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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. |
Can Boiling point of water be 0 degree Celsius?Why |
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Answer» At normal condition,that temperature is insufficient.... Yes, but at very very high pressure. |
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| 2. |
Who discovered nuclei ? |
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Answer» Ernest rutherford Ernest Rutherford. |
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| 3. |
What what is the values of the enthalpy of all element in their standard States |
| Answer» By definition, the enthalpy of formation of elements in their standard state is taken as zero. Therefore, The enthalpies of all elements in their standard states is zero irrespective of the element. | |
| 4. |
colligative property |
| Answer» colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present. | |
| 5. |
How many gm of NaOH required to prepare 10% w/v 100 ml NaOH solution |
| Answer» | |
| 6. |
Colligative properties |
| Answer» colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present. | |
| 7. |
Structure of 1,4-dioxopentanol |
| Answer» | |
| 8. |
What is dry gas |
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Answer» Gas which is free from water vapours is called dry gas. Volume of Dry gas= volume of gas -volume of water vapour present in it Dry gas is alcohol based additive used in automobiles to prevent any water in the fuel from freezing. The gas which is dry is called dry gas.✌??? |
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| 9. |
Lithium properties |
| Answer» Physical propertiesLithium is a very soft, silvery metal. It has a melting point of 180.54°C and a boiling point of about 1,335°C. Its density is 0.534 grams per cubic centimeter. By comparison, the density of water is 1.000 grams per cubic centimeter. | |
| 10. |
What is formula of acetylene |
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Answer» Acetylene is a chemical compound with the formula C2H2. It is a hydrocarbon and the simplest alkyne. C2H2 Ni pata Pata ni |
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| 11. |
Wjat is hyperconjugation |
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Answer» It is also called NO BOND RESONANCE or BAKER-NATHAM EFFECT-More the number hyper conjugative structure more is the stability Hyperconjugation is the stabilising interaction that results from the interaction of the electrons in a σ-bond (usually C-H or C-C) with an adjacent empty or partially filled p-orbital or a π-orbital to give an extended molecular orbital that increases the stability of the system. It is interaction between pie and sigma bond |
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| 12. |
Will anyone help me in making a certificate for chemistry file |
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Answer» Ya toh aaja...vrna yo gabru chhori te pitda aacha ni lagge ga Oye chhore kit h tu......sdhe 4 ho ge...abb tk nhi aaya....?? Congratulations......Vansh.....aaj report nhi hui teri id Pkka bat krenge apne frnds se milvaunga tujhe byee love you Kl 4 bje Love you toooooooo much shona ummmahhh bbye gd nyt swt dream Bye mere gabru ..nd sry plzz Yrr sun bye gn...ph ki battery low hogi..aur merko nini bhi aari h...toh tu bhi soo ja aur main bhi......love u so much....jaan..???? Yrr tu naraz ho gyi ke mjhse hmmm Kit kho gyi jigrii Ummaaahhhhh Mere gabru..? I love you too...?? Ok jaani love uuu??????? Mai kuch bhi krne ko tyra hu bss tu mt rusiyo kbhi.....plzz it\'s a humble request.. Love you ?? Dil mera bhi toota h but maine aisa kuch na kiya Yr sry bt....ek dil tut jae fir aesa hi hota...???? Yrr tu glt kr rhi h Tu fb pe shoby soni naam se id search kr aur dekh ke bta meri choice kaisi h.....mere ex ki id h Yrr aayushi m tjhko acchi ldki smjha tha or tu aisi baat kr rhi h Or haan sun 1 baat btau Aur shoby toh meri jaan h uske liye pyaar kbhi khatam nhi hoga... Classmate ke sath toh bss time pass krna h kyoki bhi time pass hi krega I understands your feelings Na aati Nhi dont make a triangle its wrong yrr Vaise yrr mere msgs pdhne me dikat aati hogi...ek toh haryanvi uper se short cuts itne maarti