| 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 | An aromatic compound ' \\(A\\) ' on treatment with \\(CHCl _3\\) and \\(KOH\\) gives two compoun.... | 0:00 | 2 | |
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| 2024-09-27 | Answer the following questions on the basis of the given figure :\n\nWhat is coagulation ?.... | 0:00 | 3 | |
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| 2024-09-27 | Calculate the number of unpaired electrons in the following gaseous ions :\\[Mn ^{3+} \\text { a.... | 0:00 | 1 | |
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| 2024-09-27 | (a) Derive an expression for the induced emf developed when a coil of N turns, and area of .... | 0:00 | 2 | |
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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 | The total number of moles of chlorine gas evolved 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 | Out of 2 -Bromopentane and 1 -Bromopentane which one is optically active and why?.... | 0:00 | 2 | |
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| 2024-09-27 | In cold conditions, aniline is diazotized and then treated with \\(N , N\\)-dimethylaniline to g.... | 0:00 | 1 | |
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| 2024-09-27 | The ore having two different metal atoms is.... | 0:00 | 4 | |
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| 2024-09-27 | Write the relation between the height of a TV antenna and the maximum range up to which signals .... | 0:00 | 5 | |
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| 2024-09-27 | The proiection of the vector \\(\\hat{i}-\\hat{i}\\) on the vector \\(\\hat{i}+\\hat{i}\\) is __.... | 0:00 | 2 | |
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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 | 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 | Write the Freundlich adsorption isotherm at (I) low pressure, and (II) high pressure..... | 0:00 | 1 | |
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| 2024-09-27 | The area of the equilateral triangle, in which three coins of radius \\(1 \\mathrm{~cm}\\) are p.... | 0:00 | 1 | |
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| 2024-09-27 | All the lanthanoids show +3 as the common oxidation state, yet \\(Ce\\) shows +4 state because.... | 0:00 | 3 | |
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| 2024-09-27 | Among all the isomers of molecular formula \\(\\mathrm{C}_4 \\mathrm{H}_9 \\mathrm{Br}\\), ident.... | 0:00 | 2 | |
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| 2024-09-27 | Calculate the mass of ascorbic acid (Molar mass =176 g mol-1) to be dissolved in 75 g .... | 0:00 | 2 | |
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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 | Give reasons for the following:CH2=CH– is more basic than HC≡C–..... | 0:00 | 1 | |
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| 2024-09-27 | Arrange the following compounds in the increasing order of their property indicated : (Any two)(.... | 0:00 | 1 | |
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| 2024-09-27 | Letα ∈ R. Prove that a functionf : R → R is diffe.... | 0:00 | 0 | |
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| 2024-09-27 | A sodium salt of an unknown anion when treated with MgCl2 gives white precipitate only on boilin.... | 0:00 | 3 | |
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| 2024-09-27 | How does an increase in doping concentration affect the width of depletion layer of a p-n juncti.... | 0:00 | 1 | |
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| 2024-09-27 | Give the structures of final products expected from the following reactions :.... | 0:00 | 1 | |
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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 | Draw the resonating structures of\n.... | 0:00 | 0 | |
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| 2024-09-27 | Choose the primary amine from the following compounds :\nC2H52CHNH2,C2H52NH,CH33N.... | 0:00 | 1 | |
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| 2024-09-27 | IfG(x)=−25−x2, thenlimx→1 G(x)−G(1)x−1 has the value.... | 0:00 | 0 | |
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| 2024-09-27 | Hydrogenation of benzoyl chloride in the presence of \\(\\mathrm{Pd}_{\\text {on }} \\mathrm{BaS.... | 0:00 | 1 | |
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| 2024-09-27 | (a) Use Kirchhoff's rules to obtain the balance condition in a Wheatstone bridge.\n(b) Explain w.... | 0:00 | 3 | |
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| 2024-09-27 | Name the carbohydrate used as storage molecule to store energy in animals..... | 0:00 | 2 | |
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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 | 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 | What type of liquids form ideal solutions ?.... | 0:00 | 4 | |
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| 2024-09-27 | \\(a_{12}=\\).... | 0:00 | 0 | |
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| 2024-09-27 | Give a chemical test to distinguish between methanol and ethanol..... | 0:00 | 5 | |
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| 2024-09-27 | Find the value of \\(\\int_1^4|x-5| \\mathrm{d} x\\)..... | 0:00 | 0 | |
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| 2024-09-27 | The effective capacitance of three capacitors of the same capacitance connected in series is \\(.... | 0:00 | 0 | |
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| 2024-09-27 | At a given instant there are25% undecayed radioactive nuclei in a sample. After10 s the num.... | 0:00 | 1 | |
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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 | IfCr stands for Crn, then the sum of the series2n2!n2!n!C02-2C12+3C22-…+(-1)n(n+1)Cn2,whe.... | 0:00 | 1 | |
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| 2024-09-27 | The final solution contains.... | 0:00 | 2 | |
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| 2024-09-27 | An organic compound \\(\\left(\\mathrm{C}_8 \\mathrm{H}_{10} \\mathrm{O}_2\\right)\\) rotates pl.... | 0:00 | 3 | |
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| 2024-09-27 | Will the rate constant of the reaction depend upon T if the Eact  (activation energy) .... | 0:00 | 1 | |
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| 2024-09-27 | Vitamin \\(\\mathrm{B}_{12}\\) is also called :.... | 0:00 | 1 | |
