InterviewSolution
Saved Bookmarks
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.
| 4851. |
What is dispersion force |
| Answer» | |
| 4852. |
What is the significance of psi square and where it is zero |
| Answer» | |
| 4853. |
Define ionisation enthalpy. |
| Answer» Ionization Enthalpy of elements is the amount of energy that an isolated gaseous atom requires to lose an electron in its ground state. Losing of electrons results in the formation of cations. | |
| 4854. |
State dipole molecules.Gives it\'s examples |
| Answer» Dipole molecules are the molecules with dipole or which has an electronegative atomEx .hcl | |
| 4855. |
State Atomic radii. |
| Answer» It is distance from the center of the nucleus to outermost shell | |
| 4856. |
Define 1st law of thermodynamics |
| Answer» According to first law of thermodynamics, energy can neither be created nor destroyed.<br>Energy can neither be created nor be destroyed<br>First Law of Thermodynamics\tThe First law of thermodynamics is same as law of conservation of energy.\tAccording to law of energy conservation: - Energy can neither be created nor be destroyed, only transformed to other forms.\tAccording to first law of thermodynamics:- The change in the internal energy of a closed system is equal to the amount of heat supplied to the system, minus the amount of work done by the system on its surroundings.\tExamples:-\xa0Consider a ball falling from the roof of the building when at top of the building the ball has only potential energy and when it starts falling potential energy decreases and kinetic energy starts increasing. At the ground it has only kinetic energy. | |
| 4857. |
Write buffer action of NH4Cl +HCl???? |
| Answer» | |
| 4858. |
How blood is a buffer solution??? |
| Answer» \t\tThe pH of intracellular fluid, blood is naturally maintained. This maintenance of pH is essential to sustain life because, enzyme catalysis is pH sensitive process. The normal pH of blood plasma is 7.4.\t\t\tFollowing two buffers in the blood help to maintain pH (7.4).\t (a) Buffer of carbonic acid (H2CO3\xa0and NaHCO3) (b) Buffer of phosphoric acid (H2P04, HPO2-) | |
| 4859. |
Define System of Thermodynamics. |
| Answer» My pleasure !<br>Thanks<br>The certain quantity of matter or the space which is under thermodynamic study or analysis is called thermodynamic system.There are three types of thermodynamic systems :Open system : System in which there is transfer of mass as well as energy.2. Closed system: System in which there is transfer of energy only.3. Isolated system: System in which there is no exchange of energy as well as matter.Hope this is helpful . | |
| 4860. |
Draw the structure of B2H6 and state which type of this bond is .................... |
| Answer» No. Your Anwer is wrong.<br>Back bonding or bridge bonding | |
| 4861. |
Dipole moment of HCL is 0.82 D . If bond length is 1A° , then calculate the % ionic character? |
| Answer» | |
| 4862. |
Plz explain sigma & π (pi)bond |
| Answer» Sigma is the single bondπ is the double and third bond | |
| 4863. |
Explain metallic character? |
| Answer» As atomic size inc. , the metallic char.increasesFor ex. Caesium is most metallic element in the perodic table. | |
| 4864. |
So2 Dott structure |
| Answer» | |
| 4865. |
Which are imp topics in ch 1 to 8 |
| Answer» | |
| 4866. |
H+NTP what will be the volume of molecule of 6.022× 10 power 23 H2 |
| Answer» | |
| 4867. |
What is the value of electron gain enthalpy of na+ if IE 1 of Na=5.1eV? |
| Answer» | |
| 4868. |
Elements of IA group give flame colour due to? |
| Answer» The energy of the flame is sufficient to excite the electrons to higher energy level. ... Hence, the electrons emit energy and come back to the original levels. This emitted energy falls in the visible region of electromagnetic spectrum. This is why, alkali metals imparts colour to flame. | |
| 4869. |
What is the exact meaning of electron gain enthalpy |
| Answer» It\'s correct<br>The energy which is released by an atom in gaining an electron from outside atom or ion to form negative ion (or anion) is called electron gain enthalpy (∆egH) | |
| 4870. |
Difine bond order? |
| Answer» The half of the difference between the bonding orbital and anti bonding orbital is known as bond order | |
| 4871. |
How many groups in Mendeleev periodic table? |
