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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
If 1 mole of NaCl is doped with 10^-3 mole of SrCl2, what is the number of cationic vacancies per mole of NaCl? |
| Answer» If 1 mole of NaCl is doped with 10^-3 mole of SrCl2, what is the number of cationic vacancies per mole of NaCl? | |
| 202. |
46. Molarity of Cl- when equal volume of 0.5 M AgNO3 and 0.5 M NaCl solution are mixed |
| Answer» 46. Molarity of Cl- when equal volume of 0.5 M AgNO3 and 0.5 M NaCl solution are mixed | |
| 203. |
Question 07 Two atoms are said to be isobars if ? (a) They have same atomic number but different mass number (b) They have same number of electrons but different number of neutrons (c) They have same number of neutrons but different number of electrons (d) Sum of the number of protons and neutrons is same but the number of protons is different |
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Answer» Question 07 Two atoms are said to be isobars if ? (a) They have same atomic number but different mass number (b) They have same number of electrons but different number of neutrons (c) They have same number of neutrons but different number of electrons (d) Sum of the number of protons and neutrons is same but the number of protons is different |
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| 204. |
Assertion: Schottky defect doesn’t have any effect on density of crystal. Reason: Equal no. of cations and anions missing from the Lattice Points. |
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Answer» Assertion: Schottky defect doesn’t have any effect on density of crystal. Reason: Equal no. of cations and anions missing from the Lattice Points. |
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| 205. |
How mass of something depends upon velocity? Is there any formula? |
| Answer» How mass of something depends upon velocity? Is there any formula? | |
| 206. |
Which is more stable potassium hydrogen carbonate or calcium hydrogen carbonate ? |
| Answer» Which is more stable potassium hydrogen carbonate or calcium hydrogen carbonate ? | |
| 207. |
Maximum pH will be:- |
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Answer» Maximum pH will be:- |
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| 208. |
how to decide rds in complex reaction |
| Answer» how to decide rds in complex reaction | |
| 209. |
For the given reaction :Major product (Y) is : |
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Answer» For the given reaction : |
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| 210. |
The nitration of benzene is: |
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Answer» The nitration of benzene is: |
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| 211. |
At pH=2, EQuinhydrone will be (EQuinhydrone=1.30 V) [Assume that the concentration of hydroquinone and quinone is 1 M]QH2→Q+2H++2e−, where QH2 and Q stand for hydroquinone and quinone respectively. (Given, 2.303RTF=0.06) |
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Answer» At pH=2, EQuinhydrone will be (EQuinhydrone=1.30 V) [Assume that the concentration of hydroquinone and quinone is 1 M] QH2→Q+2H++2e−, where QH2 and Q stand for hydroquinone and quinone respectively. (Given, 2.303RTF=0.06) |
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| 212. |
Statement −I:–––––––––––––––––– The canonical forms have no real existence Statement −II:–––––––––––––––––––– There is no equilibrium between canonical forms Statement −III:––––––––––––––––––––– The energy of the resonance hybrid is less than the energy of any single canonical structure Statement −IV:–––––––––––––––––––– The molecule does not exist for a certain fraction of time in one canonical form and for other fraction of time in other canonical form Correct statements is / are |
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Answer» Statement −I:–––––––––––––––––– The canonical forms have no real existence Statement −II:–––––––––––––––––––– There is no equilibrium between canonical forms Statement −III:––––––––––––––––––––– The energy of the resonance hybrid is less than the energy of any single canonical structure Statement −IV:–––––––––––––––––––– The molecule does not exist for a certain fraction of time in one canonical form and for other fraction of time in other canonical form Correct statements is / are |
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| 213. |
15. The radio active " Sr that is formed due to nuclear explosion has half life { period of 28.1 years. In the body of a child born at this time 90Sr is found to { be 10^{-6 gram, then what will be ^{90Sr destroyed from the body of child when the { age of the child will be 30 years. |
| Answer» 15. The radio active " Sr that is formed due to nuclear explosion has half life { period of 28.1 years. In the body of a child born at this time 90Sr is found to { be 10^{-6 gram, then what will be ^{90Sr destroyed from the body of child when the { age of the child will be 30 years. | |
| 214. |
find the equivalent weight of K2S04.AL2[SO4].24H2O |
| Answer» find the equivalent weight of K2S04.AL2[SO4].24H2O | |
| 215. |
A drop of olive of radius 0.25mm spreads in to a circular film of radius 5 cm on the water surface. Estimate the molecular size of the olive oil |
| Answer» A drop of olive of radius 0.25mm spreads in to a circular film of radius 5 cm on the water surface. Estimate the molecular size of the olive oil | |
| 216. |
The ionization energy of sodium is 495 kJ/mol. How much energy in joules is needed to convert atoms present in 2.3 mg of sodium into sodium ions? |
