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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. |
Calculate the number of moles of methanol in 5 literof its 2m solution having density 0.981kg/l. |
| Answer» Given ,. Volume = 5L , molarity=2m, density=0.981kg/L we have, molar mass=1.842m. No. Of moles= volume* molarity.= 5* 1.842 = 9.21 moles | |
| 2. |
What is chemistry??? |
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| 3. |
Reference book for class 11 science..... |
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Answer» Thanks bro.... Hc verma according to me? |
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| 4. |
Why it take more time to cook rice or dhal as compare to the plane area |
| Answer» On mountains and hilly regions, the air is less dense and\xa0the atmospheric pressure is also\xa0less. As the altitude is higher, the air column weight is reduced. So the pressure is reduced as compared to the sea level or below the mountains. Water has a lower boiling point at a lower temperature.The food items like rice or meat\xa0need to be cooked at high temperatures. If we heat rice at 70°C, it does not cook completely. It becomes half cooked. Usually we use water to cook our food. So water heats up\xa0to the lower\xa0boiling point (say 80°C)\xa0at the top of the hill and boils. The temperature does not rise above 80°C. But at the sea level, the water boils up to\xa0100°C and so the food is heated to\xa0100°C. Then it is cooked nicely and it becomes soft and edible.It is possible to add salt to water to increase the boiling point on top of hills. But salt water could change the taste of food. | |
| 5. |
Difference between molecular mass and formula mass |
| Answer» The formula mass (formula weight) of a molecule is the sum of the atomic weights of the atoms in its empirical formula.The molecular mass (molecular weight) of a molecule is its average mass as calculated by adding together the atomic weights of the atoms in the molecular formula. | |
| 6. |
please give the option to click a photo so i can easily ask doubt to you |
| Answer» Please download doughnut or brainly app..... | |
| 7. |
What is data??? |
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Answer» Thanks aadya and akash Data are the raw facts from which information is derived.. Data is used in the form of mbs,gbs also it is used by us in day to day life |
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| 8. |
No.of neutrons present in 1.73g of Ammonia is? |
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| 9. |
What is solid?? |
| Answer» SOLID is an acronym that stands for five basic principles of Object-Oriented Programming and design to fix STUPID code: Single Responsibility Principle. Open/Closed Principle | |
| 10. |
What is liquid?? |
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Answer» Its a state of matter. A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. |
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| 11. |
What is atoms?? |
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| 12. |
Differentiation between Pesticides and insecticide ?????? |
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Answer» ??? Yup dude?????? My pleasure ?? Thnx dude? Pesticides are the chemicals which is used to destroy pests.. Insecticides are the chemical which is used to kill insects.. ?? |
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| 13. |
How much iron can be obtained from 20 g of ferrous sulphate? |
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| 14. |
What is suspension solution??? |
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Answer» Aapka set kon sa tha Mai hu... Mere yha bhi nhi hui thi bde kadak teacher the... Sirf maine I. T me ek ladke ko btaya tha... Usne mujhe sst ka map btaya tha geography wala... History wala aa rha... Geography ka map maine pda he nhi tha... Bhai.....sing kar ke id apne hi banaya hai ......ya phir aadya hai |
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| 15. |
How to calculate the number of electrons |
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Answer» By using calculator Mass of an electron = 9.1 x 10-28 gOr9.1 x 10-28 g contains = 1 electronTherefore 1g contains = 1/9.1 x 10-28 *1 = 1.098 x 1027 electrons |
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| 16. |
What is aqua - regia... |
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Answer» Aqua regia is a solution which contanin 3part of HCL and 1part of H2SO4 No one ? |
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| 17. |
About the author of pradeep\'s publishers |
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| 18. |
Theme of the book pradeep chemistry class 12 |
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| 19. |
EID MUBARAK ALL OF YOU ???? |
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Answer» Thnks bro Same to you... ? |
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| 20. |
How atom exist |
| Answer» Atoms exist\xa0in free states in the form of molecule. ... Molecules may be formed by the combination of\xa0atoms\xa0of two or more different elements. For example molecule of water. It is formed by the combination of two\xa0atoms\xa0of hydrogen and one\xa0atom\xa0of oxygen.\xa0Atoms\xa0are not able to\xa0exist independently. All the elements on the far right side of the periodic table (inert or noble gas)\xa0atoms can exist independently\xa0because they all fulfil the octet rule. They\xa0do\xa0not need bond to become stable. ... A molecule is comprised of two or more chemically bonded\xa0atoms. It is estimated that there are between10^78 to 10^82\xa0atoms\xa0in the known, observable universe. In layman\'s terms, that works out to between ten quadrillion vigintillion and one-hundred thousand quadrillion vigintillion\xa0atoms. | |