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| 2024-09-27 | A train is moving along a straight line with a constant acceleration a. A boy standing in the tr.... | 0:00 | 6 | |
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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 | From the solution containing copper (+2) and zinc (+2) ions, copper can be selectively precipita.... | 0:00 | 1 | |
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| 2024-09-27 | The compound N is.... | 0:00 | 1 | |
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| 2024-09-27 | Photobromination of 2-methylpropane gives a mixture of 1-bromo- 2-methylpropane and 2-bromo-2-me.... | 0:00 | 1 | |
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| 2024-09-27 | Write the preparation of the following:\\(\\mathrm{Na}_2 \\mathrm{Cr}_2 \\mathrm{O}_7\\) from \\.... | 0:00 | 5 | |
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| 2024-09-27 | Which is the most common oxidation state in Lanthanoids ?.... | 0:00 | 1 | |
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| 2024-09-27 | tpugty2d81iazn2a0l6vnltvn.... | 0:00 | 2 | |
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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 | Read the following questions and answer as per the direction given below:\nStatement-I: A very d.... | 0:00 | 1 | |
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| 2024-09-27 | Following reaction gives two products. Write the structures of the products.CH3CONHC6H5→Br.... | 0:00 | 1 | |
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| 2024-09-27 | Write the formulae of the following complexes:(i) Pentamminechlorocobalt (III) ion(ii) Lithium t.... | 0:00 | 0 | |
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| 2024-09-27 | Which of the following solutions of \\(KCl\\) will have the highest value of molar conductivity?.... | 0:00 | 1 | |
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| 2024-09-27 | If Cr(n-1)=k2-3nCr+1, then k belongs to.... | 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 | Name the heterogeneous catalyst used in the polymerisation of ethylene..... | 0:00 | 0 | |
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| 2024-09-27 | Answer by appropriately matching the lists based on the information given in the paragraph List-.... | 0:00 | 0 | |
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| 2024-09-27 | How many unpaired electrons are present in Ni2+?.... | 0:00 | 0 | |
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| 2024-09-27 | The conversion of an alkyl halide into an alkene by alcoholic \\(KOH\\) is classified as .... | 0:00 | 1 | |
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| 2024-09-27 | Chlorobenzene can be prepared by reacting aniline with.... | 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 | 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 | Which of the following compounds is oxidised to prepare methyl ethyl ketone?.... | 0:00 | 2 | |
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| 2024-09-27 | Argon is used in arc welding because of its.... | 0:00 | 0 | |
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| 2024-09-27 | Name the molecular geometry of \\(XeOF _4\\)..... | 0:00 | 1 | |
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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 | 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 | Which of the following has the most acidic hydrogen?.... | 0:00 | 0 | |
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| 2024-09-27 | EDTA4– is ethylenediaminetetracetate ion. The total number of N—Co—O bond angl.... | 0:00 | 0 | |
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| 2024-09-27 | Give reasons in two or three sentences only. Sulphur dioxide is a more powerful reducing agent i.... | 0:00 | 1 | |
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| 2024-09-27 | Give one chemical test to distinguish between the following :(a) Phenol and 1-propanol.... | 0:00 | 0 | |
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| 2024-09-27 | One of the constituent of German silver is.... | 0:00 | 1 | |
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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 mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives.... | 0:00 | 1 | |
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| 2024-09-27 | Complete and balance the following reaction. Red phosphorus is reacted with iodine in the presen.... | 0:00 | 0 | |
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| 2024-09-27 | Among the following, the number of compounds that can react with PCl5 to give POCl3 is O2, CO2, .... | 0:00 | 0 | |
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| 2024-09-27 | Write the formula of Pentaamminechloridocobalt (III) chloride..... | 0:00 | 3 | |
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| 2024-09-27 | The thermal dissociation of equilibrium of CaCO3(s) is studied under different conditions.CaCO3(.... | 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 | 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 | The empty space in this hep unit cell is.... | 0:00 | 1 | |
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| 2024-09-27 | In the reaction, P+Q→R+S, the time taken for 75 % reaction of P is twice the time talen for.... | 0:00 | 1 | |
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| 2024-09-27 | Write one difference between order and molecularity of a reaction..... | 0:00 | 2 | |
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| 2024-09-27 | The ratio of the energy of a photon of 2000A0 wavelength radiation to that of 4000A0 radiation i.... | 0:00 | 1 | |
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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 | The reaction(s) leading to the formation of 1, 3, 5-trimethylbenzene is (are).... | 0:00 | 2 | |
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| 2024-09-27 | Sunlight of intensity1.3kWm-2 is incident normally on a thin convex lens of focal length 20cm. I.... | 0:00 | 0 | |
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| 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 | In the graphs below, the resistanceR of a superconductor is shown as a function of its temperatu.... | 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 | Calculate the amount of calcium oxide required when it reacts with 852 g of P4O10..... | 0:00 | 1 | |
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| 2024-09-27 | Light travels as a.... | 0:00 | 0 | |
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