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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. |
What is the IUPAC names of the following.i. [Fe(H2O)6]SO4 ii. [Co(NH3)3(en)2]Cl3 iii. Na2[Ni(NO2)(CN)5]iv. NH4[Cr(Cl)4(NH3)2] v. [Cu(H2O)6]+2 |
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Answer» The IUPAC NAME of the GIVEN COMPOUND is cyclopent3−ene−1−ol. |
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| 2. |
Write the symbol, atomic number and atomic mass of the following elements.Magnesium, |
Answer» ANSWER:ELEMENT. ATOMIC NO. MASS NO. Carbon (c). 6. 12 Fluorine (F). 9. 18.99≈ 19 Magnesium(Mg) 12. 24.3≈ 24 Sulphur (S). 16. 32 Potassium (K). 19. 39 |
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| 3. |
3. The difference in deita H and delta E for thecombustion of methane at 27°C would be1) -1800 Cal2) -162 Cal3)-1200 Cal4) 0it's urgent please give me the reply |
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| 4. |
How many molecules are present in 980g of h2so4 |
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| 5. |
Write reactions of hexa aqua iron (II) and (III) with ammonia? |
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| 6. |
Answer please chemistry jee advance |
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Answer» Answer: YEAH I KNOW IT BUT I DONT KNOW WHAT YOU KNOW ABOUT IT SO I DONT KNOW CAUSE YOU KNOW I DONT KNOW SO PLEASE MAKE THE UNKNOWN AS KNOWN ,YOU THINK I DONT KNOW THIS ANSWER BUT I KNOW SO I WONT SAY THIS CAUSE YOU KNOW SOMETHING........... Explanation: |
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| 7. |
Sister you give me a responsibility so I give you a pic and also I never forget my promise |
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Answer» soooooooo CUTE............. |
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| 8. |
Calculate the percentage age composition of feSo4 |
Answer» ASK Your ANSWER ProperlyDon't WASTE You POINTS |
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| 10. |
What is the use of antacid |
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Answer» Explanation: ANTACIDS help to treat heartburn (indigestion). They WORK by neutralizing the stomach acid that causes heartburn. You can buy many antacids without a prescription. LIQUID forms work faster, but you may like TABLETS because they are easy to USE. |
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| 11. |
A colorless liquid boils at 95c under normal atmospheric conditions. Can this liquid be water? Explain your answer. |
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Answer» No Explanation: |
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| 12. |
How do the following change? [5]a) Number of shells of elements as we go top to down in a group.b) Metallic character of elements on moving from left to right in a period.c) Atomic size in moving from left to right along a period.d) Atomic size as we go top to down in a groupe) Non metallic character of elements on moving from top to down in a group |
Answer» SORRY I don't KNOW PLEASE EXCUSE me |
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| 13. |
Write the balance electrons and valency for element having Z=8 |
Answer» please mark me as brainlist |
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| 15. |
Sodium zincate is a basic radical or acid radical |
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Answer» Answer: COMPOUNDS ACID radical Basic radical Chemical formulae Sodium ZINCATE ZnO −2 +1 Na 2
ZnO 2 |
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| 16. |
State Dobereiner law of triads |
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Answer» Explanation: Dobereiner STATED in his law of TRIADS that the arithmetic mean of the atomic masses of the first and third element in a triad WOULD be approximately equal to the atomic MASS of the SECOND element in that triad. |
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| 17. |
At 1065°c, kp=0.0118 Atm for the reaction2H2S (g)reversible reaction 2H2(g) +S2(g) the enthalpy of the reaction iş177.3 kJ/ moles. Calculate equilibrium constant at 1200°c[given R= 8.314J]. |
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Answer» Ans is that Explanation: |
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| 18. |
Pls solve thi questions |
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Answer» Answer: this is the answer of second QUESTION |
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| 19. |
Find out the no. of sigma and pie bonds in a) C2H5CL. b) CH2 c) CH3 - CH- - CH2?? |
Answer» Solution:Refer ATTACHMENT there are 3 attachments
Knowledge Booster:
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| 20. |
Why is it important to remove water and carbon dioxide before liquefying air? |
Answer» Before air is liquefied, WATER vapor and carbon dioxide are removed, because these substances solidify when cooled and would clog the pipes of the air liquefaction plant. ... The cooled, COMPRESSED air is then allowed to expand rapidly. The rapid expansion causes the air to BECOME cold, so cold that some of it CONDENSES. |
