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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. |
6 mole of alliminium atom |
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Answer» Answer: MASS of 1 MOLE of Alluminium atom = 24 g Mass of 6 mole of Alluminium atom = 24×6 = 162 g....... Explanation: Hopes it is helpful to you |
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| 2. |
You are given three solutions a,b and c with ph values 5,9 and 7 .write which solution has more hydrogen ion concentration. state the nature of each |
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Answer» bbbbbbbbbbbbbbbbbbb Explanation: dfdfdf gsbeweanecabecause THWE centyury of vbolume 785875 BNA IYT cajnt BERA so it will not work g7uere |
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| 3. |
Nomenclature of[Cr(en)3]Br3 |
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Answer» Answer:tris-(ethylene diamine)CHROMIUM (III)bromide This is a COORDINATION COMPOUND |
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| 4. |
B) The space among gas molecules is less compårect to liquids. |
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Answer» YES, So only GAS MOLECULE can be EVERYWHERE |
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| 5. |
calculate averaga molecular mass of ozone 20% of it decomposes to oxygen. Also calculate the vapour density of mixture. |
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Answer» Answer: |
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| 6. |
Plz solve this question plz. |
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| 7. |
Match the following.Column (A) Column (B)(i) Alcohol and water (a) Centrifugation(ii) Chalk and water (b) Sublimation(iii) Cream from milk (c) Fractional distillation(iv) Oil and water (d) Separating funnel(v) Salt from seawater (e) Chromatography(vi) drugs from blood (f) Evaporation |
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Answer» Answer: Match the following. COLUMN (A) Column (B) (i) Alcohol and water (a) CENTRIFUGATION (ii) Chalk and water (b) Sublimation (iii) Cream from milk (c) Fractional distillation (iv) Oil and water (d) Separating funnel (v) Salt from SEAWATER (e) CHROMATOGRAPHY (vi) drugs from blood (f) EVAPORATION |
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| 8. |
What do you mean by symmetry element? |
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Answer» A symmetry element is a point of REFERENCE about which symmetry OPERATIONS can take place. In particular, symmetry elements can be IDENTITIES, mirror planes, AXES of ROTATION, and centers of inversion. A symmetry element corresponds to a symmetry operation that generates the same representation of an object |
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| 9. |
what is the colour of the electromagnetic radiation emitted during the transition from n=4 to n=2 state in the hydrogen atom ? |
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Answer» R is the Rydberg's constant which has the value . Substituting these VALUES in the equation we MAY get the wavelength of 486 nm which is for blue line. HENCE, n=4 to n=2 TRANSITION emits the blue line. |
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| 10. |
Royal tiger team iam a safe shop achiever that are coming |
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Answer» PLEASE mark this as BRAINIEST |
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| 11. |
Which one of the following property of matter is not a quantitative in naturemass lengthcolour volume |
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Answer» COLOUR is the property of matter which is not QUANTITIES in nature. PLEASE MARK as BRAINLIEST... |
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| 13. |
Calculate ph of 0.08M solution of hypochlorous acid. My doubt is while writing the ionization constantInitial - 0.08 , 0, 0equ conc- 1-x, x, x0.08(1-x) , 0.08x,0.08xright? |
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| 14. |
What do you observe when the following react with NaOH.a.calcium nitrate.b.Ferrous sulphate.C.copper sulphate.d.Zinc sulphate.e.Lead nitrate. |
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Answer» Naoh+calcium NITRATE - - - - - - sodiumnitrate+calcium HYDROXIDE |
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| 15. |
Please tell me fast its urgent please please |
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Answer» ............................ |
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| 16. |
