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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Pls guys simplify and send the answer step wise steps is needed plssss |
| Answer» MAKE me BRANILIEST I will GIVE you 20 THANKS | |
| 2. |
Define afbau rule?????....????.??..... |
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Answer» The aufbau principle, from the German Aufbauprinzip, also called the aufbau rule, states that in the ground state of an ATOM or ION, electrons FILL atomic orbitals of the lowest available energy levels before occupying higher levels. For example, the 1S subshell is filled before the 2s subshell is occupied. EXPLANATION:hope it helps you plz mark as brainliest ☺❤✌✌✌✌ |
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| 3. |
Tell me please the examples of alkyl halides .. |
| Answer» FLUORINE CHLORINE BROMINE iodineExplanation:MARK me as a a BRAINLIEST | |
| 4. |
Can anyone plz explain ' Measurement of significant figures ' ? |
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Answer» tion:it is the number of digits in a VALUE of enter measurement and CONTRIBUTE to the degree of accuracy of the value.we start counting significant figures at the FIRST non zero DIGIT calculate the number of significant figures for an instrument of numbers.hope it's helpful to you, buddy. |
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| 5. |
Equal weight of methane and sulphur axide are present in a vessel of litre capacity what is the partical pressure of sulphur oxide if the total pressure of the mixure of gasses is 12 atm |
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Answer» ................................. dhkdvdduddhddk |
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| 6. |
Who is the 7th president of america ? |
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Answer» Andrew Jackson was the seventh President of the United STATES from 1829 to 1837, seeking to act as the DIRECT representative of the COMMON MAN. |
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| 7. |
How Sodium hydroxide manufactures in indu |
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Answer» hydroxide is industrially produced as a 50% SOLUTION by VARIATIONS of the electrolytic chloralkali process. Chlorine gas is also produced in this process. SOLID sodium hydroxide is obtained from this solution by the evaporation of water. |
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| 8. |
Please help me to find out the answers |
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Answer» I am ALSO thinking about this questionExplanation:PLZ some ONE HELP me and him also |
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| 9. |
111 d) SeO2 selectively oxidisei) C-positionii) B-positioniv) 8-positioniii) Y-position |
| Answer» TION:III) y POSITION xtptixitpxpitxitxixtipts8ptsitsp7sprs7r07sr0 | |
| 10. |
Balance the following reaction and attempt following Questionsa Fe + b Mn04 + c H Od Fe2+ + e Mn+2+f H2OThe species being reduced isΟ Η"O H2OO feO Mn04 |
| Answer» MARK me as brainlieast nd follow me TAN i definitely give U answer | |
| 11. |
Benefits of natural gas. pls write easy words... Thanks!! |
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Answer» 1.safety2.future possiblities3.environmental benifits4.savings5.consistent RELIABLE, supply6.vertstality |
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| 12. |
Does aluminum trichloride consume in the reaction of acylation of toluene? |
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Answer» Aluminium CHLORIDE (ALCL3), ALSO known as aluminium trichloride, describe compounds with the formula AlCl3(H2O)n (n = 0 or 6). They consist of aluminium and chlorine atoms in a 1:3 ratio, and one form also contains six waters of hydration. Both are white solids, but samples are often contaminated with IRON(III) chloride, giving a yellow color.Aluminium chloride (AlCl3), also known as aluminium trichloride, describe compounds with the formula AlCl3(H2O)n (n = 0 or 6). They consist of aluminium and chlorine atoms in a 1:3 ratio, and one form also contains six waters of hydration. Both are white solids, but samples are often contaminated with iron(III) chloride, giving a yellow colour.. |