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Answer» The ionization energy of sodium is 495 kJ/mol. How much energy in joules is needed to convert atoms present in 2.3 mg of sodium into sodium ions? |
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| 217. |
When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]2− , MnO2 ,Mn2O3, [Mn]2+ ,then the number of electrons transferred in each case respectively is |
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Answer» When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]2− , |
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| 218. |
Draw Fischer projections for the following SN2 substitution reaction: |
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Answer» Draw Fischer projections for the following SN2 substitution reaction: |
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| 219. |
Hinsberg's reagent is |
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Answer» Hinsberg's reagent is |
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| 220. |
Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1 |
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Answer» Calculate the mass of sodium acetate (CH3COONa) required to make 500 mL of 0.375 molar aqueous solution. Molar mass of sodium acetate is 82.0245 g mol–1 |
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| 221. |
what is large and small distance? |
| Answer» what is large and small distance? | |
| 222. |
The equivalent mass of H3BO3 (M = molar mass of H3BO3) in its reaction with NaOH to form Na2B4O7 is equal to |
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Answer» The equivalent mass of H3BO3 (M = molar mass of H3BO3) in its reaction with NaOH to form Na2B4O7 is equal to |
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| 223. |
Why small gaps are left between concrete roads? |
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Answer» Why small gaps are left between concrete roads? |
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| 224. |
Which among the following is true for radial probability distribution curve? |
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Answer» Which among the following is true for radial probability distribution curve? |
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| 225. |
initially point object of mass 2M is at A, Mass M is at 0 (origin) and mass 3M at B. Now 2M is placedat O and M at A. The new position of point object of mass 3M so that there is no change in positionof centre of mass of the system relative to origin O. |
| Answer» initially point object of mass 2M is at A, Mass M is at 0 (origin) and mass 3M at B. Now 2M is placedat O and M at A. The new position of point object of mass 3M so that there is no change in positionof centre of mass of the system relative to origin O. | |
| 226. |
Ina periodic table the average atomic mass of magnesium is given as24.312 u. The average value is based on their relative naturalabundance on earth. The three isotopes and their masses are(23.98504u),(24.98584u)and (25.98259u).The natural abundance of is78.99% by mass. Calculate the abundances of other two isotopes. |
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Answer» In |
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| 227. |
8. The mass of N2F4 produced by the reaction of 1 mole of Nh3 and 2.5 mole of F2 is 35.6 g. Hence,the percentage yield of the given reaction is? |
| Answer» 8. The mass of N2F4 produced by the reaction of 1 mole of Nh3 and 2.5 mole of F2 is 35.6 g. Hence,the percentage yield of the given reaction is? | |
| 228. |
A gas expands from a volume of 3.0 dm3 to 5.0 dm3 against a constant pressure of 3.0 atm the work done during expansion is used to heat 10.0 mole of water of temperature 290.0 K Calculate the final temperature of water (specific heat of water =4.184 JK−1g−1) |
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Answer» A gas expands from a volume of 3.0 dm3 to 5.0 dm3 against a constant pressure of 3.0 atm the work done during expansion is used to heat 10.0 mole of water of temperature 290.0 K Calculate the final temperature of water (specific heat of water =4.184 JK−1g−1) |
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| 229. |
Aniline reacts with acetaldehyde to form |
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Answer» Aniline reacts with acetaldehyde to form |
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| 230. |
When a beam of photons with energy (10.62 V) and intensity 20 W/m\ast2 falls on a platinum surface of area 1.0 x10 -4 m) and work function 5.6 eV, 0.53% of the incidentphotons eject photo electrons. Find the number ofphotoelectrons emitted per second and their minimum and maximum energies in ev)Take l eV 16 x 10-19 |
| Answer» When a beam of photons with energy (10.62 V) and intensity 20 W/m\ast2 falls on a platinum surface of area 1.0 x10 -4 m) and work function 5.6 eV, 0.53% of the incidentphotons eject photo electrons. Find the number ofphotoelectrons emitted per second and their minimum and maximum energies in ev)Take l eV 16 x 10-19 | |
| 231. |
The compound (A) is: |
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Answer» The compound (A) is: |
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| 232. |
Find X and y 2bx=a+b & x-y=0 |
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Answer» Find X and y 2bx=a+b & x-y=0 |
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| 233. |
If,find. |
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Answer» If |
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| 234. |
