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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 4401. |
Find the molality and molarity of a 15% solution of when its density is 1.10 & molar mass = 98 amu. |
| Answer» | |
| 4402. |
What is atomic structure |
| Answer» An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small; typical sizes are around 100 picometers. Components: Electrons and a compact nucleus of protons and neutronsMass range: 1.67×10−27 to 4.52×10−25 kg<br>Wait me ek q krti hoon ok<br>Nya nii hey nobita wale pr<br>Vese hr jgah late hoga<br>Ok kr new q<br>Dusre q pr a<br>Yha bhut late ho rha h<br>Marvaega kya<br>Naa ye pommy ka phone nhi hai<br>Are or kidhr aaun idhr hi baat kr le please<br>Direct msg kr rha hu<br>Tu khi aur aa ye bhut late ho rha h<br>Khi nii<br>Koi nii tu bol kuch bhi<br>Khan gya ab<br>Ya bhut late jaa rha h tera bhi bhut late aarha h<br>Pooch mujhse mene khana kaya yaa nhi<br>Are meto msg kre jaa rha hu<br>Me fir jaane waali hoon<br>Kr naa baat<br>Kya kr rhi h,??<br>I also love u meri jaani ,?<br>Vrna tera mooh tod dungi ok<br>Sun veeru tu ab mujhse achhe se baat kr<br>Veeru sach me yaar l love you pr me bhut mjboor hoon<br>Are ab kya kre iss lockdown me<br>Pr ab me issse alg bhi nhj ho skti<br>Pyaar krne ki sja itni bdi ho skti hai mujhe nhi pta tha me krti hi nhi<br>bta ?❤️❤️<br>are yhi to hu<br>tera decision to hukum hena ?<br>ok thk h mujhe koi problem nii h<br>Pr ab veeru khan gya use bula do koi ??<br>Koi nee sis. Tm aaram sa baat karo<br>Koi kese samj pae kisi ke dil ka afsana ??<br>Veeru sun ab do din or baat kr le fir do din ke baad dekhenge ok that\'s my last decision<br>Ptani tune inki photo lithi kya<br>yha bhut awkward lgrha h<br>Ha thk h<br>Are ye itne bde kese ho gye words ??<br><font size = 10><font color = purple>ab me last bolti hoon ki me or veeru do din baat or krenge please or doosra mera bhut dimag khrab hai veeru<br>thk h<br>are yha pr rhna data h<br>Thumari dono ki family ko thumara bara ma pta ha kya<br>Naa me nhi hoon<br>Veeru hmari family me kitni problem ho gyi fir bhi hm ek doosre ke upr pagal hain ?<br>Ara tm dono insta. Pr nee ho kya<br>Veeru try to understand<br>?<br><br>Wait veeru<br>Kha h tu teri bhut yaad aarhi h ab kha cli gyi h ptani me jaarha hu ok ❤️<br>Jo krna hai kro mujhe kya.....lekin mai ab bhi kahunga ye sb faltu hai......focus only your studies...<br>Hmm sirf do din baat krenge ok<br>Royal bhi plz vo sir 4 days ka liya he to bol rhi ha or vo zaida q b nee baia ge<br>Veeru please smj lo yaar ??<br>Ok royal bhai pr please thoda sa to smjho hm apni pdai bhi krte hai<br>Koi nee muza koi prob nee ha ekta or veeru i wish ki tm dono ik ho jao<br>Kha bo veera??<br>Veeru call mt krna please or naa hi koi message ok<br>Tm dono insta. Pr ho kya<br>Look mai in sab ke baare me jyada to nhi janta lekin ye sb falTu hai......focus on your studies.......<br>Oh bhaiyon behno sab suno hm do din baat krenge ok bass ??<br>Thk h<br>Hnn tm dono insta. Pr baat kr liya karo<br>Baat krn<br>Are yha thk nii h<br>Are royal bhai kya loge sach ko manne ka<br>Oo hello veeru<br>????<br>Veeru??<br>Tmm mathura sa ho ?? vha ka to bhagwan ko apna piyar nee mila to tma kaisa mila ga ?<br>Tum ekta nhi ho mujhe pta.....<br>Bass me 2 din baat krungi ok<br>Kya baat ho rhi h<br>Sorry sis<br>Tyagi behen hai bhai nhi<br>City mathura<br>Hnnshi kha royal btt mera name he aaisa ha ma kya karu<br>Royal bhai ??<br>Oo sorry city ka name??<br>Bass thodi si baat kr lun me use bhut love krti hoon bhai sach me<br>Bhai nhi behen hai tyagi ladke hai<br>Ekta not ikta bhai<br>Hnn ma thumara drd smz sk ta hu ikta<br>Bhai aap btao me kya krun<br>City ka name<br>Haa<br>Oo to tm ik he city ka ho kya ya bato<br>Bass thodi baat kr loon usse fir nhi krungi<br>Ab to darr lgta hai bhai<br>Pta nhi kabhi hmari family kabhi friends ??