WBJEE 2023 CHEMISTRY Question Paper Solution in Bangla 🔥| WBJEE Latest Paper |

hello students welcome to PW Bangla tomorrow solo first questions the correct order of boiling points of n ethyl ethanamine ethoxyethane and butane to all is 32 put out some of this number one compound start foreign number two erector compound key butane to all right secondary alcohol boiling point um boiling point distinguished extent of hydrogen bonding hydrogen bonding boiling points no age bonding title no age bonding boiling points foreign so a secondary I mean among secondary alcohol secondary alcohol money boiling point I mean next question is foreign the pH foreign c p a c h is double bond c h p o h t o two h is phantaphas foreign foreign Palomino um next question the correct order of acidity of the above compounds is the substituted phenylugular acidity order and acid reorder is a Johto basic electron withdrawing group Third Way that with electron withdrawing power base electron density electron density is [Music] foreign foreign [Music] foreign foreign AC H3 grouper plus e is hyper conjugation among plus I effect s a electron density push query money electron density Arrow path electron donate quarter electron density donated electron deficient wage foreign foreign acidity or a charge so about Teen age next question now a reaction a Y and Z key when x y and Zeta identified bromine in presence of acetic acid reactions foreign hello form reaction among haloform reactions replace or acetic acid IC acid sodium salt of acetic acid ultimate products ETA y ETA Z model s correct answer next question is all the nucleophilic substitution reactions at saturated carbon atoms in the above sequence of the reaction follow sn2 mechanism then E and F will be respectively degree alkyl halide is no CA is three eight ch2 anyway foreign I'm use this thank you foreign all right buddy excellent foreign foreign on a nucleophile into Uno change configuration substrated change or configuration configurations foreign foreign sit outside which is a configuration um [Music] sorry option data correct sorry I mean r or enter yes next question two base balls having masses X Program among punches gram are thrown both of them are thrown both of them move with uniform velocity but the velocity of M two is one point five times that of M one the ratio of the deep broccoli wavelength of a Young D blockly wavelength e Lambda 1 I mean velocity of V1 Lambda 2 m 2 V 2. Lambda 1 age by 100 into velocity foreign Lambda 1 by Lambda 2 foreign into V1 8 3x4 right though foreign Lambda 1 is 2 Lambda 2 p is 2 4 correct answer next question what is the age length of the unit cell of a body centered cubic Crystal of an element whose atomic radius is 75 picometer atomic radius 4r foreign [Music] foreign foreign foreign at a given temperature when the temperature is doubled the X two molecules dissociated completely into atoms the root mean Square speed of the sample of gas then becomes therefore root means Square speed volt terminal root mean square feet x equal to key root over three RT by m um x two molecules completely into atoms thali act takes two molecule x two molecule UD foreign title is crms Johan 3rd my temperature atomic mass foreign X 2 into x minus two x is the correct answer next question therefore arrange the following in order of increasing Mass where one mole of nitrogen one mole of nitrogen money when a molar mass of nitrogen 32 one mole of nitrogen molar mass of nitrogen there are one mole of nitrogen money one mole of nitrogen money molar mass of nitrogen terminal Direction 28 gram 0.5 mole of ozone ozone yeah o three photo one mole of O three one actually gram s is 0.5 mole of O three money 24 gram 3.011 into 10 to the power twenty three molecules of o two masks Avogadro number of molecules of o two things of o two minus 6.022 to 10 to the power twenty three molecules of oxygen O2 mosquito 32 gram right though is a three point zero one one two ten to the power 23. 16 gram take a second you know 0.5 gram atom of o2 one gram atom of o2 atomic mass of o2 one gram atom money one gram atom money atomic mass of oxygen someone he 16 gram atoms atomic mass of 0.5 grammar atom of o two one speaks tin into 0.5 8 gram um Theta 2 ETA three ETA 4. foreign which of the following would give a linear plot linear plot one is straight line toward the formula rate constant is equations minus E A by RT 3 question temperature is exponentially foreign foreign foreign foreign m equal to minus E A by r figures correct answer intercepts [Music] PV diagram the next question the equivalent conductance of NaCl HCL and sodium acetate at infinite dilution equivalence conductance acetic acid equivalent conductance at infinite dilution acetic acid at infinite dilution a conductance Lambda 0 to D at infinite dilution sodium acetate Judy uh equivalence conduct and so on is HCL at Kodi huh is acetic acid equivalence conductance at infinite dilution foreign point 45 degrees Judy deco now 71 honey for the reaction a b and c we have the following data the order of the reaction with respect to A and B are tickets rate of the reaction a X V to the power y because X Plus y equals x n y is World Order of the action is the initial concentration of a joke foreign the F number equation to react number situation rate initial rate of the reaction rate constant air value a value of one another one to the power x are b s atin 10 to the power y figures situation K into one to the power x 1 to the power why but in numbers situation air concentration of say 10 to the power x foreign by at a into 1 to the power x 10 to the power y ATA k 1 to the power y um x 1 to the power x so cancel out 10 square 10 to the power why your values a bar two by three um one by 10 equal to k into 1 to the power x 1 to the power y K into 10 to the power x 1 to the power y your y a values so because one by ten equal to 1 by 10 to the power x foreign a to the power 1 or B to the power key of A two um the first order with respect to a and