hu...?? Pr tera x tu usko bhi pyaar krti h Bol de usko Ohooo thadde gabru...?? Yrr dekh mere geeel ke bn ri h....mere ek clasamate h....we borh had crush on each other lekin btane ki himt kisiki bhi nhi h....hum dono ne pta h ki hum ek dusre ti psnd kra ha lekin aage te koi bol pata..in fact uske samne aate hi meri HB fast ho jati h...mai kya kru yrr.. Ib ke hoya Kaha gyi Pagal h teri frnds Chhadd Mjhse lambe h 2 but body na h mere jaisi without gym khud ko maintain kiya hai with the help of homeworkout Me too...class me sbse chhoti lekin height me mujhse sirf do ldke lambe h...meri frnds merko giraffe bolti h..?? Koi na 10 april h tera bday Mai compare nhi kr rhi thi...yrr..?? Pr sb drte h mjhse bcoz of my fitness ihave solid body my nickname is fitness freak in class Toh ki hoya m class m sbse chhota hu Pura 1 mahina 1 din..?? Hmm dont compare my mental level with any other boy Oye tu mujhse chhota ...??? Hun tu v dass de Vo toh phli baar baat krke pta chl gya tha...tu auro ki trh flirty nhi h 11-05-2004 I know how to respect girls & ladiesBhale hi meri koi sis nhi h but i have a mother Teri birth date btaiyo vth year... Hmm meri soch achhi h m baaki ldko jaisa na hu Shi pkde h...?? Best frnd Huzur zra btane ka kast kijiye Kite kho gyi pglu Acc. To u.......maine BF kis way kha h....??? Kuchh bhi bol de tu to apni h BF shi rhega Ohk mere.....kya khu yrr tne..?? Hmm aa bhi gaur karan aali bat ae Ibb nu bta va chhori ke jiske nakhre na ho...??? Ohh yrr same here 30 sec ago Yrr range chli gyi thi Or apno se sry na bolte yrr kitni bar btana pdega Kite gyi Chhori tere nakhre bhi bade att ae Ib tu gyab ho gyi Yrr mmi baithi thi pass meNaraz na hu hun Ohh chore bhadak na kre..baat krni ho toh krle....aur aagar jii me na ho toh saaf btaa de....choo na thvave Aa ki kaand ho jaata Na Aachaa sry yrr...??? Kk hoya...bura maan ga kk Haye ibb kaand ho jata...mai mere likn vali thi..vo aadat hori h mere likn ki...mere x ti bhi mai pglu kya krti lekin mere pglu khti thi...?? Luv u too pglu..??? Oyee..??mai bhai ka work complete kru thi..vo sat. ne absent tha isliye.....aur aagar na krti toh ibb tk baitha rhta aur na krn deta..usti pubg kheln ki kh ke usska work kra mne Love you????pgli Bura na maniye meri aadat h sbko preshaan krne ki X ki yaad duave h* Tu mjhe onln bulakr khud gyab ho gyi thi ne Lekin yrr ibb toh pnga chhid jaga...tu merte baat krna toh nhi chhod dega na...kde nu kh ke chhod de aak tu mne meri yaad duave h... Kit gyi Ibbe mere ques ka ans de..kyu bole tha mne jhoothi....???? Na yrrr tu meri x jaisi lgti h Bharosa na h tainu H ne bhundi sakal...???? Oye chore kit bhaj gya tu ibb...??? Hmm dekh liya shi bolta h yash Yrr trust krke btai h id..kime kaand na bitha diye...plzz Fb pe meri mmi ki id Savita attri naam se...bio me lives in Rohtak h...profile toh mmi daddy ki h...lekin cover pic me right side me mai hu ....gurudware ki pic h...dekh le Tu topic chng mt kr pic ki baat kr Aur tu mne nu bta....tu hr baat me mne jhoothi kyu kve tha..??? Sham ko Pr i wanna see you Subh ya syam ko...??? Kya krega dekh ke....mai uueee bta do bhundi sakal h Nhi jaunga pr bat 4 bje hi hogi mjhe isse phle phone na milta Yeh toh chlta h Mt jaiyo yrr plzz Mjhe bhi teri pic dekhni h Ohhhooooo......head boy....it\'s cheating Kyu Pichhle sal yash meri pic dekh ke comment kiya ki ladkiya jitni bholi dikhti h utni hoti kyu nhi h... 4 bje Haan pr jaunga nhi head boy hone ka itna fayeda to hona hi chahiye bina jaye full attendance Kl meri chhuti h.....noon me baat kr lete... Mar gye mjhe marne wale pgli Oye sunn...tujhe kl scl jana h kyaaa...??? Tu unhe bulakar pass bithati or achhe se khatirdari krti mirch ki pakodi or aqualite ki chappal red chief ka joota wiper ka danda or leather ki belt superman punch vagerah se Jaanleva h pagl....?? Terko itna interest kyu aa rha h...????? Itna gadar way of talking to na h mera Aaj pta kya hua.....market me humari bus ja rhi thi uss time 3 ladke bus ke pichhe ho liya...humare ghr tk pichhe pichhe aae....mujhe bda gussa aata h jb koi ave hi geel ho le h...yrr jaan na pichhan kyu aave h ve...C Or bta kya kya kaha teri bestie ne Kuch bhi smjh le...?? Achha ji kisi ke bhi mtlb m to tera frnd hi hu Ki tu talkative nature ka h....tera way of talking gadar h...nd u r so swt...?? Same