InterviewSolution
Saved Bookmarks
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.
| 1551. |
Arrange the bond order of increasing ionic character of the molecules -LiF K2O N2 So2 ClF3 |
| Answer» | |
| 1552. |
3 bromo phenyl cyanide |
| Answer» | |
| 1553. |
How to convert acetaldehyde to formic acid? |
| Answer» | |
| 1554. |
Iron carbon diagrams |
| Answer» | |
| 1555. |
Draw the picture and write their name for any 6 alicyclic compounds |
| Answer» | |
| 1556. |
Are you see the chemistry of all elements |
| Answer» | |
| 1557. |
Why Be is larger than B |
| Answer» Size of Be is larger than B bcoz B has more no. Of atoms in his shell as compared to Be ,Therefore,it has more charges in its nucleus and orbits which attracts each other due to which, size of B decreases . | |
| 1558. |
What is the shapes of orbitals according to ch 2 |
| Answer» Orbitals are differen5s in s,p,d orbital | |
| 1559. |
Important question of redox reaction |
| Answer» Balancing all the three types of equation. Oxidation no. Of all element is v.important<br>Electrochemical cell, electrode potential, oxidation states ( balancing ionic equation) and disproportion reaction | |
| 1560. |
क्वांटम सिद्धांत किसे कहते हैं और कितने प्रकार के होते हैं |
| Answer» | |
| 1561. |
Which are the important topics in the chapter 1 |
| Answer» limiting reagents, mole concept,percentage composition(emperical and molecular formula),stochiometric calculataions and reactions in solns..!!<br>formulae of molarity, molality, normality, mole fraction, and most imp. emperical formula.. | |
| 1562. |
solubility of srf2 is 10^-2 g/l at the room temperature calculate the solubility product of the salt |
| Answer» 1.99 *10^-12 explain answer | |
| 1563. |
Value of planks constant |
| Answer» 6.626 ×10^-34 Js<br>6.626 ×10^-31 Js<br>6.626 x 10^-27 J | |
| 1564. |
Explain me logarithm |
| Answer» | |
| 1565. |
MnO4- +ClO3- ----> MnO2 +Cl How it balanced |
| Answer» Mno4+ 2clo3=mno4+2cl+3o2 | |
| 1566. |
Important questistions of chp 1and 2 |
| Answer» | |
| 1567. |
important topics in chapter2 |
| Answer» tell main main topics<br>All | |
| 1568. |
Why KCl sometimes appear violet?? |
| Answer» The violet colour of KCl crystals is because of metal excess defect due to anionic vacancies.Excess of potassium makes KCl crystals violet or lilac. | |
| 1569. |
Bond line formula of benzene |
| Answer» Bond line formula is C6H6 | |
| 1570. |
How many isotope of oxygen after 3 |
| Answer» | |
| 1571. |
Why is a temperature below 0 K not possible? |
| Answer» ...Okkkkkkk dosto.......⭐⭐<br>Aur negative thing Mai nhi leta... ??? # jai bajrang bali???<br>Aree... Nhi... I Mean to say ager tumhara kuch acha doubt Hai toh.. Kya Pata Hume bhi kuch Sikhne ko milta....<br>sorry to say but I don\'t use brainly much.. I open it only for an hour.. rhi baat institute ki I don\'t go any institute.. right now I only concentrate on cbse..<br>............Samjh nhi paaoge bhai mei kya kehna chahta ho...... Samjh gaye tou bata....Ager koi 1 id ek use kare tou bahi baat ager ush cheez ko 2 log bhi use ker sakte hai ager bo chahe tou kehne ka matlab ye hai......<br>......Aaare yaar kehne ka matlab ye hai ager tum akash biomentors aur ya netprep ke student ho tou tum mujhe apne personal id share ker sakte ho... ....Joki yahan open ho javegi....Ish liye brainly per ye safely ho sakta hai.....Aur aman bhai tum tou negative way mei le gaye....... ?? Jai bajarang bali<br>Kio bhai,.. ? education toh education Hai.... U can rather ask here..... We will do our best to solve ur doubt.. ?? | |
| 1572. |
Demerits of mendlev periodic law |
| Answer» Demerits of Mendeleev Periodic Table. He was unable to locate hydrogen in the periodic table. Increase in atomic mass was not regular while moving from one element to another. Hence, the number of elements yet to be discovered was not predictable. | |
| 1573. |
What is free expansion |
| Answer» Free expansion means the expansion of a gas when the external pressure (pext) ) is zero. So the expansion of a gas in vacuum is free expansion as the external pressure is zero. The work done in the free expansion of a gas is always zero, wether the process is carried out reversibly or irreversibly. Secondly, the free expansion of the gas isothermal if no heat exchange is allowed between the system and the surrounding that is if the free expansion is carried out adiabatically, then it is isothermal. | |
| 1574. |
C2 exist or not |
| Answer» No<br>No | |
| 1575. |
How .pls give me the method to find out sigma and pi bond |
| Answer» tisra bhi pi hota h<br>AGR ek bond bs ho to sigmaDo hota hai to ek sigma aur ek piAur agar teen bond ho to pahlaSigma,dusra pi ,and tisra sigma bond hota hau. | |
| 1576. |
why do lakes freeze from top towards bottom?? |
| Answer» Wlc.... ? fishes ka example bus uhi de diya.... ??<br>Okk... fir v thanks. ? ?<br>He is just giving you the fact related to that.....?<br>thanks ?.. but ismay fishes Kha se aa gyi.. means it\'s not ask in the question.. ??<br>OK here ur answer :- we know that air above to the lake or water surface is much cooler than that of ground air... So cool air freezes the top of water surface.. Most Lake doesn\'t freezes right from the bottom except around the edge bcoz ground \'insulates\' the lake water.. That\'s why fish doesn\'t die even when water get cooled at bottom........... Hope it helps...... ??? | |
| 1577. |
Explain borax bead test with suitable example |
| Answer» | |
| 1578. |
Leais structure |
| Answer» Lewis structure is the structure which is formed by the completion of octet of the atom. | |
| 1579. |