<br>Oo pr kyou<br>Hmm<br>Bhai sach me main bhut dukhi hoon pta nhi baar baar koi naa koi problem mere or veeru ke beech me aa hi jaati hai<br>Matlub your lover<br>Veeru meri jaan<br>Ya veeru kon h<br>Ok prince tyagi bhai ??<br>Yaar veeru bhut rona aa rha hai chod agr god ne chaha to dekh lenge ok<br>Ekta hai mera name<br>Nobita tu bhi sun le mera bhi dimag khrab ho gya hai bhut joron se or veeru ab call bhi mt krna<br>Your real name<br>Tyagi to ma hu , sizuka<br>Ab sirf chaar din baat krungi fir nhi krungi ok bhai<br>Me tyagi nhi hoon mere bhai ??<br>Hello sizuka<br>Kya bhi mana kya kha tma hnn<br>Jhuthe logo se mai baat nhi krta isiliye byee tyagi sis...<br>Hello royal bhi how are you<br>Hello tyagi sis...<br>Oh...<br>To please sia khi aur jakar ye sb kro...<br>Aap mujhe nhi jaante me first time inti baat kr rhi hoon<br>Hello both of you??<br>Me ekta hoon bhai<br>To kon ho bataoo verna mai report krr dunga<br>Nhi me koi mahak ya sowndu nhi hoon ??<br>Kon ho ye bataoo sowndu ho<br>Krne nhi de rhe ho bhai ??<br>Yaar char paanch din ke liye baat kr rhe hain vo bhi tum k<br>Hello<br>Who are you<br>Ok aap hmare q me mt aana<br>Ek din khud Pachtaoge.....<br>Or hm jyaada q thode hi bna rhe hain isliye bhai aap ese mt bolo<br>Kon ho tum.....hum log kabhi kabhar ek question me krte hai.....aur baat krte fltu ke kaam nhi krte...<br>Ok<br>Or me mahak nhi hoon<br>Oh bhai jb tum log baat kro to kuch nii<br>Tum logo ne iss app ko kya koi dating app smjh rakha .......this is study app ye sb krna hai to khi aur jakar kro......<br>Mna kiya tha na maine<br>Tum mahak ho na.....<br>Who are you....do you know me...<br>Veeru idhr aa jaa yaar udhr junior ko chod kr<br>Ok<br>Me jyaada der tk nhi rhungi fir sab log uthkr aa jaaenge isliye<br>Ek kaaam kro class 5 me phuncho jo baat krni hai udhr kr lo<br>Hmm pd skte hain<br>Dekho isme notification to aati nhi hai isliye dekh phle q send kro ok fir upr option hai naa all q ka us pr click kro to aapke q ka reply milega<br>Isme sab log chat pd skte h<br>Achah h<br>Kya krun<br>Mujhe samaj nii aaya tu kr<br><br>Tum itna slow kyon ho jese mene bola vese nhi kiya kya<br>Sach me<br>Wow i like it??<br>Atomic structure refers to the structure of atom comprising of a nucleus in which the neutron and proton are present | |
| 4403. |
Find the weight of sulpuric acid in 500ml of 2m of solution |
| Answer» 480.2N(newton) | |
| 4404. |
Discovery of oxygen |
| Answer» Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an English chemist, independently, discovered oxygen in 1774 and published his findings the same year, three years before Scheele published. | |
| 4405. |
How can we find the weight in gram and molecular weight of magnesium carbonate? |
| Answer» Weight in gram(s) can be found as like: Atomic mass of Carbon is 12 amu(atomic mass unit) but when we write 1 mole of Carbon it becomes 12 grams. Similarly for molecular mass(not weight) for Magnesium Carbonate (MgCO*3): atomic mass for magnesium is 24g, for Carbon it is 12g and Oxygen it is 16g. So, just add it according to the formula of the compound. Molecular mass of Magnesium Carbonate: 24+12+16*3=84g. Thanks:) | |
| 4406. |
What is aufbau\'s principle |
| Answer» RULES OF WRITING ELECTRONIC CONFIGURATION: “It is the number of electrons in different orbitals. “There are certain set of rules that are followed:Aufbau principle: It states that in ground state of atom, the orbitals are filled in order of their increasing energies. That is electrons first occupy the lower energy orbital then higher energy orbitals are filled.According to it:\tThe lower the value of n+l for an orbital, the lower is its energy and is filled first.For example: Out of 2s and 2p ,2s is filled first as n+l for 2s, is 2+0=2 and for 2p it is 2+1=3. Therefore, 2s is filled first.\tIf two orbitals have same value of n+l , than the orbital with lower value of n is filled first.For example: Out of 3p and 4s, n+l for both is 4 . Therefore, 3p is filled first as it possess lesser value of n.\xa0 | |
