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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. |
Product of CH3 — CH = CH2 + H2 |
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Answer» you have UNDERSTOOD |
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| 2. |
Packing efficiency derivation of ecc |
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Answer» i can't UNDERSTAND ...... |
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| 3. |
Pls answer as soon as possible |
| Answer» RK me as the BRAINLIEST | |
| 4. |
In Structure CH - CONС 11 - Соmany hetero atomsthe ring ?howinarepresent• |
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Answer» jgzogzigzultslyralyeYleayleaylrYleYleYlealryExplanation:lhxoyuulayksYldYlfFulUlrYlrLyrUlrYeleyLleyaaeyeyaayeeya |
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| 5. |
Two liquid A and B have latent heat of vaporisation as 115j/kg and 160j/kg respectively arrange these in increasing strength of interparticle space |
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Answer» liquid A then liquid B has INTERMOLECULAR STRENGTH is more than required HEAT would be more hope so HELPFUL.. |
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| 6. |
two liquid A and B have latent heat of vaporisation as 115j/kg and 160j/kg respectively arrange these in increasing strength of interparticle space |
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Answer» the ORDER is liquid A then liquid BAS LATENT heat PROPORTIONAL to intermolecular forceso ...hope so helpful.. |
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| 7. |
Iupac name na2 nh3 6 cl2 |
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Answer» tion:Hexaamminenickel(II) chloride is the chemical compound with the formula [Ni(NH3)6]Cl2. It is the chloride salt of the metal ammine COMPLEX [Ni(NH3)6]2+. The cation features six ammonia (called ammines in COORDINATION chemistry) ligands attached to the nickel(II) ion.pls MARK as brainlist pls pls pls pls |
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| 8. |
Upper layer of ice acts as an ..... and protect the fish and animals from cold |
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Answer» blanketExplanation:FISH and animal are protected from external COLD as this layer PROVIDES closure |
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| 9. |
Explain that the conductance ratio ^/^° gives degree of dissociation (alpha) for weak electrolytes but not for KCl or HCl. |
| Answer» PLEASE GIVE a thanksExplanation:Search Results Featured snippet from the WEB The degree of dissociation of a weak electrolyte is proportional to its molar conductance. ... The second class of compounds, known as weak electrolytes, are those where ionisation is incomplete. The ionisation will increase with dilution and hence the molar CONDUCTIVITY INCREASES with dilution | |
| 10. |
2 Η2Ο2-2H20what is the number 2 in front of the H2(andH2O)called? |
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Answer» it is the NUMBER of atom in per moleculeExplanation:it is ALSO called ATOMOCITY |
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| 11. |
What is the function of collector in froth flotation? |
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Answer» A COLLECTOR is a chemical that selectively binds to the surface of target minerals and IMPARTS hydrophobicity to those mineral particles, a NECESSARY condition for air bubble attachment. COLLECTORS can generally be classified into three categories – nonionic, anionic or cationic. |
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| 12. |
Reaction involved in cu+2agno3-- cu(no3)2+2ag |
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Answer» Cu + 2AgNO3 → 2Ag + Cu(NO3)2. This reaction does HAPPEN because copper is higher on the activity series than SILVER. If the single METAL is below the metal BONDED to the anion, the reaction would not proceed. ...Explanation:follow me mark as brainest |
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| 13. |
what happen if the carbothermic reduction process is applied to the metals which" form" carbides with carbon at the reduction temperature?? |
| Answer» TION:If you want to reduce a metallic oxide, you have to USE an element to react with it that is higher on the reactivity series. ... Carbon is more reactive (higher on the reactivity series) COMPARED to ZINC. You can't reduce magnesium oxide with carbon because magnesium is more reactive than carbon. | |
