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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 lassaigne\'s test? |
| Answer» Nitrogen, sulphur, halogens and phosphorus present in an organic compound are detected by Lassaignes test. The elements present in the compound are converted from covalent form to ionic form by fusing the compound with sodium metal.Na + C + N\xa0{tex}\\xrightarrow{Heat}{/tex} NaH2Na + S {tex}\\xrightarrow{Heat}{/tex} Na2S\xa0\xa0 | |
| 2. |
1.2 gm of mg will produce mgo equal to |
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| 3. |
Chapter 12 notes |
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| 4. |
How will we convert methanal to 2-methyl prapanol |
| Answer» HCHO = MethanalCH3-CH2-CH3-OH | CH33-methyl propanol | |
| 5. |
non-metal don\'t react with water so how carbon dioxide can react wirh water |
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| 6. |
Physical property of alkane |
| Answer» 1_Colourless nd odourless2_Increase in boiling point with increase in molecular mass3_they possess weak van der waal forces. | |
| 7. |
What is \'inert pair effect\'? |
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Answer» Reluctance of iner s electrons to participate in bond formation is celled inert pair effect By sheilding and screening effect the core orbital electron are not participate in reaction or bonding due to increase in effective nuclear charge ,this is called inert pair effect In the elements of 4th, 5th and 6th period of the p-block the electrons present in the intervening d and f-orbitals do not shield the r-electrons of the valence shell effectively.As a result, {tex}{{ns}^{2}}{/tex} -electrons remain more tightly held by the nucleus and hence, do not participate in bonding. This is called inert pair effect. |
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| 8. |
What do you mean by polyprotic |
| Answer» Polyprotic acid is an acid which can donate more than one proton and hydrogen atom per molecule to an aquas solution. | |
| 9. |
Difference between inorganic and organic ion exchange method |
| Answer» 7033367793 | |
| 10. |
Balance MnO4- +SO2 -Mn2+ + HSO4- |
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| 11. |
How are organic compoundes classified? |
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| 12. |
What happens when borax is acidified |
| Answer» Borax acid is formed when it is acidified.Na2B4O7 + 2HCl + 5H2O → 2NaCl + 4H3BO3Borax is a weak acid so it is slightly hydrolyzed in solution and is alkaline in nature.B2O72- + 7H2O →2OH- + 4H3BO3 | |
| 13. |
How is boric acid prepared in the laboratory |
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| 14. |
What is the action of heat on borax |
| Answer» When heated, borax undergoes various transitions. It first loses water molecules and swells. Then, it turns into a transparent liquid, solidifying to form a glass-like material called borax bead. | |
| 15. |
Explain the structure and bonding of diborane |
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| 16. |
We says thats oxidation numbers are in fraction then superoxide is also in fraction why |
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| 17. |
Explain the anomalous behavior of boron from other elements |
| Answer» Due to its smaller size and unavailability of d-electrons boron is found to exhibit properties which are in contrast to the other elements of the boron family. These properties are known as anomalous properties of boron. Some of these anomalous properties are discussed below.\tExcept for boron, the compounds of the elements of the boron family like tetrahedral [M(OH)4]– and octahedral [M(H2O)6]3+ (where M denotes the member of boron family) exists in an aqueous medium.\tThe maximum covalence of boron is 4 due to the absence of d orbitals.\tBoron is a metalloid while the rest of the family are post transition metals.\tThe boron oxides and hydroxides are acidic in nature, whereas the other elements in the family form oxides and hydroxides which are amphoteric in nature. | |
| 18. |
Important questions of ch hydrogen |
| Answer» 9977738763 | |
| 19. |
(CH3) 3C+ is more stable then (CH3) 2CH+. Explain |
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Answer» Also because of +I effect The (CH3) 3C+ is more stable because it is a 3°(Tertiary) Carbocation. So it has more presence of electron releasing group as compared to the (CH3) 2CH, which is a 2°(Secondary) carbocation. Amd we know that Tertiary carbocation is more stable than secondary. |
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| 20. |
What type of questions put up from the topic detection of carbon and hydrogen |
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| 21. |
Why hydrogen is called \'rogue element\'? |
| Answer» Because it has some special properties which behaves differently from other elements.It has properties of ability to form halides, 1 valence electrons, some alkali properties and in gaseous state.So it is rogue element. | |
| 22. |
What is perhydrol? |
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Answer» Mind se???? Aap itne atpte se questions khaa se laa rhe ho..??? Hydrogen peroxide is know as perhydrol(H2O2) |
