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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.
| 1651. |
How to find limiting reagent |
| Answer» Balance the chemical equation for the chemical reaction.Convert the given information into moles.Use stoichiometry for each individual reactant to find the mass of product produced.The reactant that produces a lesser amount of product is the limiting reagent.The reactant that produces a larger amount of product is the excess reagent.To find the amount of remaining excess reactant, subtract the mass of excess reagent consumed from the total mass of excess reagent given. | |
| 1652. |
What is catio and anion. |
| Answer» cation is +vely charge and anion is -vely charge<br>These are the ions with positive and negative charges repectively.<br>Anion is smaller than its parent atom<br>In cation ,parent atom is grater than children atom ex. Na-Na+ e-<br>+ve and -ve charge ions<br>+ve n -ve charge | |
| 1653. |
Answers for cannizaro reaction |
| Answer» | |
| 1654. |
cr[(oh)4]-1 +3h2o2=cro4-2 +h2o. balance the equation by oxidation number method |
| Answer» But I\'m finding the problem in solving it so i want the solution<br>First see the element whose oxidation state is changing and then exchange the oxidation numbers and simply balance the eqn | |
| 1655. |
What is dielectric contant. H2O dielectric is 82and HF is 84 but is not used in polar solvent. |
| Answer» | |
| 1656. |
What is value of enthalpies of all elements in there standard states. |
| Answer» | |
| 1657. |
what is physical equilibrium and give two example |
| Answer» change in state as ..solid.liquid.gas..gasH2+O2gas=H2Oliquid | |
| 1658. |
Superoxide ion is stable only in the present of large cation .why? |
| Answer» | |
| 1659. |
Explain why o- nitrophenol has a lower boiling point than p -nitrphenol |
| Answer» Thanks?<br>Perfect answer by isha<br>Hope this will help you??<br>Because in o- nitrophenol intramolecular H- bonding exist , whereas in p- nitrophenol intermolecular H- bonding exist.....and those compound in which intermolecular H- bonding exist generally have high melting and boiling point..... | |
| 1660. |
Pentahalides are more covalent than trihalides |
| Answer» | |
| 1661. |
Write the name of system found in vegetables and fruits ? |
| Answer» Thanks....?<br>Open system | |
| 1662. |
What is solvey process. |
| Answer» Someone plz give me an answer of this question... | |
| 1663. |
Why molality preferred over molarity |
| Answer» Molarity depends upon volume and we know that volume changes with temperature. So molarity differs with temperature wheras molality is not variable, hence molality is preferred over molarity<br>Because molalty have mole/weight(kg) .weight never change by temp. ,Humidity ,pressure etc but volume will be change. Volume in molarty<br>because their is no effect of temperature in molality. It does not change with temp. as molality is equal to no. Of moles of solute /mass of the solvent in kg. Where as molarity is change because molarity is depend upon volume of solution (molarity is equal to no. Of moles of solute /volume of solution in litre ).volume is change with temp. | |
| 1664. |
How do you prepare ethane during chlorination of methane |
| Answer» | |
| 1665. |
Which bond form in carbon2 molecule |
| Answer» 1 sigma and 1π bond<br>Sigma | |
| 1666. |
Calculate the volume occupied by 5.0 g of acetylene gas at 50:c and 740 mm pressure |
| Answer» | |
| 1667. |
No. Of electron plus neutron in 40k19+ |
| Answer» there are 18 electron and 21 neutrons which means electron + neutron will be 39. | |
| 1668. |
Why He is dimagnetic. |
| Answer» Hey?<br>Hey .....Aman....<br>ye sb Google keyboard ka kamaal hai<br>Really , tum kaise likhti ho yaar<br>how did u write such a long ans. Aaj tum Bata hi do?<br>\tDiamagnetic substances contain no unpaired electrons in their atoms\tHelium Symbol is He with atomic number -2. and its electronic configuration-1s²\tHere last orbital contains 2 electrons which is the maximum capacity that an orbital can hold.and both the electrons in s orbital are paired.\tSo, helium has no unpaired electrons and It is diamagnetic in nature. | |