| 21. |
What is sn2 reaction |
| Answer» The SN2 reaction is a nucleophilic substitution reaction where a bond is broken and another is formed synchronously. Two reacting species are involved in the rate determining step of the reaction. The term ‘SN2’ stands for – Substitution Nucleophilic Bimolecular. This type of reaction is also referred to as bimolecular nucleophilic substitution, associative substitution, and interchange mechanism. | |
| 22. |
Calculate the mole fraction of each component of 1 molal NaOH solution. |
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| 23. |
The maximum number of electrons present in F subshell are |
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Answer» R u suhana?? There are 14 electrons present in f subshell. Read the answer and be ? |
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| 24. |
Shape of d and p orbitals |
| Answer» The\xa0orbitals\xa0with the value l= 1 are the\xa0p orbitals\xa0which contain a nodal plane including the nucleus hence forming a dumbbell\xa0shape. The\xa0orbitals\xa0with l= 2 are the\xa0d orbitals\xa0which have complex\xa0shapes\xa0with at least two nodal surfaces. The\xa0orbitals\xa0with l= 3 are called the f\xa0orbitals\xa0that are more complex.\xa0d orbitals\xa0are wavefunctions with ℓ = 2. They have an even more complex angular distribution than the p\xa0orbitals. For most of them it is a "clover leaf" distribution (something like 2 dumbbells in a plane). dorbitals have two angular nodes (two angles at which the probability of electron is always zero.\xa0An\xa0orbital\xa0is a wave function for an electron defined by the three quantum numbers, n, ℓ and ml.\xa0Orbitals\xa0define regions in space where you are likely to find electrons. ...\xa0p orbitals\xa0(ℓ = 1) are dumb-bell\xa0shaped. The three possible\xa0p orbitals\xa0are always perpendicular to each other. | |
| 25. |
Chemistry test should be free |
| Answer» I don\'t know | |
| 26. |
What do you mean by philosophers stone |
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| 27. |
What is demonetization?? |
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Answer» Aadu aap 11 me hindi loge ya I. T.... Hello Hi ? Demonetization\xa0is the act of stripping a currency unit of its status as legal tender. ... Sometimes, a country completely replaces the old currency with new currency. The opposite of\xa0demonetization\xa0is remonetization, in which a form of payment is restored as legal tender.\xa0Demonetization\xa0was initiated with a wide array of motives like stripping the\xa0Indian\xa0economy of its black money, push people to pay taxes for the unaccounted pile of cash, curb terrorism, promote the digital\xa0India\xa0movement and make\xa0India\xa0a cashless economy. |
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| 28. |
What is morality?? |
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Answer» Hm ur name Thanks |
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| 29. |
What is Molarity???? |
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Answer» By Okk..bye talk to later... Phone charge nhi h... Mai 1 July se continue aaunga ok Niche kya likha bro smjh n aa rha h... Hi |
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| 30. |
calculate the wavelength of an electron moving with velocity of 5*10^ 30m/s??????? |
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Answer» Full sol kar do na... Plzzz 1.37* 10^-34 m |
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| 31. |
Differentiates absorption and emission spectrum |
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Answer» Thanku so much darling ? \tEmission SpectraAbsorption SpectraProduced when atoms release energyProduced when atoms absorb energyComprise of coloured lines in the spectrumComprise of dark lines or gaps in the spectrumIs in helpful in figuring out the composition of a certain matterCan be used to figure out the ability of certain objects to retian heat and its absorption levelThe type of photons emitted is helpful in figuring out the kind of elements the substance is made of as each element radiates a different amount of energy and has a unique emission levelThe wavelengths of light absorbed is helpful in figuring out the quantity of substances in the sample.\t |
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| 32. |
What will be the molarity of solution which contain 5.85gms of NaCl per 500 ml |
| Answer» The\xa0molarity\xa0is calculating the moles of solute\xa0per\xa0volume of\xa0solution\xa0that is taken in litre. It\xa0has\xa0to analyse with moles of\xa0NaCl\xa0is equal to 5.85/58.5=0.1.Molarity varies with temperature and so we have to specify this for the answer to be accurate. Let’s go with 20˚C. Also molarity is specified per litre of the solution and so we’ll need to work out the solution volume at 20˚C.Now the atomic masses of Sodium and Chlorine are 22.99 and 35.45 respectively, so the molecular mass of NaCl is 58.44g. With 5.85g of NaCl we therefore have:5.8558.44=0.1001\xa0mol5.8558.44=0.1001\xa0molMeanwhile 200ml of water has a mass of 200g and so the mass of the solution is 5.85+200=205.85g.\xa0 | |
| 33. |
What is mole fraction?? |
