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Answers posted by sharmaaparna1

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(chatquestion)...with Hinsberg's R Reaction Pn co,u[Bene Nitrogen Compounds A compound (X) having the molecular С,Н.N abenzenesulphonyl chloride_to form a 11. 16. One mole of an a formula reacts with moles of methy quaternary ammo (A) is - (1) (CH,),CCH,NE CHinsbeog Reagent solid that is insoluble in alkalies. The compound (X) is - (1) CH,CH,CH,NH, (2)(CH,),CHNH, (3) (3) CH,CH,NHCH, (4) (CH,),N H. 12. Which one of the following will not Hinsberg's reage (1) Diethyl oxala 17. produced alkane with the Grignard
answered Feb 20, 2020
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(chatquestion)...Which will have minimum osmotic pressure? (A) 200 mL of 2M NaCl solution (C) 200 mL of 2M urea solution (B) 200 mL of 1 M glucose solution (D) All have same If electron affinity of Cl is 348 kJ/mol then how much energy is released to convert 1.0 gm Cl in Cl gas :- (A) 35.5 kJ (D) 3.2 kJ (C) 9.8 kJ (B) 17.7 kJ
answered Feb 20, 2020
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Solubility of carbon di oxide in water is high when
answered Feb 20, 2020
The solubility of the carbon dioxide in water increases as the temperature decreases.
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C5H12O excess HI forms two alkyl halide on hydrolysis gives B and C
answered Feb 20, 2020
https://clay6.com/qa/74654/an-ether-a-c-5h-o-when-heated-with-excess-of-hot-concentrated-hi-produc...
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in benzene there is delocalisation
answered Feb 19, 2020
Delocalized electrons are electrons in a molecule, ion or solid metal that are not associated with a...
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A solution of urea in water has a boiling point of 100.128 degree Celsius.C
answered Feb 19, 2020
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For reaction H2+I2~2HI the equilibrium constant kp chnges with
answered Feb 19, 2020
The equilibrium constant (Kp) for the reaction  $H_2(g) + I_2(g) \Rightarrow 2HI (g)$   ...
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flocculation value formula
answered Feb 19, 2020
“The minimum concentration of an electrolyte which is required to cause the coagulation or flocculat
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benzaldehyde reacts with alcoholic koh
answered Feb 19, 2020
$2C_6H_5CHO + KOH \Rightarrow  C_6H_5CH_2OH + C_6H_5COOK$.
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Calculate the freezing point of a solution containing 6.520gm of glucose in
answered Feb 19, 2020
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Standard hydrogen electrode is used as primary reference electrode even tho
answered Feb 19, 2020
A Standard Hydrogen Electrode (SHE) is an electrode that scientists use for reference on all half-ce...
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Calculate the molarity of h2so4 solution containing 9.8g of h2so4 per 500ml
answered Feb 19, 2020
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How many atom in Cu are present in 35.4g of cu? [Cu= 63.5gmol
answered Feb 19, 2020
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Picture question - chemistry
answered Feb 19, 2020
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Picture question - class 12 - chemistry
answered Feb 19, 2020
Scandium has one unpaired electron in the d-orbital. It is added to the 2 electrons of the s-orbital...
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Picture question - chemistry
answered Feb 19, 2020
clear image with question no. please
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the activation energy for a hypothetical reaction, a → product, is 12.49
answered Feb 19, 2020
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What happens when sodium chloride is heated with yellow phosphorus?
answered Feb 19, 2020
Please check your question Refer: When a mixture of yellow phosphorous and sodium hydroxide is hea...
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Picture question - class 12 - chemistry
answered Feb 17, 2020
Azeotropic mixtures are binary mixtures having same composition in liquid and vapour phase and boil ...
