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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.
| 851. |
What are core electrons |
| Answer» Electron which are not valency electrons and therefore do not participate in bonding. | |
| 852. |
Write short note on surface tension |
| Answer» Tension of surface film of liquid caused by attractive force between particles in surface layer of bulk of liquid to minimise surface area<br>force acting on the surface of a liquid | |
| 853. |
Allotropes |
| Answer» Are those whose physical properties are diffrent but chemical are same | |
| 854. |
Balance the equation in basic medium MnO4- + I- = Mn2+ + I2 |
| Answer» | |
| 855. |
Why solids are rigid? |
| Answer» In solids , there are very large force of attractions between atoms . Due to which they are very closely packed .Secondly , atoms in solid structure have least kinetic energy . Thus , the provided energy seems to be insufficient to break the solid structure . Therefore, solids known to be rigid . | |
| 856. |
State boyle\'s law |
| Answer» At constant temperature,Pressure is inversely proprational to volume | |
| 857. |
How to pass in chemistry before 10days of exam |
| Answer» Hi Chirag Whats up so you are worried about your chemistry paper which is 10 days after ok you haven\'t studied anything in the year round that is a bad thing but we should not focus on past you should live in present so I must see that you should manage proper time table now spending equal time for Organic inorganic and physical chemistry ok and spend much much time on organic chemistry as it is a difficult deal and you have to learn it very deeply the concepts are very deep and Inorganic Chemistry you can do on the last days because it requires only the learning of formulas and you can do all the questions round please do not forget to known as p s p block chapter as these are the chapters which are scoring and hydrogen too I forgot to tell you that so now stay focused remember remember that you have to do much much much much much question papers and sample papers because you haven\'t studied anything so they are going to tell you what kind of questions come in paper and my CBSE guide app is awesome for it. | |
| 858. |
What is stone cancer? |
| Answer» When there is a blockage in renial veins of nephron by the oils and fats that creats a. Passage problem gradually all the waste things make a big junk in the nephron and creates a tumor and gradually tumor that will damage the kidney so we call it as stone cancer | |
| 859. |
ab aisa ab ban twenty emil capacity contain a certain mass of a gas |
| Answer» | |
| 860. |
Is law of constant composition true for all types of compounds ? Why or why not |
| Answer» | |
| 861. |
What is molarity and |
| Answer» Molarity of a given solution is defined as the total number of moles of solute per litre of solution. The molality of a solution is dependent on the changes in physical properties of the system such as pressure and temperature as unlike mass, the volume of the system changes with the change in physical conditions of the system. Molarity is represented by M, which is termed as molar. One molar is the molarity of a solution where one gram of solute is dissolved in litre of solution. | |
| 862. |
What is scintillation? |
| Answer» Scintillation Counter is an instrument that is used for measuring ionizing radiation. “It comprises of the scintillator that generates photons in response to incident radiation”, a PMT tube is used to convert an electronics and electric signal to process the signal. | |
| 863. |
What is hunds rule |
| Answer» The electrons enter an empty orbital before pairing up. The electrons repel each other as they are negatively charged. The electrons do not share orbitals to reduce repulsion.When we consider the second rule, the spins of unpaired electrons in singly occupied orbitals is the same. The initial electrons spin in the sub level decides what the spin of the other electrons would be. For instance, a carbon atom’s electron configuration would be 1s22s22p2. The same orbital will be occupied by the two 2s electrons although different orbitals will be occupied by the two 2p electrons in reference to Hund’s rule.<br>The pairing of electrons in the orbitals of a particular subshell does not take place untill all the orbitals of the subshell are singly occupied..... | |
| 864. |
ZnO react with CO |
| Answer» Zn+CO3 | |
| 865. |
Q.1why H3PO3 is diprotic acidQ.2fridel craft alkylation |
| Answer» | |
| 866. |
Explain hyperconjugation effect. How does hyperconjugation effect explain the stability of alkene? |
| Answer» | |
| 867. |
Can we know important topics in chemistry from examination point of view |
