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.
| 951. |
Easy definition of Dalton\'s law of partial pressure and its significance? |
| Answer» It is simply a postulate given by dalton in which when two non inert pair of gases interact the new compound formed acquire an net external pressure slightly more than its own pressures. So Dalton simpler this concern by introducing partial law of pressuresIn which the net pressure is equalize to the partial pressure of individual gases(only gas). P = p1+p2+p3+.........+ pnThis is significant for understanding thermodynamics later..... In brief order Hopefully this will help\'s you. ? | |
| 952. |
I want to know what is atomic spectra? |
| Answer» All atoms and molecules exhibit a characteristic spectra.. The spectra of atoms can be recorded in two ways.. 1. Absorption spectra and 2. Emission spectra......... Absorption spectra gives an idea of the electromagnetic radiations which are absorbed by the atom. These absorbed wavelength come as dark line in electromagnetic spectrum.. The spectrum of radiation emmited by the substance that as absorbed energy Is called emission spectrum | |
| 953. |
why is potassium lighter than sodium?? |
| Answer» | |
| 954. |
Define state function |
| Answer» These are the thermodynamic function which depend only on the state of the system and not on how it reached .eg.like Internal energy,Enthalpy are state function | |
| 955. |
What is reaction mechanism? |
| Answer» A series of steps which describes the whole rxn change briefly... | |
| 956. |
Nitric acid is an oxidising agent and reacts with PbO but it does not oxidise PbO2. Explain why |
| Answer» Both HNO3 and PbO2 are strong oxifing agent as in PbO2 lead os in its +4 oxiding state and want to become stable with +2 oxidation state | |
| 957. |
What process does take place at anode and cathode of daniell cell? |
| Answer» Oxidation at anode & reduction at cathode | |
| 958. |
Balance eqnK2Cr2 O7 + FeSO4 + H2SO4 >>K2SO4+ Fe2(SO4)3 + Cr2(SO4)3 + H2O |
| Answer» | |
| 959. |
Balance :Cr2o7-2 gives cr3+ |
| Answer» | |
| 960. |
MARKONIKOV RULE |
| Answer» It states that if an alkene is reacts with any compound like HBr then H will go to that c atom which is already rich in h atoms...<br>The negative part of the adding molecule gets attached to that carbon atom which posses lesser number of hydrogen atoms during addition of unsymmetrical alkene | |
| 961. |
What is triplet carbene |
| Answer» | |
| 962. |
Ostwalds proces |
| Answer» | |
| 963. |
Is mole concept not in syllabus? |
| Answer» Yes it is there | |
| 964. |
How carbon monoxide acts as a poison for human? |
| Answer» Carbon monoxide act as a poison for human bcoz of its ability to form complex with haemoglobin,which is about 300 times more stable than the oxygen-haemoglobin complex.This prevents haemoglobin in the red blood corpuscles from carrying oxygen round the body and ultimately resulting in death. | |
| 965. |
Why lithium is harder than others alkali metals? |
| Answer» Density increases as we go down the group and hardness decreases. Lithium is the lightest alkali metal and is harder than other alkali metals. As the number of shells increase, the attraction between the nucleus and the valence electrons decreases leading to a soft-weak structure that can be even cut by a knife. | |
| 966. |
How we determine geometry of molecule using hybridization |
| Answer» Geometry can be determined along with shapes in Books.. where shape is determined by Lone pair .. | |
| 967. |
How to write lab note book |
| Answer» You need to write aim,procedure,observation table all from ur lab manual | |
| 968. |
Why molecular orbitals are polycentric and atomic orbitals are monocentric?¿? |
| Answer» An atomic orbital is under the influence of one nucleus while a molecular orbital is influenced by two or more nuclei depending upon the number of atoms in the molecule. | |
| 969. |
Important questions from hydrocarbons |
| Answer» Wurtz reaction, pyrolysis, kolbe\'s electrolysis,acylation, alkylation, bromine water test, lindlar\'s reagent reaction, aeromatization reaction and NCERT question practice.?<br>And the most important thing is that after finishing the chapter donot forget to have a look on NCERT questions. You can also go through the ncert important questions and exemplar questions given in this app. I think it may help u......... ??<br>Donot learn any reaction, just know its mechanism that how its product been formed and if u have to score good marks just divide it four parts. Like alkanes,alkenes, alkynes, benzene. Then read one topic one day and try to memorize it. And within four days you will be finish hydrocarbons.<br>All the naming reactions...like wurtz reaction, friedel craft reactions and many more..... | |
| 970. |
What is dissociation enthalpy |
| Answer» The bond-dissociation energy is one measure of the strength of a chemical bond A–B. It can be defined as the standard enthalpy change when A–B is cleaved by homolysis to give fragments A and B, which are usually radical species. | |
| 971. |
What is degree of ionisation ? |