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(chatquestion)...(c)OWrite the symbolic notation for standard Hydrogen electrode. (i) At a definite temperature specific conductance of an aqueous solution of 0-001 (M) CH,COOH
answered Feb 17, 2020
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(chatquestion)...What is the action of conc. NaOH on methanal? What is the action of dilute alkali on ehanal? What is action of Br2 on ethanoic acid?
answered Feb 17, 2020
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(chatquestion)...Ionisation energy of element A are :- IE, 540 kJ/mol 47. IE, IE, 430 120 If A react with different elements, which compounds of A is not possible? (4) A,N, (3) A,N (2) A,0 (1) AF
answered Feb 17, 2020
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(chatquestion)...7. Which one of the following compounds will be most readily dehydrated? [2010] ОН (a) CH3 (b) CH; ОН (c) НаС ОН ОН (d) CH3
answered Feb 17, 2020
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(chatquestion)...Arrange the following compounds in order of decreasing rate of hydrolysis for S1 reaction (1) CH,-Br (m) Н,С CH,-Br (I) CH, - CH, CH,-Br CH, CH (IV) CH, CH,-Br (A) II > II > M>I (B) IV> Im > 1I > I (C) II > V> l >I (D)I > n> m > V...(Anyone)
answered Feb 17, 2020
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(chatquestion)...14. Identify A and predict the type of reaction OCH, NaNH, Br OCH3 and substitution reaction (a) NH2 OCH3 NH2 and elimination addition reaction (b) OCH3 Br and cine substitution reaction OCH3 and cine substitution reaction (d) (c)
answered Feb 17, 2020
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Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is :
answered Feb 17, 2020
IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid
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(chatquestion)...09. Three moles of an ideal gas expanded spontaneously in to vaccum. Then which is correct? L> Peat =0, W=d (Pd) (1) @ = 0, AG = 0 %3D %3D (2) @ = 0, AG<0 %3D (3) @ = 0, AG > 0- (4) @ # 0, AG = 0 %3D
answered Feb 14, 2020
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(chatquestion)... Calculate the amount of KCl which must be added to 1kg of water so that the freezing point is depressed by 2k? (kf for water = 1.86Kmol−1)
answered Feb 14, 2020
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(chatquestion)...(3) 20 K for A(g)+ B(g) 3C(g) is 30 at 298 K. If a two litre vessel contains 1, 2 and 5 moles of A, B and C respectively, the reaction at 298 K shall 30 (1) Proceed from left to right (2) Proceed from right to left (3) Be at equilibrium (4) Can't be predicted 3r 21 In the eguilibrium
answered Feb 14, 2020
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(chatquestion)...4V2 43 Which of the following defects is also known as dislocation defect? 43 a. Frenkel defect b. Schottky defect c. Non-stoichiometric defect d. None of the above 44 Which of the following will have metal 4. deficiency defect? a) NaCl b Fe0 c) KCI d) Zno The distance between Nat and Cl-ions in NaCl with density 3.165g/cm³ is 497pm þ) 248.5pm A 234pm d) 538.5pm 45 The below figures show - 46 CH, CH, H. mente...(45 plz do it I'm not able to solve it calculation
answered Feb 14, 2020
https://clay6.com/qa/98238/calculate-the-distance-between-na-and-cl-ion-in-nacl-crystal-of-its-den...
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Al Crystallises fcc and it has a density of 2.7*10^3 kg/m^3. Caclculate the
answered Feb 14, 2020
https://clay6.com/qa/155076/aluminium-crystallises-as-fcc-lattice-and-it-has-a-density-of-2-7-10-3...
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(chatquestion)...The value of vander waal's constant a and b for two gases X and Y are 4.6, 0.04 (for X) and 5.1, 0.06 (for Y). Which can be liquified easily an application of pressure :- (1) X (2) Y (3) Both 1 & 2 (4) None of these
answered Feb 13, 2020
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Arrhenius equation-rateconstant and activation energy
answered Feb 12, 2020
The Arrhenius equation is a formula for the temperature dependence of reaction rates. $k = Ae^{\fra...
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What is the roleof diffusion in heterogenous catalysis
answered Feb 12, 2020
In Heterogenous catalysis the gas molecules diffuse onto the surface of the catalyst and get absorbe...