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| 21. |
6.Can oxidation state be negative? DiscussVITATS |
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| 22. |
What is the hybridization of so42- |
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Answer» Hybridisation of SO4 ²-is SP ³.... SINCE it has FOUR oxygen ATOMS arranged tetrahedrally around it and thus there are total four sigma bonds in it which S atom makes with O and pi bond do not contribute to hybridisation. |
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| 23. |
What is indicator ? name the three indicators |
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Answer» Explanation: Indicators are substances that show a DISTINCT change (colour or odour) simultaneous to a change in concentration of ions such as H+ and OH- ions. EXAMPLES: Methyl orange, phenolphthalein and litmus SOLUTION. |
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| 24. |
Example of the 3 States of matter that you come across in your daily life and they are utility and make a comparative tqbleof 3 States on matter |
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Answer» Answer: Air, water, Ice Explanation: State of Matter 1. Gas: eg. Air. utility- helps US LIVE, consists of oxygen. eg. CO2 helps extinguish fire. helps in photosynthesis 2. liquid: eg. Water. utility-quenches THIRST eg. phynyl helps in disinfecting surfaces 3 solid eg. ice utility- helps in preserving things eg. wood helps in making furniture Hope this helps! |
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| 25. |
A Pulse is aa) short duration disturbanceb)does not repeatc)can travel d)all of the above |
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| 27. |
Number of individual scores in thEXERCISE-18.1Summative Assessment1 (Find the arithmetic mean (or mean) of240 0.2.0.30.0.1(tt) x when 31 < x < 41. ris naturalFind the range and the arithmetic mean |
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Answer» no ONE FOLLOWS me. no one THANK me for my ANSWERS. why should I answer then....... |
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| 28. |
A 0.207 g sample of magnesium reacts with oxygen, producing 0.574 g of magnesium oxide as the only product. What mass of oxygen was consumed in the reaction?A Not enough information is provided to determine this. B 0.367 gC 0.268 gD 0.781 g |
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Answer» no ONE FOLLOWS me. no one THANK me for my ANSWERS. why should I answer then....... |
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| 29. |
What is the effect of ch3 and no2 on acidity of phenol |
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Answer» This is the answer... |
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| 30. |
A 0.207 g sample of magnesium reacts with oxygen, producing 0.574 g of magnesium oxide as the only product. What mass of oxygen was consumed in the reaction?a.Not enough information is provided to determine this. b.0.367 gc.0.268 gd.0.781 g |
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| 31. |
5. Sulphuric acid iswhypowerful dehydrating agents |
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Answer» <STRONG>Answer: Concentrated SULPHURIC Acid is used as a drying and DEHYDRATING agent because it has a strong affinity for water and thus it ABSORBS water quickly. Explanation: ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘᴇᴅ ᴜ ᴅᴇᴀʀ sᴛᴀʏ sᴀғᴇ, ᴋᴇᴇᴘ sᴍɪʟɪɴɢ ✌☺ |
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| 33. |
What is the oxidation number of element in free state |
Answer» please mark me as brainlist |
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| 34. |
Which one will have the highest second inisation engery |
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Answer» Answer: Thus, second IONIZATION ENERGY of sodium is extremely HIGH. |
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| 35. |
Important points for class 10 chemistry chapter carbon and compounds anyone |
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Answer» HI.... |
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| 36. |
What is the standard state of carbon justify your answer |
Answer» SOLID |
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| 37. |
4) 43% Solution is prepared by dissolving 6 gm of solute incertain amount ofsolvent calculate weight of solution. |
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Answer» |
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| 39. |
The bond length of O2 2- will be ____ than that of O2 molecule |
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| 40. |
COLOUMNSr. Material No of amount time taken1. Water 10drops=2. Kerosene 10 drops=3. Petrol 10 drops= 4. Accetone 10 drops= |
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Answer» Can I have a ABOY |
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| 41. |
Define free carb anions@AkashMello |
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Answer» A carbanion is an anion in which CARBON has an unshared PAIR of electrons and BEARS a negative CHARGE usually with three substituents for a total of EIGHT valence electrons. plz follow me it is my new id |