| 4407. |
More stable hydrogen bonding?F-H---F-HF-H---F^-.Why |
| Answer» Tere ko ni aata kya???? | |
| 4408. |
Most ionic Fe3O4 or MnO .why? |
| Answer» Fe3O4 | |
| 4409. |
Resonance structure for C6H5OH |
| Answer» | |
| 4410. |
Which of the following is most ionic ?1)Fe3O42)MnO3)SnCl44)CO |
| Answer» Fe3o4 | |
| 4411. |
Cyclohexylamine is more basic than aniline. Explain |
| Answer» Aniline and cyclohexylamine both hane NH2 group and six carbon ring but the difference in basicity lies in a manner that aniline is a weak base then cyclohexylamine because aniline is an aromatic ring, because of the electron-withdrawing effect of the phenyl group aniline is a weak base.The unshared ellectron pair of electron on nitrogen atom is present in conjucation with the benzene ring and becomes less available for protonation because of resonance | |
| 4412. |
does free shells exist |
| Answer» Yes it does<br>I think shell is just an imagination....it dosent exist at all | |
| 4413. |
Does fahrenheit scale can be found negative? |
| Answer» Yes<br>Yes<br>Yes it can be negative | |
| 4414. |
What are the physical and chemical properties of air? |
| Answer» Physical : it is gas Chemical: it is mixture | |
| 4415. |
Define reposition. |
| Answer» | |
| 4416. |
How will we find mole fraction |
| Answer» Thanks a lot<br>No. Of moles of solute \\total moles<br>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.The molar fraction can be represented by X. If the solution consists of components A and B, then the mole fraction is,Mole of fraction of solute = moles of solute / (Moles of solute + Moles of solvent) | |
| 4417. |
Explain why BF3 exists whereas BH3 does not? |
| Answer» Bh3 molecule is an electron deficient molecule in nature since the 6 electrons are around the \'B\' atom. Hydrogen being small in size, plus electron deficient it cannot donate electrons to boron, hence to exist, Bh3 goes under dimerization so as to fulfill the electron deficiency and attain stability.Hydrogen being small in size dimerization is possible.Bf3 is also deficient but because of larger size of \'F\' atom, it cannot undergo dimerization, so it exists as Bf3 with a partial negative charge in boron and partial positive charge on fluorine. | |
| 4418. |
How to redox reaction important in our life |
| Answer» Redox reactions have many applications in our daily life. The most common example is combustion; where in oxygen gets reduced while carbon gets oxidized like burning of fuels in automobiles etc. Second application is in batteries or electrochemical cells used in invertors and dry cells which use oxidation-reduction reactions to produce an electric current. Oxidation-reduction reactions are responsible for the spoiling of food. Rusting of iron is also an example of redox reaction. The Enzymes in our human body regulate oxidation-reduction reactions occuring inside the body.Photosynthesis and respiration both are oxidation-reduction or redox reactions. | |
| 4419. |
Whole chemists reaction.... |
| Answer» | |
| 4420. |
Name an common antacid |
| Answer» Baking soda or milk of magnesia<br>Milk of magnesia<br>Baking soda is common antacid<br>Baking soda<br>BAKING SODA<br>Baking Soda n Milk of magnesia....<br>How protect CORONA virous ??<br>\tAntacids are used to cure indigestion in a body.\tThey are group of mild bases and have no toxic effects on body.\tThey are basic in nature so reacts with excess acids in stomach and neutralise it.<br>Baking soda | |
| 4421. |
Define Equilibrium. |