condition many times Vo merko pagl kh ri thi...boli itni jldi kisi ke bhi pichhe pagl ho jati h... Kya btaya tune apni bestie ko Mtlb kya iss ka....ki haye rabba yha bhi....??? Meri sister bestie or tuitionmate schoolmate classmate Sachi btau toh aaj scl me mai bhi aapni bestiee ko tere baare me bta ri thi....aaj pure din maine teri hi baate ki usse Haye rabba yahan bhi Ye kon h...??? Same here.....vaise yrr kl se mai notice kr rhi hu hum dono lag bhag same h Yrr pta h subah se teri yaad aari thi 2 din se shaily se bhi na mila Ohh chhota h mera bhai bhi chhota hi h bs kamina h papa s bol dega or kuchh na drta h mjhse Aur suna koi navi taaja Kuch vo bhola itna h Yrr vo bachha h vo ni smjhega inn sab baato ko To ki hoya bol de dost hi toh hain hum Ek no ka kamina h Mushkil te suvaya h Yrr bhai jaag rha h Kittho gyi Hor bta 5 baar to puchha tjhe or upar se mjhe taane de ri 1 to jhooti gayab ho gyi Aacha thik koi gal ni Tjhe Bkwas na kre check krke ae bol h....ek baar bol ke rh gya...?? Oye abhi check kr le kitni bar pucha tjhe Kisko bol rha jhoothi..? Bbye emoji girl Tu bta jhootti M bhi shaukeen hu ladai ka Arey vah mai toh kisiko yaad hi nhi aai...meri existence ka kisiko pta hi nhi...thik shi jaa rha h vansh... Okay......... Bye bye goodnight Nahi vo bahut ladai karta h..... M to isliye baata rahi hu sirffg Hii...I\'m sry jigri...?? Yrr Okay........... Thanks for giving me some motivation......... Tum yrr mjhe kyu dara rhi ho daanto mt Koi zarurat ni h.......... He doesn\'t like this all Dont be sad yrr Ya bolna h Nhi magar jaan jaunga jldi meri fan following bhot h na Or kuch ni bolna...... Aayushi kit kho gi Jaante ho Ye hi bolna tha Ooo.... Puchh raha tha aise hi kbhi meri jaan pehchaan m ho Sanchit......... Vasse kyu Naam kya h uska Bolo Ab ni dugi.... 1st time gaali di....... Vo bhi aaj... Or ussko hi Di..... Uske upper to ladai ho gai......... Ab kabhi apni life m gaali ni dugi ??nahi batao So jao phir vrna mjhe galiyan dogi Please tell fast.... As I am having headache......... Yes Hor sunao That\'s why I love him this much that m use manati hu varna m to apne real bro ko bhi ni manati Yrr be frank with everyone He also don\'t have any sister without me.............. I dont have any real sis Mughe aayushi se kya lena Meri bestie bhi jab gussa hoti h to m bhi gussa krta hu pr jyada natak nhi krta bcoz i love her bt as a sister & frnd Hum 10 months phele mile the 1 month baad ladai hui 2 months baat ni ki.... Bahut manaya ni mana.........3 months bad fir ladai hui...............last week solve hui.......... Ab pata ni kitne months gussa rahega Abhi ruko phle aayushi ko aane do Vo assa ni h Hota h pyaar se bolna usse phir se phle jaisa ho jayega Okay bye goodnight How would I know Where is aayushi Mene gusse m bol diya tha chal nikle mughe bhi baat ni karni Uska to bahut aacha tha..... Vo bahut kush tha.......... But mere se mazak kar raha tha mughe gussa aaraha tha to saara gussa us par nikal gaya...... Rakhi bandvahi thi..... Or fir chocolate bhi di thi Ha toh mood khrab hoga uska Haa vo to mughe pata h Koi na tmhe sch m sis manta hoga 100 percent or bestiee bhi Bola chali ja yaha se mughe tere se koi baat ni karni.......... Baat mt kar liyo mere se Yaar vo bahut gusse wala h........ Oh koi na yeh to hota h Classmate h.............. Bhai manti hu...... Best friend bhi Or yeh kahan gyi Best friend (my bro) (classmate) Kon tha Nikle gaya sara gussa us par Who Ki hoya ......................he was irritating me..... So gussa aagaya Itna gussa krke tum kahan jaoge hum to milenge nhi khud jal jaoge Something happened very bad today Why youre sad What is your mistake Oooo....... Please don\'t say sorry...... Please say directly.......... Already oI am very angry....... As well as....... Very very sad today Yes why not Do you want to talk............ Sry Onln nhi aayi Don\'t change the topic Ghar par thi Waise tum kl kaha thi So I think I should leave........ ?....... Sadde naal rahoge taan aish kroge Sorry abhi 20 min nahi hue Aayushi kahan gyi Badi jaldi yaad aa gai.......... Hii ms emoji ki hal aa Kahan gyi M taan ekdum changa hi rehna hu always Yrr 1 gall dass aadika or shubham kitthe aa Kk hal chal...? Achha ji Yhi hu yrr Itna easy xam tha.. Mst Kl phir report kr ditta sanu kisine Hpp...tu khaa ja rha h baar baar Hor dass kaisa rha exam Ki dassa..??? Ab dass So I will come after 20 min........... You just continue your talks Mera bhi bhai h sath me.. Okay ....... Thik h Bhai baitha h 20 min baad pls Okay as your wish Abhi baat krenge Mst... Nahi taan Or jigri kive aa Gussa h kya....? Hii Oye Oh so we will talk about it after 20 min Ya it is same for every topic and subject Yes For topic group 1 element Yes....... May I help you |