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| 23. |
Please explain what are colligative properties |
| Answer» In chemistry the colligative properties are the properties of solution that depends on theratio of number of solute particles to the ratio of number of solvent molecules in a solution. | |
| 24. |
What is Van\'t Hoff factor? |
| Answer» Van\'t hoff factors is a measure of effect of solute upon colligative properties such as osmotic pressure, relative pressure ,freezing point.etc. | |
| 25. |
What are zeolite? |
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Answer» Thanks buddy this was a new information Zeolite are microporous aluminosilicate mineral commonly used as commercial absorbent and catalyst... Zeolite are microporous alumino silicate main Raja Kamali e use dress But u can take help by surffing on internet I know but i m not sure about my answer so i can\'t tell u.. |
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| 26. |
What is Wa ken roder\'s liquid! |
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Answer» Thank u? Timing? Ok Stay at fine art tom Please find meaning of\' \'bon anniversaire\' at 12pm...? I\'ll wait tom on my way ? |
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| 27. |
What is aqua dag and oil dag? |
| Answer» If i m correct then the oil dag is just a cooking oil.But i hasn\'t have any idea about aqua dag? | |
| 28. |
What is fusion mixture? |
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Answer» It is nothing but a mixture of Nacl and kCl What a silly question!? |
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| 29. |
What is chile saltpeter? |
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Answer» It is nothing but sodium nitrate What a coincidence same question my sir also asked from us Go school from road |
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| 30. |
Calculate the mass per cent of sodium bicarbonate |
| Answer» Sodium\tNa\t27.367%Hydrogen\tH\t1.200%Carbon\tC\t14.297%Oxygen\tO\t57.136% | |
| 31. |
Vitamin C is known to contain 1.29×10^24 hydrogen atoms. Calculate the no of hydrogen atoms ? |
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| 32. |
what is the formula of syngas |
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Answer» Co+H2o The chemical composition of syngas varies based on the raw materials and the processes. Syngas produced by coal gasification generally is a mixture of 30 to 60% carbon monoxide, 25 to 30% hydrogen, 5 to 15% carbon dioxide, and 0 to 5% methane. It also contains lesser amount of other gases. |
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| 33. |
What is molecular orbital diagram of N2 O2 Li2 |
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| 34. |
Relation between molarity and normality |
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Answer» Milarity × Basisity = Normality Yaa Is this helpful If you know the Molarity of an acid or base solution, you can easily convert it to Normality by multiplying Molarity by the number of hydrogen (or hydroxide) ions in the acid (or base). For example, a 2 M H2SO4 solution will have a Normality of 4N (2 M x 2 hydrogen ions). |
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| 35. |
Structure of salt ammonium acetate |
| Answer» Formula and structure: Ammonium acetate chemical formula is NH4CH3CO2 or CH3COONH4. Its molecular formula is C2H7NO2 and its molar mass is 77.08 g mol-1. Ammonium acetate is the salt of acetate ion COO-1 (from acetic acid dissociation in water) and ammonium ion NH4+ (from ammonia dissociation in water). | |
| 36. |
Tell me about electronegativity |
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Answer» When an element with greater z-effect(the power of nucleus of atom to attract electrons) bonds with an element of less powerfull z-effect then it attracts the bonded electrons towards itself...Example: Flourine when bonds with hydrogen then it attracts bonded electrons towards it..this tendency to attract electrons is called electronegativity.... F is the most electronegative element in the periodic table... I am sure that this will help u as it also helped me... If u liked it and also like me then please let me know by ur thnx? Tendency of an atom to attract shared pair electrons It is the tendency of an atom to attaract shared pair of electron from other atoms |
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| 37. |
Which is more hydrolysis Nh4Cn or Nacl |
| Answer» Nh4Cn is more hydrolysis than NaCl | |
| 38. |
Derivation of estimation of nitrogen by kjeldahl\'s method... |
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Answer» Who\'s soniya Wow what a love Love you shona ho skta h aaj baat na ho phn papa k pass rhega or vo bahar ja rhe h Tu aa rhi ho to aaja vrna m ja ra ram ram Chl koi na tere nakhre tere nakhre hi vekhne baaki reh gye ab fas gya yrr tetho pyar krke kisi or ko bhi na dekh skta Ib taan aaja Aaja sohniye mt tadpa mainu Sry babu Kya kr rhi h Kive aa meli barbie doll |
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| 39. |
Difference between sigma and pi bond |