| Answer» 11 gaya<br>Are you in 10th or 11th<br>Where did you go ?<br>Hello<br>For a certain chemical reaction, the equilibrium constant is defined as the ratio between the amount of reactant and the amount of product which is used to determine chemical behavior.At equilibrium, Rate of the forward reaction = Rate of the backward reactioni.e. rf = rb\xa0Or, kf\xa0× α\xa0× [A]a[B]b = kb × α × [C]c\xa0[D]dAt a particular temperature, the rate constants are constant. The ratio of the rate constant of forward reaction to the rate constant of backward reaction should be a constant and is called an equilibrium constant (Kequ). | |
| 4422. |
Calculate first excitation energy of electron in hydrogen atom |
| Answer» Excitation energy of any orbit can be found out by this formulaEn = -13.6/n2For hydrogenE1 =-13.6/1E1=-13.6Ionization energy is the energy required to remove an electron from the valence shell of any atom , for hydrogen the ionization energy and excitation energy are equal i-e -13.6 eV | |
| 4423. |
What is the maximum number of significant figures |
| Answer» Infinite | |
| 4424. |
What\'s is resonance with examt |
| Answer» Resonance is the shifting of pi bond,,,or rotation of pi bond...forming 2 or more similar Lewis structure..Ex. Chlorination of acetic acid<br>Resonance structures are sets of Lewis structures that describe the delocalization of electrons in a polyatomic ion or a molecule. | |
| 4425. |
What is permutit? |
| Answer» Permutit is a complex inorganic salt. It is a manmade zeolite. Chemical formula of zeolite is Na2Al2O3 .nSiO2.xHO . It is also known as Sodium aluminium silicate. Zeolite is made up of microporous minerals which have the capacity of exchanging ions. Hence Zeolite is used to remove the hardness of the water. Process of removing the hardness of water by using Permutit is called a Permutit or zeolite process. | |
| 4426. |
Neil bohr theory ? |
| Answer» In 1913, Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted. | |
| 4427. |
What are the major causes of water pollution |
| Answer» Acid rain,industial wastes,some domestic work of human and due to leaves,grass,trash etc.<br>Dumping industrial waste into rivers without proper treatment..Use of chemical detergents | |
| 4428. |
What is hybridisation of sf4 |
| Answer» In order to determine the hybridization of sulfur tetrafluoride, you have to first understand its Lewis structure and the number of valence electrons that are present. The SF4 molecule consists of a total of 34 valence electrons. Here 6 will come from sulfur and each of the four fluorine atoms will have 7 electrons. | |
| 4429. |
What is the oxidising state of K in ko2 |
| Answer» In kO2 oxidation state of each oxygen is -1/2.let oxidation state of k in KO2 be xx+2(-1/2)=0x=+1hence, oxidation state of k is +1 | |
| 4430. |
Why is the general configuration of f orbital (n-2)f1-14 (n-1)d 0-1 ns2 |
| Answer» Electrons are filled acc to their energy by using hunds pauli afbhau principle ... | |
| 4431. |
Difference between hard and soft water |
| Answer» Hard water contain calcium and magnesium choride and sulphateSoft water only contain calcium and magnesium hydroxide<br>Hard water... is water that contains an appreciable quantity of dissolved minerals (like calcium and magnesium).Soft water... is treated water in which the only ion is sodium. | |
| 4432. |
Except which two elements the compound formed by s-block elements are predominently ionic in nature? |
| Answer» Lithium and Magnesium | |
| 4433. |
Wgat is quantum number |
| Answer» *what | |
| 4434. |
52 moles. Of Ar |
| Answer» | |
| 4435. |
Test for NaCl |
| Answer» | |
| 4436. |
Explain quantum numbers |
| Answer» Quantum numbers: Quantum numbers are numbers that designate and distinguish various atomic orbitals and electrons present in an atom.Four quantum numbers are used to define the state of an electron completely, namely principal quantum number, azimuthal quantum number, magnetic quantum number and spin quantum number.Principal quantum number:Principal quantum number determines the energy shell in which an electron revolves around the nucleus.Principal quantum number is also known as the major energy level.Principal quantum number is denoted by the symbol n.Principal Quantum Number (n) = 1, 2, 3, …….\xa0 | |