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| 13. |
Method to change hard water to soft water |
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Answer» Adding washing soda (na2co3.10h2o) 4 for permanent hardness 2 for temporary hardness Tjere are 6 method |
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| 14. |
which is the hardest substance on earth |
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Answer» It\'s diamond like my cute GF? Diamond Yes...diamond is the harder substance but not the hardest the hardest substance is warzite boron nitride.? Hope it\'ll help u... Diamond.... |
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| 15. |
What is threshold frequency |
| Answer» Threshold frequency is the minimum frequency of the light which causes electron to be emitted by a metal surface....this is called threshold frequency. .. | |
| 16. |
Structure of diamonf |
| Answer» | |
| 17. |
Will you tell me about group 1 elements |
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Answer» Vansh koi ques post kr.... Vansh you are most talkative ? Tum sb kitni baate karte ho Hiiiiiii...........Yash Nema....? Hii....Vansh...? Ok Ab dekh mera bachpan ki pic h profile Prajapati vansh User name bta tera Tu hi bta de abhi report hoga or sb kuchh gayab 4 posts h 1 photo h mirror m or 1 selfie h lete hue Ni mil raha Black tshirt m selfie Profile pic kya h Or me.....follow kr raha hu...idhr mt bolna username mera...kuch sir mam or school mates....use krte h ye app Abhi follow kr Kk 4 posts h sirf 3 following h Prajapati vanshCarmelian Me idhr ni bta skta...tu apna bta Chl apna insta account bta jldi Achha ji Are to...fake email dl jata h idhr 2gb data daily roz install krunga Hmm yr koi na 276 google accounts h mere Pta nii...shyd gai Udita gyi kya Accha...hojati h...log kr dete h 06 feb ko Yrr kl aadika vagerah se baat krke soha subah utha toh sb kuchh reported mila Or farewell kb h? Kisne krdia report??? Hmm..mujhe pta...h real name uska...apni behan ka kese bhul skta hu??? Tu apni bta phle Yash bhai baat toh hm kr rhe h pr report mera account hi hoga dekh liye To tum pkka rose hi ho Okay bye goodnight Yes...me usiki baat kr raha hu...uski insta id chahiye thi...? Uska real name bhi rose nahi h.......... Kuch aur hi h.... Jo usne ni bataya tha Im here Hey bhagwan hoga koi...?? Rose Choudhary Suman nahi...... Hey vansh where are you Ok...pura naam rose ka...? Tum suman ho kya Okay....... Same dialogue vansh? Ok..claim down...wese koi girl idhr itni asaani se naam ni bta ti thi..isiliye doubt tha M us rose ki baat Kar rahi hu jisne tera naam Pikachu rakha tha ??yash tu na sudhrega Shyd tum koi or rose....ki baat kr ri ho? What do you mean by sure..... My name is udita means udita You don\'t talk to much with her Mere 10 feb se h 10 chemistry12 bio15english17phy19physical22fineart R u..sure..that yr name is udita? I know each and every thing about her Okay I m telling my name..... My name is udita I knows her from 10 class we had met @ cbse guide I am her best friend...... Mera...20th ko last h ......can\'t say anything Ap rose ko kese.... jnti ho Naam ko chhupa kr hme kyon sata rhe ho Jaan pehchaan bhi ho chuki or dost bhi bnne ja rhe ho 20th Jan se practicals 1st Feb - physics No I am not...... But how do you know rose Aplogo k...annual kb se h bese Toh Nii samyukta sharma nii Are you rose Nii samyukta sharma ni Who is pikachu Na mjhe bhi na pata Means what Oh you re talking about samyukta sharma Bese emoji girl apne frd mese koi h kya...me pehchana ni??? Rose dikhi thi kuchh din phle samyukta se insta pr baat hui ??this is not good Pikachu Please I said don\'t leak my identity Pikachu H...rose ya samyukta dikhi Yash se bol rha tha ........what is going on.......... Can\'t understand anything Hmm mjhe kl aadika