| 14. |
Please select the correct answers |
| Answer» SORRY but your QUESTION is INCOMPLETE | |
| 15. |
It's very urgent... plzzz solve it |
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Answer» teresting questions, but are difficult though, Here we go:1. 2 methyl cyclo- Hexanone2. The aldehyde gets the first PRIORITY, and the double bond gets the second priorityyour answer is: 3 ethyl but- 3- ene- 1 al3. The carboxylic acid gets the first priorityYour answer is: 3 HYDROXY butanoic acid4. The linear CHAIN has the most number of carbon atoms, so the cyclo group is considered as a substituentYour answer is: 2 cyclo propyl butaneagain please mark me brainliest XD |
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| 16. |
In an experiment, to determine the percentage purity of the hydrochloric acid, 25cm3 of the acid solution made by dissolving 25.5g of impure acid in a liter of solution was found to neutralize 25cm3 of 0.4M NaOH solution. Calculate a. Concentration of the acid in (i) g/dm3 (ii) mol/dm3 b. percentage purity of the acid c. percentage impurity of the acid |
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Answer» tion:V1S1=V2S2 Here, V1= 25 CM3, V2=25 cm3, S2= 0.4 MS1 = (25×0.4) /25 M =0.4 MStrength of the acid is 0.4 MOL / dm3m = N×M Here, n= 0.4 mol / dm3, M= 36.46 g/mol = 0.4×36.46 g / dm3 =14.584 g / dm3 |
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| 17. |
Write the chemical formula of following compounds of sodium hydrogen carbonate. What? |
| Answer» NAHCO3 ( SODIUM BICARBONATE)It is ALSO called as sodium hydrogen carbonate. | |
| 18. |
Write a name formula and structure of five oxyacides of sulphur |
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Answer» this is your ANSWEREXPLANATION:HOPE it HELPS uPlease MARK as Brainliest |
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| 19. |
Q.No.1. Enlist the glassware used to prepare the following solutions: (3) 1. Preparation of 1 % NaCl solution (1g NaCl in 100 mL solution) _______________ 2. Dilution of HCl (80 mL water, 20 mL HCl) ______________ 3. Measuring 20 mL HCl ___________________ 4. Taking out 5 mL NaOH ___________________________ 5. Mixing KCl in water ______________________________ 6. Transferring 1.5 mL H2SO4 ________________________ 1 |
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| 20. |
Write equation of solubility product for 1) BaSO4 2)CaF2. 3)Bi2S3 |
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Answer» 1) The solubility PRODUCT (Ksp) of BaSO4 is 1.5 × 10-9 . CALCULATE the solubility of barium sulphate in pure WATER and in 0.1M BaCl2 .2). The solubility of calcium fluoride in saturated solution, it its solubility product is `3.2 xx 10.3). K sp (Bi 2 S 3 )=[Bi 3+ ] 2 [S 2− ] 3 =(2s) 2 ×(3s) 3 =1.2×10 −98 K sp =108s 5 =1.2×10 −98 s 5 = 1081.2 ×10 −98 s 5 ≃1×10 −100 Hence, s≃1×10 −20 . |
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| 21. |
As the volume of a specific amount of gas decreases,its pressure____ |
| Answer» VOLUME of a SPECIFIC gas decreases, it's PRESSURE Increases.HOPE THIS HELPS YOU MARK ME AS BRAINLIEST FOLLOW ME | |
| 22. |
What is Alkali? Are all alkalis base? |
| Answer» ALKALI is a SOLUBLE BASE. YES all alkalis are bases but bases are not always alkalis | |
| 23. |
plz answer me correctly! in case of colloidal solutions ... is dispersed phase mixed in dispersed medium or medium in phase |
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Answer» A colloid is a heterogeneous MIXTURE of one phase in another, where the dispersed particles are usually. Like solutions, dispersed particles will not SETTLE if the SOLUTION is left undisturbed for a prolonged period of TIME. A suspension is a heterogeneous dispersion of larger particles in a medium.hope it's help youfollow me |
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| 24. |
Why is 4 s sheel filled befor 3 d shell ? Explain inform of n+ 1 Rule. |
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Answer» electrons are filled in orbital according to the (n+l) rule. So, here it is, as you may aware of what is ‘n’, it is the shell number, means the principal quantam number. And ‘l’ is the subshell value i.e. azimuthal quantam number, which is 0 for s-subshell, 1 for p-subshell, 2 for d-subshell and 3 for f-subshell. S, now, lets SEE why 4S is filled before 3D. Lets apply (n+l) rule on both- For 4s- n+l => 4+0 = 4 For 3d- n+l => 3+2= 5 It is clear now, that the energy of 3d is larger than the energy of 4s, thats why 4s is filled before 3d. |
