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.
| 2001. |
The number of atoms present in 16 gm of 02 is |
| Answer» | |
| 2002. |
How to draw structure of hypophosphoric? |
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| 2003. |
Difference between orbit or orbital |
| Answer» <colgroup> <col /> <col />\t</colgroup>\tOrbitsOrbitalsOrbit is a well-defined circular path around the nucleus in which electrons revolve around the nucleus.3-dimensional space around the nucleus where is probability of finding an electron is maximum is called an orbital.\xa0It represents the motion of an electron in one plane.\xa0It represents motion of an electron in three-dimensional space.All the orbits are either circular or elliptical.\xa0Orbitals are of different shapes such as spherical, dumbbell and double dumbbell. In an orbit one, two or more than two electrons can be present. In an orbit number of electrons can be 2n2 where ‘n’ is number of orbit or principle quantum number.\xa0In one orbital maximum two electrons can be filled.\xa0Orbits are non-directional in nature.\xa0Orbitals are directional in nature except s-orbitals which are spherical in shape.\xa0Orbits represent that position and momentum of an electron can be measured simultaneously with certainty. Which is against Heinsberg’s principle.\xa0Orbitals concept completely complies with Heinsberg’s uncertainty principle.\xa0Atomic Structure showing Orbit\xa0Shapes of s, p, d and f-orbitals\t | |
| 2004. |
Ionisation enthalpy across period and groups |
| Answer» Increases in period but decreases in groups... | |
| 2005. |
Which is the hard unit acc. To you |
| Answer» Plant physiology is very simple for me<br>Plant physiology bio me h kya<br>Plant physiology is hard but when I do hardwork then everything is easy...✌ | |
| 2006. |
How does ISO electrons varying |
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| 2007. |
What are isoelectronic species? |
| Answer» Isoelectronics species are those species of elements and ions which have same number of electrons . | |
| 2008. |
explain predominance of intermolecular interactions and thermal energy |
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| 2009. |
Explain ideal gas law. |
| Answer» Thanks<br>Gases which obey the laws of gases thus act as a ideal gas.Eq:- PV=nRT | |
| 2010. |
Explain electron gain enthalpy |
| Answer» The amount of energy released when one electron is added to an isolated gaseous atom in its ground state.<br>In simple words, it is the energy released during gain of electron.( enthalphy or energy are same.) | |
| 2011. |
What is limiting reacent |
| Answer» Jaise sugar aur water ka example lekr explain krte hai water 1kg and sugar 8kg toh hmm 1kg water mai 4kg sugar mix krragey . Toh 4kg sugar baach jayege toh water limiting reagent hai .mtlb ki jo bhi thing hmmare pass extra mai hooge ... | |
| 2012. |
why in the building of the atom, the filling of 4s-orbital take place before 3d-orbital? |
| Answer» Yes, becoz according to afbau principle, electron first occupy the lowest energy orbital and then filled to higher energy orbital, only after the lower one filled......... For ex- 4s=4+0=4....... For ex- 3d= 3+2=5..... As 4s orbital is lower energy orbital hence, it will filled first............... HOPE IT HELPS?<br>Ssooo the movement is 1s then 2s then 2p 3s then 3p 4s then 3d 4p 5s ....<br>Make a table1s2s 2p3s 3p 3d4s 4p 4d 4f5s 5p 5d 5f6s 6p 6d 7s 7p | |
| 2013. |
How we can find the radius of atom?? |
| Answer» N^2a∆o | |
| 2014. |
Define wonder wall radius |
| Answer» One of the half distance b/w the nuclie of 2 identical non-bonded Isolated atoms or two adjacent identical atoms belonging to2 neighouring molecules in the solid state<br>half the closest distance of two equal, non-covalently bound, atoms is called Van der waal radius... in simple language | |
| 2015. |
Define octet rule? |
| Answer» Lover Boy, Are on BRAINLY app?<br>Yes, trisha shii hai<br>Sayaad octet ko mai aachey sai explain krr sakte hu aapni language mai<br>It states that atoms gain or lose the electrons in the outermost shell so as to attain the octet | |
| 2016. |
Pbcl2 is a bad conductor of electricity and pbcl4 is a good conductor how??? |
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| 2017. |
How to take out energy required to completly removed second outer most of Li2+ |
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| 2018. |
Prepration of bleaching powder &washing soda |
| Answer» Ca(OH) 2+ CL2=CAOCL2 | |
| 2019. |
What is ionization enthalpy explain |
| Answer» Energy required to remove outermost electron from atom<br>The energy required to convert a neutral atom into positive ions. | |
| 2020. |
difference between electron gain enthalpy and electronegativity? |
| Answer» Actually energy is released to achieve stability so if a atom is willing to take electron and every will be released and it\'s value will be in negative<br>Gain enthalpy is the property of a isolated neutral gaseous atom it is actually the energy release absorbed on addition of an electron to the above mentioned atom....it may be positive or negative it depends a atom is willing to accept electron or not if it is positive it means the atom is unwilling and if negative the atom is willing.... Chlorine has the highest electron gain enthalpy.............. Now electronegativity is the tendency of a bonded atom to withdraw electron pair of other atom in the molecule..... Fluorine is the most electronegative element also called as don of chemistry | |
| 2021. |
Name any substance which can float on water but get sink into oil |
| Answer» Isha u r wrong<br>Yah, sayad becoz Maine Kabhi try nhi kiya?<br>Am I right ??? Aman?<br>Also, Ice float on water and it will sink in oil<br>Yaa...<br>I think the oil it self. | |
| 2022. |