Why hydrogen have only one electron and proton but not neutron |
| Answer» because the atomic number of hydrogen is 1 so the hydrogen has 1electron ,1proton and mass no. - atomic no. =neutron 1-1=0 neutron | |
| 1580. |
How plastic combine with salt in USA sea water ? |
| Answer» | |
| 1581. |
What is meant by enthalpy |
| Answer» heat at constant pressure<br>a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume.The expression for enthalpy H isH = U + PV | |
| 1582. |
Define bond length |
| Answer» In molecular geometry, bond length or bond distance is the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types, relatively independent of the rest of the molecule. | |
| 1583. |
Which Book is best to Read For the CBSE Board exams |
| Answer» | |
| 1584. |
How will you prepare highly pure hydrogen ? |
| Answer» Make Hydrogen Gas - Method 1. One of the easiest ways to obtain hydrogen is to get it from water, H2O. This method employs electrolysis, which breaks water into hydrogen and oxygen gas. Unbend the paperclips and connect one to each terminal of the battery. | |
| 1585. |
Calculate the molarity of 20% sulphuric acid density of sulphuric acid is 1.10g per cm3 |
| Answer» | |
| 1586. |
Discuss the derivation of real gases from the behavior of ideal gases |
| Answer» | |
| 1587. |
What is thermodynamics ? Mujhe bilkul samajh mai nhi aa raha hai |
| Answer» In the word thermodynamics the word"thermo" means heat and "dynamic" means change. | |
| 1588. |
Hdguvvghhg |
| Answer» This is not a question but this is a name of a scientist related to chemistry...??<br>Good question. ? | |
| 1589. |
Important topics in state of matter |
| Answer» Wlcm<br>Thanks<br>U need to just know the formula 1. V1÷t1=v2÷t22.p1×v1=p2×v23.p1÷t1=p2÷t24.pv=nrt5.d=pm/rt<br>Back exercise and solved questions of ncert is more than enough and graph reading is also necessary<br>I don\'t know how to do problems of that chapter<br>All ideal gas laws and Ideal equation derivation andNCERT back exercises are enough | |
| 1590. |
Define Electron Gain Enthalpy......?????? |
| Answer» Electron Gain Enthalpy is the energy released when one mole of electron are added to gaseous atoms of an element. Electron Affinity is the same as Electron Gain Enthalpy but viewed as the energy supplied to the surroundings rather than that released by the atoms. Hence its sign is opposite from the latter.<br>The amount of energy which is absorbed or released when an electron is added in isolated atom.(a)It is a measured in kilo joule per mole.(b)Its value does not change in regular order.<br>Electron Gain Enthalpy is the energy released when one mole of electron are added to gaseous atoms of an element. Electron Affinity is the same as Electron Gain Enthalpy but viewed as the energy supplied to the surroundings rather than that released by the atoms. | |
| 1591. |
Hairs of paint brush cling together when wet. |
| Answer» Surface tension could be defined as the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of the water molecules.<br>the hairs will cling together because they are wet, as we are in the habit of saying. ... So it is not exactly the wetness of the brush that makes the hairs cling together. Rather, it is a phenomenon called surface tension.<br>It is due to surface tension | |
| 1592. |
why do we regard the gaseous state of water as vapours while that of ammonia as gas?? |
| Answer» Only the gaseous states of those substances are regarded as vapours which are liquid at room temperature. Since water is a liquid, its gaseous state is called vapours. However, the gaseous state of ammonia is called gas because it is not a liquid at room temperature. | |
| 1593. |
Different between carban dioxide and ice ? |
| Answer» When exposed to room temperatures ice melts back into liquid water. Dry ice is the solid phase of the chemical CO2 (known as carbon dioxide). Dry ice is frozen carbon dioxide. ... #Dry ice is made of soildifing the carbondioxide (CO2) gas at very low temperature. | |
| 1594. |
O2- & F- which is larger in size |
| Answer» F should have larger size | |
| 1595. |
Atomic Mass Of Cobalt |
| Answer» 58.933195 u ± 0.000005 u mass or mass ≈59 and atomic number 27 and symbol - Co | |
| 1596. |
What is the relation between degree Celsius and degree Fahrenheit |
| Answer» F=9/5 degree C +32 | |
| 1597. |
What are polar molecules |
| Answer» A polar molecule has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from polar bonds arranged asymmetrically. Water (H2O) is an example of a polar molecule since it has a slight positive charge on one side and a slight negative charge on the other<br>Polar molecules are those molecules which contain parmanent dipole movement.or partial charge is developed. | |
| 1598. |
Which intermolecular interaction is responsible for high boiling point of water? |
| Answer» Hydrogen bonding ? | |
| 1599. |
State the law that deals with the pressure exerted by a mixture of non-reacting gases. |
| Answer» Torque is a movement of force. It is a product of applied force and the component of position vector perpendicular to the direction of force. Or u can say it as the product of magnitude of the applied force. Force is a product of mass and acceleration. Hope u get the difference<br>Priya ji aapse ek question puchna yeh hai ki torque and force mai difference kya hai ?<br>Daltons law states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases. This is related to ideal gas laws | |
| 1600. |
Why hf is more acidic as compared of nh4 |
| Answer» Becoz F us more electronegetive element then N as it breaks the bond and relase H+ very fastly in aqueous medium as compared to N | |