| Answer» Equilibrium,organic and hydrocarbon<br>Mole concept,thermodynamics numerical, structure of an atoms principles and few questions of solved ncert,chemical bonding mot vsepr and many more. Periodic table,s block and p block, then equillibrium numericals. Nomenclatures from organic chemistry principle of separation impurities, in hydrocarbons preparation of alkenes,alkynes and many more | |
| 868. |
Why do real gas deviate from ideal gas |
| Answer» | |
| 869. |
Molar mass of the following 1- co2 ,2-CH4 |
| Answer» Co2- 12+16×2= 12+32 = 44g CH4- 12+1×4 = 12+4= 16g<br>Co2 = 44gCh4= 16g | |
| 870. |
3-etyl 4-methylhex4-en 2 pentane |
| Answer» | |
| 871. |
Balance Cl2O7+H2O2->ClO2- +O2 (by ion electron method...) |
| Answer» | |
| 872. |
The dipole movement of hydrogen haves decreases from HF to HI justify |
| Answer» | |
| 873. |
how does entropy change with increase in temperature?? |
| Answer» Addition of heat to a system increases the randomness in the system due to increase in molecular motions. Generally, a system at a higher temperature has greater randomness than at lower temperature. Thus, temperature too helps in the measurement of randomness of particles in a system. Heat added to a system at lower temperature causes greater randomness than in comparison to when heat is added to it at a higher temperature. Thus, entropy change is inversely proportional to the temperature of the system.<br>Q/T<br>Decreases.. change in entropy=enthalpy/temp. | |
| 874. |
Difference between stigma and pie bond |
| Answer» \tSigma BondPi BondDuring sigma bond formation overlapping orbitals can be either one hybrid and one pure orbital or two pure orbitals and two hybrid orbitals.During pi bond formation overlapping orbitals are always two unhybridized orbitals.Sigma bond exists independently and allows free rotation.Pi-bond always exists along with sigma bond and the rotation is restricted.Sigma bonds are stronger bonds.Pi bonds are usually less powerful compared to sigma bonds.Sigma bonds are formed first when atoms interact.Pi bonds are formed after the formation of sigma bonds.During the bonding between two atoms, Only one sigma bond is formed.Here two pi bonds can exist between two atoms.\t | |
| 875. |
Write the expression for the energy of an electron in hydrogen like structure |
| Answer» | |
| 876. |
Write the anamolous property of berilium |
| Answer» | |
| 877. |
Born haber cycle dor NaBr |
| Answer» | |
| 878. |
Please help in salt analysis |
| Answer» Ask me i ve got full knowledge in tht | |
| 879. |
Borax acid explain |
| Answer» | |
| 880. |
What is the difference between lone pair and electron pair..?? |
| Answer» Lone pair of electrons are electrons which do not take part in bonding while electron pair takes part in it. It forms bond i.e.,ane ,ene,yne | |
| 881. |
What is log of 13.6 |
| Answer» | |
| 882. |
Show the structure of tetra - tert - butylmethane |
| Answer» Gaurav pls tell how to upload photos on cbse guide.......?<br>Tetra-tert-butylmethane\xa0is a hypothetical\xa0organic compound\xa0with formula C17H36, or ((H3C)3C)4C. It would be an\xa0alkane, specifically the most compact branched\xa0isomer\xa0of\xa0heptadecane. The systematic name is 3,3-di-tert-butyl-2,2,4,4-tetramethylpentane. | |
| 883. |
Show the structure of (CH3)2 C (C2H5)2 |
| Answer» | |
| 884. |
Show the structure of (CH3)3 C CH2 C (CH3)3 |
| Answer» | |
| 885. |
एक ग्रुप मुझे एलिमेंट खोज लो बैलेंस टू एंड सीक |
| Answer» | |
| 886. |
the group having metal wide non metal liquid as well as gas at room temperature |
| Answer» | |
| 887. |
Explain the significance of venderwaals parameter |
| Answer» | |
| 888. |
Why carbondioxaid make milky bubble |
| Answer» | |
| 889. |
When passing carbondioxaid why make milky drops |
| Answer» | |
| 890. |
If we boil milk then bacteria die then where impurities precipitate |
| Answer» | |
| 891. |
How are 0.5 mol Na2CO3 and 0.5 M Na2CO3 different? |
| Answer» Molar mass of\xa0Na2CO3\xa0= (2×23)+12.00+(3×16)\xa0= 106\xa0g mol-1∴0.50 mol Na2CO3\xa0means 0.50×106g = 53g0.50 M Na2CO3\xa0means 0.50 mol of\xa0Na2CO3\xa0i.e. 53g of\xa0\xa0Na2CO3\xa0are present in 1litre of the solution. | |
| 892. |
What r the different regions of flame |
| Answer» | |
| 893. |
Electrometric effect examples |
| Answer» Transfer of electron on account of an attacking reagent is called electromeric effect | |
| 894. |
Write iupac names of the following compound s |
| Answer» | |
| 895. |
How many H bond in h2o2 |
| Answer» Two H bonds | |
| 896. |
Under what conditions ΔH becomes equal to ΔU |
| Answer» If ∆P=0 | |
| 897. |
What is the Mass of electron in gram |
| Answer» 9.1×10^-27 | |
| 898. |
Some basic asked questions in practical (viva) in chemistry . |
| Answer» 1) Why lead acetate is put in a group 2nd 2) confirmatory test of the compounds | |
| 899. |
Explain innerpair effect |
| Answer» The tendency of s–subshell decreases in chemical bonding on moving down the group called inert pair effect | |
| 900. |
State boyles law |
| Answer» P1V1 =P2V2<br>Boyle\'s law that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature. | |