shubham or aayushi mile thay Saying to whom Hmm Btw...apnafrd circle tut gya? Ooo hooo Ohhhhh bete...? Na m sudhra tha na m sudhrunga Bigda hua hokr bhi sbke dilon m utrunga Aajaao..... Come I am on the door Pikachu.... pechana ni to koi ni but agar pechan liya to chup rahna...... I don\'t want to open my identity Aji tmhe chhodkar hum kahan jayenge tum kaho to phone chlate chlate wahan aa jayenge Hi...emoji girl? Ye vansh....abhi tk...sudhra ni kya?? What Hello..... Gooooone or here Arre wah bete kaise yaad aa gyi hmari Hello yash But really.......... Great lines Hii... Kya baat Kya baat kya baat Bs itni tareef na karo zalim sharam bhi sharma kr khe bs kr pgli pyar ho jayega But it would be great if we talk Ya I can see Really nice Wah Wah Wah Wah Wah Wah.... But had done it i types very fast Pr tum gaana sunoKoi deewana kehta h koi pagal samajhta h Magar dharti ki bechaini ko bs badal samajhta h tu mjhse dur kaisi h mtujhse dur kaisa hu ye mera di smjhta h ya tera dil smjhta h And please ab Likhne mt lagana varna time lagata h....... Better we should talk Okay..... Just don\'t take words seriously....... Achha but i am rapper Ooooooo hooooo......... To ji kar do dewana..... Aaj tak to hui ni kisi ki..... Tum try kar lo M achha gaata hu sunogi to deewani ho jaogi ?? M aacha ni gaati....... Suno ge to chale jao ge Kuchh bhi suna do ms emoji Kya sunau Or sunao Oh Ya.........same state.... But I am from muzaffarnagar Oh wow same state Im fine & from UP distt amroha city gajraula country indai I am from Uttar Pradesh from where you re From where are you I am fine what about you Oh so ms emoji how are you Yes I am Are you here My name........just call me emoji girl only Whats your name Over soo now what....... No im here Okay Hey.............. Are you here or goooooone I change my words according to my mood I think ? if you want to make file on it then you should refer it to google What you will change according to your mood On group 1st elements you have to make project file ?............OMG Yes why not Yes i think but i want it for my chemistry project file May I ask something...... If you not mind Oh sry i will change it according to my mood Is it enough Don\'t call me that..... Alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids). Sodium and potassium are the sixth and seventh most abundant of the elements, constituting, respectively, 2.6 and 2.4 percent of Earth’s crust. The other alkali metals are considerably more rare, with rubidium, lithium, and cesium, respectively, forming 0.03, 0.007, and 0.0007 percent of Earth’s crust. Francium, a natural radioactive isotope, is very rare and was not discovered until 1939. I know it meri maa Then wait for a while 1st group elements are also called alkali metals I know this i want it in detail The alkali metals consist of the chemical elements lithium, sodium, potassium, rubidium, caesium, and francium. Together with hydrogen they comprise group 1, which lies in the s-block of the periodic table. All elements Yes About?????? No i asking about Are you asking the name |
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| 18. |
Why does lithium does not show photoelectric effect? |
| Answer» The photoelectric effect is the emission of electrons when light hits a material. Since Lithium has high ionization energyso, it does not lose its electrons easily and hence does not exhibit photoelectric effect. | |
| 19. |
how many atoms of oxygen are required for the complete combustion of 5.8g of butane |
| Answer» | |
| 20. |
What is the difference between anamolas behaviour and diagonal relationship |
| Answer» ANOMALOUS BEHAVIOR OF Li AND DIAGONAL RELATIONSHIP WITH Mg: It is observed for 3 elements of periodic table that they resemble more with their diagonal element than their same group elements. This property is named as Diagonal Relationship. | |
| 21. |
Are you here ms aadika |
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Answer» Or do you know me i had proposed you in board exams Pls help me |
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| 22. |
Formula of work |
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Answer» Work =force × displacement cos theeta Work = Force × Displacement |
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| 23. |
