-09-27 | Write anode, cathode and overall reaction of lead storage battery..... | 0:00 | 0 | |
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| 2024-09-27 | How many optically active stereoisomers are possible for butane–2, 3–diol?.... | 0:00 | 3 | |
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| 2024-09-27 | A student is performing an experiment using a resonance column and a tuning fork of frequency 24.... | 0:00 | 3 | |
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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 | Answer the following :What is tincture of iodine? What is its use?.... | 0:00 | 0 | |
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| 2024-09-27 | Name the water soluble vitamin which is a powerful antioxidant. Give one of its natural source..... | 0:00 | 0 | |
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| 2024-09-27 | Determine the osmotic pressure of a solution prepared by dissolving \\(25 mg\\) of \\(K _2 SO _4.... | 0:00 | 0 | |
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| 2024-09-27 | Which of the following will have least hindered rotation about carbon-carbon bond?.... | 0:00 | 0 | |
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| 2024-09-27 | Some physical quantities are given in Column-I and some possible SI units in which these quantit.... | 0:00 | 3 | |
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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 | Define the following terms :(i) Enantiomers(ii) Racemic mixture.... | 0:00 | 3 | |
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| 2024-09-27 | Define transition elements. Why do transition metals have higher enthalpies of atomisation? Whic.... | 0:00 | 2 | |
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| 2024-09-27 | The most common oxidation state for all lanthanoids is : .... | 0:00 | 1 | |
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| 2024-09-27 | Give reasons for the following in one or two sentences:\"Graphite is used as a solid lubricant.\.... | 0:00 | 3 | |
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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 | 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 | Define the following terms :\nMultimolecular colloid.... | 0:00 | 3 | |
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| 2024-09-27 | AmongPbS,CuS,HgS,MnS,Ag2S,NiS,CoS,Bi2S3andSnS2 the total number of black coloured sulphides is.... | 0:00 | 1 | |
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| 2024-09-27 | Answer the following questions on the basis of the given figure :\n\nDefine the process depicted.... | 0:00 | 0 | |
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| 2024-09-27 | In thermodynamics the P-V work done is given byw=-∫dVPext.\nFor a system undergoing a part.... | 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 | Ifan=∑r=0n1Crn then ∑r=0nrCrn is.... | 0:00 | 0 | |
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| 2024-09-27 | Arrange the following in increasing order of basic strength: methylamine, dimethylamine, aniline.... | 0:00 | 0 | |
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| 2024-09-27 | Show that the time required for the completion of \\(\\frac{3}{4}\\) th of a first-order reactio.... | 0:00 | 1 | |
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| 2024-09-27 | The modern atomic mass unit is based on the mass of ______.... | 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 | Let \\(-\\frac{\\pi}{6}<\\theta<-\\frac{\\pi}{12}\\). Suppose \\(\\alpha_1\\) and \\(\\bet.... | 0:00 | 2 | |
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| 2024-09-27 | Amongst the three isomers of nitrophenol, the one that is least soluble in water is ............. | 0:00 | 0 | |
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| 2024-09-27 | Which of the following statement(s) is (are) correct with reference to the ferrous and ferric io.... | 0:00 | 2 | |
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| 2024-09-27 | A plano-convex lens has a thickness of 4 cm. When placed on a horizontal table, with the cu.... | 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 | A1 and A2 are two ores of metal M. A1 on calcination gives black precipitate, CO2 and water.\n\n.... | 0:00 | 0 | |
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| 2024-09-27 | Give reasons for the following:CH2=CH– is more basic than HC≡C–..... | 0:00 | 1 | |
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| 2024-09-27 | Which of the following pairs give positive Tollen's test.... | 0:00 | 2 | |
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| 2024-09-27 | Spherical aberration in a thin lens can be reduced by.... | 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 | There is a solution of p-hydroxybenzoic acid and p-amino benzoic acid. Discuss one method by whi.... | 0:00 | 1 | |
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| 2024-09-27 | Draw the resonating structures of\n.... | 0:00 | 0 | |
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| 2024-09-27 | Give reasons for the following in one or two sentences. Dimethylamine is a stronger base than tr.... | 0:00 | 2 | |
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| 2024-09-27 | A thin slice is cut out of a glass cylinder along a plane parallel to its axis.The slice is plac.... | 0:00 | 0 | |
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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 | The compound YBa2Cu3O7 which shows that superconductivity has copper in an oxidation state ......... | 0:00 | 0 | |
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| 2024-09-27 | For a given reversible reaction at a fixed temperature, equilibrium constant Kp and Kc are relat.... | 0:00 | 6 | |
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| 2024-09-27 | Formation of phenol from chlorobenzene is an example of ...... aromatic substitution..... | 0:00 | 2 | |
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| 2024-09-27 | Seven capacitors each of capacitance 2μF are connected in a configuration to obtain an effe.... | 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 | In the alumino-thermite process, aluminium acts as.... | 0:00 | 2 | |
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| 2024-09-27 | The option(s) with only amphoteric oxides is(are).... | 0:00 | 1 | |