In states of matter solid state is included? |
| Answer» Yes | |
| 2023. |
Compound ke functional grp ko dekh kar iso yah sec use karenge yah aklyl branches dekh kar... |
| Answer» I think functional group | |
| 2024. |
Is the states of matter chapter is included in 11 class? |
| Answer» Of course..Unit no.4 (if m not wrong) | |
| 2025. |
What is vander waal radius? |
| Answer» Thank To All<br>Okay yash.....??<br>It is defined as the half of the internuclear distance between the adjacent atoms ( non- bonded ) belonging to different molecules of same compound....<br>The vander waals radius represent the overall size of the atom which includes its valence shell in a non bonded situation. | |
| 2026. |
Which metal is known as king of metal |
| Answer» Yaa right.... It is most expensive meta<br>Platinum | |
| 2027. |
Explain polarity? |
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| 2028. |
Which is more concentrate 1M or 1m |
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| 2029. |
Hlo frnds ☻ I\'m new here !! How are you all ? |
| Answer» Frm Bihar ryt ,,, badminton player ???? Are you on brainly ??<br>Nancy ?<br>no i know you<br>Ok<br>????<br>Hii | |
| 2030. |
What is 3 M in mole concept chepter |
| Answer» 3 is molarity of solution<br>3 M means 3 molar solution of a substance. | |
| 2031. |
What is (n-1)th shell or penultimate shell? |
| Answer» The shell which is before the valence shell is called penultimate shell. If n is valence shell then n-1 is the penultimate shell. | |
| 2032. |
Explain rydberg constant |
| Answer» 2.18× 10^18is rudberg constant of hydrogen.<br>RYDBERG CONSTANT, a constant , 1.097×10^m*, which appears in the formulae for the wave numbers of lines in the atomic spectra and is function of the rest mass and charge of the electrons, the speed of light, and planck\'s constant. { the symbol (^) means 7 and symbol (*) means -1}<br>109677 is known as rydberg constant<br>Its nothing to explain.....only its value is 109677 | |
| 2033. |
What is Balmer series??? |
| Answer» The series where ,N( initial) = 2and N ( final) = 3,4,5,6........upto infinity | |
| 2034. |
Explain me resonance structure |
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| 2035. |
What is difference between photon and proton |
| Answer» # Proton is a positively charged particle of an atom # Photon are the light packets .... | |
| 2036. |
Define relative velocity.obtain an expression for it |
| Answer» This is a velocity of an object related to some other object which may be stationary , moving slowly, moving with same velocity, moving with higher velocity or moving in opposite direction.. | |
| 2037. |
Difference between relative mass and relative density |
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| 2038. |
Why the speed of light is fastest in the universe? |
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| 2039. |
How bond energy varies from N2- to N2+ and why? |
| Answer» Pls answer | |
| 2040. |
Hiii guys chemistry ko pdne ka best method kya h |
| Answer» In case of chemistry...you should first solve all the ncert numericals and go through the theories and then you may get into other guide books....<br>Ok frnds thnx<br>Theory is so clear and simple , just focus on the numericals....<br>Main main topics and their numericals | |
| 2041. |
Hey guys !! Please tell me some best books to prepare NEET. Thanks !! |
| Answer» Okay<br>Mr.Thakur he is just asking about NEET so maths is not included..... OKAY....<br>Biology - NCERT at your fingertipsChemistry - organic in my pocketPhysics - H.C verma(For Chemistry and biology NCERT is enough) But for physics practice extra numerical<br>For neet there is only physics, chemistry and bio... not maths.... by the way for preparation for neet refer study material and for bio = ncert +pradeep,,, physics =5 year question paper +SL Arora +ncert,,, chemistry =5 year question paper +pradeep +ncert.<br>First I suggest All Types Of NCERT for PCMB. Second For Chemistry and Biology : - PRADEEP. For Physics: - HC VERMA. For Maths :- RS Aggarwal or RD Sharma.<br>Allen distance learning books, arihant or pradeep for chemistry and sl arora for physics | |
| 2042. |
Why are group 16 elements called chalcogens? |
| Answer» Thank you<br>group 16 elements are called Chalcogens coz they are very often found in the form of compounds or ores in the earths crust. | |
| 2043. |
what is1. isoelectric2. cation3. anion4. catalyst5. radius of an orbit |
| Answer» Radius of an orbit is the the distance between the nucleus of an element to its outermost shell<br>Catalyst: it is the substance which increases the speed of the reaction<br>Cation= it is an ion or element in the reaction having (+) charge Anion= it is an ion or element having (-) chargeFor example; NaCl: Na has positive charge and Cl has negative charge | |
| 2044. |
what are noble gases? |
| Answer» Noble gases are those which are stable and their valence is zero | |
| 2045. |
Chemical bond of H2so4 |
| Answer» H-- O--S--- O--H & two co- ordinate bond of O on S. | |
| 2046. |
Find out moles of Al2O3 formed from 20 moles of Al react with oxygen |
| Answer» It must be solved from POAC method | |
| 2047. |
Write different between molarity and morality. Why we preferred morality over molarity |
| Answer» We prefer molality over morality bcz mass is temperature independent while volume depends on temperatureMolality is the ratio of no. Of moles of solute to 1kg of solventMolarity is the ratio of no. Of moles of solute to 1 L of solution | |
| 2048. |
Why the name of lanthinide changes to lanthanoide? |
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| 2049. |
What is ionization enthalapy? |
| Answer» Energy required to remove an electron | |
| 2050. |
1.6×10^19÷1.758820×10^11 |
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