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| 13. |
Which of the following orbital do not have any node? 4s 3s 25 1s |
| Answer» TION:USE NODE FORMULA and FIND | |
| 14. |
Please follow me 100%followback |
| Answer» DONE ALREADY PLEASE SUBSCRIBE my YOUTUBE channel Gariyash Sut | |
| 15. |
Assexnation (A): True solution exhibits Tyndall effects Reason (R): Practices arevery small in size. (a). Both A and R are true and R is the correct explaination of A (b). Both A and B are true and R is not the correct explanation of A. (c). A is true but R is false (d). A is false but R is true |
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| 16. |
The calculated spin only magnetic moment of Cr2+ ion is:. 1. 5.92.BM 2. 2.84BM. 3. 3.87BM. 4. 4.90BM |
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Answer» ²⁺ ion To FindSpin only MAGNETIC moment of Cr²⁺ ion SolutionWe KNOW thatHereμ = SPIN only magnetic momentn = number of unpaired electronsAccording to the questionWe are asked to find the spin only magnetic moment of Cr²⁺ ionGiven thatCr²⁺ ionHenceThe number of unpaired electrons inCr²⁺ ion = 4Thereforen = 4Substituting the valuesWe getOn further simplificationWe getThereforeSpin only magnetic moment = 4.90 B.MHence Option (4) is correct |
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| 17. |
Calculate the wave number of the spectral line of shortest wave length appearing in the Balmer series of hydrogen spectrum (GivenRH=1.09 * 10^7 m^-1 ) |
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| 18. |
Ozone layer is depleted by....... |
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Answer» Ozone LAYER is GETTING depleted because of CFCS. (CHLOROFLUOROCARBONS) |
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| 19. |
4.9 grams of HSO, is present is 100 ml of the solution, then its molarity and normality are Alto Boteronta con |
| Answer» H (g/L) of H2SO4 = 4.9100 × 1000 = 49 MOLARITY = StrengthMol. MASS = 4948 = 0.5 M Normality = N × Molarity n = Mol. massEq. mass = 9849 = 2 Normality ... Moreplease follow me | |
| 20. |
Draw the atomic orbit diagram of following elements showing the distribution of protons, neutrons and electrons in the various shells of the atom. (3)a) Beryllium ( Z-4, A-9)b) Carbon (Z-6, A-12)c) Chlorine (Z-17, A-35) |
| Answer» LLIUM (Z-4,A-9) | |
| 21. |
The combustion of Benzoic acid at constant volume is accompanied by an evolution of 771.5 k cal mort 1.247 g of Benzoic acid at 25°C is burnt in a bomb calorimeterand showed a temperature rise = 2.870°C. Calculate the total heat capacity of thecalorimeter [Molar mass = 122.12 g mor'(a) 2400 cal deg(b) 2745 cal deg(c) 2975 cal deg(d) 2225 cal deg |
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Answer» tion:answrsearchWhat would you like to ask?11thChemistryThermodynamicsEnthalpies for Different Types of ReactionsHeat of combustion of benzo...CHEMISTRYHeat of combustion of benzoic acid (C 6 H 5 COOH) at constant volume at 25 0 is 3233KJ/mole. When 0.5g of benzoic acid is BURNT in bomb CALORIMETER, the temperature of calorimeter increased by 0.53 0 C. Now in the same bomb calorimeter 1g of C 2 H 6 burnt then temperature increased by 2.04 0 C. △H for combustion of C 2 H 6 is?HARDHelp best friendStudy laterANSWERcamb△H for C 6 H 5 COOH−3233 k J /molmoles in O Sy= 1220.5 = 2441 mol∴ heat ecvaluted =( 2441 ×3233)kJget specific heat for bomb calanmeter be∴5×0.53 o = 2443233 kJ⇒8= 244×0.533233 =25kJ/ o C∴ when temp inc. by 2.04 o CHeat supplied =2.04×25=51 kJ∴54 kJ is RELEASED when 1gC 2 H 6 is burnt,IE 301 mol is∴ for 1 mol, heat is 51×301530 k J /mol |
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| 22. |
Write an experiment showing the reaction of acids reacts with metals |
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Answer» Take about 10 ml of dilute HCl in a test TUBE and ADD a few zinc granules to it. We will observe the FORMATION of gas bubbles on the surface of zinc granules. Pass the gas being evolved through the soap WATER. Gas filled bubbles are FORMED in the soap solution which rise into the air.Explanation:mark me as brainliest |