| 1669. |
Anyone hes 2017-18 physics cbse school kv half yearly papers |
| Answer» Yes | |
| 1670. |
Different between eimission and absorption spectrum |
| Answer» \tEmission SpectraAllotropic SpectraEmission spectra get defined as the electromagnetic radiation that a source emits.Absorption Spectra gets defined as the electromagnetic radiation that a substance absorbs.The lines that occur during the emission spectra show some spark.The lines that occur during the absorption spectra shows some dip in the spectrum.Emission does not depend on matching ones and carries out at any level.Absorption requires some degree of wavelength for the process to carry itself out.Does not have many color changes because it only focuses on a path and few dark colors.Different colors are present as the frequencies will have their own lines.Visible at many levels of lines of frequencies.Only occurs at the frequencies that match at the same time.\t | |
| 1671. |
Difference b/w orbit and orbital |
| Answer» Orbit :\tAn orbit is a well defined circular path around the nucleus in which the electrons revolve.\tIt represents the planar motion of an electron around the nucleus.Orbital :\tAn orbital is the three dimension space around the nucleus within which the probability of finding an electron is maximum (upto 90%).\tIt represents the three dimensional motion of an electron around the nucleus. | |
| 1672. |
How would you say that aluminium ia matter |
| Answer» Aluminium is a substance which has mass and thus exert some weight. Also it occupies some space hence it can be called as matter.<br>Anything which occupies mass and has space.that\'s why aluminium is a matter<br>Occupies space and has mass | |
| 1673. |
what is scientific name of silkworm |
| Answer» Silk worm - Bombyx Mori<br>Bombyx mori.. | |
| 1674. |
Define saturation point,saturation pressure and saturation temperature? |
| Answer» | |
| 1675. |
How energy is radiated when ionisation occurs |
| Answer» Most of the affected Atoms are ionised directly by the secondary body beta paticles photons Are called indirectly ionizing radiation | |
| 1676. |
Solid state is added to class 11 or not |
| Answer» Of course it is added soo be prepared<br>Yes it added but it will be not come 12 syllabus<br>Yeah added<br>It is added...<br>Yes,Solid state is added | |
| 1677. |
What is the shape of Xef7 |
| Answer» Octahydral<br>antiprismatic or may be dodecahydral<br>sp3d4<br>Hello shreya sharma the shape of xef7 . your answer is pyramidal ? Explain me<br>Pyramadial shape<br>Give me answer<br>Sp3 it is exception | |
| 1678. |
What is meant by precise in measurement |
| Answer» | |
| 1679. |
Define MOT and VSEPR theory |
| Answer» VSEPR Theory: - (a.) There are three types of repulsion in a covalent molecule lp-lp > lp-bp > bp-bp.(b.) These replusion depend upon difference in electronegatively between combining atom.<br>MOT:- The overlap of atomic orbitals of same symmetry of two homonuclear atoms to give addition or subtraction of wave function and form bonding MO and antibonding MO respectively is known as MO theory..<br>Mot > when two atomic orbital combine with each other than they form molecular orbital theory VSPER theory > it represent or determine shape of compound and structure on basis of hybridisation | |
| 1680. |
Difference between wave and particle nature of matter.(3 points) |
| Answer» \tParticleWave1) A particle is a small quantity of matter under consideration.1) Wave is associated with to and from motion.2) Localized point in space2) Delocalized point in space3) Energy depends upon mass and velocity of the particle,\xa0E=mc23) Energy depends upon wavelength and velocity\xa0E=hv=(hc)/λ4) It does not show interference.4) Shows interference.5) Simultaneous existence of two or more particle.5) Simultaneous existence of two or more particle will be favoured.\t | |
