InterviewSolution
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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.
| 1701. |
Give anamolous behaviour of berillium |
| Answer» What do you mean by | |
| 1702. |
A s |
| Answer» What? | |
| 1703. |
I downloaded solutions as PDF but I don\'t know where it is saved , can u pls let me know |
| Answer» in ur phone there is my file option<br>On the top of the pdf there is an option already provided check it out or incase update your app | |
| 1704. |
In terms of Charles law, why is -273 K considered the lowest temperature? |
| Answer» At constant pressure, the given volume of any mass is increas or decrease by 1÷273 of its volume ar 0 degree celsius by the rise or fall of each degree of temperature<br>Because after this temperature when we get lower to this temperature no any body are able to perform their activity and the helium gas also get dissociate and we dosent able to perform any activity | |
| 1705. |
Significance of dipole moment |
| Answer» The important significance of dipole moment are as follows: Predicting the nature of the molecules- that is molecules with zero dipole moment are non polar while the molecule with specific dipole moment are polar in nature | |
| 1706. |
Guys kuch chem half yearly tak imp topic bta do |
| Answer» Practice ncert exercise and solved example and then important questions and sample papers from this app<br>Prove that entropy change for irreversible process is always greater than zero<br>Molecular orbital..Hybridisation..Molarity molality..Thermodynamics..definitions..are important<br>Hybridisation, molarity molality and difference between them and which is better to calculate the concentration<br>hybridisation | |
| 1707. |
What is mole concept and molar mass? |
| Answer» molar mass :- The mass of 1mole of a substance in gram is called molar mass mole concept ( in terms of no. ) : - 1mole = avogadro no.6.022×10 power 23 particles | |
| 1708. |
Being a parent i want to get prepared for the lessons of |
| Answer» U can make ur son or daughter to prepare questions of ncert and important questions and solved sample papers of cbse from this app | |
| 1709. |
calculate the packing of face centered cubic crystal lattice.. |
| Answer» | |
| 1710. |
Heya friends........ |
| Answer» Heya....Ritu thapliyal<br>Hlo<br>Heya ritu<br>Wassup ritu??<br>Hii | |
| 1711. |
Why O.N does not have fractional form??? |
| Answer» What O.N depict here???? | |
| 1712. |
How is hydroiodic acid??? |
| Answer» Thanks ritu?<br>Highly acidic aqueous solution of hydrogen iodide | |
| 1713. |
How fast an electron is moving if its wavelength is equal to the distance it travels in one second? |
| Answer» | |
| 1714. |
What is system? |
| Answer» Anything which is real in the universe is term as system. Anything means electro -chemical cells,an engine,a glass of water etc.<br>A system defined as that the thermodynamics applied as the heat energy on the system or goes out of the system<br>The part of the universe that is under thermodynamic observations is called the system. | |
| 1715. |
What is molerity? |
| Answer» hii frnd ur answer is here☺☺☺The no. of moles of solute dissolve in 1L of solution It is denoted by M.Unit is mol/ litre.<br>Molality of any solution is represent the number of moles of solute present in per kg of solvent.Molality(m) = number of moles of solute / mass of solvent in KgLet take mass of solvent is = 1 kg thenMolality is numerically equal to number of moles of soluteSo we can write the definition of molality that “ molality is the number of moles of solute present in 1 kg of solvent “ | |
| 1716. |
What is lewis acid |
| Answer» A Lewis acid is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct | |
| 1717. |
What are two metals which are invented due to spectrum |
| Answer» may be cesium and rubidium | |
| 1718. |
Why Nacl used to clear snow in road |
| Answer» Because ehen we add nacl to ice the freezing point of ice decreases which result in melting of ice<br>To melt snow | |
| 1719. |
Kitne number Ka theory |
| Answer» | |
| 1720. |
What is dipole moment and its SI unit |
| Answer» The product of charges of two atoms and distance between them is known as dipole moment Its CGS unit is "Debye" Its SI unit is C.m. ( Coumb meter ) | |
| 1721. |
What is the function of salt bridge |
| Answer» In the electrochemical cell a salt bridge performs the following functions:<div>a) It allows the flow of current by completing the circuit.</div><div>b) It maintains electrical neutrality.</div> | |
| 1722. |
Define electrode potential |
| Answer» When a metal is placed in a solution of its ions, the metal acquires either a positive or negative charge with respect to the solution. On account of this, a definite potential difference is developed between the metal and the solution. This potential difference is called electrode potential. | |
| 1723. |
Explain why cations are smaller and anions larger in radii than their parent atoms?? |
| Answer» Cations are always smaller than their parent atoms this is because they have lesser electrons, while their nuclear charge remains the same. The remaining electrons are, therefore held more tightly by the protons in the nucleus and thus their radii.are smaller than the parent atoms. This is opposite in case of anions. Anions are always larger than their parent atomsbecause the addition of 1 or more electrons would result in increased repulsion among the electrons and a decrease in the effective nuclear charge. | |