second order with respect to B number option of the correct answer next question the equivalence weight of potassium iodate foreign foreign foreign foreign foreign foreign foreign foreign [Music] foreign M by six correct answer next question at STP the dissociation reaction of water is H2O and H Plus or o h minus and the pH of water which is seven the change of standard fee energy money gives free energy for the above dissociation process is given by the however water foreign because ever J2 KW equal to K into h 2 um standard gives free energy Delta G is zero minus 2.303 r into t to log k is foreign Peak into ah into p k w Corona pkw monarchy minus of log k w ow minus of log of h plus into o h minus title release foreign [Music] foreign foreign 2.303 into RL value foreign foreign nine zero nine one calorie options sodium carbonate is prepared by Solvay process but K two Co through CO3 when a potassium carbonate cannot be prepared by the same because soluble precipitate precipitated if in case of a radioisotope the value of Half-Life T half and Decay constant are identical in magnitude then their value should be here uh of life among Decay constant so radioactive money radioactive reactions order follow order related foreign Lambda even Lambda is a half life Lambda equal to Half Life half Square equal to which is six zero point six nine three thousand T half zero point six nine three dollar eight hours correct answer next question suppose the gaseous mixture of helium neon argon and Krypton is treated with photons of the frequency appropriate to ionize with argon What ions will be present in the mixture foreign foreign umrah is new management energy money frequency or better energy is Neon helium neon energy levels foreign foreign foreign ah atmosphere the molar mass of the polymer in gram Perma the osmotic pressure pi into PRT they're going to see concentration of the solute basically molarity one and covalent compound ionized pi equal to CRT title foreign title four liter into foreign 0.08206 into 300 by 3 into 10 to the power minus 4 calculator so let approximately approximately molar mass next question chemical warnings okay the molecular shapes of sf4 cf4 and XC F4 are you guys foreign foreign [Music] foreign foreign atom due to axial position occupied are trigonal planar the interposition is already foreign foreign sp3 hybridization sp3 hybridization tetrahedral structure cf4 structures foreign foreign atoms Uno positive but negative charge static number six one sp3 D2 hybridization sp3 D2 hybridization octahedral structure foreign foreign actor axial position s Square planner shape options foreign [Music] foreign sorry ah um SP hybridization SP hybridization correct answer next question is coordination the correct statement about the magnetic properties of hexa cyano ferric anion money exercise three eduto complexer magnetic property by magnetic Behavior cyanide key iron plus three oxidation plus three oxidation state erosion buddy tomorrow t2g money configuration t two G five e g zero one electron ICS sorry electron evaluation foreign [Music] foreign what's up next question the calculated spin only Magnetic Moment values in bore Magneton for a p c l four minus ifcl4 minus among AC c n c c n six three minus mean only Magnetic Moment mu equal to root over n into n plus two more magnitude number of unpaired electrons tetrahedral complex foreign sorry e two e two t two three parts foreign poor Magneto degrees for Fe c n whole six three minus height of it is foreign one point seven three two more magnetically aspects our next question BR F3 cell ionizes brf three cell ionization foreign foreign followed by four F three uh six s two three electrons electronic configurations for the next question which of the following statements is incorrect own statement VF v f six three minus is paramagnetic with two unpaired electron electrons probably bf6 V3 Plus V3 Plus old electronic configuration key argon followed by three D three four S two bar four S two Omega three D three four S two my name is three D two titles with one paired electrons so as number statement also correct foreign what Cobalt hexamine three plus complex and a hexamine Cobalt three complex is diamagnetic energy Cobalt 3 plus D6 configuration D6 configuration where octahedral complex ever amine money ammonia electronic configuration four and AEG 0 t 2 G 6 is electronic configuration Electronics three minus is paramagnetic with two unpaired electrons foreign due to unpaired electrons due to unpaired electrons into two with two unpaired electrons on D6 configuration D6 configuration among High spin complex t two G four e g two a configuration foreign foreign b n bond order of the inversely proportional to inversely proportional to bondless 18 days foreign in a home paper title foreign thank you foreign foreign either of the two resonance foreign [Music] a CO on a carbonyl group is foreign order tickets airport a decrease foreign Bond length foreign foreign for Nitro benzaldehyde tigers no foreign nitrogen ability acetophenone Nitro acetophenol CEO CA is three well calculated therefore the molecule in which in which all the atom May lie on the single plane when a planar planar uh foreign foreign current foreign foreign name very easy yes he got it together foreign Ethylene is mute to enal correct answer one next question the correct stability order of the following carbocations is [Music] foreign [Music] foreign foreign take it though electron deficient species foreign foreign effect possessing group tickets of nme2 is greater than plus M effect of ome group s foreign three four three four one two three options tickets relationships the relationship between the pair of compounds shown above are respectively um foreign [Music] configuration foreign whatever subscribe it is configuration hydrogen horizontal line Adventure preference priority wise one two three clockwise configuration title due to es configuration due to do the same configuration data roaches France so