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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.
| 701. |
What is continous spectrum |
| Answer» | |
| 702. |
Hey guys....can u tell me the important questions from the chapter s block elements |
| Answer» ➡️Why do beryllium and magnesium not impart colour to the flame in the flame test?➡️In the Solvay process, can we obtain sodium carbonate directly by treating the solution containing (NH4)2CO3 with sodium chloride? Explain.➡️Why are BeSO4 and MgSO4 readily soluble in water while CaSO4, SrSO4 and BaSO4 are insoluble?➡️Name an element from Group 2 which forms an amphoteric oxide and a water soluble sulphate..... these are the questions which was asked in my chemistry exam. ✴️ nd yaa there is nothing in important question it\'s better to study whole concept.. ? | |
| 703. |
Which quantum no/s define energy of an electron in a multielectron atom |
| Answer» | |
| 704. |
Note of hydrogen peroxide |
| Answer» | |
| 705. |
Hey guys what questions can be ask in practical ex... |
| Answer» | |
| 706. |
Calculate the energy associated with the first orbit of he+ what is the radius of the orbit |
| Answer» | |
| 707. |
Which has lower second ionisation enthalpy - Na or Mg? |
| Answer» Na | |
| 708. |
Passing criteria for class 11 in kvs |
| Answer» In KVS...passing criteria is 33% atleast in every subject | |
| 709. |
Lil iodide is more soluble than ki in ethanol |
| Answer» | |
| 710. |
What are electrophiles? |
| Answer» it contain positive charge and can accept a electrons. eg H+ is an electrophile which can accept a pair of electron from OH- to form H2O<br>Electrophile: A electrophile is a species (cation) which is electron deficient hence attacked by negatively charged or electron rich species.It participated in a chemical reaction by accepting an electron pair from nucleophile.common electrophiles are Cl+, NO2+, HSO3+\xa0etc.<br>Electrophiles means electron loving species. Or in other wordsThe positively charged or neutral species which are deficient of electrons and can accept a pair of electrons are called electrophiles. Eg., H3O+, Cl+, NO2+, BF3, AlCl3, etc. | |
| 711. |
Ordinary dry cells are not rechargable |
| Answer» | |
| 712. |
Aashir Arham plz answer my curious question.✍️ |
| Answer» Thik ho gaya...tough tha.......kyuki hamaara chem ka exam principal sir ne banaya tha.<br>What about Chem paper....<br>Kon sa question yaar..... | |
| 713. |
Le chatelier\'s principal |
| Answer» Le-Chatelier\'s Principle state that When a reaction at equilibrium is subjected to a change of temperature, pressure or concentration of one (or more) of the reacting substances, then the system adjusts to a new equilibrium stage as dictated by the change of variable. . | |
| 714. |
H3 PO4 is a triprotic acid, while H3PO3 is a dibasic acid. How explain it ......... Please |
| Answer» | |
| 715. |
Please tell the important topics in chemistry. Final exam |
| Answer» Equilibrium, thermodynamics, organic chemistry ,hydrocarbon,<br>Equilibrium, chemical bonding, atomic structure, whole organic chemistry, and inorganic depends on your teacher | |
| 716. |
What is f centre? |
| Answer» An F-center, is a type of crystallographic defect in which an anionic vacancy in a crystal is filled by one or more unpaired electrons | |
| 717. |
What is the I U P A C name of element 120 |
| Answer» Unbinilium<br>Iupac name of elements 120 is unnbinil<br>Un-bi-nilium | |
| 718. |
Why iodination of methane is carried in out presence of HIO3 |
| Answer» | |
| 719. |
Complete following reactions ,:NaH + BF3 - |
| Answer» that is BF3<br>It forms adduct | |
| 720. |
If you have done with your chemistry practical send me a few questions please |
| Answer» About practical Titration<br>They may ask questions related to the project you have made<br>Send | |
| 721. |
Explain relationship between cp and cv |
| Answer» Cp - cv = R<br>Cp-Cv = R | |
| 722. |
Variation of electonic confurgration |
| Answer» According to old concept it was 2,8,8,16, 32,32..... But according to new concept it is 1s2, 2s2 , 2p6 and it is a complete series known as afbau\'s principle by Afbau\'s principle.........☺ hope it may help u...<br>2,2,4,1 | |
| 723. |
limitations of bohr model |
| Answer» Limitations of Bohr Atomic Model Theory\tIt violates the Heisenberg Uncertainty Principle. The Bohr atomic model theory considers electrons to have both a known radius and orbit i.e. known position and momentum at the same time, which is impossible according to Heisenberg.\tThe Bohr atomic model theory made correct predictions for smaller sized atoms like hydrogen, but\xa0poor spectral predictions are obtained when larger atoms are considered.\tIt failed to explain the Zeeman effect when the spectral line is split into several components in the presence of a magnetic field.\tIt failed to explain the Stark effect when the spectral line gets split up into fine lines in the presence of an electric field. | |
| 724. |
Relationship between Kp and Kc |
| Answer» Kp=[Kc]RT^∆ng<br>Bhai simple hai | |
| 725. |
Acetylene convert into but -2-yne |
| Answer» | |
| 726. |
What is catalyst ?? |
| Answer» Catalyst is a. Substance which increase the rate of chemical reaction without itself undergoing any permanent chemical change. | |
| 727. |
How acetylene convert into but -2-yne |
| Answer» | |
| 728. |
Wenders waals equetion |
| Answer» [P+an²/v²][v-nb]=nrt | |
| 729. |
What is cathode rays? |
| Answer» Or negatively charged rays which attract to positive charge are cathode rays.<br>The rays which move from negatively charged cathod to positively charged anode are known as cathod rays. | |
| 730. |
Define daniel cell |
| Answer» | |
| 731. |
Why liquids diffuses slowly as compared to gases |