What is setting of cement |
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Answer» When water added with the cement then it get hydrolyse to form hard mass , known as setting of cement When gypsum present in cement is mixed with water than the cement hardens up which is known as setting of cement |
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| 24. |
Substances having same number of electrons but different number of protons are called as ??? |
| Answer» Isotones | |
| 25. |
Atomicradius of cra is less than that of al |
| Answer» | |
| 26. |
Steric no. CH4 is??? |
| Answer» Steric no. CH4 is 4And its hybridization is Sp3 | |
| 27. |
Explain Wolmann Rx^n! |
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Answer» Magnus effect is nothing but a force generating by a solid spherical or cylindrical body immersed in fluid when it is in relative motion b/w body and fluid.. I think i can help u You have studied fluids so help. Pls explain me magnus effect! I think so because i hasn\'t studied it yet It\'s an organic reaction to pair up two aryl hallide into biaryl hallide usi g copper metal. I hope it\'s correct! Sure There are si many test series ,solved papers n online exams and practice sheets too in this app but still if u think it\'s useless then delete the app I think its ullman reaction |
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| 28. |
What is dynamic equilibrium? |
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Answer» Sorry for late answer! Chemical equilibrium What Equlibrium which is in motion. ex= take a glass of water put it bellow the tap. Open tap so that drop wise drop water came in glass know make same hole in glass so th drop wise drop water will came out of it . The this system is called dynamic eq.. Hey mate plzz help me The equilibrium in whichForward rexn speed = Backward rexn speed |
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| 29. |
What is chemical formula for citric acids.???? |
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Answer» It is C6H8O7 U can search it on google bro.. |
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| 30. |
Difference between the alkaline metals and alkaline earth metals |
| Answer» \t\xa0PropertiesAlkaline earth metalsAlkali metals1.Physical propertiesComparatively harder. High melting points. Diamagnetic.Soft, low melting points paramagnetic.2.ValencyBivalentMonovalent3.Electropositive natureLess electropositiveMore electropositive4.HydroxidesWeak bases, less soluble and decompose on heating.Strong bases, highly soluble and stable towards heat.5.BicarbonatesThese are not known in free state. Exist only in solution.These are known in solid state.6.CarbonatesInsoluble in water. Decompose on heating.Soluble in water. Do not decompose on heating (LiCO3\xa0is an exception)7.Action of carbonDirectly combine with carbon and form carbidesDo not directly combine with carbon8.Solubility of saltsSulphates, phosphates fluorides, chromates, oxalates etc are insoluble in waterSulphates, phosphates, fluorides, chromates, oxides etc are soluble in water.9.Reducing powerWeaker as ionization potential values are high and oxidation potential values are low.Stronger as ionization potential values are low and oxidation potential values are high10.Electronic configurationTwo electrons are present in the valency shall. The configuration is ns2\xa0(bivalent)One electron is present in the valency shell. The configuration is ns1\xa0(monovalent) more electropositive\t | |
| 31. |
What do you understand by the term hydride gap? |
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Answer» Thanks ? The metals of group 7, 8, and 9 do not form hydrides. This region is referred as Hydride gap in modern periodic table. These metals have low affinity for hydrogen in their normal oxidation state.For eg.- Mn, Fe, Co, Rh, Hf, W, Os etc\xa0 |
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| 32. |
Who was father of chemistry |
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Answer» Antonnie Lavoisier Antonnie lavoisier Antoine Lavoisier was the father of Chemistry Chemistry is the branch of science which deals with the composition, structure and properties of matter. Antoine Laurent Lavoisier is called the father of chemistry. J J Bergilius |