| Answer» proportion of neutral particles, such as those in a gas or aqueous solution, that are ionized to charged particles.... | |
| 972. |
Which element in periodic table say with respect |
| Answer» | |
| 973. |
H3Bo3 is not protic acid |
| Answer» No | |
| 974. |
Silicon shows higher covalency than carbon why |
| Answer» This is bcoz of absence of d- orbitals in the valence shell of carbon and presence of 3d-orbital in valence shell of silicon.Since silicon has vacant 3d orbital,it can accept electrons from electron donating species<br>Because catenation occurs most readilyin carbon which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the vast number of organic compound in nature | |
| 975. |
Important topic organic chemistry&chapter class11 |
| Answer» Organic inorganic each and every topic are important<br>Halokenes and stichiometry very very important topic in organic chemistry appearing some question from this topic in aiims entrance practice at least 10-15 times<br>Q | |
| 976. |
Huckle rule |
| Answer» All aromatic compounds must have (4n+2) electron where n=0,1,2,3,.......&posseses usual stability due to the complete delocalisation of π electron. | |
| 977. |
Markovnikov\'s rule |
| Answer» Negative part of adding molecule attach with that carbon atom which has less number of hydrogen | |
| 978. |
Resonating structure of benzene |
| Answer» Kekule | |
| 979. |
State and illustrate daltons law of partial pressure. |
| Answer» It states that the total pressure exerted by the mixture of non reactive gases is equal to the sum of the partial pressure of individual gases.p(total)= P1+P2+P3+ - - - - - (at constant temperature and volume).<br>Ans | |
| 980. |
State as to why a solution of Na2CO3 is alkaline??? |
| Answer» because on reacted with water it gives a strong base.Na2CO3+H2O---> NaOH+H2O+CO2 | |
| 981. |
The angular momentum of an electron in 4f orbital |
| Answer» | |
| 982. |
What happens when the mixture of sodium acetate and potassium propunate is electrolysed |
| Answer» | |
| 983. |
Show the orbital overlap picture of acetylene |
| Answer» | |
| 984. |
Second law of thermodynamics batana koi |
| Answer» | |
| 985. |
What do u mean by isomerism |
| Answer» Isomerism is a phenomenon in which two or more compounds have the same chemical formula but possess different properties because of different structural or spatial arrangements. Compounds which exhibit isomerism are called isomers. There are two types of isomerism:\tStructural isomerism\tStereoisomerism | |
| 986. |
Alkynes prepaeration |
| Answer» By wurtz reaction | |
| 987. |
2,8 dimethyl-3, 6- decadien convert into structure... |
| Answer» | |
| 988. |
carbon shows catenation.why |
| Answer» carbon has highest degree of catenation because:\xa01. high C-C bond energy\xa02. tetravalency (large number of bonds)\xa03. small atomic size hence less diffused orbital\xa0 | |
| 989. |
How to find the oxidation state of C in CO2 |
| Answer» let the oxidation state of carbon be (x) and take oxidation no. of O be (-2) x+ 2*(-2)=0x-4=0x=4hence oxidation no of carbon is +4 | |
| 990. |
What is Sodalime |
| Answer» It is mixture of sodium hydroxide and calcium oxide | |
| 991. |
Uses of calcium sulphate |
| Answer» | |
| 992. |
Define state functions |
| Answer» Which is not depend on path<br>A quantity that is given unique value for each given state of system. Eg entropy, enthalpy | |
| 993. |
What is hydration enthalpy? Please explain in a simple manner rather than writing definitions :) |
| Answer» Minimum energy required to add or remove one Water molecule is called hydration enthalpy<br>Thanks a lot<br>\tIncrease in atomic number increases the size of the element which in turn outweighs increasing nuclear charge. Therefore the outermost electron experiences strong screening effect from the nuclear charge.\tThe energy released as a result of the formation of new bonds between ions and water molecules is called hydration enthalpy.\tIn alkali metals the hydration enthalpies decreases with the increase in ionic sizes.\tLi+> Na+ > K+ > Rb+ > Cs+\xa0 | |
| 994. |
How can i get ans of previous year question paper |
| Answer» | |
| 995. |
write IUPAC name of *(CH3)3 CH ; *(CH3)3COH |
| Answer» IUPAC name of (CH3)3COH is 2-methylpropan-2-ol.and IUPAC name of (CH3)3CH is 2-methylpropane .Although it\'s more commonly called isobutane, despite this not being the "proper" IUPAC designation. | |
| 996. |
Arrange the elements N, P, O and S in order of increasing first ionization enthalpy. |
| Answer» S < P < O < N | |
| 997. |
At what temprature both calcius and farheneit will be equal? |
| Answer» At -40<br>At -40 degree both celcius and Fahrenheit are same.<br>-40<br>-40 | |
| 998. |
I needed chapter summary |
| Answer» Throw youtube | |
| 999. |
Give the value of n and L of 11th electron of potassium according to quantum no. Concept.. |
| Answer» But it is in p orbital then for p it should be 1.. I m confused because of this<br>n = 3 & l= 0 | |
| 1000. |
Is solid state and p block from 12th std portion shifted to 11th....?? |
| Answer» yes<br>yes<br>P block nitrogen family only<br>Yes | |