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| 25. |
2,3-dimethyl butane -2- amine |
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Answer» clarify you doubtThanks. If u want further ANSWERS, DM me back PERSONALLY. Please MARK as BRAINLIEST... |
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| 26. |
17. We know two different compounds may have the same empirical formula. Can you identify the pair with the same emperical formula? * 1 point C2H4 and C4H6 NO2 and N2O5 NO2 and N2O4 C2H4 and C3H8 |
| Answer» NO2 and N2O4both have EMPIRICAL FORMULA as NO2Explanation: | |
| 27. |
Two flasks are connected with a stopcock. The first flask has a volume of 5 liters and contains nitrogen gas at a pressure of 0.75 atm. The second flask has a volume of 8 L and contains oxygen gas at a pressure of 1.25 atm. When the stopcock between the flasks is opened and the gases are free to mix, what will the pressure be in the resulting mixture? |
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Answer» 1.057 atmExplanation: |
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| 28. |
What is a shell and subshell in chemistry? Define it in 1 or 2 lines? |
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Answer» the electron in an ATOM are ARRANGE are CALLED SHELLS and the shells consist of one Or more shells are called subshells |
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| 29. |
Match the elements of given atomic number withtheir properties |
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| 30. |
Write the IUPAC name of following compounds |
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Answer» N-CH3-CH3Explanation: |
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| 31. |
Write the IUPAC name of given compounds |
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Answer» Not REQUIRED to you. CONCENTRATE on |
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| 32. |
Mass of 1 mole of water |
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Answer» 18.01528 g/ mol.Explanation:HOPE THIS HELPS YOU AND PLEASE MARK ME AS A BRAINLEIST . |
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| 33. |
Can cotton plants grow in garden? If yes, what are the requirements; if no, why? |
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| 34. |
What is the IUPAC name of the compound..[CO(en)2Cl2]Br? |
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Answer» brainliest plzExplanation:[CO(en)2CL2]Cl is dichlorobis(ethylenediamine)COBALT(iii)CHLORIDE... |
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| 35. |
2 State the types of mixture. Grive Examples for each type |
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Answer» This are taken from my BOOK .what are TWO TYPES of mixture. and there examples.hope it is helpful. plz mark as brainlest answer. |
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| 36. |
which of the following hydrides of nain group elements is tge mist acidic a)H2Se 2) H2O 3) HCL 4) HI |
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Answer» hclExplanation: |
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| 37. |
Differnce between physical and chemical equillibrium |
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Answer» The DIFFERENCE between PHYSICAL and CHEMICAL equilibrium is that a physical equilibrium is an equilibrium in which the physical state of the system does not change whereas chemical equilibrium is the equilibrium state in which the concentrations of REACTANTS and products is not CHANGED with time.HOPE IT HELPS YOU............THANK YOUPLEASE MARK ME AS BRAINLIEST :) |
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| 38. |
Is Lues 3 A duwierwateraable to cut throughSwimming pubequestinwhich propertythis co soy valion D shows |
| Answer» TION:न्यू 3RD ईयर व्हाट अरे बडो कट स्विमिंग पूल रिक्वेस्ट इन विच प्रॉपर्टी दिस इज वेल यू एंड ई शोल्ड नॉट अंडरस्टैंड दिस क्वेश्चन प्लीज गूगल | |
| 39. |
Aqueous magnesium chloride solution is marketed as 20% by mass. Its density is 1.18 g/ml. Calculate (i) The mole fraction of each component(ii)Molarity (iii)Molality (iv) The concentration in ppm |