Give reason for each of the following -(a) Ionic compounds have high melting point(b) Inert gases do not form ions(c) Conductivity of dil. Hydrochloric acid is greater than that of acetic acid(d) Solid ionic compounds do not conduct electricity(e) Non polar covalent compounds do not conduct electricity |
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Answer» Answer: DUDE profile is nice, HANDSOME FOLLOW me dude |
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| 17. |
Give balanced equation for the following conversion 1. NH3 ←--------H2----------→H2S |
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Answer» THIS IS YOUR ANSWER HAVE A GOOD DAY/NIGHT |
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| 18. |
Identify the type of chemical reaction8Fe + Sg > 8FeS |
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Answer» iscwwibwwuwmwohfDieowdow |
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| 19. |
........ hard water are soften by briling |
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Answer» ᴀ ғᴏʀᴄᴇ ɪs ᴀ ᴘᴜsʜ ᴏʀ ᴘᴜʟʟ ᴜᴘᴏɴ ᴀɴ ᴏʙᴊᴇᴄᴛ.... sᴏʀʀʏ ғᴏʀ ᴛʜᴇ ɪɴᴄᴏɴᴠᴇɴɪᴇɴᴄᴇ.......... |
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| 20. |
A saline solution of sodium chloride in water is 92%m/v. How many grams of sodium chlorideis required to prepare 5ml of this solution. |
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Answer» Answer 4.6g Explanation: |
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| 21. |
Solve the unbalanced equation - k+h2o gives koh+h2 |
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Answer» I can't understand what is MEANING of your questions Explanation: |
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| 22. |
What mole of oxygen is required to react completely with 1.5 moles of ethane |
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Answer» Answer: 5.25mol Explanation: From stoichiometry of the REACTION 1MOL of Ethane = 7/2 mol of O2 1.5 mol of ETHAN = 5.25 mol of O2 |
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| 23. |
During electroplating of an article by silver(a) Name the electrolyte used(b) Of what cathode is made of ?(c) Of what anode is made of ?(d) Name the acid used in the process(e) Write reaction at the cathode |
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| 24. |
The correct electric contrifugation of potassium |
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Answer» Answer: We now shift to the 4s orbital where we place the remaining electron. Therefore the Potassium electron configuration will be 1s22s22p63s23p64s1. The configuration notation PROVIDES an EASY WAY for SCIENTISTS to write and communicate how electrons are arranged around the nucleus of an atom. |
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| 25. |
Electrons are filled in various orbitals according to -------- * |
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Answer» In an atom, the electrons are filled in various ORBITALS according to aufbau principle, PAULI exclusion principle and Hund's rule. PLEASE MARK AS BRAINLIEST AND ALSO FOLLOW ME |
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| 26. |
38. Gold crystallises in face centred cubic structure.If atomic mass of gold is 197 g mol-1, the mass ofthe unit cell of gold will be(a) 3.25 x 10-23 kg (b) 6.5 x 10-23 kg(c) 3.9 x 10-24 kg (d) 1.3 x 10-24 kg |
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| 27. |
Work done in isothermal and reversibleprocess is maximum. - |
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Answer» Answer: Hope its HELPFUL to you Please friend me mark as BRAINLIEST Answer plz |
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| 28. |
6. Mixing chlorine gas with solid slaked lime results in production of bleaching powder having following structureOСІCaCHINCCIa). Mark the covalent bond in the structure above as ©b). Mark the ionic bond in the structure above as î.c).write balanced chemical reaction for hydrolysis of bleaching powder. (3) |
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Answer» Answer: Calcium HYPOCHLORITE is PRODUCED industrially by treating slaked lime with chlorine gas. The REACTION can be conducted in stages to GIVE various compositions each with different concentrations of calcium hypochlorite together with unconverted lime and calcium chloride. Ca(OH) 2
+2Cl 2
→Ca(OCl) 2
+CaCl 2
+2H 2
O So, the correct answer is bleaching. Explanation: hope you are satisfied with the answer |
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| 29. |
What is atom? what is the significance of atom? |
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Answer»
Atom, smallest unit into which matter can be divided WITHOUT the RELEASE of electrically charged particles. It ALSO is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of CHEMISTRY.