let's see Strong's isomerismatrical isomer among geometrical isomar Google node Mirror Image relationship tahole key option three to have a correct first relationships of the reactions is [Music] foreign [Music] carboxylic acid point is Pikachu a chromium chromic oxide in presence of h plus a chromic oxide foreign foreign foreign C ETA among ethanol foreign hello options butanoic acid power title is foreign sorry C ah C Double O CH 2 c h two c h three pH two p h two here is three the ages medium a hydrolysis coding attack numbers acid followed by Earth propanol tractor primary alcohol is to omic oxide in presence of acid medium due the oxidized propanoic acid primary alcohol aldehyde oxidize foreign Toyota huh so it is title Plus there are two degree alcohol two degree alcohol in presence of chromic oxide h plus a ketone so folic a two degree alcohol try two degree alcohol what's up next question well the case one and ideal gas of molecular weight M at temperature T another ideal gas of molecular weight 2 m at temperature T by two identify the correct statement in the constant context of the above two cases because the case one voltage therefore ideal gas and molecular weight at temperature t foreign at temperature T by two degrees is average speed minus c bar average foreign foreign foreign c one bar title temperatures foreign by half um half of C1 foreign foreign probably t k at Missouri temperature a into T by two uh into three by two KT so temperatures kinetic energy Tau Channel average kinetic energy [Music] average kinetic energy let's next question was a 63 gram of a compound these are molecular weight volatility gram per mole uh was dissolved in 500 gram of distilled water the density of the resultant solution 1.126 gram per ml the molarity of the solution is uh Solutions density of the solution will be mass by volume many mass of the solution volume of the solution number of moles of solute kaito by volume of the solution in liter title they write the molarity formula molarity molarity density 1.126 gram per mole so density Solutions foreign 500 ah ml which 500 MLS the number of moles of solute by volume of solution in liter so it is 63. foreign of the solute the number of moles of solute workouts when a weight given of the solute by molar mass of the solute they should T by EXO ah Chubby's you have a volume of the solution in liters foreign see you guys next question foreign combines with ah a uni negative monodented ligand X to form a paramagnetic complex n i x four two minus the hybridization involved and the number of unpaired electrons present in the complex is four two minus the hybridization number of unpaired electrons magnetic property is a paramagnetic complex paramagnetic complex ion paired electrons nickel plus two oxidation state elevation plus two oxidation state money three D eight configuration X4 a complex star hydraulics foreign foreign amra um DSP hybridization foreign E4 T2 sorry E4 E4 t t 2 4 is on ever amigudi electronic e set of orbitals magnetic answer hmm number of unpaired electrons next question ultimately a product synthesis of the reaction is L not equal to m not equal to n foreign even though I mean benzoyl chloride benzonitride it Integrity I mean [Music] phenyl magnesium bromide is react code is foreign foreign [Music] foreign foreign Pikachu reactions benzoic acid benzene foreign foreign ammonia ammonia at 25 degree centigrade in H2O air foreign [Music] c u c n k c and the reactor cyanide foreign [Music] foreign alkaline kmno4 PhD here alkaline camera four digit code is foreign foreign they won't Podium salt of benzoic acid acidified hydrolysis ultimately acid um question which statements is or are applicable above critical temperature they were critical temperature gas is gas cannot be liquefied temperature a gas cannot be liquefied so later correct statement apply surface tension of a liquid is very high it has incorrect statement now critical temperature above critical temperature critical temperatures foreign service tension of a liquid is negligible or minimum second statement out incorrect third statement a liquid phase cannot be distinguished from a gas phase is foreign a liquid phase cannot be distinguished from a gas phase current overall system gaseous foreign statement foreign third statement data correct your voltage is density changes continuously with pressure and volume above critical temperature gaseous foreign correct next question which of the following mixtures Acts as buffer solution a buffer solution money buffer solution acidic buffer or acidic buffer High salt off weak acid and a strong base Plus weak acid you the equilibrium acidic buffer basically salt of weak base and and a strong acid a seat Plus weak base sodium acetate foreign nh4cl nh4cl salt of a weak base voltage ammonium hydroxide actor weak base is foreign foreign sodium acidity foreign foreign will remain in the reaction mixture will remain in the equilibrium reaction mixture ammonium chloride plus Amazon foreign foreign option correct option four voltage one is to two mole ratio one is to two mole ratio one mole acetic acid one mole in a way neutralization reactions acetic acidity foreign are correct only your next question an electron in the 5D orbital can be represented by the following a n l m values magnetic quantum numbers five times foreign foreign sorry plus one zero minus one minus two types option A ETA zero foreign the conversions that can be carried out by bromine in carbon tetrachloride is [Music] China into metabolism title when a ccl4 solvent is codina a reaction is widget reaction h v z reaction key rate phosphorus are bromine to economic Hindu CCL for solventry use hello carboxylic acid IC reaction reaction bromine ccl4 when c c l four K Omega solvent is so option one above option four are correct together foreign paper discussion session questions so thank you so much

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Length: 154min 58sec (9298 seconds)

Published: Mon May 01 2023