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Answer» tion:As you know, a 1.75-mol L−1 hydrochloric ACID solution will contain 1.75 moles of hydrochloric acid, the solute, for every 1 L of solution.So right from the start, you know that your solution must contain 1.75moles of hydrochloric acid.Use the COMPOUND's MOLAR mass to CONVERT this to grams 1.75moles HCl.36.46 g1mole HCl=63.805 G Now, you know that your stock solution is 36.0% hydrochloric acid by mass, which implies that in order to have 36.0 g of hydrochloric acid, you need 100 g of this solution.You can thus say that in order for your target solution to contain 63.805 g of hydrochloric acid, the sample you take from the stock solution must have a mass of63.805g HCl⋅100 g solution36.0g HCl=177.24 g Use the density of the stock solution to figure out the volume of the sample177.24g solution⋅1 mL1.18g solution=209 mL−−−−−−example hope |
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| 40. |
Whyhisgoraphiteusedasaau boicont?0 |
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Answer» hshshxgwbdhhdgdhdhshzggxgxhsggsdygdgxgs sgxtgs C so I LOVE you too BABY GIRL and I love you |
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| 41. |
Arrange S, Cl and F in order of decreasing electron affinity. Cl > F > S F > Cl > S F > S > Cl Cl > S > F |
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Answer» rect order of decreasing electron affinity is:Cl > F > S- The electron affinity becomes more negative UPON MOVING from left to right across a period. - So, chlorine has more electron affinity than sulphur.- The electron affinity becomes less negative upon moving from TOP to BOTTOM in a GROUP. - Chlorine should have a less electron affinity than chlorine but it is not the case.- In fact, fluorine has a less negative electron affinity than chlorine because of its small size and hence more repulsion.- So, the correct order becomes Cl > F > S. |
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| 42. |
a liquid has a ph less than 7 which represents an acidic solution 1)state the nature of solution if its ph increases from 7 to 14. 2)mention the ion whose concentration increases with increases in ph value .3)suggest a method that is generally used for measuring the ph value |
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| 43. |
Calife Date:Page No. :दृश)S7न8लइ लकारप्रलपुत्र मात्रे पन्नम्2 विवासीनिख)रातः गृहम3 मुनयः यजरक्षाय उपायंगम (कोत्वम् आत्मानम्युवम् ठगवतः बालकस्य नाम| फिटयूसम टा: कुत्र(अस)अहम कार्यवशात् गच्छत्या स्त्रिया सह संभाषण(कृ)स: अहम व विदुषः गुरी:१ वयम कविभाइ प्रभत थ्यनम्शिशव पशूनफिले। पीडोपुरा दुर्वासा नाम समषिअस्)एकदास महर्षकण्वस्य आझमामगिम) तत्र शुकुन्तला ट्रष्यन्तस्य विषयेचिन्तयति स्म कुर्वाधा मिक्षायाः याचनमकृ शकुन्तला तां याचना नमु) पितशापमयिन्छ)1 |
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Answer» 12Explanation:because i THUNK so brokya ghatiya QUESTION HAI |
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| 44. |
what is hoops process (in concentration of Al) ???Follow meee |
| Answer» INBOX me PLS ☺️ I m FOLLOWING U | |
| 45. |
The de brogile wavelength of a particle with mass 1 g and velocity 100 m/s is |
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Answer» ,THE EXPRESSION TO FIND OUT THE DE BROGLIE WAVELENGTH IS..LAMBDA = h/mv, where h = PLANK"s CONSTANT (6.67×10^-34)m = massv = velocityACCORDINGLY, 6.67×10^-34/100×1= 6.67×10^-36HOPE IT HELPS... |
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| 48. |
What are disadvantages of using water as a green solvent |
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Answer» can be dissolved in water. Too much water in the ground can DISSOLVE the SALTS and SINK DEEPER into the ground. The soil then has too few MINERALS. |
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| 49. |
Calculate energy frequency and wavelenght of the radiation which is corresponding to the spectral line of the lowest frequency in Lyman series in the hydrogen atom spectrum. Also calculate the energy for the corresponding line in the spectrum of Li^2+ (RH=1.09677 cm^-1, c= 3×10^8 ms^-1 ,Z=3 |
| Answer» PLEASE FOLLOW me FRIEND | |
| 50. |
Explain why copper Carbonate decompose easily in limewater |
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Answer» because its REACTIVITY is HIGH...... |
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