For a given reaction, ΔH = – 40.7 kJ mol–1 and ΔS = 74.2 JK–1 mol–1. The reaction is spontaneousOptions: Only below 548.5 K Only above 548.5 K At 548.5 K only At all temperature |
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Answer» For a given reaction, ΔH = – 40.7 kJ mol–1 and ΔS = 74.2 JK–1 mol–1. The reaction is spontaneous Options: Only below 548.5 K Only above 548.5 K At 548.5 K only At all temperature |
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| 235. |
In a crystal solid atom P+ are present at all octahedral voids and atom Q- form ccp lattice The nearest neighbor of P+ is X and the next nearest neighbor of Q- is Y then X/Y |
| Answer» In a crystal solid atom P+ are present at all octahedral voids and atom Q- form ccp lattice The nearest neighbor of P+ is X and the next nearest neighbor of Q- is Y then X/Y | |
| 236. |
{ The vapour pressure of }n -hexane at }350K is }840 torr }}{ and that of cyclohexane is }600 torr. Mole fraction of }}{ hexane in the mixture that boils at }350K and }1 atm }} pressure assuming ideal behaviour is |
| Answer» { The vapour pressure of }n -hexane at }350K is }840 torr }}{ and that of cyclohexane is }600 torr. Mole fraction of }}{ hexane in the mixture that boils at }350K and }1 atm }} pressure assuming ideal behaviour is | |
| 237. |
The pH of 0.05 M aqueous solution of diethyl amine is 12.0. Calculate Kb. |
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Answer» The pH of 0.05 M aqueous solution of diethyl amine is 12.0. Calculate Kb. |
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| 238. |
For a quarter ring of radius R, find the dis†an ce of centre of mass from centre of ring. |
| Answer» For a quarter ring of radius R, find the dis†an ce of centre of mass from centre of ring. | |
| 239. |
Solid balls of radius 17.32 cm crystallises in bec pattern, during one such crystallisation some oxygen gas is trapped. This trapped oxygen at 640K creates pressure of 5 atm Assume:(i) BCC arrangement is not disturbed due to trapping of gas.(ii) Gas is uniformly distributed inside unit cell\lbrack Take R 0.08 atm-litre/mole-K, N_a =6 x 10^{23}, Mass of a solid ball =64g. 1) Calculate number of oxygen molecules present in a unit cell 2) Calculate percentage increase in density due to trapping of ga |
| Answer» Solid balls of radius 17.32 cm crystallises in bec pattern, during one such crystallisation some oxygen gas is trapped. This trapped oxygen at 640K creates pressure of 5 atm Assume:(i) BCC arrangement is not disturbed due to trapping of gas.(ii) Gas is uniformly distributed inside unit cell\lbrack Take R 0.08 atm-litre/mole-K, N_a =6 x 10^{23}, Mass of a solid ball =64g. 1) Calculate number of oxygen molecules present in a unit cell 2) Calculate percentage increase in density due to trapping of ga | |
| 240. |
What is the pH of the solution when hydrogen ion concentration is 0.001 x 10^{-12}? |
| Answer» What is the pH of the solution when hydrogen ion concentration is 0.001 x 10^{-12}? | |
| 241. |
The amount of kcl in grams added to 1kg of water to lower it's freezing point to -8.0'c is (kf of water = 1.86) |
| Answer» The amount of kcl in grams added to 1kg of water to lower it's freezing point to -8.0'c is (kf of water = 1.86) | |
| 242. |
89 When Cu plate is dipped in a solution of CuSO4 its electrode potential was found to be zero volt at 25C. The conc. Of CuSO4 solution is ? |
| Answer» 89 When Cu plate is dipped in a solution of CuSO4 its electrode potential was found to be zero volt at 25C. The conc. Of CuSO4 solution is ? | |
| 243. |
what happens when the sodium potassium pump stops working?? |
| Answer» what happens when the sodium potassium pump stops working?? | |
| 244. |
12.Why oxidal BL is longer than equitoral BL in PCl5 |
| Answer» 12.Why oxidal BL is longer than equitoral BL in PCl5 | |
| 245. |
In chlorination the relation rate of abstraction of H in 3∘,2∘ and 1∘C atom respectively |
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Answer» In chlorination the relation rate of abstraction of H in 3∘,2∘ and 1∘C atom respectively |
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| 246. |
80 What is the structure of [Ni(gly)2] and of the red ppt formed when dmg is added to ammoniacal Ni(II) |
| Answer» 80 What is the structure of [Ni(gly)2] and of the red ppt formed when dmg is added to ammoniacal Ni(II) | |
| 247. |
Assuming nitrogen molecule of spherical shape with the radius 2A° ,the percentage of empty space in one mole of N2gas is taken |
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Answer» Assuming nitrogen molecule of spherical shape with the radius 2A° ,the percentage of empty space in one mole of N2gas is taken |
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| 248. |
Identify the reagent(s)/condition for the given conversion. |
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Answer» Identify the reagent(s)/condition for the given conversion. |
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| 249. |
For one mole of a Van der Waals gas when b=0 and T=300 K, the PVvs.1/V plot is shown below. The value of the Van der Waals constant a (atm L2 mol−2): |
Answer» For one mole of a Van der Waals gas when b=0 and T=300 K, the PVvs.1/V plot is shown below. The value of the Van der Waals constant a (atm L2 mol−2): |
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| 250. |
Choose the correct order of nucleophilicity |
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Answer» Choose the correct order of nucleophilicity |
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(23.98504u),
,
.