| 1681. |
Limitation of bohr\'s atomic model |
| Answer» It cannot explain the spectrum of multielectron atom.Fails to explain Zeeman effect and Stark effect.Against dual nature of matter .Against uncertainty principle | |
| 1682. |
Metal excess defect? |
| Answer» | |
| 1683. |
I want to ask about the octet rule |
| Answer» It tells us that there are maximum of 8 electrons in outermost shell of an atom | |
| 1684. |
What is co ordinate bonding? |
| Answer» These are the bond which are made up by transferring of lone pair electron between donar and receptor<br>The bond in which both the electrons comes from one atom......is called coordinate covalent bond.... | |
| 1685. |
What is thermodynamics ??? |
| Answer» A thermodynamical system is said to be in thermal equilibrium when macroscopic variables (like pressure, volume, temperature, mass, composition etc) that characterise the system do not change with time.In Thermodynamics we consider only the state of the object which means we will only consider macroscopic variables like pressure, volume and temperature.<br>Tell me a sentence defination | |
| 1686. |
Ekectronic configration attach withnoble gasses |
| Answer» | |
| 1687. |
Why is tungsten metals selected for making the filaments of the bulbs |
| Answer» There are two reasons behind it\xa01.High melting point- it increases the life span of the bulb2.High resistivity- due to it enough energy produces & bulb able to emit light.\xa0<br>Because it have very high melting point about 3380 degree celceius. | |
| 1688. |
What is the name given to the element in which 4f orbital is progressively filled? |
| Answer» Innertransition elements<br>Lanthanides | |
| 1689. |
What would have happened to the gas if the molecular collisions were not elastic? |
| Answer» Pressure would be zero on the walls of the container | |
| 1690. |
What is the lowest value of n that allows g orbital to exist? |
| Answer» S-n=1P-n=2D-n=3F-n=4G-n=5<br>n=5 | |
| 1691. |
How to find angle btw any bonding?? |
| Answer» The bonding | |
| 1692. |
An atom having mass number 13 has 7 neutron what is the atomic number identify the element |
| Answer» Carbon<br>6 i.e. carbon<br>Carbon | |
| 1693. |
Calculate g for conversion oxygen to ozone 3/2g o3 at |
| Answer» www.myguidepdf.ooo | |
| 1694. |
Define define molarity and molality |
| Answer» MOLARITY-no. Of moles of solute prsent in per Liter of solution.denoted as M MOLALITY-no. Of moles of solute present in per kg of solvent.denoted as m | |
| 1695. |
Calculate the workdone when 56g of fe reacts with hcl acid in an open beaker at 27C |
| Answer» | |
| 1696. |
Define Absoulte zero in simple words. |
| Answer» Absolute zero is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as 0. May be not so sure? | |
| 1697. |
Chemistry me normality cbse ke syllabus me hai ya nahi .please answer its urgent |
| Answer» Ncert book me Nabi h to syllabus me bhi bhi hoga<br>Yes<br>In ncert, I think normality has not given so, it is not in syllabus<br>Yes hai normality | |
| 1698. |
What is sceintific notation?and signigicant figure. |
| Answer» Thanx<br>scientific notation : any number can be represented in the form of N×10^n where n is an exponent having positive or negative values and N can varybetween 1 to 10. SIGNIFICANT FIGURE:Significant figures are meaningful digits which are known with certainty. | |
| 1699. |
Hyy......write the electronic configuration of Zn.....(z=30) |
| Answer» 1s^2,2s^2 ,2p^6, 3s^2,3p^6,4s^2,3d^10 . Or u can write [Ar] 4s^2,3d^10 . | |
| 1700. |
Why cesium is the most electropositive element in periodoc table |
| Answer» As the last shell of the atom is really far from its nucleas,The attractive forces between them are almost none.Hence, it is really easy for caesium to lose that elctron making caesium the most electropostive element | |