| 1724. |
What is the chemical formula of welding gas? |
| Answer» It is not a compound its a mixture containing hydrogen nd carbon only | |
| 1725. |
What is periodicity....????? |
| Answer» Sudden repeat in properties after regular intervals. | |
| 1726. |
What is limiting reagent and excess reagent......????? |
| Answer» The element which is present in limited(less)amount is known as limiting reagent whereas the element which is present in excess(more)amount is known as excess reagent.L.R.limits the amount of product whereas E.R. excess the amount of product so formed after reaction | |
| 1727. |
what is calgon |
| Answer» Calgon is a trade name of a complex salt, sodium hexametaphosphateNa2[Na4(PO3)6 ] is called calgon.Calgon is a brand registered trademark of water softener, and bath and beauty products.\xa0 | |
| 1728. |
explain the physical significance of van der waals equation. |
| Answer» thanks<br>It gives information about two postulates which have error in kinetic gas postulates and explain postulates rightly in vanderwalls eq. | |
| 1729. |
monobasic acid means????plzz explain |
| Answer» A monobasic acid is an\xa0acid that has only one hydrogen ion to donate to a base in an\xa0acid-base reaction. Hence, a\xa0monobasic\xa0molecule has only one replaceable hydrogen atom. Examples, HCl and HNO3.HCl\xa0→ H+ + Cl-HNO3\xa0→ H+\xa0+ NO3- | |
| 1730. |
How to find bond order? |
| Answer» Bonded molecular orbital - anti bonded molecular orbital upon 2<br>1/2( Nb -Na) | |
| 1731. |
Lother meyer law |
| Answer» He drawn curves on the basis of experimental facts and made curve between atomic volume and atomic mass . He found that the elements having same properties found same position in graph | |
| 1732. |
Cathode ray definition |
| Answer» A cathode ray is a ray of electrons in vacuum tube travelling from the negeatively charged electrode (cathode) at one end to the positively charged electrode (anode) at the other,across a voltage difference between the electrodes. Hope this will help. | |
| 1733. |
Explain stoichiometry |
| Answer» It is used to calculate , how much product, for this the equation must be balanced<br>calculations of reactants and products involved in a chemical equation is known as stoichiometry. | |
| 1734. |
How would you justify the presence of 18 elements in the 5th period of the periodic table |
| Answer» Yhh | |
| 1735. |
Describe the weaves used in your school shirt and jeans also mention their advantage |
| Answer» All the topic are important | |
| 1736. |
Calculate the ph value of the following resultant mixture: 10ml of 0.2M ca(oh)2+25ml of 0.1M HCL |
| Answer» | |
| 1737. |
Derive the Relation between kc and Kp |
| Answer» | |
| 1738. |
Write the resonance stricture for so3, NO3,NO3- |
| Answer» | |
| 1739. |
Describe easy language Dipole Induced Dipole Forces |
| Answer» | |
| 1740. |
Why deutrium is called a heavy hydrogen and why tritium is not a heavy hydrohen |
| Answer» Hydrogen has three isotopes which are protium, deuterium and tritium. Deuterium is therefore one of the isotopes of hydrogen. It has one proton and one neutron. The most common isotope of hydrogen is protium which has one proton and no neutrons. Because deuterium contains a neutron, it is heavier than protium, so it is sometimes called as heavy hydrogen.....i hope u liked the answer ....plzzzz give me a thumps up....... :)))) | |
| 1741. |
why electron energy taken as negative?? |
| Answer» thanks<br>Because energy on nucleus (proton) is +ve, to make atom neutral the e- energy taken as negative | |
| 1742. |
Who invented elements |
| Answer» It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. 1.6 million years later, gravity began to form stars and galaxies from clouds of gas.Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernova.<br>I think different elements were discovered by different scientist. ? | |
| 1743. |
Define.1.wavelenth 2.orbitals 3.atomic mass Quantum number. |
| Answer» Wavelength is the distance between two consecutive trough and crest Orbital is the place where electron could be found Atomic mass is the no of protons and neutrons in an atom Quantum no. Is the adress of an electron defined by n l m s<br>the wavelength is the spatial period of a periodic wave—the distance over which the wave\'s shape repeats.[1][2] It is thus the inverse of the spatial frequency. ,Atomic orbitals describe where an electron is likely to be found in an atom. Molecular orbitals perform the same role in molecules.Every atomic orbital is associated with three quantum numbers, n, l, and ml | |
| 1744. |
Why do gases deviates from the ideal behaviour? |
| Answer» | |
| 1745. |
Define Dalton\'s law of partical pressure |
| Answer» Dalton\'s 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<br>Hi<br>It state that the whole pressure exerted by non reacted gases is the sum of total individual pressure. | |
| 1746. |
What is dark energy |
| Answer» | |
| 1747. |
Explain mullikens theory and charles law and boyles law |
| Answer» | |
| 1748. |
The ratio of de broglie wavelenth of a proton and alpha particles wil be 1:2 if their |
| Answer» 8:1 | |
| 1749. |
What is lettice enthalpy? |
| Answer» The energy required to separate 1 mole of solid ionic compound into gaseous constituent ion. is known as lettice enthalpy. | |
| 1750. |
Why lithium halides are covalent in nature |
| Answer» Because they share electrons | |