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| 33. |
Le chetlers principal |
| Answer» If any of the factors that determine the equilibrium condition, of a system is changed, the system will move in such a direction so that effect of change is reduced or nullified | |
| 34. |
Why petrol evaporate fastly |
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Answer» All liquids can evaporate at room temperature. Petrol, or gasoline, evaporates faster than most liquids because of its weak intermolecular attractions. Petrol is a mixture of hydrocarbons with the main constituent being octane, C8H18. Octane is a non-polar molecule. The only intermolecular attractions it has are weak dispersion forces. The molecules have a range of kinetic energies, and those with the most kinetic energy escape at the surface and enter the gas phase. Due to weak intermolecular attraction |
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| 35. |
Define Group-13 |
| Answer» | |
| 36. |
Define solvey process |
| Answer» An industrial process for obtaining sodium carbonate from limestone ammonia and brine. | |
| 37. |
Formation of benzene |
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Answer» Three molecule of ethyne on passing red hot iron tube at 873 k . By decarboxylation. Reduction with phenol. C6h6 By writing |
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| 38. |
स्टेशनरी फॅसिनो क्रोमॅटोग्राफ इ टेक्निक |
| Answer» | |
| 39. |
Stationary phase in chromatographyic techniques |
| Answer» Search on Google.illiterate human | |
| 40. |
Derive the relation between cp and cv |
| Answer» Cp- Cv=R | |
| 41. |
Why alkali metal are not found in nature |
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Answer» Hahahahahaha Alkali metals are highly reactive in nature due to low ionization enthalpy andstrong electropositive character.They do not occur in free state and are always combined with other elements. |
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| 42. |
Whose isotope is used for primary treatment of Cancer? |
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Answer» Ye farhat hrr me apni tang adata hai.???????? Cobalt 60 Thanks Cobalt 60 radioisotopes |
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| 43. |
Briefly discuss some redox reactions occurring in aqueous solution |
| Answer» Oxidation and Reduction: Redox ReactionsOxidation and reduction reactions occur simultaneously. When oxidation occurs in one substance, reduction takes place in the other substance. Such reactions are called redox reactions. In the name ‘redox’, the term ‘red’ stands for reduction and ‘ox’ stands for oxidation.CuO + H2 → Cu + H2O\xa0Fe3O4 + 4H2 → 3Fe + 4H2OIn both, the above reactions, oxidation and reduction occur simultaneously. One of the reactants acts as an oxidising agent and gets reduced, while the other acts as a reducing agent and gets oxidised. | |
| 44. |
Important questions of organic chemistry |
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Answer» Db7yjkyfvkydsduicdti everything is important except nothing Sir , All the questions are important of chapter (ORGANIC ) like what is organic chemistry , u should be deep knowledge about the chapters and read the line to line . Good day Sir . |
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| 45. |
What is the basic principle of chromotography |
| Answer» | |
| 46. |
4 bcl+3liAlH4 |
| Answer» It gives : - 2B2H6 + 3LiF + 3AlCl3 | |
| 47. |
Why ice float on water ? |
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Answer» During formation of ice, some gaps are left due to H - bonding; that\'s why the density of becomes less than water and gence it floats on water. Ice float on water because the density of ice is less than water |
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| 48. |
Convert butene into 2 bromobutane |
| Answer» By addition of halogen halides or halogen acids ie HBr | |
| 49. |
Give two tests to distinguish between alkanes alkenes |
| Answer» Combustion and sodium carbonate are two metthod from which we can distinguish between alkane and alkene. | |
| 50. |
Number of oxygen atoms in 8g of ozone is |
| Answer» 6.02×10^23÷2 | |