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| 30. |
37. If all the lattice points in ccp structure namelycorners, face and edge centres and body centre areoccupied by atoms then the total number of atoms inthe unit cell will be(a) 8(b) 12(c) 14 (d) 16 |
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Answer» Answer: 16 N TRIANGLE,AB=AC, AD perpendicular to Bc. Prove AD bisect angle A and SIDE BC |
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| 31. |
Sorry In which way do the cabinet Minister more power than the other Ministers ? |
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Answer» A MINISTER of State with independent charge is a minister WITHOUT an overseeing Cabinet Minister in the State or Union Government of India. He himself is in charge of his ministry, UNLIKE Minister of State who is ALSO a Minister but assists a cabinet minister. |
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| 32. |
ReactComplete the following reactiono(OH) + Conc. HNO₃ - ? |
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Answer» Answer: a) 3Cu+8HNO 3
→3Cu(NO 3
)
+2NO+4H 2
O b) 30HNO 3
+5I 2
→10HIO 3
+30NO 2
+H 2
O |
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| 33. |
Two elements X and Y have atomic numbers 12 and 16 respectively. To which period of periodic tabledo those two elements belong? What type of bond will be formed between them ? Also give chemical formula of compound formed. |
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Answer» Answer: OKK it will help you. you have any other doubt . you will ASK me |
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| 34. |
In the electroloysis of acidified water the volume of oxygenproduced is __________ of the volume of hydrogen. |
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Answer» In the electroloysis of acidified water the VOLUME of oxygen PRODUCED is half of the volume of HYDROGEN. Reason: The ratio of the volume of hydrogen produced to the volume of oxygen, when the electrolysis of acidified water is carried out is 2:1. |
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| 37. |
How many unpaired electrons are present in the ground state of Fe3+(z = 26 ), Mn2+ (25) and Neon (z= 10). |
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Answer» Explanation: For determining the unpaired electrons remember that you need to remove the electrons from the HIGHEST 'n' (principal quantum number ) so here we go 1. Fe (z=26) Fe = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶ REMOVING 3 electrons from 4s and 3d because 4s can't remove more than 2 so now FE3+ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰ 3d⁵ as in d orbital only 10 electrons can be accommodated let's see
Out of those 10 5 will be of one spin and 5 of opposite spin So 5 unpaired electrons Mn (z= 25) Mn= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵ removing 2 electrons from 4s orbital Mn2+ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰ 3d⁵ here also 5 unpaired Neon =1s² 2s² 2p⁶ no unpaired as it's an inert gas Thank U ☺️ |
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| 38. |
50 compounds and thier names |
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Answer» Explanation: Acetic acid 60.052 g/mol CH3COOH 2 Hydrochloric acid 36.458 g/mol HCl 3 Sulfuric acid 98.072 g/mol H2SO4 4 Acetate 59.044 g/mol CH3COO– 5 Ammonia 17.031 g/mol NH3 6 Nitric acid 63.012 g/mol HNO3 7 PHOSPHORIC acid 97.994 g/mol H3PO4 8 Sodium phosphate 119.976 g/mol Na3PO4 9 Calcium carbonate 100.086 g/mol CaCO3 10 Ammonium sulfate 132.134 g/mol (NH4)2SO4 11 Carbonic acid 62.024 g/mol H2CO3 12 Sodium BICARBONATE 84.0066 g/mol NaHCO3 13 Sodium hydroxide 39.997 g/mol NaOH 14 Calcium hydroxide 74.092 g/mol Ca(OH)2 15 Ethanol 46.069 g/mol C2H5OH 16 Hydrobromic acid 80.912 g/mol HBr 17 Sulfuric acid 98.072 g/mol H2SO4 18 Nitrous acid 47.013 g/mol HNO2 19 Potassium hydroxide 56.11 g/mol KOH 20 Silver nitrate 169.872 g/mol AgNO3 21 Sodium carbonate 105.988 g/mol Na2CO3 22 Sodium chloride 58.44 g/mol NaCl 23 Cellulose 162.1406 g/mol (C6H10O5)n 24 Magnesium hydroxide 58.319 g/mol Mg(OH)2 25 Methane 16.043 g/mol CH4 26 Nitrogen dioxide 30.006 g/mol NO2 27 Potassium hydroxide 56.105 g/mol KOH 28 Sodium nitrate 84.994 g/mol NaNO3 29 Sulfurous acid 82.073 g/mol H2SO3 30 Aluminium sulfate 342.15 g/mol Al2(SO4)3 31 Aluminum oxide 101.96 g/mol Al2O3 32 Ammonia 17.031 g/mol NH3 33 Ammonium nitrate 80.043 g/mol NH4NO3 34 Ammonium phosphate 132.056 g/mol (NH4)3PO4 35 Barium hydroxide 171.341 g/mol Ba(OH)2 36 Carbon tetrachloride 153.811 g/mol CCl4 37 CITRIC acid 192.123 g/mol C6H8O7 38 Hydrocyanic acid 27.026 g/mol HCN 39 Salicylic Acid 138.121 g/mol C7H6O3 40 Hydroiodic acid 127.91 g/mol HI 41 Hypochlorous acid 52.457 g/mol HClO 42 Iron iii oxide 159.687 g/mol Fe2O3 43 Magnesium phosphate 262.855 g/mol Mg3(PO4)2 44 Sodium acetate 82.0343 g/mol C2H3NaO2 45 Sodium sulfate 142.036 g/mol Na2SO4 46 Sucrose 342.2965 g/mol C12H22O11 47 Potassium nitrate 101.102 g/mol KNO3 48 Ammonium bicarbonate 96.086 g/mol NH4HCO3 49 Ammonium chloride 53.489 g/mol NH4Cl 50 Ammonium hydroxide |