| Answer» 18 group<br>Tq.. everyone<br>18<br>There are 18 groups and 7 periods in MPT.<br>There are 18 group in MPT<br>18<br>18 | |
| 4872. |
Why h2o is liquid and h2s is gas |
| Answer» Due to strong inter molecular hydrogen bond, molecular association takes place and water molecule in inter molecular spacing range of liquid and large size of sulphur does not provide H-bond . So it remains separated like gaseous molecule. | |
| 4873. |
why the second electron gain enthalpy of an atom is always positive? |
| Answer» When an electron is added to an isolated oxygen atom, it becomes uninegative ion. Now if one more electron has to be added, then it will experience a repulsive force or columbic force of repulsion. Hence more energy has to be supplied for the addition of an electron to this uninegative ion. Therefore , the second electron gain enthalpy is positive for oxygen. | |
| 4874. |
CN CN | | C - C - C | CNWhat is iupac name |
| Answer» | |
| 4875. |
Show lewis representation of NF3 |
| Answer» | |
| 4876. |
Why the graph of real gas deviates from ideal gas |
| Answer» Due to two assumptions of kinetic theory of gasesForce of attraction between the gas molecules is negligible Volume occupied by the gas molecules is negligible. | |
| 4877. |
Hybridisation shape bond pair abd lone pair of NO^2+ |
| Answer» | |
| 4878. |
How we can prove that electron is fundamental particle. |
| Answer» | |
| 4879. |
Hiw many electron are present in 1 kg of methane |
| Answer» The number of electrons present in 1 molecule of methane isCH4 = 1(6) + 4(1) = 10 electrons.1 molecule of methane has 10 electrons.1 mole of methane has 6.023X1023 molecules of methane.Number of electrons present in 1 molecule of methane = 10Number of electrons\xa0present in 6.023X10 23 molecules of methane =\xa06.023X1023 X 10 \xa0= 6.023X1024 electrons | |
| 4880. |
Calculate the no. Of moles in 25g of calcium carbonate. Full explaination |
| Answer» Mass of caco3 is ?No. Of mol.= 25/? =1/5 | |
| 4881. |
Why tertiary carbocation is more stable than primary carbocation |
| Answer» | |
| 4882. |
I want chemistry chapter 6 5marks questions |
| Answer» Themodynamics<br>Please name the chapter | |
| 4883. |
How we states law of mass action |
| Answer» | |
| 4884. |
What does mean aliphatic and alicyclic |
| Answer» Aliphatic CompoundsA major class of organic compounds that includes all those with carbon atoms linked in straight or branched open chains. Aliphatic compounds include\xa0alkanes,alkenes, or\xa0alkynes, or their derivatives.Example ----alkane, alkene, alkyne, alkadiene, haloalkanes, etc.Alicyclic CompoundsAn organic compound in which\xa0carbon\xa0atoms are linked to form one or more rings.\xa0Aromatic compounds\xa0are excluded because of their special properties. In general, alicyclic compounds resemble analogous\xa0aliphatic compounds.Example-------Cyclohexan\xa0(C6H12) is alicyclic, as are manyterpenes, such as\xa0menthol. | |
| 4885. |
Difference between molarity and molality |
| Answer» Molality=no. of moles of solute present in 1kg of solvent.............Molarity =no.of moles of solute present in 1 lt.of solution..............<br>No of moles per liter of solution called molarity while no of moles per kg of solvent called molarity<br>Molarity : The no of moles of solute present in 1 liter of solution. : SI unit is mol / liter.Molality : The no of moles of solute present in 1kg of solvent. : SI unit is mol / kg. | |
| 4886. |
Why are K and Cs rather than Li used in photoelectric cells |
| Answer» As we know, metals have high tendency to lose electrons.(lower the ionisation energy, higher is the tendency to lose electrons) that\'s why metals are used in photoelectric cells.Potassium and Caesium have much lower Ionisation enthalpy than that of Lithium . Therefore ,these metals on exposure to light emits electrons easily but lithium doesn\'t. As a result, K and Cs rather than Li are used in photoelectric cells. | |
| 4887. |
Name the elements that show simplest emissions spectrum |
| Answer» Hydrogen is the simplest atom having one electron only but more than emmision lines are more than spectrum. | |
| 4888. |
Name the different methods that can be used for separation of components of a mixture |
| Answer» | |
| 4889. |
What is the difference between enthalpy and entropy? |