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(chatquestion)...A large proportion of oxygen is left unused the human blood even after its uptake by the body tissue. This O, [AIPMT(Pre.) 2011] (1) Helps in releasing more O, to the epithelium tissues (2) Acts as a reserve during muscular exercise (3) Raises the pCO, of blood to 75 mm of Hg (4) Is enough to keep oxyhaemoglobin tansukh paliwal saturation at 96%
answered Feb 12, 2020
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(chatquestion)...Mulupie CNOICE Questions: Q. 1. When 0.1 mol CoCla(NH)5 is treated with excess ons no of AgNO3, 0.2 mol of AgCl are obtained. The conductivity of solution will correspond to (a) 1:3 electrolyte. bab (c) 1:1 electrolyte. (d) 3:1 electrolyte. v (b) 1:2 electrolyte. 1201
answered Feb 12, 2020
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The basic component of smog is??
answered Feb 12, 2020
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(chatquestion)...From the following molar conductivities at infinite dilution, 6. A for Al,(SO,), = 858 S cm? mol-1 Am for NH,OH = 238.3 S cm? mol-1 Am for (NH,),SO, = 238.4 S cm? mol-1 %3D Calculate A for AI(OH)3
answered Feb 12, 2020
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Which one of the following statements regarding photochemical smog is not correct ?:
answered Feb 12, 2020
Photochemical smog does not cause irritation in nose eyes and throat.
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(chatquestion)...-mpared (3) [Co (NH)4 Cl,JCI (4) [Co (en),Cl,JCI Out of the following which complex will show geo (1) (3) L 64, +3 metrical isomerism ? 3 (1) [Pt(NH,),Cl,] (3) Na [Ni(CN),] 13. WH ge (2) Ni(CO), (4) K[Ag(CN),) 3/2 only' vith a х? acig Which of the following complexes will show opti- cal isomerism ? (1 65 (1) [Cr(NH,),P- (3) [Pt(NH,),Br]NO, (2) [Ni(H,0),JP* (4) [Cr(en),JCl, 74 exes ion 66 The compound (Cr(H,0),JCI, and procont ISE.P65...(Q.65 please solve it with reason please)
answered Feb 11, 2020
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(chatquestion)...DEmpies Copper has an FCC structure and the atomic radius is 1.278A. Calculate the density of copper crystal. Given atomic weight of copper as 63.5g and Avogadro's number of 6.02 X 10. Calculate the density of the atom. Calculate the number of atoms per unit call and predict the crystal structure of the metal which has a lattice parameter of 2.9A and density of 7.9g/cm'. The atomic weight is 55.85 and the Avogadro's constant is 6.023 X 1023
answered Feb 11, 2020
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Which one of the following is a mineral of iron ?
answered Feb 11, 2020
Cassiterite - $SnO_2$Pyrolusite - $MnO_2$Magnetite - $Fe_3O_4$Malachite - $CuCO_3.Cu(OH)_2$Mineral o...
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Picture question - class 12 - chemistry
answered Feb 11, 2020
Question No. Please
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Which of the following statements is not valid for oxoacids of phosphorus ?
answered Feb 11, 2020
Hypophosphorous acid is a diprotic acid is not valid because Hypophosphorous acid is a monoprotic ac...
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Which of the statements is not true ?
answered Feb 11, 2020
( A ) $Na_2Cr_2O7$ is preferred over $ K_2Cr_2O_7$ in Volumetric analysis is not true
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Which one of the following statements is incorrect about enzyme catalysis ?
answered Feb 10, 2020
Enzymes are least reactive at optimum temperature is incorrect becauseAt optimum temperature$(25-35^...
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Which of the following species contains three bond pairs and one lone pair around the central atoms ?
answered Feb 10, 2020
$PCl_3$ has three bond pair and one lone pair
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(chatquestion)...Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H ion concentration in the mixture? (b) 1.11 x10 3M (d) 3.7 x10 M (a) 3.7 x10 3M (c) 1.11 x10 4M [Ans. (d) ] 10-4M ut1-10 M for the...(Ans is coming out to be b)
answered Feb 10, 2020
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(chatquestion)...The ionisation constant of NH in water is 5.6 x 100 25°C. The rate constant of the reaction of NH and OH to form NH, and H,O at 25°C is 3.4 x 100 L mols. The rate constant for proton transfer from water to NH is: (a) 6.07 x10 s! (c) 6.07 ×10S1 at (b) 6.07 x10-10 (d) 6.07 x1010s
answered Feb 10, 2020
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Which of the following is heavy water (a) H2o (b) D20 (c) T2o (d) water at
answered Feb 10, 2020
Heavy water is a form of water that contains a larger than normal amount of the hydrogen isotope deu...
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