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| 23. |
What is the correct increasing order of the pH values of the following solutions with equal concentrations? A. HCl < NaOH < CH3COOHB. HCl < CH3COOH < NaOHC. NaOH < HCl < CH3COOHD. CH3COOH < HCl < NaOH |
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Answer» HCl < CH3COOH < NaOHExplanation:Hope it will HELP you. Have a GOOD DAY. |
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| 24. |
Name the solvent which dissolve the 1) sulphur 2) rust 3) rubber 4) iodine |
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| 25. |
Basic principal and instrumentation of thermogravimetric analysis. |
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Answer» Pls mark as brainliest and followExplanation:A TGA ANALYSIS is PERFORMED by gradually RAISING the temperature of a sample in a furnace as its weight is measured on an ANALYTICAL balance that remains outside of the furnace. In TGA, mass loss is observed if a thermal event involves loss of a volatile component. |
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| 26. |
6.022x10^23 x 1.661 x 10^ -24 =....gmol-1 * |
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| 27. |
How can we identify by a chemical equation whether a precipitate formed or a gas liberated in a reaction |
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Answer» 2CuSO4+4KI⟶2CuI+I2+2K2SO4No. of ATOMNO. of AtomCu22S22O88K44I44 |
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| 28. |
Volume of H2 Evolved at 아Al (molas mas : 1219 malis dissolved in Excess of dilutewhen☺H₂SO4 is |
| Answer» ZINC METAL will react with dilute sulfuric acid to produce zinc sulfate, ZnSO4 , and HYDROGEN gas, H2 , which will BUBBLE out of solution.The balanced chemical equation for this single replacement reaction looks like thisExplanation:MARK ME AS BRAINLIST | |
| 30. |
Products obtained when HI reacts with isopropyl methyl ether at 373K are ? |
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Answer» HI, methyl iodide (LOWER alkyl halide) and ISOPROPYL alcohol (higher alcohol) is formed. Action of hot HI on isopropyl methyl ether: When isopropyl methyl ether (mixed ether) is reacted with hot and conc. HI at about 373 K, a MIXTURE of isopropyl iodide and methyl iodide is OBTAINED due to cleavage of both C - O bond.pls MARK me as brainliest |
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| 31. |
a vessel contain He gas at 20 atm and CH4 gas at 'P' atm. When a pinhole is made in the gases, the gases out initially contains 80% He gas by mole the value of 'P' is |
| Answer» TION is INTERESTING | |
| 32. |
8. One gram equivalent of a substance is the mass of the substance which isequivalant to :(a) 0.25 mole of O2(b) 0.50 mole of O2(c) 0.75 mole of O,(d) 1.00 mole of O |
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Answer» tion:Equivalent WEIGHT (ALSO KNOWN as gram equivalent) is the mass of one equivalent, that is the mass of a given SUBSTANCE which will combine with or displace a fixed quantity of another substance. |
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| 33. |
state heisenberg uncertainty principle explain why electron cannot be described moving in the form of an orbit |
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| 34. |
Which of the following carbonium ion is most suitable CH₃CCH₃⁺;CH₃CH₂;CH₃OCHCHCH₃⁺;CH₃⁺ |
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Answer» hilu ❤️ Explanation:THREE PHENYL GROUP stabilize the CARBOCATION by resonance. Hence, OPTION A is correct.mark ❤️ |
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| 35. |
How many atoms of each element are there in 9.8g of sulphuric acid. Plz no spam otherwise will be reported. |
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Answer» For H: 9.8gH2SO4(1molH2SO498gH2SO4)(2molH1molH2SO4)(6.022⋅1023atms1molH) =1.2004⋅1023 ATOMS / MOL H.For S: 9.8gH2SO4(1molH2SO498gH2SO4)(1molS1molH2SO4)(6.022⋅1023atms1molS) =6.022⋅1022 atoms / mol S.For O: 9.8gH2SO4(1molH2SO498gH2SO4)(4molO1molH2SO4)(6.022⋅1023atms1molO) =2.4088⋅1023 atoms / mol O. |