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Answer» Kaise ho Hi bro. Mole fraction represents the number of molecules of a particular component in a mixture divided by the total number of moles in the given mixture. It’s a way of expressing the concentration of a solution.Mole Fraction formulaThe molar fraction can be represented by X. If the solution consists of components A and B, then the mole fraction is,Mole fraction of solute = Moles of solute/Moles of solute + moles of solvent Hi |
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| 34. |
What is VSEPR model??? |
| Answer» VSEPR\xa0notation gives a general formula for classifying chemical species based on the number of electron pairs around a central atom. Note, however, that not all species have the same molecular geometry. For\xa0example, carbon dioxide and sulfur dioxide are both species, but one is linear and the other is bent.\xa0It is the relative arrangement of bonded atoms in a molecule. The way in which the bonded atoms direct themselves around the central atom is explained on the basis of this\xa0theory. | |
| 35. |
What is mattalurgy?? |
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Answer» Hi Thanks smaarkee sis and gaurav sir.... \xa0Metallurgy\xa0The scientific principles and the physical and chemical processes that are applied to obtain pure metals from their ores are known as metallurgy.In other words, the process used for the extraction of metals in their pure form from their ores is referred to as metallurgy.The extraction of a metal from its ore depends on:1.\xa0The type of ore being used.2.\xa0The nature of the impurities present in the ore.3.\xa0The degree of the reactivity of the metal that is to be extracted. |
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| 36. |
When 125 ml of 0.5M AgNO3 is added to 100ml of 0.3M NH4Cl how many grams of AgCl are formed |
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| 37. |
What is featured??? |
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Answer» Helo...who is lover of ... M anybody know? Hii bro... Kaise ho... Hii Who are you?? Good night bro |
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| 38. |
Cell is discovered by robert frost when? |
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Answer» M toh normal bat kr rhi hu Tum chid kiu rhe ho bhai Aur ha tumse kisne kha ke Mai tension le rha hu.... Okk byee.., O hlo mujhe kisi ka no. Nhi chiye okk.... Royal bro... Tum tnsn na lo m tumhe seraj ka no. De dugu |
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| 39. |
Dimension of stress??? |
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Answer» Mere question me bat na kro... But..saayad jldiii ho jaaun ???? ᴛɴsɴ ɴᴀ ʟᴏ ᴀᴀʀᴇ ᴅʜʀᴜᴠ ɴʜɪ ʜᴏᴛᴇ |
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| 40. |
What is p - orbital?? |
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Answer» Kon aag ma ghee dal rha ha seraj ?\u200d♀️?\u200d♀️ Ab yaar tum aag mai ghee mat daalo It\'s okk sis... Byee... Nhi royal bro. Noo need for sorry , i am sorry because mana he kuch zaida bol diya ap ko.....??Ad sorry for kisi or ka question ma likhna ka liya .... |
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| 41. |
The weight if 1 molecule of a compund C60H122 is? |
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Answer» R u twinkle... My bff? I m not non med. Student O nice name nd samosa chat kha rhe h khaogi Thn plz don\'t ans... I need this sol. Don\'t know dear |
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| 42. |
About mole concept |
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Answer» Tmne kha to ae Kiu Rukhsar bhi h vha.. Thk bye hm ja re ?? ?? ??? |
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| 43. |
Molality? |
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Answer» Kon? Kaise ho tum ?tu chehak hi hai....? Koi ni h abhi Tum kha chli jati ho |
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| 44. |
What is P orbital ?? |
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Answer» No Missbusy girl chehak hai... tu ??? Hii Hlo Gm all , hope a good ahead to all ☺️☺️ |
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| 45. |
New concept |
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Answer» Hi ??? ?? ???? ????? Dhruv kha ho Welcome back???.......Kya hua dhruv bhi code to bta do ???? |
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| 46. |
Koi h kyaaaa |
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Answer» Kaise ho chehak Hnji... Good morning ? Hi Good morning |
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| 47. |
Why chemistry is important |
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Answer» Chemistry is important because it deals with the structure of matter n about it\'s properties n so on...? Coz its important?? Hi Ji Snk elective mai aao u all |
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| 48. |
https://media.tenor.co/images/04fd0530859ed723f9c0d586ea925968/tenor.gif |
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Answer» Voh Kon ji.... M. Ya voh? Kha gye madam ? Yr image aa hi ni rhi |
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| 49. |
What is solid ??? |
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Answer» Likha hua to ha read kr lo......??? Ur name? Hello Hi.. Hello all , aj to yha pr bhout sara bnda ha , jb ma aaiya tha tb to koi nee tha ????? |
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| 50. |
E app bhut boring ho gya no old friend s?? |
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Answer» Ryt sanaya? Kha gye haa Whatsapp pr aao Hi i m back for few min. |
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