| 4437. |
NH3 is larger then NF3 |
| Answer» Dipole moment of NH3 is more than NF3 | |
| 4438. |
E andZ confurgation |
| Answer» | |
| 4439. |
What is valence bond threory? |
| Answer» | |
| 4440. |
Write the general electronic configuration of d-block elements? |
| Answer» Generally, the electronic configuration of these elements is (n-1) d 1–10ns 1–2. The (n–1) remains for the inward d orbitals which may have one to ten electrons and the peripheral ns orbital may have one or two electrons. The d–block involves the middle area flanked by s– and p– blocks in the periodic table. The very name "transition" given to the elements of d-block is simply because of their position amongst s– and p– block elements. The d–orbitals of the penultimate energy level in their atoms get electrons leading to the three columns of the transition metals, i.e., 3d, 4d and 5d. The fourth line of 6d is still inadequate | |
| 4441. |
Explain electronic configuration in detail |
| Answer» In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.<br>Electronic configuration is defined as the distribution of electrons into various orbitals of an atom by using three principles.Aufbau principle states that in the ground state of the atoms the orbitals are filled in order of their increasing energies. Electrons first occupy the lowest-energy orbital and then enter into successive higher energy orbitals. The electrons enter into various orbitals in an increasing order of (n+l).Pauli\'s Exclusion Principle states that: An orbital can have maximum two electrons with opposite spin.Hund\'s Rule of Maximum Multiplicity states that: Electron pairing in p, d and f orbitals cannot occur until each orbital of a given sub-shell contains one electron each or is singly occupied.\tWe can represent the electronic configuration of atoms in two ways.\tOrbital diagram method\tnlx methodElectronic configuration of the first ten elements - Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon given in following table.After filling the 2p orbitals, the electrons fill into the 3s and then the 3p orbitals.The electronic configurations of most of the elements can be write in a simplified manner or condensed form.The eleventh electron in Sodium will enter the 3s orbital. Therefore, the electronic configuration of Sodium can also be written in a condensed form as [Ne] 3s¹.Following table gives condensed form for elements from Sodium to Potassium. | |
| 4442. |
What happen when to lattice enthalpy of chloride of alkali metal down the group and why |
| Answer» | |
| 4443. |
Why is benzene extra ordinarily stable through it contains three double bonds? |
| Answer» Bond lngth longer<br>Cyclic resonance | |
| 4444. |
Tell me the difference between orbit and orbital. |
| Answer» Orbit -1 It is a well defined circular path where the electrons revolve 2 It represents the planar motion of electrons around the nucleus 3 The number of electrons present is 2nsquare electrons Orbital -1 It is a 3-D region | |
| 4445. |
State the main advantage of molality over molarity as the unit of concentration |
| Answer» State the main advantage of molality over molarity as the unit of concentration | |
| 4446. |
Construct M.O.T diagram for N2 molecule . Calculeta its B.O and also explain its magnetic properties |
| Answer» | |
| 4447. |
Hlo koi hai.....time pass ke liya |
| Answer» Bolo<br>Ys ma huin<br>Time pass kyu exam finish ho gaye kya tumhare<br>Haan main hu | |
| 4448. |
What is stoichiometric coeeficient |
| Answer» Let take a question2C + 2O2-->2CO2 here , 2 is the stoichiometric coefficient of C,O2,CO2 | |
| 4449. |
Purification of water soft water and hard water explain |
| Answer» | |
| 4450. |
What is electro mass |
| Answer» | |