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| 36. |
Calcium carbonate decomposes , on heating , to form calcium oxide and carbon dioxide. When 10g of calcium carbonate is decomposed completely , then 5.6 g calciumoxide is formed. Calculate the mass of carbon dioxide formed. Which law of chemicalcombination will you use in solving this problem? please someone say me |
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Answer» According to the law of CONVERSATION of MASS,Total mass of reactant=total mass of products=5.6+4.4=10gMass of CACO 3 =10G |
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| 37. |
Q11. 310 grams of solution contains 8 grams of sugar. Thepercentage amount of sugar inthe solution will be 1.96 % 2.58%4% 3.22% |
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Answer» A solution contains a SOLID solute (sugar ) DISSOLVED in a liquid solvent (water),so we have to calculate the concentration of this solution in terms of the mass PERCENTAGE of solute (sugar ) we, Know that :Concentration of solution =Mass of soluteMass of solution ×100here, Mass of solute (sugar )=30gAnd ,Mass of solvent (water)=370gSo ,Mass of solution = Mass of solute + Mass of solvent=30+370=400 gNow ,Putting the values Of mass of solute and mass of solution in the above formula formula ,WE GET :Concentration of solution =30400×100=3047.5 per cent (or 7.5% )THus , the concentration of this sugar solution is 7.5 per cent (or that it is a 7.5 % sugar solution). |
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| 39. |
How many significant figures are there in (i) 202.50 (ii) 9.78 x 10-24 (iii) 29.6 ? |
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| 41. |
Define the trems, printer and fax machine |
| Answer» TION:Fax MACHINES scan a paper form and TRANSMIT a coded image over the telephone system. The receiving machine prints a copy (a facsimile) of the original. A fax machine is made up of a scanner, printer and modem with fax signaling.In computing, a printer is a peripheral device which MAKES a persistent representation of graphics or text, usually on paper. While most OUTPUT is human-readable, bar code printers are an example of an expanded use for printers. | |
| 42. |
Calculate normality of2MH2So4 solution? |
| Answer» ENT WEIGHT (E) of sulphuric acid=Molecular weight of sulphuric acid=M/(1×2)=M/2so, M=2E2M sulphuric acid means,1L SOLUTION contain 2M sulphuric acid=2×2E sulphuric acid=4E sulphuric acid=4N sulphuric acid. | |
| 43. |
Write the IUPAC name of the following compoí |
| Answer» PLEASE mark in brainliestExplanation:Give the IUPAC name for the following compound:Identify the FUNCTIONAL group. ... Find the longest carbon chain containing the functional group. ... NUMBER the carbons in the longest chain. ... LOOK for any branched groups, name them and assign the number of the carbon atom to which the group is attached. | |
| 44. |
Plz answer to that question frnds |
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| 46. |
14. Which of the following correctly represent the behaviour of an ideal gas a) PVM «T6) PM«dTc) P«CTd) PVCT |
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Answer» ć) ............ ... .. ......... |
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| 47. |
An Inorganic compound having Ca = 40%, C 12%, 0 = 48%. Emperical formula of thecompound is(A) CaCO3(B) Caco(D) CacoCO(0 Cazl |
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Answer» aaaaaaaaaaassaaaaaaaaaaaaaaa |
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| 48. |
भाग - II रसायन शास्त्र26. आवर्त सारिणी में सर्वाधिक ऋण-विद्युती तत्त्व है(A) नाइट्रोजन (B) क्लोरीन(C) ऑक्सीजन (D) फ्लोरीन |
| Answer» CL2 okokokokokokokokokookokokokk | |
| 49. |
Write balance equation for lead oxide+ammonia =lead+water+nitrogen |
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Answer» 3→3Pb+N2+3H 2O |
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