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| 39. |
Vibrational Transition exits in |
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Answer» Answer: A molecule's rotation can be affected by its VIBRATIONAL transition because there is a change in bond length, so these rotational transitions are expected to occur. Since vibrational energy STATES are on the order of 1000 cm-1, the rotational energy states can be SUPERIMPOSED upon the vibrational energy states. |
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| 40. |
now a days fashion industry is focusing on sustainable fabric ok of cloth making a evaluate weather this fibres are going to reduce for enhance the environmental pollution |
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Answer» what is the QUESTIONS.... |
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| 42. |
For what purpose do farmers addCaO and NH4NO3 to their fields?Why are the two never addedtogether ? |
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Answer» Farmers add calcium oxide (lime) and ammonium SALTS to their FIELDS. The COMPOUNDS are not added at the same time because they REACT with each other. 16 A sample of fertiliser is tested by warming it with aqueous sodium hydroxide. Explanation: please do follow me. |
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| 43. |
Question 1 :Molar extinction coefficient € is optical densitywhen layer of solution is ----- thick andconcentration of absorbing medium is1) 2 cm, 2mol/L2) 2cm, 1 mol/L3) 1 cm, 1 mol/L4) 1mm, 1 mol/L |
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| 44. |
U10)in Two enperimentconvertedof chioride mes peetivoly:O. 259 gon andinto lead choride , yielding 0.347 gm and 012783."0. 2o7gomshow thatThe datecomposition ?of lead werei illustrated thelaw ofconstant |
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| 45. |
Advantages and Disadvantages of soap industry in detail? |
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Answer» Explanation: Advantage of soap: SOAPS are MADE from natural fats and oils and so are fully biodegradable so it does not cause any water POLLUTION. .Disadvantage of soap: Soaps cannot be USED in hard water. Soaps contain caustic soda. This is the first big disadvantage. ... Soaps remove the natural oils on skin. Our skin produces natural oils from oil glands on it. ... pls mark as BRAINLIST... |
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| 46. |
What is astrobiology/ exobiology? |
Answer» ASTROBIOLOGY, formerly KNOWN as exobiology, is an interdisciplinary SCIENTIFIC field concerned with the origins, early evolution, distribution, and future of life in the universe. Astrobiology considers the question of whether extraterrestrial life exists, and if it does, how humans can detect it. |
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| 47. |
4.(i) mixed(ii) capitalist(iii) marxist(iv) socialistiThese two countries in South America do not share their borde(i) Chile - Ecuador(ii) Argentin(iii) Columbia - French Guiana(iv) Surinam2.2. Match the correct pairs.Group 'AGroup 'B'1. PantanalConvectional rainfall2. Coastal Forests b. Railway Station in India3. Amazon valley Tourist place4. Rio De Janeiro d. Grasslande.Sundari treesf. | Largest wetlandsa.C.3. State whether the statements are right or wrong. Correct th |
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Answer» ?? |
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| 49. |
Question-------------of following is the electrode whosepotential does not depend on H+ ionconcentrationquinhydrone electrodehydrogen electrodeglass electrodecalomel electrode |
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| 50. |
Chlorination of ethane in thepresence of U. V. light followed bytreatment with aq. NaOHgivesO sodium ethoxideethanoletheneOmethanol |
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Answer» gxnsgfnfgnhzkapmsajhsjgsbs ksjsnnsg sjhdgshhs |
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