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| 42. |
Write the difference between systolic and diastolic pressure?pls fast I need it * |
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Answer» Answer: BLOOD PRESSURE READINGS are given in TWO numbers. The top number is the maximum pressure your heart exerts while beating (systolic pressure). The bottom number is the amount of pressure in your arteries between beats (diastolic pressure). |
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| 43. |
The number of orbitals in a mainenergy level = n? |
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| 44. |
What would be the electron dot structure of a molecule of sulphur which is made up of eight atoms of sulphur? (Hint - the atoms of Sulphur a join together in the form of a ring.) |
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Answer» Answer: What would be the electron dot structure of a MOLECULE of SULPHUR which is made up of eight atoms of sulphur ? (Hint: The eight atoms of sulphur are joined TOGETHER in the form of a ring) Answer: The atomic number (Z) of sulphur is sixteen and its electronic configuration is 2, 8, 6Explanation: MAKE me brainlest Answer |
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| 45. |
Molecular mass of carbon dioxide is 44 unitstrue or false |
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Answer» True molecular MASS of CARBONDIOXIDE is 44.01amu |
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| 46. |
Filtration,evaporation,loading,crystallization |
Answer» LOADING....!!!!!OTHERS are PROCESS but loading is not a process...!!! |
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| 47. |
What happens when glucose is heated with conc.H2SO4? |
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Answer» CONCENTRATED sulfuric acid can perform a dehydration REACTION with table sugar. After MIXING, the color changes from white to brownish and eventually to black. ... As the acid dehydrates the sucrose, the water produced will dilute the sulfuric acid, giving out ENERGY in the form of heat. Explanation: Answer |
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| 48. |
The number of unpaired electrons in Chromium atom are (atomic number=24) |
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Answer» Answer: Explanation: |
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| 49. |
When we add lemon to milk why does the milk break |
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Answer» Answer: When lemon juice is added, it INCREASES milk''s acidity as lemon CONTAINS citric ACID. Due to this lowering of pH, calcium causes precipitation of the CASEIN and thus milk gets curdled. |
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| 50. |
3. State your observations when equal volumes ofhydrogen and chlorine are exposed to :4. Briefly describe your observations when(a) diffused sunlight(b) direct sunlighthydrogen gas is passed over heated copperoxide.5. State four uses of hydrogen gas.6. State two tests of hydrogen gas.7. Why is the mixture of hydrogen and helium usedin weather observation balloons, instead of purehydrogen?8. By giving examples explain the following terms:(a) Oxidation(b) Reduction. |
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Answer» Answer: 3. diffused sunlight 4.If hydrogen gas is passed over heated copper oxide (CuO), the black COATING on the surface turns brown as the reverse reaction takes place and copper is obtained. ... The hydrogen is gaining oxygen and is being oxidised.In other words, one reactant gets oxidised while the other gets REDUCED 5. Hydrogen: uses a) commercial fixation of nitrogen from the air in the Haber ammonia process. b) hydrogenation of fats and oils. c) methanol production, in hydrodealkylation, hydrocracking, and hydrodesulphurization. d) rocket fuel. e) welding. f) production of hydrochloric acid. g) reduction of metallic ores. 6. Burning splint test A splint is lit and held near the opening of the tube, then the stopper is removed to expose the splint to the gas. If the gas is flammable, the mixture ignites. This test is most commonly used to identify hydrogen, which extinguishes with a distinctive 'squeaky pop' sound 7. why is the mixture of hydrogen and helium used in weather observation, balloons, istead of pure hydrogen. Hydrogen is a very explosive gas. ... So helium is used along with hydrogen to dilute its effects. It is used instead of other noble gases because it is the second LIGHTEST element after hydrogen 8. Oxidation is gain of oxygen. 2H2 +O 2
→2H 2 O The hydrogen is oxidized and the oxygen is reduced. N 2 +O 2
→2NO This formation of nitric oxide oxidizes the nitrogen and reduces the oxygen. Reduction is the loss of oxygen from a substance. For example, copper oxide can be reduced to form copper if it is reacted with hydrogen: CuO+H 2
→Cu+H 2 O Zinc oxide can be reduced to zinc metal if heated with carbon. ZnO+C→Zn+CO hope it's help you BUDDY |
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