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| 2024-09-27 | As per IUPAC nomenclature, the name of the complex [Co(H2O)4(NH3)2] Cl3 is.... | 0:00 | 2 | |
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| 2024-09-27 | Give equations of the following reactions :\n Phenol is treated with conc. \\(\\mathrm{HNO}.... | 0:00 | 2 | |
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| 2024-09-27 | A radioactive nucleus decays by emitting one alpha and two beta particles, the daughter nucleus .... | 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 | Consider a reaction, aG+bH→ products. When concentration of both the reactants G and H is d.... | 0:00 | 2 | |
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| 2024-09-27 | The light radiations with discrete quantities of energy are called....................... | 0:00 | 0 | |
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| 2024-09-27 | Write the balanced chemical equations for the following.(i) Hypophosphorous acid is heated.(ii) .... | 0:00 | 3 | |
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| 2024-09-27 | For a glass prism, the angle of minimum deviation will be smallest for the light of-.... | 0:00 | 2 | |
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| 2024-09-27 | Aryl halides are less reactive than alkyl halides towards nucleophilic reagents. Give a reason..... | 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 | If the cathode is a Hg electrode, the maximum weight (in gram) of amalgam formed from this solut.... | 0:00 | 1 | |
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| 2024-09-27 | The atomic masses of \\(He\\) and \\(Ne\\) are 4 and \\(20 amu\\), respectively. The value of th.... | 0:00 | 0 | |
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| 2024-09-27 | Which one of the following structures has the IUPAC name 3-ethynyl-2-hydroxy-4-methylhex-3-en-5-.... | 0:00 | 5 | |
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| 2024-09-27 | Complete the following chemical reactions :\n(a) MnO2+4HCl⟶\n(b) XeF6+KF⟶\n(c) I-(.... | 0:00 | 1 | |
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| 2024-09-27 | Why does a convex mirror always produce a virtual image ?.... | 0:00 | 6 | |
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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 | The total number of moles of chlorine gas evolved is.... | 0:00 | 0 | |
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| 2024-09-27 | The allowed energy for the particle for a particular value ofn is proportional to.... | 0:00 | 1 | |
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| 2024-09-27 | Diamond is harder than graphite..... | 0:00 | 1 | |
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| 2024-09-27 | Iodoform test is not given by:.... | 0:00 | 0 | |
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| 2024-09-27 | The magnitude of q2 is............. | 0:00 | 0 | |
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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 | 75.2g of C2H5OH (phenol) is dissolved in a solvent of Kf=14. If the depression in freezing point.... | 0:00 | 1 | |
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| 2024-09-27 | A proton is fired from very far away towards a nucleus with charge Q=120e, wheree is the electro.... | 0:00 | 1 | |
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| 2024-09-27 | Aluminium sulphide gives a foul odour when it becomes damp. Write a balanced chemical equation f.... | 0:00 | 0 | |
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| 2024-09-27 | Identify which liquid will have a higher vapour pressure at 90°C if the boiling points of t.... | 0:00 | 1 | |
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| 2024-09-27 | The major organic product in the reaction, CH3-O-CHCH32+HI→ Product is:.... | 0:00 | 4 | |
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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 | In allene (C3H4 ), the type(s) of hybridisation of the carbon atoms, is (are).... | 0:00 | 1 | |
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| 2024-09-27 | A real image of a distant object is formed by a plano-convex lens on its principal axis. Spheric.... | 0:00 | 1 | |
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| 2024-09-27 | An eye specialist prescribes spectacles having combination of convex lens of focal length40cm in.... | 0:00 | 1 | |
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| 2024-09-27 | For the reaction \\(3 A \\rightarrow 2 B\\), rate of reaction \\(+\\frac{d[B]}{d t}\\) is equal .... | 0:00 | 1 | |
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| 2024-09-27 | The ground state energy of hydrogen atom is –13.6 eV. Consider an electronic state of He+ .... | 0:00 | 2 | |
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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 | The basic nature of hydroxide of group 13 (group IIIA) decreases progressively down the group..... | 0:00 | 0 | |
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| 2024-09-27 | One mole of a diatomic ideal gas(γ=1.4) is taken through a cyclic process starting from poi.... | 0:00 | 0 | |
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| 2024-09-27 | A prism of refractive indexn1 and another prism of refractive index n2are stuck together with a .... | 0:00 | 0 | |
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| 2024-09-27 | What happens if external potential applied becomes greater than \\(\\mathrm{E}_{\\text {cell }}^.... | 0:00 | 0 | |
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| 2024-09-27 | Mention the products formed in the following“Chlorine gas is bubbled through a solution of.... | 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 | The green colour produced in the borax bead test of a chromium (III) salt is due to.... | 0:00 | 0 | |
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| 2024-09-27 | A metal nitrate reacts with KI solution to give yellow precipitate which on addition of exc.... | 0:00 | 0 | |
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| 2024-09-27 | Two parallel plate capacitors of capacitances C and 2C are connected in parallel and charged to .... | 0:00 | 0 | |
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