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Answer» ??? M chla jau Aari ho taan aaja nhi taan m taan jashan manane ja rha hu mere bhai da birthday aa 1 hr ho gya sohniye Aa rhi h Ok Dost Bhai main Allahabad see hui Bhai m india se hu state up h Main UP se hu M india se hu I m from rajasthan Ohh yes you are right ms himani By the way Himani...where are you from...??? Hlo vansh mene aapse hi pucha tha question...... Or answer bhi khud ne hi diya tha.. ?? About wt..??? She likes me ?? So what do u like? ??.... Aayushi... ? Ohhh....baas kr...ibb...manja chhore.. Achha ji bt i dont like sry ???? Okk.... Vaise galti karne ke Baad sorry bolna.. Its good habit..... Iski toh aadat h phle glti krke sry bolne ki but dil ki buri na h thodi mahak krti h serious mt liya kro Isme sorry Kehne koi jarurat nahi...... ? Okh....I\'m sry yrr...don\'t be so aggressive... Miss aayushi... I just trying to help u.... Yaha pr send karne me problem hoti or itna sara type karne me mera bhi time jata isliye mene aapko bola ki aap search kar lo.. Vaise bhi aap yaha se read karo ya google se Baat to ek hi h... So pls... Ise negative lene ki jarurat nahi h... Me aapke question ka answer hi de rahi thi..... Excuse me...I haven\'t asked for suggestions...I have asked for answer Kive aa meli barbie doll Google pr ye question search karo..... Usme byju\'s ki site pr dekh lo.... Aap ko answer mil jageya.... Yaha pr send karne me problem hoti h... To ek baar aap us pr dekh lo... Hope U can understand well.... (Sigma bond is a chemical bond formed by the co-axial or linear overlapping of atomic orbitals of two atoms.)while( Pi bond is a type of covalent bond that exists between atoms where the electrons are on top and bottom of the axis connecting the nuclei of the joined atoms.) |
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| 40. |
Define MOT (Molecular Orbital Theory) |
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Answer» Hue na 10 mint 49 mint me bhi Aaja hun The atomic orbital lose their identity during molecule formation (overlapping) and form new orbitals termed as molecular orbitals. Molecular orbital (MO) theory is a method for describing the electronic structure of molecules using quantum mechanics. Electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the nuclei in the whole molecule. |
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| 41. |
what is the unit of a and b in vander waals equation? |
| Answer» Units of a is atm litre square Par mole square and of b is litre Par mole | |
| 42. |
What do u mean by petrochemicals |
| Answer» | |
| 43. |
What is Hydrocarbon ???? |
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Answer» The carbons containing hydrogen and carbon are called hydrocarbons. Hydrocarbons are those compound which are made up if hydrogen.and carbon only,,? These are the compounds made up of hydrogen and carbon The compounds which contains hydrogen and carbon are called hydrocarbons. a combination of a very light gas (hydrogen) and a substance that is found in all living things (carbon). Hydrocarbons are found in petrol, coal and natural gas |
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| 44. |
Explain \'sp\' hybridisation |
| Answer» sp hybridization is observed when one s and one p orbital in the same main shell of an atom mix to form two new equivalent orbitals. The new orbitals formed are called\xa0sp hybridized orbitals.\xa0It forms linear molecules with an angle of 180°\tThis type of hybridization involves the mixing of one ‘s’ orbital and one ‘p’ orbital of equal energy to give a new hybrid orbital known as an sp hybridized orbital.\tsp hybridization is also called diagonal hybridization.\tEach sp hybridized orbital has an equal amount of s and p character, i.e., 50% s and p character.Examples of sp Hybridization:\tAll compounds of beryllium like BeF2, BeH2,\xa0BeCl2\tAll compounds of carbon-containing triple Bond like C2H2.\xa0 | |
| 45. |
Uses of inorganic benzene |
| Answer» It\'s highly poisonous | |
| 46. |
Any one tell about chemistry practical please |
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Answer» In 11 class not possible Reply soon |
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| 47. |
Beta elimination reaction |
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Answer» Or question nhi h kya bhai bar bar same q daale ja rhe ho β-Elimination (beta-elimination): A chemical reaction in which atoms or groups are lost from adjacent atoms, resulting in a new pi bond: A-B-C-D ---> A + B=C + D. One of atoms lost is usually (but not always) a proton. The new pi bond is usually (but not always) formed between two carbon atoms. |
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| 48. |
Tritium has excess nuetron,but why it release alpha particles dont gamma |
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| 49. |
what is my chemistry teachers name? |
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Answer» Humme kaise pta aapko pta hona chahiye?? Aapki chemistry teacher ka name aapko hi pta hoga....hume kaise pta hoga....?? |
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| 50. |
Why co2 is gaseous while so2 is solid |
| Answer» Because of their structures. | |