| Answer» Up to downeffect<br>In case of liquids, intermolecular space is less as compared to gases so the vanderwaal forces are higher and hence gases diffuses quickly. | |
| 732. |
What is the most important question in chemestry ?? |
| Answer» But i need help in chemestry specialy in equilibrium .....<br>Sis questions of kp,kc,ph and converting into benzene, aniline , phenol,acetophenon. And abnormal trends in p and s block and more<br>It is chemistry not Chemestey. All ncert questions are most important.???? | |
| 733. |
how to convert ethene to methanal by ozonolysis |
| Answer» Ozonolysis of ethene• Ethene on ozonolysis followed by the reaction with zinc dust and water, formaldehyde is formed.•Reduction of formaldehydeFormaldehyde on reduction by using lithium aluminum hydride followed by acid hydrolysis gives methanol | |
| 734. |
Important topics of thermodynamics |
| Answer» Entropy,Enthalpy<br>Hess\'s law, gibbs free energy | |
| 735. |
State huckel\'s rule |
| Answer» Huckel’s rule is a theory which helps to determine if a planar ring molecule is aromatic or not. According to this rule, if a planar ring (cyclic) molecule has 4n + 2π electrons, then it is aromatic | |
| 736. |
Why CO2 is soluble in aquoes NaOH than in water |
| Answer» Because it is non polar solution and water is polar. | |
| 737. |
Ethylbromide react with Na in presence of dry ether what will be the product |
| Answer» Butane + NaBr | |
| 738. |
Compare structure of H2O and H2O2 |
| Answer» In gaseous phase, water molecule(H2O) has a bent form with a bond angle of 104.5°. The O–H bond length is 95.7 pm. The structure of H2O can be shown as:\xa0Hydrogen peroxide has a non-planar structure both in gas and solid phase. The dihedral angle in gas and solid phase is 111.5° and 90.2° respectively. The structure\xa0of H2O2\xa0can be shown as: | |
| 739. |
De brodi wavelenth of 1mg grain of sand blow by a 20 m/s wind |
| Answer» | |
| 740. |
Picric acid is an acid but still bitter in taste.why? |
| Answer» Happy<br>It is a medicine so it contain some ingredients that are bitter in taste.....as we know that medicines are bitter in taste | |
| 741. |
Why dihydrogen gas is preffered in balloons |
| Answer» helium gas is preferred in balloons not dihydrogen gas<br>It is lighter than air<br>Because it ia loghter than air so it will help the baloon to fly easily | |
| 742. |
Why electron gain enthalpy of noble gases is almost zero. |
| Answer» due to fully filled orbitals noble gas are already stable and according to definition amount of energy released when elcectron is added to valence shell is called electron gain enthalpy .noble gases are neither losses nor gain electrons due to stability.<br>Anisha Sharma u r wrong<br>Aryan..... From where you found this question.... Because I have searched this question but not found any answer...... I think your question is wrong.... Plz let me know whether I\'m right or not..... Plz tell if your question is absolutely correct..... ?<br>Noble gas has large positive electron gain enthalpy. This is because the one electron is placed in the principal quantum energy levels .thus highly unstable electronic configuration is formed.. | |
| 743. |
What are ideal gas ?dreive its equation |
| Answer» Ideal gas is a gas which is non viscous at stp 1 mole = 22.7 litres.Derivation is not imp for school exam but if u want to see u can check page 141 ncert | |
| 744. |
Distinguish between ethene and enthyne chemically |
| Answer» The distinguish test between ethene and ethyne could be performed with Bromine. Ethene would react with Bromine and convert reddish brown bromine into colorless whereas Ethyne would not react with bromine . | |
| 745. |
What is laplace law? |
| Answer» Laplace corrected the law of speed of sound in air or gasses which was first given by Netwon .and after the laplace correction the speed of sound in air is 332 .3m per second. And he only putted gama in the formula , P/d = gama p/ d | |
| 746. |
Inpurity deffect |
| Answer» | |
| 747. |
Define critical temperature |
| Answer» The critical temperature is the temperature above which a gas cannot be liquefied ever after applying a large amount of pressure.<br>It may be defined as the temperature above which no gas can be liquified. | |
| 748. |
what are the important topics of p block elements and important questions too....??? |
| Answer» Inert pair effectProblem 11.5 in textbookOrtho boric acid Problem 11.4 in tbStructure of diboraneProblem 11.7 of tbExercise que.2,5,6,10,19,21-30.......that\'s it<br>Anisha Dharma imp for school exams1 inert pair effect2explain why atomic radius of ga is smaller than all3 silicates cement4 what is diagonal relationship<br>Boron borex silicon silicate<br>Silica,silicates,silicones ho sakte h<br>Please answer anybody????............ | |
| 749. |
What is VSEPR theory? Explain in detai. |
| Answer» And what will be the short definition for it?<br>VSEPR theory can be explained as follows:\tThe shape of any molecule can be explained by the repulsion between all the electron pairs that are present in the valence shell.\tThe repulsion between two lone pairs is greater than the repulsion between a lone pair and a bond pair. Presence of a lone pair on the central atom causes slight distortion of the bond angles from their ideal values.\tThe electronegativity difference between the central atom and the other atoms determines the magnitude of repulsion between the bonding pair of electrons.\tTriple bonds cause more repulsion than the double bonds. Similarly double bond causes more repulsion than a single bond. | |
| 750. |
What is the blue print of paper of class 11 physics and chemistry |
| Answer» u can see in this app only open that subjects which u have opptied and go to the cbse syllabus pattern there u will get divison of marks of each subjects clearly and its also correct | |