| Answer» \tEnthalpyEntropyEnthalpy is a kind of energyEntropy is a propertyIt is the sum of internal energy and flow energyIt is the measurement of randomness of moleculesIt is denoted by symbol HIt is denoted by symbol SIt was termed by a scientist named Heike Kamerlingh OnnesIt was termed by a scientist named Rudolf Clausius\t | |
| 4890. |
Effect of mustard gas |
| Answer» Mustard gas strips away the mucous membranes of the eyes, nose and respiratory tract, victims may also experience irritation of the eyes, temporary blindness, runny nose, cough, shortness of breath and sinus pain. The digestive tract is also affected, resulting in abdominal pain, diarrhea, fever and vomiting. | |
| 4891. |
20ml N/10HCl is mixed with 40mlN/10NaOH solution the normality of resultant solution will be |
| Answer» | |
| 4892. |
What is nodes |
| Answer» Where finding rhe probability of the electron is zero. OKK<br>Electrons are found within the lobes. The plane (or planes) that the orbitals do not fill are called nodes. These are regions in which there is a 0 probability density of finding electrons.The number of angular nodes = l = 1The number of radial nodes = (n - l - 1) = 3 - 1 - 1 = 1Total number of nodes = n - 1 = 3 - 1 = 2 | |
| 4893. |
Which of these will not be oxidised by ozone |
| Answer» Mn2O7 | |
| 4894. |
Which one of the following ions will cause hardness in water sample |
| Answer» HCO3- | |
| 4895. |
what is hybridisation explain with easy method |
| Answer» Mixing of s&p orbital is known as hybridisation<br>Intermixing of atomic orbitals with different energies gives new orbitals with equal energy and shape this process is known as hybridization.......<br>Hybrid + sation is hybridisation that easy and nice question | |
| 4896. |
BF3 does not have protons but still acts as an acid.why? |
| Answer» B has vaccant orbital and it accept electron so act as lewis acid<br>Acc to Lewis, a substance is an acid only when its octet is not complete.Also, in BF3 its octet is not complete.Thus, BF3 act as an acid even it is not having a proton. | |
| 4897. |
What is the exact definition of Dipole - Induced dipole forces? |
| Answer» When dipolar molecules come closer to non polar molecules then this type of force of attraction is observed<br>Definition Of Dipole Induced Dipole ForcesInduced dipole forces result when an ion or a dipole induces a dipole in an atom or a molecule with no dipole. These are weak forcesMore About Dipole Induced Dipole ForcesAn ion-induced dipole attraction is a weak attraction that results when the approach of an ion induces a dipole in an atom or in a nonpolar molecule by disturbing the arrangement of electrons in the nonpolar speciesA dipole-induced dipole attraction is a weak attraction that results when a polar molecule induces a dipole in an atom or in a nonpolar molecule by disturbing the arrangement of electrons in the nonpolar speciesThis type of attractive forces operate between the polar molecules having permanent dipole and the molecules lacking permanent dipolePermanent dipole of the polar molecule induces dipole on the electrically neutral molecule by deforming its electronic cloudThus an induced dipole is developed in the other molecule | |
| 4898. |
About formal charge |
| Answer» You can find formal charge by following steps1) valence electron -lone pair -electron-bond pair electron/2 | |
| 4899. |
Micheal Faraday discovered electron in which year |
| Answer» | |
| 4900. |
How to find log and antilog? Please help... |
| Answer» Bro . Visit YouTube channels for complete visualisation. Because article ki form me aap understand karne me ,kanhi na kanhi wrong ho sakti for. Don\'t take it as negative. I am just supporting u to feel the concept of log and antilog in a visualised way whhch can be attained by youtube, Unacademy,vedantu,gradeup.etc<br>For log and Antilog We use there Tables which\'ll be given in exam as required and you\'ve seen some tables of the same in Practical books or notebooks too.... log has some just 4 or 5 basic formulas and other thing depends on it\'s value......Well,you don\'t have to be worry about it as it is just used in science in 11th as probability in math, that is just few topics yeah!!! In 12th you\'ll understand it better as it is a part of math in 12th which isn\'t in 11th......That\'s all.... Hopes, You\'d liked the advice...... | |